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603 lines
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `HashSet` struct in crate `nom`."><meta name="keywords" content="rust, rustlang, rust-lang, HashSet"><title>nom::lib::std::collections::HashSet - Rust</title><link rel="stylesheet" type="text/css" href="../../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../../light.css" id="themeStyle"><script src="../../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../../nom/index.html'><div class='logo-container'><img src='../../../../rust-logo.png' alt='logo'></div></a><p class='location'>Struct HashSet</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.capacity">capacity</a><a href="#method.clear">clear</a><a href="#method.contains">contains</a><a href="#method.difference">difference</a><a href="#method.drain">drain</a><a href="#method.get">get</a><a href="#method.get_or_insert">get_or_insert</a><a href="#method.get_or_insert_owned">get_or_insert_owned</a><a href="#method.get_or_insert_with">get_or_insert_with</a><a href="#method.hasher">hasher</a><a href="#method.insert">insert</a><a href="#method.intersection">intersection</a><a href="#method.is_disjoint">is_disjoint</a><a href="#method.is_empty">is_empty</a><a href="#method.is_subset">is_subset</a><a href="#method.is_superset">is_superset</a><a href="#method.iter">iter</a><a href="#method.len">len</a><a href="#method.new">new</a><a href="#method.remove">remove</a><a href="#method.replace">replace</a><a href="#method.reserve">reserve</a><a href="#method.retain">retain</a><a href="#method.shrink_to">shrink_to</a><a href="#method.shrink_to_fit">shrink_to_fit</a><a href="#method.symmetric_difference">symmetric_difference</a><a href="#method.take">take</a><a href="#method.try_reserve">try_reserve</a><a href="#method.union">union</a><a href="#method.with_capacity">with_capacity</a><a href="#method.with_capacity_and_hasher">with_capacity_and_hasher</a><a href="#method.with_hasher">with_hasher</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-BitAnd%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E">BitAnd<&'_ HashSet<T, S>></a><a href="#impl-BitOr%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E">BitOr<&'_ HashSet<T, S>></a><a href="#impl-BitXor%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E">BitXor<&'_ HashSet<T, S>></a><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-Default">Default</a><a href="#impl-Eq">Eq</a><a href="#impl-Extend%3C%26%27a%20T%3E">Extend<&'a T></a><a href="#impl-Extend%3CT%3E">Extend<T></a><a href="#impl-FromIterator%3CT%3E">FromIterator<T></a><a href="#impl-IntoIterator">IntoIterator</a><a href="#impl-PartialEq%3CHashSet%3CT%2C%20S%3E%3E">PartialEq<HashSet<T, S>></a><a href="#impl-Sub%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E">Sub<&'_ HashSet<T, S>></a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-IntoIterator">IntoIterator</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><p class='location'><a href='../../../index.html'>nom</a>::<wbr><a href='../../index.html'>lib</a>::<wbr><a href='../index.html'>std</a>::<wbr><a href='index.html'>collections</a></p><script>window.sidebarCurrent = {name: 'HashSet', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../../../settings.html"><img src="../../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#109-111' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../../../index.html'>nom</a>::<wbr><a href='../../index.html'>lib</a>::<wbr><a href='../index.html'>std</a>::<wbr><a href='index.html'>collections</a>::<wbr><a class="struct" href=''>HashSet</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'>pub struct HashSet<T, S = <a class="struct" href="../../../../nom/lib/std/collections/hash_map/struct.RandomState.html" title="struct nom::lib::std::collections::hash_map::RandomState">RandomState</a>> { /* fields omitted */ }</pre></div><div class='docblock'><p>A hash set implemented as a <code>HashMap</code> where the value is <code>()</code>.</p>
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<p>As with the <a href="struct.HashMap.html"><code>HashMap</code></a> type, a <code>HashSet</code> requires that the elements
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implement the <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> and <a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> traits. This can frequently be achieved by
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using <code>#[derive(PartialEq, Eq, Hash)]</code>. If you implement these yourself,
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it is important that the following property holds:</p>
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<pre><code class="language-text">k1 == k2 -> hash(k1) == hash(k2)
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</code></pre>
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<p>In other words, if two keys are equal, their hashes must be equal.</p>
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<p>It is a logic error for an item to be modified in such a way that the
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item's hash, as determined by the <a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> trait, or its equality, as
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determined by the <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> trait, changes while it is in the set. This is
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normally only possible through <a href="../../std/cell/struct.Cell.html"><code>Cell</code></a>, <a href="../../std/cell/struct.RefCell.html"><code>RefCell</code></a>, global state, I/O, or
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unsafe code.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="comment">// Type inference lets us omit an explicit type signature (which</span>
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<span class="comment">// would be `HashSet<String>` in this example).</span>
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">books</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
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<span class="comment">// Add some books.</span>
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<span class="ident">books</span>.<span class="ident">insert</span>(<span class="string">"A Dance With Dragons"</span>.<span class="ident">to_string</span>());
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<span class="ident">books</span>.<span class="ident">insert</span>(<span class="string">"To Kill a Mockingbird"</span>.<span class="ident">to_string</span>());
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<span class="ident">books</span>.<span class="ident">insert</span>(<span class="string">"The Odyssey"</span>.<span class="ident">to_string</span>());
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<span class="ident">books</span>.<span class="ident">insert</span>(<span class="string">"The Great Gatsby"</span>.<span class="ident">to_string</span>());
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<span class="comment">// Check for a specific one.</span>
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<span class="kw">if</span> <span class="op">!</span><span class="ident">books</span>.<span class="ident">contains</span>(<span class="string">"The Winds of Winter"</span>) {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"We have {} books, but The Winds of Winter ain't one."</span>,
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<span class="ident">books</span>.<span class="ident">len</span>());
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}
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<span class="comment">// Remove a book.</span>
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<span class="ident">books</span>.<span class="ident">remove</span>(<span class="string">"The Odyssey"</span>);
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<span class="comment">// Iterate over everything.</span>
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<span class="kw">for</span> <span class="ident">book</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">books</span> {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">book</span>);
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}</pre></div>
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<p>The easiest way to use <code>HashSet</code> with a custom type is to derive
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<a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> and <a href="../../std/hash/trait.Hash.html"><code>Hash</code></a>. We must also derive <a href="../../std/cmp/trait.PartialEq.html"><code>PartialEq</code></a>, this will in the
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future be implied by <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a>.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Hash</span>, <span class="ident">Eq</span>, <span class="ident">PartialEq</span>, <span class="ident">Debug</span>)]</span>
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<span class="kw">struct</span> <span class="ident">Viking</span> {
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<span class="ident">name</span>: <span class="ident">String</span>,
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<span class="ident">power</span>: <span class="ident">usize</span>,
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}
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">vikings</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
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<span class="ident">vikings</span>.<span class="ident">insert</span>(<span class="ident">Viking</span> { <span class="ident">name</span>: <span class="string">"Einar"</span>.<span class="ident">to_string</span>(), <span class="ident">power</span>: <span class="number">9</span> });
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<span class="ident">vikings</span>.<span class="ident">insert</span>(<span class="ident">Viking</span> { <span class="ident">name</span>: <span class="string">"Einar"</span>.<span class="ident">to_string</span>(), <span class="ident">power</span>: <span class="number">9</span> });
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<span class="ident">vikings</span>.<span class="ident">insert</span>(<span class="ident">Viking</span> { <span class="ident">name</span>: <span class="string">"Olaf"</span>.<span class="ident">to_string</span>(), <span class="ident">power</span>: <span class="number">4</span> });
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<span class="ident">vikings</span>.<span class="ident">insert</span>(<span class="ident">Viking</span> { <span class="ident">name</span>: <span class="string">"Harald"</span>.<span class="ident">to_string</span>(), <span class="ident">power</span>: <span class="number">8</span> });
