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view tests/mini/tupleval.d @ 1275:bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
It uses the machinery of the standard -simplify-libcalls pass, but optimizes
calls to the D runtime instead of calls to C libraries.
At the moment, these optimizations are implemented by this pass:
- Avoid the runtime call for `arr.length = newlen` if it can determine that
the new length isn't longer than the old one.
- Ditto for `cast(T[]) arr` if it will clearly always succeed.
(e.g. if the length of the original array is zero, or if the old element
size is a multiple of the new element size)
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Tue, 28 Apr 2009 21:58:06 +0200 |
parents | 8d850fa25713 |
children |
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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()){} }