enum inheritance

[Mike Parker]

On Monday, 15 July 2013 at 04:27:42 UTC, JS wrote:
> BTW, the usefulness is to group sub-enums into the same range. 
> This would make it easy/efficient to branch over a range in the 
> enum:
>
> if (v in colors.Red) { v is a color in red }
>
> instead of
>
> if (v is color.Red || v is color.RedOrange || ...)

if( v >= Red && v <= LastRed )