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<span class="comment">// Use derived implementation to print the vikings.</span>
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<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">vikings</span> {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">x</span>);
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}</pre></div>
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<p>A <code>HashSet</code> with fixed list of elements can be initialized from an array:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="ident">viking_names</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span><span class="op">></span> <span class="op">=</span>
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[ <span class="string">"Einar"</span>, <span class="string">"Olaf"</span>, <span class="string">"Harald"</span> ].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
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<span class="comment">// use the values stored in the set</span></pre></div>
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</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl<T> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, <a class="struct" href="../../../../nom/lib/std/collections/hash_map/struct.RandomState.html" title="struct nom::lib::std::collections::hash_map::RandomState">RandomState</a>></code><a href='#impl' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#113-148' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.new' class="method"><code id='new.v'>pub fn <a href='#method.new' class='fnname'>new</a>() -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, <a class="struct" href="../../../../nom/lib/std/collections/hash_map/struct.RandomState.html" title="struct nom::lib::std::collections::hash_map::RandomState">RandomState</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#127-129' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates an empty <code>HashSet</code>.</p>
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<p>The hash set is initially created with a capacity of 0, so it will not allocate until it
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is first inserted into.</p>
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<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();</pre></div>
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</div><h4 id='method.with_capacity' class="method"><code id='with_capacity.v'>pub fn <a href='#method.with_capacity' class='fnname'>with_capacity</a>(capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, <a class="struct" href="../../../../nom/lib/std/collections/hash_map/struct.RandomState.html" title="struct nom::lib::std::collections::hash_map::RandomState">RandomState</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#145-147' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates an empty <code>HashSet</code> with the specified capacity.</p>
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<p>The hash set will be able to hold at least <code>capacity</code> elements without
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reallocating. If <code>capacity</code> is 0, the hash set will not allocate.</p>
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<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
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<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">10</span>);</pre></div>
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</div></div><h3 id='impl-1' class='impl'><code class='in-band'>impl<T, S> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a href='#impl-1' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#150-337' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.capacity' class="method"><code id='capacity.v'>pub fn <a href='#method.capacity' class='fnname'>capacity</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#162-164' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of elements the set can hold without reallocating.</p>
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<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_capacity</span>(<span class="number">100</span>);
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<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">100</span>);</pre></div>
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</div><h4 id='method.iter' class="method"><code id='iter.v'>pub fn <a href='#method.iter' class='fnname'>iter</a>(&self) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Iter.html" title="struct nom::lib::std::collections::hash_set::Iter">Iter</a><T></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#184-186' title='goto source code'>[src]</a></h4><div class='docblock'><p>An iterator visiting all elements in arbitrary order.
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The iterator element type is <code>&'a T</code>.</p>
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<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
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<span class="ident">set</span>.<span class="ident">insert</span>(<span class="string">"a"</span>);
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<span class="ident">set</span>.<span class="ident">insert</span>(<span class="string">"b"</span>);
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<span class="comment">// Will print in an arbitrary order.</span>
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<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="ident">set</span>.<span class="ident">iter</span>() {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>);
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}</pre></div>
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</div><h4 id='method.len' class="method"><code id='len.v'>pub fn <a href='#method.len' class='fnname'>len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#202-204' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the number of elements in the set.</p>
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<h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">v</span>.<span class="ident">len</span>(), <span class="number">0</span>);
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<span class="ident">v</span>.<span class="ident">insert</span>(<span class="number">1</span>);
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">v</span>.<span class="ident">len</span>(), <span class="number">1</span>);</pre></div>
|
||
</div><h4 id='method.is_empty' class="method"><code id='is_empty.v'>pub fn <a href='#method.is_empty' class='fnname'>is_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#220-222' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if the set contains no elements.</p>
|
||
<h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">v</span>.<span class="ident">is_empty</span>());
|
||
<span class="ident">v</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">v</span>.<span class="ident">is_empty</span>());</pre></div>
|
||
</div><h4 id='method.drain' class="method"><code id='drain.v'>pub fn <a href='#method.drain' class='fnname'>drain</a>(&mut self) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Drain.html" title="struct nom::lib::std::collections::hash_set::Drain">Drain</a><T></code><span class='since' title='Stable since Rust version 1.6.0'>1.6.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#243-245' title='goto source code'>[src]</a></h4><div class='docblock'><p>Clears the set, returning all elements in an iterator.</p>
|
||
<h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">set</span>.<span class="ident">is_empty</span>());
|
||
|
||
<span class="comment">// print 1, 2, 3 in an arbitrary order</span>
|
||
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="ident">set</span>.<span class="ident">drain</span>() {
|
||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">i</span>);
|
||
}
|
||
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_empty</span>());</pre></div>
|
||
</div><h4 id='method.clear' class="method"><code id='clear.v'>pub fn <a href='#method.clear' class='fnname'>clear</a>(&mut self)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#261-263' title='goto source code'>[src]</a></h4><div class='docblock'><p>Clears the set, removing all values.</p>
|
||
<h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">v</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
<span class="ident">v</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="ident">v</span>.<span class="ident">clear</span>();
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">v</span>.<span class="ident">is_empty</span>());</pre></div>
|
||
</div><h4 id='method.with_hasher' class="method"><code id='with_hasher.v'>pub fn <a href='#method.with_hasher' class='fnname'>with_hasher</a>(hasher: S) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><span class='since' title='Stable since Rust version 1.7.0'>1.7.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#287-289' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a new empty hash set which will use the given hasher to hash
|
||
keys.</p>
|
||
<p>The hash set is also created with the default initial capacity.</p>
|
||
<p>Warning: <code>hasher</code> is normally randomly generated, and
|
||
is designed to allow <code>HashSet</code>s to be resistant to attacks that
|
||
cause many collisions and very poor performance. Setting it
|
||
manually using this function can expose a DoS attack vector.</p>
|
||
<h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">hash_map</span>::<span class="ident">RandomState</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">RandomState</span>::<span class="ident">new</span>();
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_hasher</span>(<span class="ident">s</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);</pre></div>
|
||
</div><h4 id='method.with_capacity_and_hasher' class="method"><code id='with_capacity_and_hasher.v'>pub fn <a href='#method.with_capacity_and_hasher' class='fnname'>with_capacity_and_hasher</a>(capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, hasher: S) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><span class='since' title='Stable since Rust version 1.7.0'>1.7.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#314-316' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates an empty <code>HashSet</code> with the specified capacity, using
|
||
<code>hasher</code> to hash the keys.</p>
|
||
<p>The hash set will be able to hold at least <code>capacity</code> elements without
|
||
reallocating. If <code>capacity</code> is 0, the hash set will not allocate.</p>
