Created
January 11, 2018 10:15
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单例代码例子
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| + (instancetype)shareInstance | |
| { | |
| static id instance = nil; | |
| static dispatch_once_t onceToken; | |
| dispatch_once(&onceToken, ^{ | |
| instance = [[self alloc] init]; | |
| }); | |
| return instance; | |
| } |
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