std::weak_ptr< _Tp > Class Template Reference
Utilities » Memory » Pointer Abstractions

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 536 of file bits/shared_ptr.h.

The documentation for this class was generated from the following file:

- bits/shared_ptr.h