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std::error_category::operators

STD：错误[医]类别：操作员==，%21=，<

bool operator==( const error_category& rhs ) const;(1)(since C++11)
bool operator!=( const error_category& rhs ) const;(2)(since C++11)
bool operator<( const error_category& rhs ) const;(3)(since C++11)

与另一个错误类别进行比较。

1%29检查是否*this和rhs引用同一个对象。

2%29检查是否*this和rhs不要引用同一个对象。

3%29份订单*this和rhs按…的顺序this和&rhs相当于std::less<const error_category*>()(this, &rhs)...

参数

code-specifies the error code to compare
condition-specifies the error condition to compare

返回值

1%29true如果*this和rhs引用同一个对象，false否则。

2%29true如果*this和rhs不要引用同一个对象，false否则。

3%29true如果*this小于rhs按…的顺序定义this和&rhs...

例外

noexcept规格：

noexcept

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