Specialising when swap / iter_swap exists

[Paolo Carlini]

chris wrote:

> I suspect that someone has already thought about this kind of thing, 
> but have been unable to find any references to it.

A quick reply (I'm in the middle of completely different issues): your 
suspects are definitely founded, the keyword is "move semantics", just 
google a bit and you will find **lots** of stuff. For instance:

    http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1377.htm

Paolo.