Re: [boost] [rfc] small flags library

From: Iain Denniston (iain.denniston_at_[hidden])
Date: 2007-08-21 16:09:25

> Have you seen the proposed "enum class" ?  http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf

No I hadn't seen that - cheers - looks very interesting. Certainly more 
than capable of rectifying the issue I was looking at.

> Until/unless this is adopted, maybe some 
> macro-magic could be used to implement it, e.g.
> 
> ENUM_CLASS(foo) { ENUM(foo_1,1<<0) , ENUM(foo_2,1<<1) };
> 
> This would need to expand to an enum wrapped in a class, as described 
> in section 2.1 of the doc linked above.  I'm not certain if this can be 
> done with macros, but the Boost preprocessor library has lots of magic 
> that would help.

Yeah I can see how that might work - I'll have a play around and see if 
I can come up with anything, might well prove much more useful than my 
original proposal anyway.

Cheers

IAIN