|
||
<p>Warning: <code>hasher</code> is normally randomly generated, and
|
||
is designed to allow <code>HashSet</code>s to be resistant to attacks that
|
||
cause many collisions and very poor performance. Setting it
|
||
manually using this function can expose a DoS attack vector.</p>
|
||
<h1 id="examples-10" class="section-header"><a href="#examples-10">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">hash_map</span>::<span class="ident">RandomState</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">RandomState</span>::<span class="ident">new</span>();
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_capacity_and_hasher</span>(<span class="number">10</span>, <span class="ident">s</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">1</span>);</pre></div>
|
||
</div><h4 id='method.hasher' class="method"><code id='hasher.v'>pub fn <a href='#method.hasher' class='fnname'>hasher</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>S</code><span class='since' title='Stable since Rust version 1.9.0'>1.9.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#334-336' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns a reference to the set's <a href="../../std/hash/trait.BuildHasher.html"><code>BuildHasher</code></a>.</p>
|
||
<h1 id="examples-11" class="section-header"><a href="#examples-11">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">hash_map</span>::<span class="ident">RandomState</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">hasher</span> <span class="op">=</span> <span class="ident">RandomState</span>::<span class="ident">new</span>();
|
||
<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_hasher</span>(<span class="ident">hasher</span>);
|
||
<span class="kw">let</span> <span class="ident">hasher</span>: <span class="kw-2">&</span><span class="ident">RandomState</span> <span class="op">=</span> <span class="ident">set</span>.<span class="ident">hasher</span>();</pre></div>
|
||
</div></div><h3 id='impl-2' class='impl'><code class='in-band'>impl<T, S> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a>, </span></code><a href='#impl-2' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#339-903' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.reserve' class="method"><code id='reserve.v'>pub fn <a href='#method.reserve' class='fnname'>reserve</a>(&mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#362-364' title='goto source code'>[src]</a></h4><div class='docblock'><p>Reserves capacity for at least <code>additional</code> more elements to be inserted
|
||
in the <code>HashSet</code>. The collection may reserve more space to avoid
|
||
frequent reallocations.</p>
|
||
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
|
||
<p>Panics if the new allocation size overflows <code>usize</code>.</p>
|
||
<h1 id="examples-12" class="section-header"><a href="#examples-12">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
<span class="ident">set</span>.<span class="ident">reserve</span>(<span class="number">10</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">10</span>);</pre></div>
|
||
</div><h4 id='method.try_reserve' class="method"><code id='try_reserve.v'>pub fn <a href='#method.try_reserve' class='fnname'>try_reserve</a>(&mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Result.html" title="enum nom::lib::std::prelude::v1::v1::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="enum" href="../../../../nom/lib/std/collections/enum.TryReserveError.html" title="enum nom::lib::std::collections::TryReserveError">TryReserveError</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#385-387' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>try_reserve</code>)</summary><p>new API</p>
|
||
</details></div></div><div class='docblock'><p>Tries to reserve capacity for at least <code>additional</code> more elements to be inserted
|
||
in the given <code>HashSet<K,V></code>. The collection may reserve more space to avoid
|
||
frequent reallocations.</p>
|
||
<h1 id="errors" class="section-header"><a href="#errors">Errors</a></h1>
|
||
<p>If the capacity overflows, or the allocator reports a failure, then an error
|
||
is returned.</p>
|
||
<h1 id="examples-13" class="section-header"><a href="#examples-13">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">try_reserve</span>)]</span>
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
<span class="ident">set</span>.<span class="ident">try_reserve</span>(<span class="number">10</span>).<span class="ident">expect</span>(<span class="string">"why is the test harness OOMing on 10 bytes?"</span>);</pre></div>
|
||
</div><h4 id='method.shrink_to_fit' class="method"><code id='shrink_to_fit.v'>pub fn <a href='#method.shrink_to_fit' class='fnname'>shrink_to_fit</a>(&mut self)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#407-409' title='goto source code'>[src]</a></h4><div class='docblock'><p>Shrinks the capacity of the set as much as possible. It will drop
|
||
down as much as possible while maintaining the internal rules
|
||
and possibly leaving some space in accordance with the resize policy.</p>
|
||
<h1 id="examples-14" class="section-header"><a href="#examples-14">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_capacity</span>(<span class="number">100</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">100</span>);
|
||
<span class="ident">set</span>.<span class="ident">shrink_to_fit</span>();
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">2</span>);</pre></div>
|
||
</div><h4 id='method.shrink_to' class="method"><code id='shrink_to.v'>pub fn <a href='#method.shrink_to' class='fnname'>shrink_to</a>(&mut self, min_capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#435-437' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>shrink_to</code>)</summary><p>new API</p>
|
||
</details></div></div><div class='docblock'><p>Shrinks the capacity of the set with a lower limit. It will drop
|
||
down no lower than the supplied limit while maintaining the internal rules
|
||
and possibly leaving some space in accordance with the resize policy.</p>
|
||
<p>Panics if the current capacity is smaller than the supplied
|
||
minimum capacity.</p>
|
||
<h1 id="examples-15" class="section-header"><a href="#examples-15">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">shrink_to</span>)]</span>
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">with_capacity</span>(<span class="number">100</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">100</span>);
|
||
<span class="ident">set</span>.<span class="ident">shrink_to</span>(<span class="number">10</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">10</span>);
|
||
<span class="ident">set</span>.<span class="ident">shrink_to</span>(<span class="number">0</span>);
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">capacity</span>() <span class="op">></span><span class="op">=</span> <span class="number">2</span>);</pre></div>
|
||
</div><h4 id='method.difference' class="method"><code id='difference.v'>pub fn <a href='#method.difference' class='fnname'>difference</a>(&'a self, other: &'a <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Difference.html" title="struct nom::lib::std::collections::hash_set::Difference">Difference</a><'a, T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#464-466' title='goto source code'>[src]</a></h4><div class='docblock'><p>Visits the values representing the difference,
|
||
i.e., the values that are in <code>self</code> but not in <code>other</code>.</p>
|
||
<h1 id="examples-16" class="section-header"><a href="#examples-16">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">4</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="comment">// Can be seen as `a - b`.</span>
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="ident">a</span>.<span class="ident">difference</span>(<span class="kw-2">&</span><span class="ident">b</span>) {
|
||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>); <span class="comment">// Print 1</span>
|
||
}
|
||
|
||
<span class="kw">let</span> <span class="ident">diff</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">difference</span>(<span class="kw-2">&</span><span class="ident">b</span>).<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">diff</span>, [<span class="number">1</span>].<span class="ident">iter</span>().<span class="ident">collect</span>());
|
||
|
||
<span class="comment">// Note that difference is not symmetric,</span>
|
||
<span class="comment">// and `b - a` means something else:</span>
|
||
<span class="kw">let</span> <span class="ident">diff</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">b</span>.<span class="ident">difference</span>(<span class="kw-2">&</span><span class="ident">a</span>).<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">diff</span>, [<span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">collect</span>());</pre></div>
|
||
</div><h4 id='method.symmetric_difference' class="method"><code id='symmetric_difference.v'>pub fn <a href='#method.symmetric_difference' class='fnname'>symmetric_difference</a>(<br> &'a self, <br> other: &'a <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S><br>) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.SymmetricDifference.html" title="struct nom::lib::std::collections::hash_set::SymmetricDifference">SymmetricDifference</a><'a, T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#491-496' title='goto source code'>[src]</a></h4><div class='docblock'><p>Visits the values representing the symmetric difference,
|
||
i.e., the values that are in <code>self</code> or in <code>other</code> but not in both.</p>
|
||
<h1 id="examples-17" class="section-header"><a href="#examples-17">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">4</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="comment">// Print 1, 4 in arbitrary order.</span>
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="ident">a</span>.<span class="ident">symmetric_difference</span>(<span class="kw-2">&</span><span class="ident">b</span>) {
|
||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>);
|
||
}
|
||
|
||
<span class="kw">let</span> <span class="ident">diff1</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">symmetric_difference</span>(<span class="kw-2">&</span><span class="ident">b</span>).<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">diff2</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">b</span>.<span class="ident">symmetric_difference</span>(<span class="kw-2">&</span><span class="ident">a</span>).<span class="ident">collect</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">diff1</span>, <span class="ident">diff2</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">diff1</span>, [<span class="number">1</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">collect</span>());</pre></div>
