[Boost-users] boost::bind questions

Heya Boosters, I ran into a problem using boost::bind yesterday and, although I found a workaround, I've got a few questions. For the record I'm using boost 1.30. I stumbled onto the issue that boost::bind doesn't define the argument_type typedef (I was trying to use std::not1). After trawling the web I found a discussion, and useful workaround, about this here: http://tinyurl.com/5bl9m Questions that arose from this: o Why doesn't boost::bind support argument_type? o What other standard library function adapters does this affect? - Is it all that are derived from unary_function? o Has the operator! addition been incorporated into later versions of boost? - If not, why not? Thanks! Matt