How do I iterate over enum members at runtime?

[Jesse Phillips]

You must iterate a compile time only construct.  So yes it would be nice to be able to say: static foreach and have the compiler tell you, no I can't do that (and force it if it can).

Andrej Mitrovic Wrote:

> Well in this case it works, but it's not always so easy. For example:
> 
> import std.conv;
> enum Metrics : int
> {
>     val0,
>     val1,
>     val2
> }
> 
> void foo(int m)
> {
> }
> 
> void main()
> {
>    foreach (index; 0..3)
>    {
>        foo(mixin("Metrics.val" ~ to!string(index)));
>    }
> }
> 
> So even though you might think "hey, it's obvious index in this case
> can never be anything other than 0, 1, or 2", you still won't be able
> to compile this. CTFE is a tricky thing.