是否可以将对象分配给int? [英] Is it possible to assign object to int?

问题描述

我有一个CCounter类，该类保存并具有由互斥锁保护的整数值.我已经定义了多个运算符，例如post/pre inc/dec返回一个整数，所以我可以这样做:

I have a CCounter class which holds and integer value protected by mutex. I've defined several operators like post/pre inc/dec returning an integer so I can do:

CCounter c(10);
int i = c++;

但是如何处理像i = c这样的简单任务呢?我试图定义朋友operator =，但是它给了我

but what do I do with a simple assignment like i = c ? I tried to define friend operator= but it gives me

operator=(int&, const CCounter&)’ must be a nonstatic member function

错误.请指教.谢谢.

推荐答案

您需要定义一个从CCounter转换为int的转换运算符.将此成员添加到您的班级:

You need to define a casting operator that casts from CCounter to int. Add this member to your class:

operator int() const {
  return ...;
}

这篇关于是否可以将对象分配给int?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IT屋！