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From: John Maddock (john_at_[hidden])
Date: 2008-08-06 05:14:19

frederic.bron_at_[hidden] wrote:
> Dear boost implementers,
> TypeTraits is very useful, thanks you.
> However, recently, I needed something to know if a type is comparable
> (with operator<) and that was not in the library.
> Fortunately, somebody forwarded me an earlier post on the users list
> where I could find what I wanted. The implementation was inspired
> from boost/detail/is_incrementable.hpp
> I have written is_less_comparable, is_less_equal_comparable,
> is_greater_comparable... inspired from the same source and I wonder
> if it could be possible to add it to the library as I think it could
> be
> helpful for others. I give the source code below (if it is useful)
> but I am not able to make it fully general as it is in
> boost/type_traits. In particular, I do not understand all the macros
> that are
> used.

This has come up often enough that I think this is an excellent idea: I'd be
happy to help with macro usage and other details, but the most important
thing is for some docs and tests to get written :-)

It might also be useful to have a very quick mini-review of an addition like
this so folks can check that the names are all sensible choices etc (I have
a couple of minor additions that might benifit similarly). If it would help
I could set up a directory in the sandbox to add all the changes to?

Regards, John Maddock.

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