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std::error_category::equivalent

STD：错误[医]类别：等价物

virtual bool equivalent( int code, const std::error_condition& condition ) const;(1)(since C++11)
virtual bool equivalent( const std::error_code& code, int condition ) const;(2)(since C++11)

表示的错误类别的错误代码是否等效于错误条件。*this...

1%29相当于default_error_condition(code) == condition...

2%29相当于*this == code.category() && code.value() == condition...

参数

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

返回值

true表示的错误类别的错误代码等效于给定的错误条件。*this，，，false否则。

例外

noexcept规格：

noexcept

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