Re: [boost] Advanced find() for associative containers

Can you elaborate on why you have a specialization that uses lower_bound()?

This provides hint for insert/emplace in case element is not found. In fact this is the default implementation, and the find() member is only used for associative containers without lower_bound().

What is the minimal C++ version required? Looks like C++14 from the auto return type.

Yes, right now C++14 is required. It is probably possible to back port this code to C++11 and maybe even C++98.