我在用 SDK 10.6 编译这个美妙的 TCP 库时遇到了麻烦。
我得到:
/Users/cisary/Desktop/AI/AI/TCP/GCDAsyncSocket.m:185:11: error: instance variables may not be placed in class extension
uint32_t flags;
^
/Users/cisary/Desktop/AI/AI/TCP/GCDAsyncSocket.m:186:11: error: instance variables may not be placed in class extension
uint16_t config;
是什么instance variables may not be placed in class extension
意思?