Enum of types

[Ali Çehreli]

On 05/20/2013 08:20 PM, Diggory wrote:
> I want to create an enum of some number of types, eg. { ubyte, ushort,
> uint, float }
>
> It should be straightforward to get a member of the enum from the type
> itself. Basically I have an object that stores some typed data, but the
> type may not be known at compile time, only the set of possible types.
> When constructing the object the user should be able to tell it what
> type of data it will hold. Also the underlying type of the enum should
> be efficient to store and compare.
>
> So far the best I can come up with is using a mixin and CTFE to generate
> the code for an enum plus a template function to convert from a type to
> a member of the enum, but it seems like there might be a better way?

Sounds like std.variant.Algebraic:

   http://dlang.org/phobos/std_variant.html#.Algebraic

Ali