Introduction - If you have any usage issues, please Google them yourself
OC syntax has been considered too much trouble, the vast majority of messages are sent with long function name. In fact, this is a double-edged sword, the positive side, it makes the code easier to read fairly, because almost all of the methods are described in full in English, but if you follow the rules, then naming, parameter types and methods of action is also a Seiji Chu, but the bad side, it makes a lot more time to coding unnecessary keystrokes, reducing the efficiency of development