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错别字修改
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“新年”修改为“性能”
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Andy.Liu committed Sep 14, 2015
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Expand Up @@ -956,7 +956,7 @@ NSString * text;
- 更简单的debug(比如,允许拿出一个断点在 getter 方法里面,并且看谁访问了特别的 getter
- 它让意图更加清晰和明确:通过访问 ivar `_anIvar` 你可以明确的访问 `self->_anIvar`.这可能导致问题。在 block 里面访问 ivar (你捕捉并且 retain 了 self,即使你没有明确的看到 self 关键词)。
- 它自动产生KVO 通知。
- 在消息发送的时候增加的开销是微不足道的。更多关于新年问题的介绍你可以看 [Should I Use a Property or an Instance Variable?](http://blog.bignerdranch.com/4005-should-i-use-a-property-or-an-instance-variable/)
- 在消息发送的时候增加的开销是微不足道的。更多关于性能问题的介绍你可以看 [Should I Use a Property or an Instance Variable?](http://blog.bignerdranch.com/4005-should-i-use-a-property-or-an-instance-variable/)

#### Init 和 Dealloc

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