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2a999b72e8
I've implemented it this way since it doesn't require any changes in the frontend. However, I think having TypeTuple expressed as LLVM struct types would make much more sense and open the door to tuple lvalues.
31 lines
584 B
D
31 lines
584 B
D
module foo;
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template ParameterTupleOf( Fn )
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{
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static if( is( Fn Params == function ) )
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alias Params ParameterTupleOf;
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else static if( is( Fn Params == delegate ) )
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alias ParameterTupleOf!(Params) ParameterTupleOf;
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else static if( is( Fn Params == Params* ) )
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alias ParameterTupleOf!(Params) ParameterTupleOf;
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else
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static assert( false, "Argument has no parameters." );
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}
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struct S
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{
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int opApply(T)(T dg)
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{
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alias ParameterTupleOf!(T) U;
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U u;
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u[0] = 1;
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u[1] = 2;
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return 0;
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}
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}
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void main()
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{
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foreach(int x, int y; S()){}
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}
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