__weak typeof(self) _self = self;
self.didChangeExeBlock = ^(void) {
__strong typeof(_self) self = _self;
if ( self == nil ) return;
[self login];
};
__weak typeof(self) _self = self;
self.didChangeExeBlock = ^(void) {
__strong typeof(_self) self = _self;
if ( self == nil ) return;
[self login];
};
本文标题:weak
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