[Boost-users] Objective-C++ boost integration

I'm wondering if there is any effort either at boost or elsewhere to have a library that integrates the C++ libraries with those of Objective-C++ (or Cocoa, since it seems that most treat the two as synonymous) in a nice way - for example, a smart pointer for Objective-C classes (via something like boost::intrusive_ptr), STL iterators for Objective-C containers, C++ function object integration with Objective-C selectors, etc.