Use enum base type?

[Janissary]

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.