operator==,!=,<,<=,>,>=,<=>(std::stack)
Min standard notice:
Compares the contents of the underlying containers of two container adaptors. The comparison is done by applying the corresponding operator to the underlying containers.
# Declarations
template< class T, class Container >
bool operator==( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, class Container >
bool operator!=( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, class Container >
bool operator< ( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, class Container >
bool operator<=( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, class Container >
bool operator> ( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, class Container >
bool operator>=( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
template< class T, std::three_way_comparable Container >
std::compare_three_way_result_t<Container>
operator<=>( const std::stack<T, Container>& lhs,
const std::stack<T, Container>& rhs );
(since C++20)
# Parameters
lhs, rhs: container adaptors whose contents to compare
# Example
This section is incompleteReason: no example
# Defect reports
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 410 | C++98 | the semantics of all comparison operators were missing | added |