????9.????????????????????????????.??Щ?????????????
?????????????????property?????????????Ч????????й???
?????????????
???????Cocoa Touch????????
??????????????????“???????”??“???й?”??????“???????”??????@property???????????????????????????????“???й?”??????????????????????????
?????????alloc ??new ??????????????????
?????????????property?????????retain???????????????
????10.??ζ?iOS?豸????????????
????Profile-> Instruments ->Time Profiler
????11.???????????????NSLog????????????str??retainCount????????????????????? ?????
=======================================================
NSMutableArray* ary = [[NSMutableArray array] retain];
NSString *str = [NSString stringWithFormat:@"test"];
[strretain];
[aryaddObject:str];
NSLog(@"%@%d"??str??[str retainCount]);
[strretain];
[strrelease];
[strrelease];
NSLog(@"%@%d"??str??[str retainCount]);
[aryremoveAllObjects];
NSLog(@"%@%d"??str??[str retainCount]);
=======================================================