|
||
</div><h4 id='method.intersection' class="method"><code id='intersection.v'>pub fn <a href='#method.intersection' class='fnname'>intersection</a>(<br> &'a self, <br> other: &'a <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S><br>) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Intersection.html" title="struct nom::lib::std::collections::hash_set::Intersection">Intersection</a><'a, T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#518-524' title='goto source code'>[src]</a></h4><div class='docblock'><p>Visits the values representing the intersection,
|
||
i.e., the values that are both in <code>self</code> and <code>other</code>.</p>
|
||
<h1 id="examples-18" class="section-header"><a href="#examples-18">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">4</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="comment">// Print 2, 3 in arbitrary order.</span>
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="ident">a</span>.<span class="ident">intersection</span>(<span class="kw-2">&</span><span class="ident">b</span>) {
|
||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>);
|
||
}
|
||
|
||
<span class="kw">let</span> <span class="ident">intersection</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">intersection</span>(<span class="kw-2">&</span><span class="ident">b</span>).<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">intersection</span>, [<span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">collect</span>());</pre></div>
|
||
</div><h4 id='method.union' class="method"><code id='union.v'>pub fn <a href='#method.union' class='fnname'>union</a>(&'a self, other: &'a <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Union.html" title="struct nom::lib::std::collections::hash_set::Union">Union</a><'a, T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#546-552' title='goto source code'>[src]</a></h4><div class='docblock'><p>Visits the values representing the union,
|
||
i.e., all the values in <code>self</code> or <code>other</code>, without duplicates.</p>
|
||
<h1 id="examples-19" class="section-header"><a href="#examples-19">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">4</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="comment">// Print 1, 2, 3, 4 in arbitrary order.</span>
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="ident">a</span>.<span class="ident">union</span>(<span class="kw-2">&</span><span class="ident">b</span>) {
|
||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>);
|
||
}
|
||
|
||
<span class="kw">let</span> <span class="ident">union</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">union</span>(<span class="kw-2">&</span><span class="ident">b</span>).<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">union</span>, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">iter</span>().<span class="ident">collect</span>());</pre></div>
|
||
</div><h4 id='method.contains' class="method"><code id='contains.v'>pub fn <a href='#method.contains' class='fnname'>contains</a><Q>(&self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> <span class="where fmt-newline">where<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#574-580' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if the set contains a value.</p>
|
||
<p>The value may be any borrowed form of the set's value type, but
|
||
<a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> and <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> on the borrowed form <em>must</em> match those for
|
||
the value type.</p>
|
||
<h1 id="examples-20" class="section-header"><a href="#examples-20">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="number">1</span>), <span class="bool-val">true</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="number">4</span>), <span class="bool-val">false</span>);</pre></div>
|
||
</div><h4 id='method.get' class="method"><code id='get.v'>pub fn <a href='#method.get' class='fnname'>get</a><Q>(&self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Option.html" title="enum nom::lib::std::prelude::v1::v1::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T> <span class="where fmt-newline">where<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><span class='since' title='Stable since Rust version 1.9.0'>1.9.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#602-608' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns a reference to the value in the set, if any, that is equal to the given value.</p>
|
||
<p>The value may be any borrowed form of the set's value type, but
|
||
<a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> and <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> on the borrowed form <em>must</em> match those for
|
||
the value type.</p>
|
||
<h1 id="examples-21" class="section-header"><a href="#examples-21">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="number">2</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">2</span>));
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="number">4</span>), <span class="prelude-val">None</span>);</pre></div>
|
||
</div><h4 id='method.get_or_insert' class="method"><code id='get_or_insert.v'>pub fn <a href='#method.get_or_insert' class='fnname'>get_or_insert</a>(&mut self, value: T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#628-632' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>hash_set_entry</code>)</div></div><div class='docblock'><p>Inserts the given <code>value</code> into the set if it is not present, then
|
||
returns a reference to the value in the set.</p>
|
||
<h1 id="examples-22" class="section-header"><a href="#examples-22">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">hash_set_entry</span>)]</span>
|
||
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">3</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get_or_insert</span>(<span class="number">2</span>), <span class="kw-2">&</span><span class="number">2</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get_or_insert</span>(<span class="number">100</span>), <span class="kw-2">&</span><span class="number">100</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">4</span>); <span class="comment">// 100 was inserted</span></pre></div>
|
||
</div><h4 id='method.get_or_insert_owned' class="method"><code id='get_or_insert_owned.v'>pub fn <a href='#method.get_or_insert_owned' class='fnname'>get_or_insert_owned</a><Q>(&mut self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T <span class="where fmt-newline">where<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html" title="trait nom::lib::std::prelude::v1::v1::ToOwned">ToOwned</a><Owned = T> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#656-664' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>hash_set_entry</code>)</div></div><div class='docblock'><p>Inserts an owned copy of the given <code>value</code> into the set if it is not
|
||
present, then returns a reference to the value in the set.</p>
|
||
<h1 id="examples-23" class="section-header"><a href="#examples-23">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">hash_set_entry</span>)]</span>
|
||
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> [<span class="string">"cat"</span>, <span class="string">"dog"</span>, <span class="string">"horse"</span>]
|
||
.<span class="ident">iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">pet</span><span class="op">|</span> <span class="ident">pet</span>.<span class="ident">to_owned</span>()).<span class="ident">collect</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">3</span>);
|
||
<span class="kw">for</span> <span class="kw-2">&</span><span class="ident">pet</span> <span class="kw">in</span> <span class="kw-2">&</span>[<span class="string">"cat"</span>, <span class="string">"dog"</span>, <span class="string">"fish"</span>] {
|
||
<span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="ident">set</span>.<span class="ident">get_or_insert_owned</span>(<span class="ident">pet</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">value</span>, <span class="ident">pet</span>);
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">4</span>); <span class="comment">// a new "fish" was inserted</span></pre></div>
|
||
</div><h4 id='method.get_or_insert_with' class="method"><code id='get_or_insert_with.v'>pub fn <a href='#method.get_or_insert_with' class='fnname'>get_or_insert_with</a><Q, F>(&mut self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q, f: F) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T <span class="where fmt-newline">where<br> F: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.FnOnce.html" title="trait nom::lib::std::prelude::v1::v1::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> T,<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#688-697' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>hash_set_entry</code>)</div></div><div class='docblock'><p>Inserts a value computed from <code>f</code> into the set if the given <code>value</code> is
|
||
not present, then returns a reference to the value in the set.</p>
|
||
<h1 id="examples-24" class="section-header"><a href="#examples-24">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">hash_set_entry</span>)]</span>
|
||
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> [<span class="string">"cat"</span>, <span class="string">"dog"</span>, <span class="string">"horse"</span>]
|
||
.<span class="ident">iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">pet</span><span class="op">|</span> <span class="ident">pet</span>.<span class="ident">to_owned</span>()).<span class="ident">collect</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">3</span>);
|
||
<span class="kw">for</span> <span class="kw-2">&</span><span class="ident">pet</span> <span class="kw">in</span> <span class="kw-2">&</span>[<span class="string">"cat"</span>, <span class="string">"dog"</span>, <span class="string">"fish"</span>] {
|
||
<span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="ident">set</span>.<span class="ident">get_or_insert_with</span>(<span class="ident">pet</span>, <span class="ident">str</span>::<span class="ident">to_owned</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">value</span>, <span class="ident">pet</span>);
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">4</span>); <span class="comment">// a new "fish" was inserted</span></pre></div>
|
||
</div><h4 id='method.is_disjoint' class="method"><code id='is_disjoint.v'>pub fn <a href='#method.is_disjoint' class='fnname'>is_disjoint</a>(&self, other: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#717-723' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if <code>self</code> has no elements in common with <code>other</code>.
