在Objective-C中使用指针? [英] Using Pointers in Objective-C?

问题描述

每当Apple创建自己的自定义类时，它通常会创建一个指向对象的指针，而不是实际对象本身.

Whenever Apple creates its own custom classes, it often creates a pointer to the object instead of the actual object itself.

例如，不要这样做:

Class object

他们经常这样做:

Class *object = [[Class alloc] init];

为什么经常使用指针而不是将对象放在堆栈上?是否出于某种技术原因，因为我认为这样做没有任何直接好处.

Why are pointers so commonly used instead of putting the object on the stack? Is there some technical reason for this, because I don't see any immediate benefit of doing so.

如果Objective-C不支持堆栈上的对象，它们如何创建任何非指针?我的意思是我已经看到人们直接使用NSInteger.

If Objective-C doesn't support objects on the stack how can they create any non-pointers? I mean I have seen people use NSInteger directly.

推荐答案

Objective-C不支持堆栈中的对象.

Objective-C doesn't support objects on the stack.

关于Mike Ash的博客

Fantastic explanation on Mike Ash's blog here

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