decltype(auto) look_up_a_string_1() { return lookup1(); } void look_up_a_string_2() { return lookup2(); } friend void A::showB(B x) {} friend void showB(B x) {} friend void showB(B::SomeType x) {} inline int add(int a, int b) {} int8t Get_Tile_Value() {} int8_t Get_Tile_Value() {} B::type test() {}; // template boost::optional<application> handle_key(application state, key_code key, coord size); // pack expansion in function arguments template<typename T...> void foo(T... args) {} test(); void A(): a(10) {} explicit A(): a(10) {} extern void f(int), g(char);