iOS内存管理 - 澄清 [英] iOS memory management - clarifications

问题描述

我知道 alloc 和 retain 会增加对象的引用计数。是否有任何其他方法实际增加引用计数？何时/如何调用 dealloc ？

I know that alloc and retain will increase the reference count of an object. Is there any other different method that actually increment the reference count? And when/how does dealloc is called?

推荐答案

这些是保留计数增加。

1. new，但可以看作是alloc + init。

1. new, however it can be seen as alloc+init.

保留

复制创建新对象，保留计数= 1

copy creates new object with retain count=1

mutableCopy创建新对象，保留计数= 1

mutableCopy creates new object with retain count=1

dealloc <一旦保留计数达到0，就会自动调用/ code>。

dealloc is called automatically as soon as retain count reaches to 0.

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