Frist Draft (in this forum): Enum Parameters

[Richard (Rikki) Andrew Cattermole]

Enum as a keyword has quite different meaning, I suggest ``__ctfe`` 
instead as it already has a similar meaning.

I looked for discussion to its interaction with string interpolation, 
and there is none.

Currently I see no benefit from requiring a known at compile time 
expression to be passed to a parameter.

If however it resulted in that function parameter being treated as a 
template parameter that would be different. But I don't see anything 
that suggests this.