[boost] Re: set arithmetic proposal

From: David Abrahams (dave_at_[hidden])
Date: 2005-06-02 11:35:07

"Victor A. Wagner Jr." <vawjr_at_[hidden]> writes:

> Absent that oddity, I suspect that you could rather easily overload
> some global operators to handle what you want using any of std::set,
> std::bitset, or boost::dynamic_bitset (the backwardness of the
> comparison operators would still bother me, though).

ADL looks into the namespace of the set first, so it will probably
never work for generic code.

> Hmmmm, maybe I should look more closely at the "unordered 
> collections" (hash_set) proposal further and see if that correctly manages 
> the set concept.

It doesn't, for your definition of "correct."  

The right way to do this, IMO, is with wrapper types:

   math::set<std::string>

or whatever.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com