Ugh don't I love making silly posts like these. ref won't work for any
types, not just floats, since it uses the .init property.
My real problem was that I was using assignment in my first example
instead of returning a value. Using map with ref doesn't make much
sense. So my complaints are void.
On 6/3/11, Andrej Mitrovic <andrej.mitrov...@gmail.com> wrote:
> Offending line in map:
> alias typeof(_fun(.ElementType!R.init)) ElementType;
>
> So it tires to pass .init which will be nan for floats.
>
> A quick workaround would be:
> static if (isFloatingPoint!(ElementType!R))
> {
> .ElementType!R x;
> alias typeof(_fun(x)) ElementType;
> }
> else
> {
> alias typeof(_fun(.ElementType!R.init)) ElementType;
> }
>
> Also, my example was just a little flawed (semantically speaking),
> since I was missing a return statement:
>
> double[10] arr;
> arr[] = 1.0;
> auto result = map!((ref double sample){ return 1.0; })(arr[]);
>
> This will then work with that change.
>
