std::operator==,!=,<,<=>(std::error_code)
Defined in header <system_error> |
||
|---|---|---|
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.
1) Compares
lhs and
rhs for equality.
2) Compares
lhs and
rhs for equality.
3) Checks whether
lhs is less than
rhs.
4) Obtains three-way comparison result of
lhs and
rhs.
| The |
(since C++20) |
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.
4)
lhs.category() <=> rhs.category() if it is not
std::strong_ordering::equal. Otherwise,
lhs.value() <=> rhs.value().
See also
| obtains the error_category for this error_code (public member function) |
|
| obtains the value of the error_code (public member function) |
|
|
(removed in C++20)(removed in C++20)(C++20)
|
compares error_conditions and error_codes (function) |
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