Mercurial > projects > ldc
diff tests/mini/tupleval.d @ 648:8d850fa25713
Fix VarDecls for tuples. Closes #99.
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.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Sun, 05 Oct 2008 11:47:47 +0200 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/mini/tupleval.d Sun Oct 05 11:47:47 2008 +0200 @@ -0,0 +1,30 @@ +module foo; + +template ParameterTupleOf( Fn ) +{ + static if( is( Fn Params == function ) ) + alias Params ParameterTupleOf; + else static if( is( Fn Params == delegate ) ) + alias ParameterTupleOf!(Params) ParameterTupleOf; + else static if( is( Fn Params == Params* ) ) + alias ParameterTupleOf!(Params) ParameterTupleOf; + else + static assert( false, "Argument has no parameters." ); +} + +struct S +{ + int opApply(T)(T dg) + { + alias ParameterTupleOf!(T) U; + U u; + u[0] = 1; + u[1] = 2; + return 0; + } +} + +void main() +{ + foreach(int x, int y; S()){} +}