.TH "std::pair< _T1, _T2 >" 3cxx "Sun Feb 7 2021" "libstdc++" \" -*- nroff -*-
.ad l
.nh
.SH NAME
std::pair< _T1, _T2 > \- Struct holding two objects of arbitrary type\&.  

.SH SYNOPSIS
.br
.PP
.PP
Inherits std::__pair_base< _U1, _U2 >\&.
.SS "Public Types"

.in +1c
.ti -1c
.RI "template<typename _U1 , typename _U2 > using \fB_PCCFP\fP = _PCC<!\fBis_same\fP< _T1, _U1 >::value||!\fBis_same\fP< _T2, _U2 >::value, _T1, _T2 >"
.br
.ti -1c
.RI "using \fB_PCCP\fP = _PCC< true, _T1, _T2 >"
.br
.ti -1c
.RI "typedef _T1 \fBfirst_type\fP"
.br
.ti -1c
.RI "typedef _T2 \fBsecond_type\fP"
.br
.RI "\fCfirst_type\fP is the first bound type "
.in -1c
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "template<typename _U1  = _T1, typename _U2  = _T2, typename enable_if< __and_< __is_implicitly_default_constructible< _U1 >, __is_implicitly_default_constructible< _U2 >> ::value, bool >::type  = true> constexpr \fBpair\fP ()"
.br
.RI "\fCsecond\fP is a copy of the second object "
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCP::template _MoveConstructiblePair< _U1, _U2 >() &&_PCCP::template _ImplicitlyMoveConvertiblePair< _U1, _U2 >(), bool >::type  = true> constexpr \fBpair\fP (_U1 &&__x, _U2 &&__y)"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCP::template _MoveConstructiblePair< _U1, _U2 >() &&!_PCCP::template _ImplicitlyMoveConvertiblePair< _U1, _U2 >(), bool >::type  = false> constexpr \fBpair\fP (_U1 &&__x, _U2 &&__y)"
.br
.ti -1c
.RI "template<typename _U1 , typename enable_if< _PCCP::template _MoveCopyPair< true, _U1, _T2 >(), bool >::type  = true> constexpr \fBpair\fP (_U1 &&__x, const _T2 &__y)"
.br
.ti -1c
.RI "template<typename _U1 , typename enable_if< _PCCP::template _MoveCopyPair< false, _U1, _T2 >(), bool >::type  = false> constexpr \fBpair\fP (_U1 &&__x, const _T2 &__y)"
.br
.ti -1c
.RI "template<typename _U1  = _T1, typename _U2  = _T2, typename enable_if< _PCCP::template _ConstructiblePair< _U1, _U2 >() &&_PCCP::template _ImplicitlyConvertiblePair< _U1, _U2 >(), bool >::type  = true> constexpr \fBpair\fP (const _T1 &__a, const _T2 &__b)"
.br
.ti -1c
.RI "template<typename _U1  = _T1, typename _U2  = _T2, typename enable_if< _PCCP::template _ConstructiblePair< _U1, _U2 >() &&!_PCCP::template _ImplicitlyConvertiblePair< _U1, _U2 >(), bool >::type  = false> constexpr \fBpair\fP (const _T1 &__a, const _T2 &__b)"
.br
.ti -1c
.RI "template<typename _U2 , typename enable_if< _PCCP::template _CopyMovePair< true, _T1, _U2 >(), bool >::type  = true> constexpr \fBpair\fP (const _T1 &__x, _U2 &&__y)"
.br
.ti -1c
.RI "template<typename _U2 , typename enable_if< _PCCP::template _CopyMovePair< false, _T1, _U2 >(), bool >::type  = false> \fBpair\fP (const _T1 &__x, _U2 &&__y)"
.br
.ti -1c
.RI "constexpr \fBpair\fP (const \fBpair\fP &)=default"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCFP< _U1, _U2 >::template _ConstructiblePair< _U1, _U2 >() &&_PCCFP< _U1, _U2 >::template _ImplicitlyConvertiblePair< _U1, _U2 >(), bool >::type  = true> constexpr \fBpair\fP (const \fBpair\fP< _U1, _U2 > &__p)"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCFP< _U1, _U2 >::template _ConstructiblePair< _U1, _U2 >() &&!_PCCFP< _U1, _U2 >::template _ImplicitlyConvertiblePair< _U1, _U2 >(), bool >::type  = false> constexpr \fBpair\fP (const \fBpair\fP< _U1, _U2 > &__p)"
.br
.ti -1c
.RI "constexpr \fBpair\fP (\fBpair\fP &&)=default"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCFP< _U1, _U2 >::template _MoveConstructiblePair< _U1, _U2 >() &&_PCCFP< _U1, _U2 >::template _ImplicitlyMoveConvertiblePair< _U1, _U2 >(), bool >::type  = true> constexpr \fBpair\fP (\fBpair\fP< _U1, _U2 > &&__p)"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 , typename enable_if< _PCCFP< _U1, _U2 >::template _MoveConstructiblePair< _U1, _U2 >() &&!_PCCFP< _U1, _U2 >::template _ImplicitlyMoveConvertiblePair< _U1, _U2 >(), bool >::type  = false> constexpr \fBpair\fP (\fBpair\fP< _U1, _U2 > &&__p)"
.br
.ti -1c
.RI "template<typename\&.\&.\&. _Args1, typename\&.\&.\&. _Args2> \fBpair\fP (\fBpiecewise_construct_t\fP, \fBtuple\fP< _Args1\&.\&.\&. >, \fBtuple\fP< _Args2\&.\&.\&. >)"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 > \fBenable_if\fP< __and_< \fBis_assignable\fP< _T1 &, const _U1 & >, \fBis_assignable\fP< _T2 &, const _U2 & > >::value, \fBpair\fP & >::type \fBoperator=\fP (const \fBpair\fP< _U1, _U2 > &__p)"
.br
.ti -1c
.RI "template<typename _U1 , typename _U2 > \fBenable_if\fP< __and_< \fBis_assignable\fP< _T1 &, _U1 && >, \fBis_assignable\fP< _T2 &, _U2 && > >::value, \fBpair\fP & >::type \fBoperator=\fP (\fBpair\fP< _U1, _U2 > &&__p)"
.br
.ti -1c
.RI "\fBpair\fP & \fBoperator=\fP (typename \fBconditional\fP< __and_< \fBis_copy_assignable\fP< _T1 >, \fBis_copy_assignable\fP< _T2 >>::value, const \fBpair\fP &, const __nonesuch_no_braces & >::type __p)"
.br
.ti -1c
.RI "\fBpair\fP & \fBoperator=\fP (typename \fBconditional\fP< __and_< \fBis_move_assignable\fP< _T1 >, \fBis_move_assignable\fP< _T2 >>::value, \fBpair\fP &&, __nonesuch_no_braces && >::type __p) noexcept(__and_< \fBis_nothrow_move_assignable\fP< _T1 >, \fBis_nothrow_move_assignable\fP< _T2 >>::value)"
.br
.ti -1c
.RI "void \fBswap\fP (\fBpair\fP &__p) noexcept(__and_< __is_nothrow_swappable< _T1 >, __is_nothrow_swappable< _T2 >>::value)"
.br
.in -1c
.SS "Public Attributes"

