Objective-C和指针 [英] Objective-C and Pointers

问题描述

我了解指针，知道它们是什么以及如何声明它们.但是，问题在于，所有书籍，教程或指南都没有真正解释为什么使用指针.

I understand pointers and know what they are and how to declare them. But, the problem is, none of the books, tutorials or guides actually explain why pointers are used.

我来自PHP背景，没有使用指针.因此，当我声明一个字符串时，我不使用指针.

I come from a PHP background, where pointers are not used. So when I declare a string, I don't use a pointer.

我看到在创建方法时头文件中使用了指针，但我真的不明白为什么要使用它们.

I see pointers being used in header files when creating methods, and I really don't understand why they are there for.

任何帮助将不胜感激.

推荐答案

我认为大部分讨论都是围绕该主题进行的.您可以点击这些链接

I think most of the discussion are done on this topic. you can follow these links

什么指针的障碍是什么?如何克服指针?

为什么使用指针?

http://ruel.me/blog/2010/11/22/why-use-pointers/

http://duramecho.com/ComputerInformation/WhyCPointers.html

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