.TH "std::weak_ptr< _Tp >" 3cxx "libstdc++" \" -*- nroff -*-
.ad l
.nh
.SH NAME
std::weak_ptr< _Tp > \- A smart pointer with weak semantics\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <shared_ptr\&.h>\fP
.PP
Inherits std::__weak_ptr< _Tp, _Lp >\&.
.SS "Public Types"

.in +1c
.ti -1c
.RI "\fBusing\fP \fBelement_type\fP = \fBtypename\fP \fBremove_extent\fP< _Tp >::type"
.br
.in -1c
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<const shared_ptr<_Yp>&>> \fBweak_ptr\fP (\fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > &__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBweak_ptr\fP (\fBconst\fP \fBweak_ptr\fP &) \fBnoexcept\fP=\fBdefault\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<const weak_ptr<_Yp>&>> \fBweak_ptr\fP (\fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > &__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBweak_ptr\fP (\fBweak_ptr\fP &&) \fBnoexcept\fP=\fBdefault\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<weak_ptr<_Yp>>> \fBweak_ptr\fP (\fBweak_ptr\fP< \fB_Yp\fP > &&__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "bool \fBexpired\fP () \fBconst\fP \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBshared_ptr\fP< _Tp > \fBlock\fP () \fBconst\fP \fBnoexcept\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > & > \fBoperator=\fP (\fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > &__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBweak_ptr\fP & \fBoperator=\fP (\fBconst\fP \fBweak_ptr\fP &__r) \fBnoexcept\fP=\fBdefault\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > & > \fBoperator=\fP (\fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > &__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBweak_ptr\fP & \fBoperator=\fP (\fBweak_ptr\fP &&__r) \fBnoexcept\fP=\fBdefault\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBweak_ptr\fP< \fB_Yp\fP > > \fBoperator=\fP (\fBweak_ptr\fP< \fB_Yp\fP > &&__r) \fBnoexcept\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Tp1\fP > bool \fBowner_before\fP (\fBconst\fP __shared_ptr< \fB_Tp1\fP, \fB_Lp\fP > &\fB__rhs\fP) \fBconst\fP \fBnoexcept\fP"
.br
.ti -1c
.RI "template<\fBtypename\fP \fB_Tp1\fP > bool \fBowner_before\fP (\fBconst\fP __weak_ptr< \fB_Tp1\fP, \fB_Lp\fP > &\fB__rhs\fP) \fBconst\fP \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBvoid\fP \fBreset\fP () \fBnoexcept\fP"
.br
.ti -1c
.RI "\fBvoid\fP \fBswap\fP (__weak_ptr &\fB__s\fP) \fBnoexcept\fP"
.br
.ti -1c
.RI "long \fBuse_count\fP () \fBconst\fP \fBnoexcept\fP"
.br
.in -1c
.SH "Detailed Description"
.PP 

.SS "template<\fBtypename\fP _Tp>
.br
class std::weak_ptr< _Tp >"A smart pointer with weak semantics\&. 

With forwarding constructors and assignment operators\&. 
.PP
Definition at line \fB531\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SH "Member Typedef Documentation"
.PP 
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> \fBusing\fP std::__weak_ptr< _Tp, \fB_Lp\fP >::element_type =  \fBtypename\fP \fBremove_extent\fP<_Tp>::type\fC [inherited]\fP"

.PP
Definition at line \fB1588\fP of file \fBshared_ptr_base\&.h\fP\&.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<const shared_ptr<_Yp>&>> \fBstd::weak_ptr\fP< _Tp >::weak_ptr (\fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > & __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB548\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<const weak_ptr<_Yp>&>> \fBstd::weak_ptr\fP< _Tp >::weak_ptr (\fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > & __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB554\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP , \fBtypename\fP  = _Constructible<weak_ptr<_Yp>>> \fBstd::weak_ptr\fP< _Tp >::weak_ptr (\fBweak_ptr\fP< \fB_Yp\fP > && __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB560\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SH "Member Function Documentation"
.PP 
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> bool std::__weak_ptr< _Tp, \fB_Lp\fP >::expired () const\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1680\fP of file \fBshared_ptr_base\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > \fBshared_ptr\fP< _Tp > \fBstd::weak_ptr\fP< _Tp >::lock () const\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB594\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > & > \fBstd::weak_ptr\fP< _Tp >::operator= (\fBconst\fP \fBshared_ptr\fP< \fB_Yp\fP > & __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB576\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > & > \fBstd::weak_ptr\fP< _Tp >::operator= (\fBconst\fP \fBweak_ptr\fP< \fB_Yp\fP > & __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB568\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp > template<\fBtypename\fP \fB_Yp\fP > _Assignable< \fBweak_ptr\fP< \fB_Yp\fP > > \fBstd::weak_ptr\fP< _Tp >::operator= (\fBweak_ptr\fP< \fB_Yp\fP > && __r)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Definition at line \fB587\fP of file \fBbits/shared_ptr\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> template<\fBtypename\fP \fB_Tp1\fP > bool std::__weak_ptr< _Tp, \fB_Lp\fP >::owner_before (\fBconst\fP __shared_ptr< \fB_Tp1\fP, \fB_Lp\fP > & __rhs) const\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1685\fP of file \fBshared_ptr_base\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> template<\fBtypename\fP \fB_Tp1\fP > bool std::__weak_ptr< _Tp, \fB_Lp\fP >::owner_before (\fBconst\fP __weak_ptr< \fB_Tp1\fP, \fB_Lp\fP > & __rhs) const\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1690\fP of file \fBshared_ptr_base\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> \fBvoid\fP std::__weak_ptr< _Tp, \fB_Lp\fP >::reset ()\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1694\fP of file \fBshared_ptr_base\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> \fBvoid\fP std::__weak_ptr< _Tp, \fB_Lp\fP >::swap (__weak_ptr< _Tp, \fB_Lp\fP > & __s)\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1698\fP of file \fBshared_ptr_base\&.h\fP\&.
.SS "template<\fBtypename\fP _Tp , _Lock_policy _Lp> long std::__weak_ptr< _Tp, \fB_Lp\fP >::use_count () const\fC [inline]\fP, \fC [noexcept]\fP, \fC [inherited]\fP"

.PP
Definition at line \fB1676\fP of file \fBshared_ptr_base\&.h\fP\&.

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