On Friday, 19 July 2013 at 22:18:54 UTC, Gary Willoughby wrote:
The problem with that though is that with size arguments >
int.max will wrap when being cast to int (T)? i.e.:
I see. The only way to guarantee there's no wraparound with a
literal is to use a string.... which messes up the arithmetic but
works for anything:
template inBounds(T, string size)
{
import std.conv;
enum result = (T.min <= to!T(size));// && size <= T.max);
}
writefln("%s", inBounds!(int, "-5995534353510").result); //
false! eh?
That would throw at compile time - to checks for overflows, and
since it is an enum in a template, it is run in CTFE.
So kinda awkward but would work fairly reliabily.
