bslstl_pair.h File Reference

Provide a simple struct with two members that may use allocators. More...

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Classes
struct	bsl::Pair_BslmaIdiom< TYPE >
struct	bsl::Pair_ImpUtil
struct	bsl::Pair_First< TYPE >
struct	bsl::Pair_First< TYPE & >
struct	bsl::Pair_Second< TYPE >
struct	bsl::Pair_Second< TYPE & >
class	bsl::pair< T1, T2 >
Namespaces
namespace	std
namespace	bslstl
namespace	bsl
Defines
#define	BSLSTL_PAIR_NO_IMPLICIT_DELETED_FOR_MOVE_OPS   1
#define	BSLSTL_PAIR_DO_NOT_DEFAULT_THE_DEFAULT_CONSTRUCTOR   1
#define	BSLSTL_PAIR_DO_NOT_SFINAE_TEST_IS_SWAPPABLE   1
Typedefs
typedef bsl::integral_constant < int, 0 >	bsl::Pair_BslmaIdiomNone
typedef bsl::integral_constant < int, 1 >	bsl::Pair_BslmaIdiomAtEnd
typedef bsl::integral_constant < int, 2 >	bsl::Pair_BslmaIdiomAllocatorArgT
Functions
template<class TYPE >
void	std::swap (TYPE &a, TYPE &b)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator== (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator!= (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator< (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator> (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator<= (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
BSLS_KEYWORD_CONSTEXPR bool	bsl::operator>= (const pair< T1, T2 > &lhs, const pair< T1, T2 > &rhs)
template<class T1 , class T2 >
void	bsl::swap (pair< T1, T2 > &a, pair< T1, T2 > &b) BSLS_KEYWORD_NOEXCEPT_SPECIFICATION(BSLS_KEYWORD_NOEXCEPT_OPERATOR(a.swap(b)))
template<class HASHALG , class T1 , class T2 >
void	bsl::hashAppend (HASHALG &hashAlg, const pair< T1, T2 > &input)

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Detailed Description

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Define Documentation

#define BSLSTL_PAIR_NO_IMPLICIT_DELETED_FOR_MOVE_OPS   1

In order to support the correct signature for copy constructor/assignment operators of members with non-'const' references for those operations, we must take the implicitly generated declarations. However, the specification for assignment through references requires defining the assignment operator in those cases, and that will delete any (otherwise) implicitly-declared constructors, so they must be explicitly defaulted on platforms that support them. However, Visual C++ 2013 refused to recognize these defaults as valid for move constructors, so a special exception must be made in this case. MSVC 2013 implicitly declared and defines a default constructor, even for members that are not default constructible such as references.

#define BSLSTL_PAIR_DO_NOT_DEFAULT_THE_DEFAULT_CONSTRUCTOR   1

When compiling without decltype support, bsl::is_swappable is not defined. In this case we must fall back on the previous, pre-C++17 implementation which simply assumes swappability.

#define BSLSTL_PAIR_DO_NOT_SFINAE_TEST_IS_SWAPPABLE   1