[boost] std::map::find() wrapper

Hi, I've written a small wrapper for std::map::find() (and map-like containers/ranges) that returns a pointer to the value if found (or NULL if not found). See https://svn.boost.org/trac/boost/ticket/5227 The advantage is that you don't need the container type name (for ::reference), you can initialize the pointer inside an if condition, you don't have to compare against ::end() and you don't have to use ->second. For containers of pointers to objects, the wrapper could do an additional dereference. Do you think this would be useful for inclusion in Boost? Greetings, Olaf