std::invocable(3) Library Functions Manual std::invocable(3) NAME std::invocable - [concept.invocable], concept invocable SYNOPSIS #include Concept definition template concept invocable = is_invocable_v<_Fn, _Args...> Detailed Description [concept.invocable], concept invocable Author Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ std::invocable(3)