[v3] ext/type_traits.h

[Martin Sebor]

Peter Dimov wrote:
> Martin Sebor wrote:
> 
>> The standalone add_unsigned critters would be okay too. They
>> would be in line with all the other little traits classes. I
>> don't see a big advantage of one approach over the other.
> 
> 
> The standalone to_unsigned can be used as a metafunction.

Ah, neat. I hadn't thought of that. And the limits one couldn't
because...? It doesn't have the right name?

Martin