std::weak_ptr< _Tp >

Section: C Library Functions (3)
Updated: Wed Apr 17 2019
Page Index

NAME

std::weak_ptr< _Tp > - A smart pointer with weak semantics.

SYNOPSIS

Inherits std::__weak_ptr< _Tp, _Lp >.

Public Types

using element_type = typename remove_extent< _Tp >::type

Public Member Functions

template<typename _Yp , typename = _Constructible<const shared_ptr<_Yp>&>> weak_ptr (const shared_ptr< _Yp > &__r) noexcept

weak_ptr (const weak_ptr &) noexcept=default

template<typename _Yp , typename = _Constructible<const weak_ptr<_Yp>&>> weak_ptr (const weak_ptr< _Yp > &__r) noexcept

weak_ptr (weak_ptr &&) noexcept=default

template<typename _Yp , typename = _Constructible<weak_ptr<_Yp>>> weak_ptr (weak_ptr< _Yp > &&__r) noexcept

bool expired () const noexcept

shared_ptr< _Tp > lock () const noexcept

weak_ptr & operator= (const weak_ptr &__r) noexcept=default

template<typename _Yp > _Assignable< const weak_ptr< _Yp > & > operator= (const weak_ptr< _Yp > &__r) noexcept

template<typename _Yp > _Assignable< const shared_ptr< _Yp > & > operator= (const shared_ptr< _Yp > &__r) noexcept

weak_ptr & operator= (weak_ptr &&__r) noexcept=default

template<typename _Yp > _Assignable< weak_ptr< _Yp > > operator= (weak_ptr< _Yp > &&__r) noexcept

template<typename _Tp1 > bool owner_before (const __shared_ptr< _Tp1, _Lp > &__rhs) const noexcept

template<typename _Tp1 > bool owner_before (const __weak_ptr< _Tp1, _Lp > &__rhs) const noexcept

void reset () noexcept

void swap (__weak_ptr &__s) noexcept

long use_count () const noexcept

Detailed Description

template<typename _Tp>

class std::weak_ptr< _Tp >" A smart pointer with weak semantics.

With forwarding constructors and assignment operators.

Definition at line 535 of file bits/shared_ptr.h.

Author

Generated automatically by Doxygen for libstdc++ from the source code.