常用操作符重载
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操作符应该是member function/nomember function
1.一元运算符是member
2.=,(),[],->必须是member
3.assignment版的运算符(+=,-=,/=,*=等)都必须是member function.
4.其他二元运算符都应该是nomember function
操作符应该是member function/nomember function
1.一元运算符是member
2.=,(),[],->必须是member
3.assignment版的运算符(+=,-=,/=,*=等)都必须是member function.
4.其他二元运算符都应该是nomember function