C ++：什么时候应该使用结构体而不是类，速度差异在哪里？ [英] C++: When should I use structs instead of classes and where are the speed differences?

问题描述

• 何时应使用 struct 而不是类？我目前使用的类从OpenGL纹理包装器到位图字体。

• When should I use a struct instead of a class? I'm currently using classes for everything from OpenGL texture wrappers to bitmap fonts.

是一个类，我使用就像一个 struct

Is a class that I use just like a struct (no making usage of inheritance, polymorphism, etc.) still slower than a struct?

推荐答案

您可能知道C ++中的结构和类别

Structs and classes in C++ as you may know differ solely by their default access level (and default accessibility of their bases: public for struct, private for class).

一些开发人员，包括我自己更喜欢使用 POD类型，即使用C样式结构，没有虚函数，基数等。结构体不应该有行为 - 它们只是数据放入一个对象的集合。

Some developers, including myself prefer to use structs for POD-types, that is, with C-style structs, with no virtual functions, bases etc. Structs should not have behavior - they are just a comglomerate of data put into one object.

但这当然是风格的问题，显然既不慢

But that is naturally a matter of style, and obviously neither is slower

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