1.类型转换
Error:Assigning to 'CalcAppDelegate *strong from incompatible type id nullable
app_delegate = (CalcAppDelegate *)[[UIApplication sharedApplication] delegate];
2.注掉图中脚本
1.类型转换
Error:Assigning to 'CalcAppDelegate *strong from incompatible type id nullable
app_delegate = (CalcAppDelegate *)[[UIApplication sharedApplication] delegate];
2.注掉图中脚本
本文标题：Xcode 8 can't run old unit tests
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