.in +1c
.ti -1c
.RI "_T1 \fBfirst\fP"
.br
.RI "\fCsecond_type\fP is the second bound type "
.ti -1c
.RI "_T2 \fBsecond\fP"
.br
.RI "\fCfirst\fP is a copy of the first object "
.in -1c
.SH "Detailed Description"
.PP 

.SS "template<typename _T1, typename _T2>
.br
struct std::pair< _T1, _T2 >"
Struct holding two objects of arbitrary type\&. 


.PP
\fBTemplate Parameters\fP
.RS 4
\fI_T1\fP Type of first object\&. 
.br
\fI_T2\fP Type of second object\&. 
.RE
.PP

.PP
Definition at line 208 of file stl_pair\&.h\&.
.SH "Member Typedef Documentation"
.PP 
.SS "template<typename _T1 , typename _T2 > template<typename _U1 , typename _U2 > using \fBstd::pair\fP< _T1, _T2 >::\fB_PCCFP\fP =  _PCC<!\fBis_same\fP<_T1, _U1>::value || !\fBis_same\fP<_T2, _U2>::value, _T1, _T2>"
There is also a templated copy ctor for the \fCpair\fP class itself\&. 
.PP
Definition at line 281 of file stl_pair\&.h\&.
.SS "template<typename _T1 , typename _T2 > using \fBstd::pair\fP< _T1, _T2 >::\fB_PCCP\fP =  _PCC<true, _T1, _T2>"
Two objects may be passed to a \fCpair\fP constructor to be copied\&. 
.PP
Definition at line 252 of file stl_pair\&.h\&.
.SS "template<typename _T1 , typename _T2 > typedef _T2 \fBstd::pair\fP< _T1, _T2 >::\fBsecond_type\fP"

.PP
\fCfirst_type\fP is the first bound type 
.PP
Definition at line 212 of file stl_pair\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "template<typename _T1 , typename _T2 > template<typename _U1  = _T1, typename _U2  = _T2, typename enable_if< __and_< __is_implicitly_default_constructible< _U1 >, __is_implicitly_default_constructible< _U2 >> ::value, bool >::type  = true> constexpr \fBstd::pair\fP< _T1, _T2 >::\fBpair\fP ()\fC [inline]\fP, \fC [constexpr]\fP"

.PP
\fCsecond\fP is a copy of the second object The default constructor creates \fCfirst\fP and \fCsecond\fP using their respective default constructors\&. 
.PP
Definition at line 229 of file stl_pair\&.h\&.
.SH "Member Data Documentation"
.PP 
.SS "template<typename _T1 , typename _T2 > _T1 \fBstd::pair\fP< _T1, _T2 >::first"

.PP
\fCsecond_type\fP is the second bound type 
.PP
Definition at line 214 of file stl_pair\&.h\&.
.PP
Referenced by __gnu_parallel::__find_template(), std::__sample(), __gnu_debug::__valid_range_aux(), std::set< _Key, _Compare, _Alloc >::insert(), std::operator<(), std::operator==(), and std::regex_replace()\&.
.SS "template<typename _T1 , typename _T2 > _T2 \fBstd::pair\fP< _T1, _T2 >::second"

.PP
\fCfirst\fP is a copy of the first object 
.PP
Definition at line 215 of file stl_pair\&.h\&.
.PP
Referenced by std::__sample(), __gnu_debug::__valid_range_aux(), std::set< _Key, _Compare, _Alloc >::insert(), std::regex_traits< _Ch_type >::lookup_classname(), std::operator<(), std::operator==(), and std::regex_replace()\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for libstdc++ from the source code\&.