Re: [Boost-users] bind, and member function with a parameter

"Peter Dimov" wrote

...

Just an idea -- is it possible to have one universal set of placeholders in boost? Bind, Lambda, MPL, and possibly other libraries could then use some sort of redirection to their specialized placeholders... Might help to avoid some confusion.

This isn't possible in general

Not sure I understand why... AFAIU, placeholders are either types (MPL), in which case some sort of traits can be used to redirect from, say, boost::_1 to mpl::_1, or const objects (Bind, Lambda), in which case some extra indirection through overload could possibly do the trick something like: template<class T> T redirect(const T&); template<int n> bind::arg<n> redirect(const boost::arg<n>&); Regards, Arkadiy