本文介绍了什么是“operator =必须是非静态成员”意思?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
我正在创建一个双向链表,并且重载了operator =以使列表等于另一个:
I'm in the process of creating a double-linked list, and have overloaded the operator= to make on list equal another:
template<class T>
void operator=(const list<T>& lst)
{
clear();
copy(lst);
return;
}
但我得到这个错误,当我尝试编译:
but I get this error when I try to compile:
container_def.h(74) : error C2801: 'operator =' must be a non-static member
此外,如果有帮助,74行是定义的最后一行,带有}。
Also, if it helps, line 74 is the last line of the definition, with the "}".
推荐答案
它的意思:操作符重载与1参数必须是成员函数。 (在类中声明)
Exactly what it says: operator overloads with 1 parameter must be member functions. (declared inside the class)
template<class T>
void list<T>::operator=(const list<T>& rhs)
{
...
}
此外,可能是一个好主意,返回LHS从=所以你可以链接它(如 a = b = c
) - 所以使它
列表< T>
Also, it's probably a good idea to return the LHS from = so you can chain it (like a = b = c
) - so make itlist<T>& list<T>::operator=....
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