std::operator==,!=,<,<=>(std::error_code) - cppreference.com (original) (raw)
| Defined in header <system_error> | ||
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| bool operator==( const std::error_code& lhs, const std::error_code& rhs ) noexcept; | (1) | (since C++11) |
| bool operator!=( const std::error_code& lhs, const std::error_code& rhs ) noexcept; | (2) | (since C++11) (until C++20) |
| bool operator<( const std::error_code& lhs, const std::error_code& rhs ) noexcept; | (3) | (since C++11) (until C++20) |
| std::strong_ordering operator<=>( const std::error_code& lhs, const std::error_code& rhs ) noexcept; | (4) | (since C++20) |
Compares two error code objects.
Compares lhs and rhs for equality.
Compares lhs and rhs for equality.
Checks whether lhs is less than rhs.
Obtains three-way comparison result of lhs and rhs.
| The <, <=, >, >=, and != operators are synthesized from operator<=> and operator== respectively. | (since C++20) |
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[edit] Parameters
| lhs, rhs | - | error codes to compare |
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[edit] Return value
true if the error category and error value compare equal.
true if the error category or error value compare are not equal.
true if lhs.category() < rhs.category(). Otherwise, true if lhs.category() == rhs.category() && lhs.value() < rhs.value(). Otherwise, false.
lhs.category() <=> rhs.category() if it is not std::strong_ordering::equal. Otherwise, lhs.value() <=> rhs.value().