2 ([a-zA-Z_][a-zA-Z_0-9]*[ ])*([a-zA-Z_][a-zA-Z_0-9]*::)*[a-zA-Z_][a-zA-Z_0-9]*([ ]?[*&])* error warning style performance portability information Obsolescent Obsolete c99 any variadic (-?[0-9]*[,:])*([-]?[0-9]+)? strlen argvalue sizeof mul first middle last [.][a-z]+ std-like array-like 1 2 4 8 s u 1 20 true false [a-zA-Z_][a-zA-Z_0-9]* [a-zA-Z_][a-zA-Z_0-9:,]* resize clear push pop find insert erase change-content change-internal change at_index item buffer buffer-nt start-iterator end-iterator iterator size empty