iphone - NSMutableArray 的 -removeLastObject 是否释放该对象？

Question

我正在讨论 NSMutableArray 的 -removeAllObjects、-removeLastObject 等方法。文档只说这些方法从数组中“删除”对象。被移除的对象是否被释放？

Answer 1

是的，确实如此。任何删除都会调用已删除的 NSObject 的释放。

NSArray class reference指定:

Arrays maintain strong references to their contents—in a managed memory environment, each object receives a retain message before its id is added to the array and a release message when it is removed from the array or when the array is deallocated. If you want a collection with different object ownership semantics, consider using CFArray Reference, NSPointerArray, or NSHashTable instead.