foreach (x; a .. b) and foreach_reverse (x; a .. b) should be disallowed for floats

[Lars T. Kyllingstad]

Andrei Alexandrescu wrote:
> Consider:
> 
>     foreach (x; 1.0 .. 4.1) writeln(x);
>     foreach_reverse (x; 1.0 .. 4.1) writeln(x);
> 
> This sucks. foreach with interval for floating-point types should be 
> disallowed.
> 
> 
> Andrei

I didn't even know this was possible, but I agree, it's an ugly thing.

-Lars