std::weak_ptr man page

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

Synopsis

Inherits std::__weak_ptr< _Tp, _Lp >.

Public Types

typedef _Tp element_type

Public Member Functions

template<typename _Tp1 , typename = _Convertible<_Tp1*>> weak_ptr (const shared_ptr< _Tp1 > &__r) noexcept

weak_ptr (const weak_ptr &) noexcept=default

template<typename _Tp1 , typename = _Convertible<_Tp1*>> weak_ptr (const weak_ptr< _Tp1 > &__r) noexcept

weak_ptr (weak_ptr &&) noexcept=default

template<typename _Tp1 , typename = _Convertible<_Tp1*>> weak_ptr (weak_ptr< _Tp1 > &&__r) noexcept

bool expired () const noexcept

shared_ptr< _Tp > lock () const noexcept

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

template<typename _Tp1 > weak_ptr & operator= (const weak_ptr< _Tp1 > &__r) noexcept

template<typename _Tp1 > weak_ptr & operator= (const shared_ptr< _Tp1 > &__r) noexcept

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

template<typename _Tp1 > weak_ptr & operator= (weak_ptr< _Tp1 > &&__r) noexcept

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

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

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 470 of file bits/shared_ptr.h.

Author

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Info

Fri Sep 16 2016 libstdc++