Metaprogramming, generate argument list.

Nicholas Wilson via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Mon Aug 22 23:37:09 PDT 2016


On Monday, 22 August 2016 at 22:01:51 UTC, ciechowoj wrote:
> Is it possible to generate an argument list that contains 
> pointers to local variables at compile time?
>
> For example, consider following code:
>
> template Repeat(alias int N, alias variable)
> {
>     // Magic
>
>     alias Repeat = /* Even more magic */;
> }
>
> void foo(int* x, int* y, int* z)
> {
>     // [...]
> }
>
> void fun()
> {
>     int bar = 42;
>
>     foo(Repeat!(3, bar)); // want to replace it with &bar, 
> &bar, &bar
> }

  template Repeat( int N, alias variable)
  {
      static if (N == 1)
         alias Repeat = variable;
     else
          alias Repeat = AliasSeq!(variable,Repeat!(N-1,variable));
  }

Not sure if it will work with addresses of variables.



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