|
||
This is equivalent to checking for an empty intersection.</p>
|
||
<h1 id="examples-25" class="section-header"><a href="#examples-25">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">a</span>.<span class="ident">is_disjoint</span>(<span class="kw-2">&</span><span class="ident">b</span>), <span class="bool-val">true</span>);
|
||
<span class="ident">b</span>.<span class="ident">insert</span>(<span class="number">4</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">a</span>.<span class="ident">is_disjoint</span>(<span class="kw-2">&</span><span class="ident">b</span>), <span class="bool-val">true</span>);
|
||
<span class="ident">b</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">a</span>.<span class="ident">is_disjoint</span>(<span class="kw-2">&</span><span class="ident">b</span>), <span class="bool-val">false</span>);</pre></div>
|
||
</div><h4 id='method.is_subset' class="method"><code id='is_subset.v'>pub fn <a href='#method.is_subset' class='fnname'>is_subset</a>(&self, other: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#743-745' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if the set is a subset of another,
|
||
i.e., <code>other</code> contains at least all the values in <code>self</code>.</p>
|
||
<h1 id="examples-26" class="section-header"><a href="#examples-26">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">sup</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_subset</span>(<span class="kw-2">&</span><span class="ident">sup</span>), <span class="bool-val">true</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_subset</span>(<span class="kw-2">&</span><span class="ident">sup</span>), <span class="bool-val">true</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">4</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_subset</span>(<span class="kw-2">&</span><span class="ident">sup</span>), <span class="bool-val">false</span>);</pre></div>
|
||
</div><h4 id='method.is_superset' class="method"><code id='is_superset.v'>pub fn <a href='#method.is_superset' class='fnname'>is_superset</a>(&self, other: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#769-771' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns <code>true</code> if the set is a superset of another,
|
||
i.e., <code>self</code> contains at least all the values in <code>other</code>.</p>
|
||
<h1 id="examples-27" class="section-header"><a href="#examples-27">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">sub</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_superset</span>(<span class="kw-2">&</span><span class="ident">sub</span>), <span class="bool-val">false</span>);
|
||
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">0</span>);
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">1</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_superset</span>(<span class="kw-2">&</span><span class="ident">sub</span>), <span class="bool-val">false</span>);
|
||
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">is_superset</span>(<span class="kw-2">&</span><span class="ident">sub</span>), <span class="bool-val">true</span>);</pre></div>
|
||
</div><h4 id='method.insert' class="method"><code id='insert.v'>pub fn <a href='#method.insert' class='fnname'>insert</a>(&mut self, value: T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#792-794' title='goto source code'>[src]</a></h4><div class='docblock'><p>Adds a value to the set.</p>
|
||
<p>If the set did not have this value present, <code>true</code> is returned.</p>
|
||
<p>If the set did have this value present, <code>false</code> is returned.</p>
|
||
<h1 id="examples-28" class="section-header"><a href="#examples-28">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>), <span class="bool-val">true</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>), <span class="bool-val">false</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">1</span>);</pre></div>
|
||
</div><h4 id='method.replace' class="method"><code id='replace.v'>pub fn <a href='#method.replace' class='fnname'>replace</a>(&mut self, value: T) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Option.html" title="enum nom::lib::std::prelude::v1::v1::Option">Option</a><T></code><span class='since' title='Stable since Rust version 1.9.0'>1.9.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#813-821' title='goto source code'>[src]</a></h4><div class='docblock'><p>Adds a value to the set, replacing the existing value, if any, that is equal to the given
|
||
one. Returns the replaced value.</p>
|
||
<h1 id="examples-29" class="section-header"><a href="#examples-29">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="ident">Vec</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>::<span class="ident">new</span>());
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get</span>(<span class="kw-2">&</span>[][..]).<span class="ident">unwrap</span>().<span class="ident">capacity</span>(), <span class="number">0</span>);
|
||
<span class="ident">set</span>.<span class="ident">replace</span>(<span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>));
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">get</span>(<span class="kw-2">&</span>[][..]).<span class="ident">unwrap</span>().<span class="ident">capacity</span>(), <span class="number">10</span>);</pre></div>
|
||
</div><h4 id='method.remove' class="method"><code id='remove.v'>pub fn <a href='#method.remove' class='fnname'>remove</a><Q>(&mut self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> <span class="where fmt-newline">where<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#846-852' title='goto source code'>[src]</a></h4><div class='docblock'><p>Removes a value from the set. Returns whether the value was
|
||
present in the set.</p>
|
||
<p>The value may be any borrowed form of the set's value type, but
|
||
<a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> and <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> on the borrowed form <em>must</em> match those for
|
||
the value type.</p>
|
||
<h1 id="examples-30" class="section-header"><a href="#examples-30">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
|
||
|
||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="number">2</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">remove</span>(<span class="kw-2">&</span><span class="number">2</span>), <span class="bool-val">true</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">remove</span>(<span class="kw-2">&</span><span class="number">2</span>), <span class="bool-val">false</span>);</pre></div>
|
||
</div><h4 id='method.take' class="method"><code id='take.v'>pub fn <a href='#method.take' class='fnname'>take</a><Q>(&mut self, value: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Q) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Option.html" title="enum nom::lib::std::prelude::v1::v1::Option">Option</a><T> <span class="where fmt-newline">where<br> Q: <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><Q>, </span></code><span class='since' title='Stable since Rust version 1.9.0'>1.9.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#874-880' title='goto source code'>[src]</a></h4><div class='docblock'><p>Removes and returns the value in the set, if any, that is equal to the given one.</p>
|
||
<p>The value may be any borrowed form of the set's value type, but
|
||
<a href="../../std/hash/trait.Hash.html"><code>Hash</code></a> and <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> on the borrowed form <em>must</em> match those for
|
||
the value type.</p>
|
||
<h1 id="examples-31" class="section-header"><a href="#examples-31">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">take</span>(<span class="kw-2">&</span><span class="number">2</span>), <span class="prelude-val">Some</span>(<span class="number">2</span>));
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">take</span>(<span class="kw-2">&</span><span class="number">2</span>), <span class="prelude-val">None</span>);</pre></div>
|
||
</div><h4 id='method.retain' class="method"><code id='retain.v'>pub fn <a href='#method.retain' class='fnname'>retain</a><F>(&mut self, f: F) <span class="where fmt-newline">where<br> F: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.FnMut.html" title="trait nom::lib::std::prelude::v1::v1::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, </span></code><span class='since' title='Stable since Rust version 1.18.0'>1.18.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#897-902' title='goto source code'>[src]</a></h4><div class='docblock'><p>Retains only the elements specified by the predicate.</p>
|
||
<p>In other words, remove all elements <code>e</code> such that <code>f(&e)</code> returns <code>false</code>.</p>
|
||
<h1 id="examples-32" class="section-header"><a href="#examples-32">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">xs</span> <span class="op">=</span> [<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>,<span class="number">4</span>,<span class="number">5</span>,<span class="number">6</span>];
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> <span class="op">=</span> <span class="ident">xs</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>();
|
||
<span class="ident">set</span>.<span class="ident">retain</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">k</span><span class="op">|</span> <span class="ident">k</span> <span class="op">%</span> <span class="number">2</span> <span class="op">=</span><span class="op">=</span> <span class="number">0</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">set</span>.<span class="ident">len</span>(), <span class="number">3</span>);</pre></div>
|
||
