SceneGraph Interviewee Task regex Wrapper to pass shared_ptr to &, const &, *, const * through std::bind. Linker error while passing constexpr variable as const & non-template template parameters for container stream insertion: SFINAE Clang-IsBaseOf ECE2574_Function_Calling_Example set/map equal_range bug in libc++ mddd using directives: qualified lookup rules are different from unqualified lookup rules