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enumerateanddelete's Introduction

EnumerateAndDelete

iOS 中各种可遍历的对象,在遍历中删除元素是否会崩溃?

结论

对 可变且可遍历的对象,记为 map, 进行遍历

  1. 正序遍历过程中,删除元素,如果遍历长度固定,则有可能引发崩溃;例如:foriCountMethod
  2. 正序遍历过程中,删除元素,如果遍历长度不固定,且为 map.count,则不会引发崩溃;例如:foriMethod
  3. 倒序遍历过程中,删除元素,不会引发崩溃;例如:foriRevertMethod
  4. 字典使用 -(void)enumerate* 遍历过程中,删除元素,不会引发崩溃;例如:dictionaryMethod
  5. 集合使用 -(void)enumerate* 遍历过程中,删除元素,不会引发崩溃;例如:mutableSetMethod
  6. NSPointerArray 遍历过程中,删除元素,与 NSMutableArray 的结果一致;例如:pointerArrayMethod

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