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-BitAnd%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='impl'><code class='in-band'>impl<'_, '_, T, S> <a class="trait" href="../../../../nom/lib/std/ops/trait.BitAnd.html" title="trait nom::lib::std::ops::BitAnd">BitAnd</a><&'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>> for &'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-BitAnd%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1022-1052' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output-3' class="type"><code id='Output.t-3'>type <a href='../../../../nom/lib/std/ops/trait.BitAnd.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code></h4><div class='docblock'><p>The resulting type after applying the <code>&</code> operator.</p>
|
||
</div><h4 id='method.bitand' class="method"><code id='bitand.v'>fn <a href='../../../../nom/lib/std/ops/trait.BitAnd.html#tymethod.bitand' class='fnname'>bitand</a>(self, rhs: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1049-1051' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the intersection of <code>self</code> and <code>rhs</code> as a new <code>HashSet<T, S></code>.</p>
|
||
<h1 id="examples-36" class="section-header"><a href="#examples-36">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">a</span> <span class="op">&</span> <span class="kw-2">&</span><span class="ident">b</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>;
|
||
<span class="kw">let</span> <span class="ident">expected</span> <span class="op">=</span> [<span class="number">2</span>, <span class="number">3</span>];
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">set</span> {
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">expected</span>.<span class="ident">contains</span>(<span class="ident">x</span>));
|
||
<span class="ident">i</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i</span>, <span class="ident">expected</span>.<span class="ident">len</span>());</pre></div>
|
||
</div></div><h3 id='impl-BitOr%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='impl'><code class='in-band'>impl<'_, '_, T, S> <a class="trait" href="../../../../nom/lib/std/ops/trait.BitOr.html" title="trait nom::lib::std::ops::BitOr">BitOr</a><&'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>> for &'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-BitOr%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#989-1019' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output-2' class="type"><code id='Output.t-2'>type <a href='../../../../nom/lib/std/ops/trait.BitOr.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code></h4><div class='docblock'><p>The resulting type after applying the <code>|</code> operator.</p>
|
||
</div><h4 id='method.bitor' class="method"><code id='bitor.v'>fn <a href='../../../../nom/lib/std/ops/trait.BitOr.html#tymethod.bitor' class='fnname'>bitor</a>(self, rhs: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1016-1018' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the union of <code>self</code> and <code>rhs</code> as a new <code>HashSet<T, S></code>.</p>
|
||
<h1 id="examples-35" class="section-header"><a href="#examples-35">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">a</span> <span class="op">|</span> <span class="kw-2">&</span><span class="ident">b</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>;
|
||
<span class="kw">let</span> <span class="ident">expected</span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">set</span> {
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">expected</span>.<span class="ident">contains</span>(<span class="ident">x</span>));
|
||
<span class="ident">i</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i</span>, <span class="ident">expected</span>.<span class="ident">len</span>());</pre></div>
|
||
</div></div><h3 id='impl-BitXor%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='impl'><code class='in-band'>impl<'_, '_, T, S> <a class="trait" href="../../../../nom/lib/std/ops/trait.BitXor.html" title="trait nom::lib::std::ops::BitXor">BitXor</a><&'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>> for &'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-BitXor%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1055-1085' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output' class="type"><code id='Output.t'>type <a href='../../../../nom/lib/std/ops/trait.BitXor.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code></h4><div class='docblock'><p>The resulting type after applying the <code>^</code> operator.</p>
|
||
</div><h4 id='method.bitxor' class="method"><code id='bitxor.v'>fn <a href='../../../../nom/lib/std/ops/trait.BitXor.html#tymethod.bitxor' class='fnname'>bitxor</a>(self, rhs: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1082-1084' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the symmetric difference of <code>self</code> and <code>rhs</code> as a new <code>HashSet<T, S></code>.</p>
|
||
<h1 id="examples-33" class="section-header"><a href="#examples-33">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">a</span> <span class="op">^</span> <span class="kw-2">&</span><span class="ident">b</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>;
|
||
<span class="kw">let</span> <span class="ident">expected</span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>, <span class="number">5</span>];
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">set</span> {
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">expected</span>.<span class="ident">contains</span>(<span class="ident">x</span>));
|
||
<span class="ident">i</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i</span>, <span class="ident">expected</span>.<span class="ident">len</span>());</pre></div>
|
||
</div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#107' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#107' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html#tymethod.clone">Read more</a></p>
|
||
</div><h4 id='method.clone_from' class="method hidden"><code id='clone_from.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs copy-assignment from <code>source</code>. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html#method.clone_from">Read more</a></p>
|
||
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/fmt/trait.Debug.html" title="trait nom::lib::std::fmt::Debug">Debug</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../../../nom/lib/std/fmt/trait.Debug.html" title="trait nom::lib::std::fmt::Debug">Debug</a>, </span></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#929-936' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='../../../../nom/lib/std/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../../../nom/lib/std/fmt/struct.Formatter.html" title="struct nom::lib::std::fmt::Formatter">Formatter</a>) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Result.html" title="enum nom::lib::std::prelude::v1::v1::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../../../nom/lib/std/fmt/struct.Error.html" title="struct nom::lib::std::fmt::Error">Error</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#933-935' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="../../../../nom/lib/std/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
|
||
</div></div><h3 id='impl-Default' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>, </span></code><a href='#impl-Default' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#977-986' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.default' class="method"><code id='default.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#983-985' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates an empty <code>HashSet<T, S></code> with the <code>Default</code> value for the hasher.</p>
|
||
</div></div><h3 id='impl-Eq' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a>, </span></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#921-926' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Extend%3C%26%27a%20T%3E' class='impl'><code class='in-band'>impl<'a, T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html" title="trait nom::lib::std::prelude::v1::v1::Extend">Extend</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a>,<br> T: 'a + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Copy.html" title="trait nom::lib::std::prelude::v1::v1::Copy">Copy</a>, </span></code><a href='#impl-Extend%3C%26%27a%20T%3E' class='anchor'></a><span class='since' title='Stable since Rust version 1.4.0'>1.4.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#965-974' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.extend-1' class="method hidden"><code id='extend.v-1'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html#tymethod.extend' class='fnname'>extend</a><I>(&mut self, iter: I) <span class="where fmt-newline">where<br> I: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a><Item = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#971-973' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Extends a collection with the contents of an iterator. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html#tymethod.extend">Read more</a></p>
|
||
</div></div><h3 id='impl-Extend%3CT%3E' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html" title="trait nom::lib::std::prelude::v1::v1::Extend">Extend</a><T> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a>, </span></code><a href='#impl-Extend%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#953-962' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.extend' class="method hidden"><code id='extend.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html#tymethod.extend' class='fnname'>extend</a><I>(&mut self, iter: I) <span class="where fmt-newline">where<br> I: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a><Item = T>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#959-961' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Extends a collection with the contents of an iterator. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.Extend.html#tymethod.extend">Read more</a></p>
