ios - Objective C 中的 NSArray - 它包含什么

Question

当我有这样的代码时:

Fruit *fruit= [[Fruit alloc] init];

// This is effectively two different things right, one is "fruit" - the pointer, and another thing is the object it is pointing to (the one that was allocated using alloc/init) - though not directly visible 

当我将其添加到 NSArray 时:

[myArray addObject: fruit];

添加到数组中的是实际上是一个指向 Fruit 类对象的指针，对吧？

Answer 1

是的，指针的副本，它指向一个有效的已初始化对象，因此以下不会导致问题(至少在 ARC 下):

Fruit *fruit= [[Fruit alloc] init];
[myArray addObject: fruit];
fruit = nil;     // OK, array still contains a valid Fruit object