1 any ([-]?[0-9]+[,])*([-]?[0-9]+)?:([-]?[0-9]+)? strlen argvalue sizeof mul [.][a-z]+ std-like resize clear push pop find at_index item buffer buffer-nt start-iterator end-iterator size empty array-like 1 2 4 8 s u 1 20 true false [a-zA-Z_][a-zA-Z_0-9]*