|
||
</div></div><h3 id='impl-FromIterator%3CT%3E' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/iter/trait.FromIterator.html" title="trait nom::lib::std::iter::FromIterator">FromIterator</a><T> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a>, </span></code><a href='#impl-FromIterator%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#939-950' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_iter' class="method hidden"><code id='from_iter.v'>fn <a href='../../../../nom/lib/std/iter/trait.FromIterator.html#tymethod.from_iter' class='fnname'>from_iter</a><I>(iter: I) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> I: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a><Item = T>, </span></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#945-949' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates a value from an iterator. <a href="../../../../nom/lib/std/iter/trait.FromIterator.html#tymethod.from_iter">Read more</a></p>
|
||
</div></div><h3 id='impl-IntoIterator' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a href='#impl-IntoIterator' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1222-1250' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Item' class="type"><code id='Item.t'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = T</code></h4><div class='docblock'><p>The type of the elements being iterated over.</p>
|
||
</div><h4 id='associatedtype.IntoIter' class="type"><code id='IntoIter.t'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.IntoIter.html" title="struct nom::lib::std::collections::hash_set::IntoIter">IntoIter</a><T></code></h4><div class='docblock'><p>Which kind of iterator are we turning this into?</p>
|
||
</div><h4 id='method.into_iter' class="method"><code id='into_iter.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.IntoIter.html" title="struct nom::lib::std::collections::hash_set::IntoIter">IntoIter</a><T></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1247-1249' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a consuming iterator, that is, one that moves each value out
|
||
of the set in arbitrary order. The set cannot be used after calling
|
||
this.</p>
|
||
<h1 id="examples-37" class="section-header"><a href="#examples-37">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
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||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">set</span> <span class="op">=</span> <span class="ident">HashSet</span>::<span class="ident">new</span>();
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||
<span class="ident">set</span>.<span class="ident">insert</span>(<span class="string">"a"</span>.<span class="ident">to_string</span>());
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<span class="ident">set</span>.<span class="ident">insert</span>(<span class="string">"b"</span>.<span class="ident">to_string</span>());
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||
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||
<span class="comment">// Not possible to collect to a Vec<String> with a regular `.iter()`.</span>
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||
<span class="kw">let</span> <span class="ident">v</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="ident">set</span>.<span class="ident">into_iter</span>().<span class="ident">collect</span>();
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||
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||
<span class="comment">// Will print in an arbitrary order.</span>
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||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">v</span> {
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||
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">x</span>);
|
||
}</pre></div>
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||
</div></div><h3 id='impl-IntoIterator-1' class='impl'><code class='in-band'>impl<'a, T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a> for &'a <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a href='#impl-IntoIterator-1' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1211-1219' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Item-1' class="type"><code id='Item.t-1'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a </a>T</code></h4><div class='docblock'><p>The type of the elements being iterated over.</p>
|
||
</div><h4 id='associatedtype.IntoIter-1' class="type"><code id='IntoIter.t-1'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Iter.html" title="struct nom::lib::std::collections::hash_set::Iter">Iter</a><'a, T></code></h4><div class='docblock'><p>Which kind of iterator are we turning this into?</p>
|
||
</div><h4 id='method.into_iter-1' class="method hidden"><code id='into_iter.v-1'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -> <a class="struct" href="../../../../nom/lib/std/collections/hash_set/struct.Iter.html" title="struct nom::lib::std::collections::hash_set::Iter">Iter</a><'a, T></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1216-1218' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates an iterator from a value. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#tymethod.into_iter">Read more</a></p>
|
||
</div></div><h3 id='impl-PartialEq%3CHashSet%3CT%2C%20S%3E%3E' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.PartialEq.html" title="trait nom::lib::std::prelude::v1::v1::PartialEq">PartialEq</a><<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a>, </span></code><a href='#impl-PartialEq%3CHashSet%3CT%2C%20S%3E%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#906-918' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.eq' class="method hidden"><code id='eq.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, other: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#911-917' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.PartialEq.html#tymethod.eq">Read more</a></p>
|
||
</div><h4 id='method.ne' class="method hidden"><code id='ne.v'><span class="docblock attributes">#[must_use]
|
||
</span>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Rhs) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#215-217' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>!=</code>.</p>
|
||
</div></div><h3 id='impl-Sub%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='impl'><code class='in-band'>impl<'_, '_, T, S> <a class="trait" href="../../../../nom/lib/std/ops/trait.Sub.html" title="trait nom::lib::std::ops::Sub">Sub</a><&'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>> for &'_ <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/hash/trait.BuildHasher.html" title="trait nom::lib::std::hash::BuildHasher">BuildHasher</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Default.html" title="trait nom::lib::std::prelude::v1::v1::Default">Default</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Eq.html" title="trait nom::lib::std::prelude::v1::v1::Eq">Eq</a> + <a class="trait" href="../../../../nom/lib/std/hash/trait.Hash.html" title="trait nom::lib::std::hash::Hash">Hash</a> + <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-Sub%3C%26%27_%20HashSet%3CT%2C%20S%3E%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1088-1118' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output-1' class="type"><code id='Output.t-1'>type <a href='../../../../nom/lib/std/ops/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code></h4><div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
|
||
</div><h4 id='method.sub' class="method"><code id='sub.v'>fn <a href='../../../../nom/lib/std/ops/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: &<a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S>) -> <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/std/collections/hash/set.rs.html#1115-1117' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the difference of <code>self</code> and <code>rhs</code> as a new <code>HashSet<T, S></code>.</p>
|
||
<h1 id="examples-34" class="section-header"><a href="#examples-34">Examples</a></h1>
|
||
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashSet</span>;
|
||
|
||
<span class="kw">let</span> <span class="ident">a</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
<span class="kw">let</span> <span class="ident">b</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>].<span class="ident">into_iter</span>().<span class="ident">collect</span>();
|
||
|
||
<span class="kw">let</span> <span class="ident">set</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">a</span> <span class="op">-</span> <span class="kw-2">&</span><span class="ident">b</span>;
|
||
|
||
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>;
|
||
<span class="kw">let</span> <span class="ident">expected</span> <span class="op">=</span> [<span class="number">1</span>, <span class="number">2</span>];
|
||
<span class="kw">for</span> <span class="ident">x</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="ident">set</span> {
|
||
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">expected</span>.<span class="ident">contains</span>(<span class="ident">x</span>));
|
||
<span class="ident">i</span> <span class="op">+</span><span class="op">=</span> <span class="number">1</span>;
|
||
}
