Re: [boost] Koenig lookup swap.

From: François Duranleau (duranlef_at_[hidden])
Date: 2007-08-13 10:48:58

On Sat, 11 Aug 2007, Joseph Gauterin wrote:

> Would anyone be interested in me adding an koenig lookup swap function
> to boost? (I would say it belongs in boost.utility).
>
> It would be a swap function that uses Koenig lookup to find the 'best'
> swap funciton, falling back on std::swap like this:
>
> template <class T>
> void koenig_swap(T& left, T& right)
> {
>  using std::swap;
>  swap(left,right);
> }
>
> Several boost libraries (multi array, compressed pair, graph,
> optional, spirit) already use this technique, each time explicitly
> with 'using std::swap' instead of abstracting it out.

I feel a little dumb, but I have to ask. What is the problem with 
overloading std::swap? What does this koenig_swap offer better?

-- 
François Duranleau