【原】Automatic Reference Counting(ARC) properties learning

1、With ARC, you should use strong instead of retain and weak instead of assign  when defining the properties.

2、ARC forbids 'dealloc','release','autorelease' key words, these words shouldn`t be explicitly invoked!

For instance,[super dealloc] [str release] are not permitted.

3、When you use [[AClass alloc] init], you don`t need to release it.

- (void)takeLastNameFrom:(Person *)person {

    NSString *oldLastname = [self lastName];

    [self setLastName:[person lastName]];

    NSLog(@"Lastname changed from %@ to %@", oldLastname, [self lastName]);
//oldLastname will stay alive until NSLog is runned
}

本文转自编程小翁博客园博客，原文链接：http://www.cnblogs.com/wengzilin/archive/2012/05/04/2482648.html，如需转载请自行联系原作者