CppSpec::Util::is_functional Concept Reference

Concept definition

template<typename C>
concept CppSpec::Util::is_functional = 
    
    
    std::is_function_v<C> ||
 
    
    
    std::is_convertible_v<C, std::function<void()>> ||
 
    
    
    requires(C func) {
      requires std::is_object_v<C>;
      { func() } -> std::invocable<>;
    }