https://cppcon.org/ https://github.com/CppCon/CppCon2020/blob/main/Presentations/the_many_shades_of_reference_wrapper/the_many_shades_of_reference_wrapper__zhihao_yuan__cppcon_2020.pdf

You may have heard of std::reference_wrapper’s role in make_tuple, but this is not today’s topic. The role that reference_wrapper plays is larger than unwrapping references in C++ standard library API. It is the language’s response to the need for references with rebinding semantics, which may …