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std::operators (std::error_code)

STD：：Operator==，%21=，<%28std：：Error[医]代码%29

Defined in header ​​
bool operator==( const error_code& lhs, const error_code& rhs (1)(since C++11)
bool operator!=( const error_code& lhs, const error_code& rhs (1)(since C++11)
bool operator<( const error_code& lhs, const error_code& rhs (1)(since C++11)

比较两个错误代码对象。

1%29比较lhs和rhs为了平等。

2%29比较lhs和rhs为了平等。

3%29检查是否lhs小于rhs...

参数

lhs, rhs-error codes to compare

返回值

1%29true如果错误类别和错误值比较相等。

2%29true如果错误类别或错误值比较不相等。

3%29true如果lhs.category() < rhs.category().否则，true如果lhs.category() == rhs.category() && lhs.value() < rhs.value().否则，false

例外

noexcept规格：

noexcept

另见

categoryobtains the error_category for this error_code (public member function)

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