inferred size for static array initialization

[Erik Smith via Digitalmars-d-learn]

I tried to combine the two solutions (Basile with the wrapper, 
Marco with the struct initializer support) but it didn't work. 
The struct initializer is not a array literal (seems obvious 
now).   I might go with the 2nd but it's pretty heavy just to get 
the size.

Thanks.


struct S {
     int a, b;
}

auto toStaticArray(alias array)()
{
     struct S { int a, b; }

     immutable tab = {
         static enum S[] s = array;
         return cast(typeof(s[0])[s.length])s;
     }();
     return tab;
}

enum a = toStaticArray!([{1,2},{3,4}]);  // error