摘要:
阅读别人含有block的代码时经常会看到这样一个现象:__weak __typeof(self)weakSelf = self;self.completionBlock = ^{__strong __typeof(weakSelf)strongSelf = weakSelf;};解释一下:weakS... 阅读全文
posted @ 2015-11-15 21:10
恒山之阳
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