Casting MapResult

[jmh530 via Digitalmars-d-learn]

> I suppose I would want whichever has the best performance. 
> Without testing, I'm not sure which one would be better. 
> Thoughts?
>
> I had been fighting with the map results because I didn't 
> realize there was an easy way to get just the array.

I'm actually not having much luck with your original function 
(and I tried some variations on it). It just kept outputting the 
original array without applying the function. I tried it in main 
also (without being in a function) without much luck either.