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Difference between revisions of "cpp/container/queue/operator cmp"

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< cpp‎ | container‎ | queue
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Latest revision as of 03:21, 4 November 2023

[edit template]
 
C++
 
Containers library
 
std::queue
 
template< class T, class Container >

bool operator==( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (1)
template< class T, class Container >

bool operator!=( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (2)
template< class T, class Container >

bool operator< ( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (3)
template< class T, class Container >

bool operator<=( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (4)
template< class T, class Container >

bool operator> ( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (5)
template< class T, class Container >

bool operator>=( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (6)
template< class T, std::three_way_comparable Container >

std::compare_three_way_result_t<Container>
    operator<=>( const std::queue<T, Container>& lhs,

                 const std::queue<T, Container>& rhs );
 (7) (since C++20)

Compares the contents of the underlying containers of two container adaptors. The comparison is done by applying the corresponding operator to the underlying containers.

Contents

[edit] Parameters

lhs, rhs - container adaptors whose contents to compare
-
T must meet the requirements of EqualityComparable.

[edit] Return value

1-6) true if the corresponding comparison yields true, false otherwise.
7) Result of three-way comparison on underlying containers.

[edit] Complexity

Linear in the size of the container.

[edit] Example

This section is incomplete
Reason: no example

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 410 C++98 the semantics of operators !=, >, <= and >= were missing added
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