Issue Turning Template into Variadic Template

[Artur Skawina via Digitalmars-d-learn]

On 03/30/16 20:12, jmh530 via Digitalmars-d-learn wrote:
> I wrote a version of cartesianProduct that will return the cartesian product when the some of the types are not ranges. The original code is below.
> 
> My issue is that I can't figure out how to turn it into a variadic template.

> auto mixedCartesianProduct(T, U)(T x, U y)
> {
>     import std.algorithm : cartesianProduct;
>     
>     return cartesianProduct(conditionalOnly(x), conditionalOnly(y));
> }

   auto mixedCartesianProduct(T...)(T x)
   {
       import std.range, std.algorithm : cartesianProduct;

       return mixin(`cartesianProduct(`~iota(T.length).map!`"conditionalOnly(x["~text(a)~"])"`().join(",")~`)`);
   }

artur