Wait, what? What is AliasSeq?

[Tofu Ninja via Digitalmars-d]

On Wednesday, 8 July 2015 at 18:01:36 UTC, Steven Schveighoffer 
wrote:
> In addition, this doesn't work:
>
> alias foo = 2;

I think you are right that that should be allowed, but just out 
of curiosity, if that was allowed, then what would the purpose of 
enum be?