Proposal new type "flags"

[Jason House]

I think this is a start, but I think that a complete discussion of how 
enums are used in C/C++ is required.

I think that enums are used in one of two methods:
* As bit-based masks
* As a (complete) set of values that a variable can take

I'd be ok with calling the first flags and the 2nd enums.  This would 
clean up the issues with printing enums (my personal pet peeve with D).

I think that this'll need to be expanded to include multi-bit masks and 
the option to explicitly specify the values for particular masks.


Rueschi wrote:
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> 	Hi folks,
> 
> many functions may be controlled by some flags that are combined
> in an uint value. However, this is not type safe. You can unintentionally
> provide/combine flags that are not intended for that function.
> The solution would be a "flags" data type, similar to enums: