“在线”的有用性特点

本文介绍了“在线”的有用性特点的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 内联有两个方面： inline 关键字将被忽略如果编译器确定函数不能内联。 有一个编译器优化（在Visual Studio上，我不知道GCC），告诉编译器内联所有函数。 从这里我得出结论，我从来不需要麻烦内联。 或者是否有任何情况下会优先使用手动内联？ inline 关键字有两个函数： 它可以作为编译器执行内联优化的提示（这在现代编译器上基本上是无用的，它在有或没有关键字的情况下内联） 它告诉编译器/链接器忽略一个定义规则： inline 'd符号可以在多个翻译单元中定义（通常是因为它定义在头部，包括多个文件）。通常，这将导致链接器错误，但是当您使用 inline 关键字时允许。 There's two things about inlining:The inline keyword will be ignored if the compiler determines that the function cannot be inlined.There is a compiler optimization (on Visual Studio, I don't know about GCC) that tells the compiler to inline all functions where possible.From this I conclude that I never need to bother about inlining. I just have to turn on the compiler optimization for the release build.Or are there any situations where manually inlining would be preferred? 解决方案 The inline keyword has two functions:it serves as a hint to the compiler to perform the inlining optimization (this is basically useless on modern compilers, which inline aggressively with or without the keyword)it tells the compiler/linker to ignore the One Definition Rule: that the inline'd symbol may be defined in multiple translation units (typically because it is defined in a header, that is included from multiple files). Normally, this would result in a linker error, but it is allowed when you use the inline keyword. 这篇关于“在线”的有用性特点的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！