std::error_category::operator==,!=,<

 

C++

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Technical Specifications

 

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rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
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strong_order weak_order partial_order strong_equal weak_equal	strong_ordering weak_ordering partial_ordering strong_equality weak_equality	is_eqis_neqis_ltis_lteqis_gtis_gteq
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Error handling

Exception handling exception uncaught_exceptionuncaught_exceptions (until C++20)(C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate bad_exception unexpected (until C++17) unexpected_handler (until C++17) get_unexpected (C++11)(until C++17) set_unexpected (until C++17) Contracts contract_violation (C++20)

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std::error_category

Member functions

error_category::error_category

error_category::~error_category

error_category::name

error_category::default_error_condition

error_category::equivalent

error_category::message

error_category::operator==error_category::operator!=error_category::operator<

 

bool operator==( const error_category& rhs ) const noexcept;	(1)	(since C++11)
bool operator!=( const error_category& rhs ) const noexcept;	(2)	(since C++11)
bool operator<( const error_category& rhs ) const noexcept;	(3)	(since C++11)

Compares to another error category.

1) Checks whether *this and rhs refer to the same object.

2) Checks whether *this and rhs do not refer to the same object.

3) Orders *this and rhs by the order of this and &rhs. Equivalent to std::less<const error_category*>()(this, &rhs).

Parameters

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

Return value

1) true if *this and rhs refer to the same object, false otherwise.

2) true if *this and rhs do not refer to the same object, false otherwise.

3) true if *this is less than rhs as defined by the order of this and &rhs.