Re: [boost] Bug: bind() escapes from boost:: namespace whenplaceholders are used

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2006-06-21 13:41:20

David Abrahams wrote:
> 
> > In an expression of the form f(x, y), f is (also) 
> > looked up in the ("associated") namespaces of x and y. Since _1 is usually 
> > of type boost::arg<1>, boost is an associated namespace for it and the 
> > function "bind" is found without an explicit boost:: qualification. 
> 
> Depending on your point of view, this might be an argument for moving
> the placeholders into a nested namespace (with a using directive to
> bring them out, of course).

That would be consistent with TR1 that has them in the std::tr1::placeholder
namespace. It may also be useful to merge the bind and lambda placeholders
to avoid issues with using lambda with bind.

- Reece
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