问题描述
我知道当访问属性的setter / getter方法时，我应该使用[ self setThisValue：@a]; ，而不是 thisValue = @a; 然而在下面的例子中我可以看到添加自我文档，我发送消息到iVar属性，而不是局部范围的变量，但它做任何其他的
I understand that when accessing setter / getter methods for properties I should be using [self setThisValue:@"a"]; rather than thisValue = @"a"; However with the example below I can see that adding self documents that I am sending a message to an iVar property rather than a locally scoped variable, but does it do anything else in this case?
@interface CustomController : UIViewController {
NSMutableArray *foundList;
}
@property(nonatomic, retain) NSMutableArray *foundList;
@end
。
[[self foundList] addObject:eachObject]; // I usually write this ...
或
[foundList addObject:eachObject];
gary。
推荐答案
如果你有一个ivar的定义属性，你应该使用它，而不是直接访问ivar。这允许子类重写setter / getter并做一些不同的只是从ivar获取值。
If you have a defined property for an ivar, you should use it rather than accessing the ivar directly. That allows subclasses to override the setter/getter and do something different to just fetching the value from the ivar.
唯一的例外是init方法和dealloc。
The only exception is in init methods and dealloc.
这篇关于iVar属性，通过自我访问？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！