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std::operator==,!=,<(std::error_code)

Defined in header <system_error> 
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)

Compares two error code objects.

1) Compares lhs and rhs for equality.
2) Compares lhs and rhs for equality.
3) Checks whether lhs is less than rhs.

Parameters

lhs, rhs - error codes to compare

Return value

1) true if the error category and error value compare equal.
2) true if the error category or error value compare are not equal.
3) true if lhs.category() < rhs.category(). Otherwise, true if lhs.category() == rhs.category() && lhs.value() < rhs.value(). Otherwise, false

Exceptions

noexcept specification:
noexcept

See also

 obtains the error_category for this error_code
(public member function)

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