On Wednesday, 17 April 2013 at 18:56:43 UTC, Simen Kjaeraas wrote:
On 2013-04-17, 19:15, Janissary wrote:
Is it possible to evaluate an enum's base type? Ideally
something like:
enum somestrs : string { ... }
enum d = 0.0;
template EnumBaseType(E) if (is(E==enum)) { ... }
unittest {
static assert( is(EnumBaseType!somestrs == string) );
static assert( is(EnumBaseType!d : float) );
static assert(!is(EnumBaseType!d == float) );
}
A template like this would make at least my life easier.
Whenever you want to do weird stuff with types, std.traits[1]
should
be your #1 stop. And quite correctly,
std.traits.OriginalType[2] does
what you want:
enum E : int { a }
typedef E F;
typedef const F G;
static assert(is(OriginalType!G == const int));
[1]: http://dlang.org/phobos/std_traits
[2]: http://dlang.org/phobos/std_traits#.OriginalType
Thanks, that's just what I needed.