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i</span>, <span class="ident">expected</span>.<span class="ident">len</span>());</pre></div>
|
||
</div></div></div><h2 id='synthetic-implementations' class='small-section-header'>Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a></h2><div id='synthetic-implementations-list'><h3 id='impl-RefUnwindSafe' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a>, </span></code><a href='#impl-RefUnwindSafe' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Send' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Send.html" title="trait nom::lib::std::prelude::v1::v1::Send">Send</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Send.html" title="trait nom::lib::std::prelude::v1::v1::Send">Send</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Send.html" title="trait nom::lib::std::prelude::v1::v1::Send">Send</a>, </span></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sync.html" title="trait nom::lib::std::prelude::v1::v1::Sync">Sync</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sync.html" title="trait nom::lib::std::prelude::v1::v1::Sync">Sync</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sync.html" title="trait nom::lib::std::prelude::v1::v1::Sync">Sync</a>, </span></code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Unpin' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Unpin.html" title="trait nom::lib::std::prelude::v1::v1::Unpin">Unpin</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Unpin.html" title="trait nom::lib::std::prelude::v1::v1::Unpin">Unpin</a>,<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Unpin.html" title="trait nom::lib::std::prelude::v1::v1::Unpin">Unpin</a>, </span></code><a href='#impl-Unpin' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-UnwindSafe' class='impl'><code class='in-band'>impl<T, S> <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../../../../nom/lib/std/collections/struct.HashSet.html" title="struct nom::lib::std::collections::HashSet">HashSet</a><T, S> <span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a>,<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a>, </span></code><a href='#impl-UnwindSafe' class='anchor'></a></h3><div class='impl-items'></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-Any' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>, </span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#108-112' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#109-111' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
|
||
</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>, </span></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-217' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214-216' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
|
||
</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Sized.html" title="trait nom::lib::std::prelude::v1::v1::Sized">Sized</a>, </span></code><a href='#impl-BorrowMut%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220-224' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221-223' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
|
||
</div></div><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.From.html" title="trait nom::lib::std::prelude::v1::v1::From">From</a><T> for T</code><a href='#impl-From%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#564-568' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -> T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#565-567' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
|
||
</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Into.html" title="trait nom::lib::std::prelude::v1::v1::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.From.html" title="trait nom::lib::std::prelude::v1::v1::From">From</a><T>, </span></code><a href='#impl-Into%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-560' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -> U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#557-559' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
|
||
</div></div><h3 id='impl-IntoIterator-2' class='impl'><code class='in-band'>impl<I> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html" title="trait nom::lib::std::prelude::v1::v1::IntoIterator">IntoIterator</a> for I <span class="where fmt-newline">where<br> I: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Iterator.html" title="trait nom::lib::std::prelude::v1::v1::Iterator">Iterator</a>, </span></code><a href='#impl-IntoIterator-2' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/iter/traits/collect.rs.html#243-250' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Item-2' class="type"><code id='Item.t-2'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = <I as <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Iterator.html" title="trait nom::lib::std::prelude::v1::v1::Iterator">Iterator</a>>::<a class="type" href="../../../../nom/lib/std/prelude/v1/v1/trait.Iterator.html#associatedtype.Item" title="type nom::lib::std::prelude::v1::v1::Iterator::Item">Item</a></code></h4><div class='docblock'><p>The type of the elements being iterated over.</p>
|
||
</div><h4 id='associatedtype.IntoIter-2' class="type"><code id='IntoIter.t-2'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = I</code></h4><div class='docblock'><p>Which kind of iterator are we turning this into?</p>
|
||
</div><h4 id='method.into_iter-2' class="method hidden"><code id='into_iter.v-2'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -> I</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/iter/traits/collect.rs.html#247-249' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates an iterator from a value. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.IntoIterator.html#tymethod.into_iter">Read more</a></p>
|
||
</div></div><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl<T> <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html" title="trait nom::lib::std::prelude::v1::v1::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br> T: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Clone.html" title="trait nom::lib::std::prelude::v1::v1::Clone">Clone</a>, </span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#80-92' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned' class="type"><code id='Owned.t'>type <a href='../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html#associatedtype.Owned' class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
|
||
</div><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&self) -> T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
|
||
</div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
|
||
</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="../../../../nom/lib/std/prelude/v1/v1/trait.ToOwned.html#method.clone_into">Read more</a></p>
|
||
</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../../../nom/lib/std/convert/trait.TryFrom.html" title="trait nom::lib::std::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../../../nom/lib/std/prelude/v1/v1/trait.Into.html" title="trait nom::lib::std::prelude::v1::v1::Into">Into</a><T>, </span></code><a href='#impl-TryFrom%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#601-610' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='../../../../nom/lib/std/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="../../../../nom/lib/std/convert/enum.Infallible.html" title="enum nom::lib::std::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
|
||
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='../../../../nom/lib/std/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Result.html" title="enum nom::lib::std::prelude::v1::v1::Result">Result</a><T, <T as <a class="trait" href="../../../../nom/lib/std/convert/trait.TryFrom.html" title="trait nom::lib::std::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="../../../../nom/lib/std/convert/trait.TryFrom.html#associatedtype.Error" title="type nom::lib::std::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#607-609' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
|
||
</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="../../../../nom/lib/std/convert/trait.TryInto.html" title="trait nom::lib::std::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="../../../../nom/lib/std/convert/trait.TryFrom.html" title="trait nom::lib::std::convert::TryFrom">TryFrom</a><T>, </span></code><a href='#impl-TryInto%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#587-596' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='../../../../nom/lib/std/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = <U as <a class="trait" href="../../../../nom/lib/std/convert/trait.TryFrom.html" title="trait nom::lib::std::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="../../../../nom/lib/std/convert/trait.TryFrom.html#associatedtype.Error" title="type nom::lib::std::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
|
||
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='../../../../nom/lib/std/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -> <a class="enum" href="../../../../nom/lib/std/prelude/v1/v1/enum.Result.html" title="enum nom::lib::std::prelude::v1::v1::Result">Result</a><U, <U as <a class="trait" href="../../../../nom/lib/std/convert/trait.TryFrom.html" title="trait nom::lib::std::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="../../../../nom/lib/std/convert/trait.TryFrom.html#associatedtype.Error" title="type nom::lib::std::convert::TryFrom::Error">Error</a>></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#593-595' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
|
||
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