Mercurial > projects > ldc
comparison 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> |
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| date | Sun, 05 Oct 2008 11:47:47 +0200 |
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| 646:51c4d1a64da6 | 648:8d850fa25713 |
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| 1 module foo; | |
| 2 | |
| 3 template ParameterTupleOf( Fn ) | |
| 4 { | |
| 5 static if( is( Fn Params == function ) ) | |
| 6 alias Params ParameterTupleOf; | |
| 7 else static if( is( Fn Params == delegate ) ) | |
| 8 alias ParameterTupleOf!(Params) ParameterTupleOf; | |
| 9 else static if( is( Fn Params == Params* ) ) | |
| 10 alias ParameterTupleOf!(Params) ParameterTupleOf; | |
| 11 else | |
| 12 static assert( false, "Argument has no parameters." ); | |
| 13 } | |
| 14 | |
| 15 struct S | |
| 16 { | |
| 17 int opApply(T)(T dg) | |
| 18 { | |
| 19 alias ParameterTupleOf!(T) U; | |
| 20 U u; | |
| 21 u[0] = 1; | |
| 22 u[1] = 2; | |
| 23 return 0; | |
| 24 } | |
| 25 } | |
| 26 | |
| 27 void main() | |
| 28 { | |
| 29 foreach(int x, int y; S()){} | |
| 30 } |