Templated Enums?

[Era Scarecrow]

On Wednesday, 6 June 2012 at 20:52:14 UTC, bearophile wrote:
> That seems correct, this works:
>
> template Foo(T) {
>    enum Foo {
>        bitsPerT = T.sizeof * 8,
>    }
> }
> void main() {
>     pragma(msg, Foo!int.bitsPerT);
> }
>
>
> So if template Foo(T){enum Foo{}} works, then I think it should 
> also work the enum Foo(T){} syntax.
>
> So far I don't think I have had to use templated enums, but if 
> other people have such need, than this thread and this post 
> have enough material for a little enhancement request.

  Well if it was only 1-2 value I wouldn't probably have bothered. 
However when there are several flags enums and values that are 
calculated based on eachother and used together; I wouldn't want 
to write enums manually for each type.

  Seems I'm being thrown now into the deep end of templates and 
constraints and traits and trying to fully understand it enough 
to use it all. What an exciting time to be alive :)