ChenYilong / ChenYilong/iOSInterviewQuestions
第4题
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- Swift
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Description
// .h文件
@property (nonatomic, copy) NSMutableArray *mutableArray;
// .m文件
NSMutableArray *array = [NSMutableArray arrayWithObjects:@1,@2,nil];
self.mutableArray = array;
[self.mutableArray removeObjectAtIndex:0];
因为关键词是copy，所以self.mutableArray是NSArray, 但是array得地址和self.mutableArray的地址是不一样的，有什么方法能让array得地址和self.mutableArray的地址不一样，同时使self.mutableArray是NSMutableArray
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