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報錯:Xcode 7.3 cannot create __weak reference in file using manual reference counting

在使用__weak 的時候報錯 Xcode 7.3 cannot create __weak reference in file using manual reference counting

解決方法一:

設定專案中的build setting -> Apple LLVM7.1 - Language - Objective C -> Weak References in Manual Retain Release YES


解決方法二:


用__unsafe_unretained 代替__weak

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