声明一个函数为＆QUOT的好处;内联＆QUOT;？ [英] Benefits of declaring a function as "inline"?

问题描述

每当我读到C中的内联的声明中提到，这是只是一个提示编译器（即它没有遵守它）。有没有加入它，然后任何好处，或者我应该只依赖于编译器比我知道好？

Every time I read about the "inline" declaration in C it is mentioned that it is only a hint to the compiler (i.e. it does not have to obey it). Is there any benefit to adding it then, or should I just rely on the compiler knowing better than me?

推荐答案

有使用在线关键字两个原因。其一是优化的提示，你可以放心地忽略它;你的编译器是想忽略这一点。另一个原因是允许的功能在多个翻译单位存在，并且使用是绝对必要的。如果你把一个函数变成例如.H头文件，你最好把它声明内联。

There are two reasons to use the inline keyword. One is an optimization hint, and you can safely ignore it; your compiler is like to ignore it too. The other reason is to allow a function to exist in multiple translation units, and that usage is strictly necessary. If you put a function into a .h header file for example, you'd better declare it inline.

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