如何读取这个C ++语句 [英] How do read this C++ statement

问题描述

我目前正在通过Prata的C ++底漆Plus，并遇到关于* this指针的这个声明：

I'm currently going through C++ primer Plus by Prata and came across this statement regarding *this pointer:

const Stock &topval(const Stock &s) const;

授予股票是一个类和topval函数，

Giving that Stock is a class and topval a function ,

您如何阅读这个语句？

我尝试使用顺时针/螺旋方法， 。
我相信，了解如何阅读它将允许我更好地理解它试图证明的概念。

I tried using the clockwise/spiral approach but I get confused by all the const. I believe that understand how to read it will allow me to better understand the concept that it is trying to prove.

谢谢！

推荐答案

             topval(              )        // topval is a member function...
                                    const; // In which *this is const...
                    const Stock &s         // Taking in a reference
                                           //     to a const Stock...
const Stock &                              // And returning a reference
                                           //     to a const Stock.

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