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std::unique_ptr< _Tp, _Dp >(3cxx) std::unique_ptr< _Tp, _Dp >(3cxx)

NAME

std::unique_ptr< _Tp, _Dp > - 20.7.1.2 unique_ptr for single objects.

SYNOPSIS

Public Types


using deleter_type = _Dp
using element_type = _Tp
using pointer = typename __uniq_ptr_impl< _Tp, _Dp >::pointer

Public Member Functions


template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> constexpr unique_ptr () noexcept
Default constructor, creates a unique_ptr that owns nothing. template<typename _Up , typename > unique_ptr (auto_ptr< _Up > &&__u) noexcept
unique_ptr (const unique_ptr &)=delete
template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> constexpr unique_ptr (nullptr_t) noexcept
Creates a unique_ptr that owns nothing. template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> unique_ptr (pointer __p) noexcept
template<typename _Del = deleter_type, typename = _Require<is_move_constructible<_Del>>> unique_ptr (pointer __p, __enable_if_t<!is_lvalue_reference< _Del >::value, _Del && > __d) noexcept
template<typename _Del = deleter_type, typename = _Require<is_copy_constructible<_Del>>> unique_ptr (pointer __p, const deleter_type &__d) noexcept
template<typename _Del = deleter_type, typename _DelUnref = typename remove_reference<_Del>::type> unique_ptr (pointer, __enable_if_t< is_lvalue_reference< _Del >::value, _DelUnref && >)=delete
unique_ptr (unique_ptr &&)=default
Move constructor. template<typename _Up , typename _Ep , typename = _Require< __safe_conversion_up<_Up, _Ep>, typename conditional<is_reference<_Dp>::value, is_same<_Ep, _Dp>, is_convertible<_Ep, _Dp>>::type>> unique_ptr (unique_ptr< _Up, _Ep > &&__u) noexcept
Converting constructor from another type. ~unique_ptr () noexcept
Destructor, invokes the deleter if the stored pointer is not null. pointer get () const noexcept
Return the stored pointer. const deleter_type & get_deleter () const noexcept
Return a reference to the stored deleter. deleter_type & get_deleter () noexcept
Return a reference to the stored deleter. operator bool () const noexcept
Return true if the stored pointer is not null. add_lvalue_reference< element_type >::type operator* () const
Dereference the stored pointer. pointer operator-> () const noexcept
Return the stored pointer. unique_ptr & operator= (const unique_ptr &)=delete
unique_ptr & operator= (nullptr_t) noexcept
Reset the unique_ptr to empty, invoking the deleter if necessary. unique_ptr & operator= (unique_ptr &&)=default
Move assignment operator. template<typename _Up , typename _Ep > enable_if< __and_< __safe_conversion_up< _Up, _Ep >, is_assignable< deleter_type &, _Ep && > >::value, unique_ptr & >::type operator= (unique_ptr< _Up, _Ep > &&__u) noexcept
Assignment from another type. pointer release () noexcept
Release ownership of any stored pointer. void reset (pointer __p=pointer()) noexcept
Replace the stored pointer. void swap (unique_ptr &__u) noexcept
Exchange the pointer and deleter with another object.

(Note that these are not member functions.)



template<typename _Tp , typename _Dp > enable_if< __is_swappable< _Dp >::value >::type swap (unique_ptr< _Tp, _Dp > &__x, unique_ptr< _Tp, _Dp > &__y) noexcept
template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator== (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Equality operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator== (const unique_ptr< _Tp, _Dp > &__x, nullptr_t) noexcept
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator== (nullptr_t, const unique_ptr< _Tp, _Dp > &__x) noexcept
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator!= (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Inequality operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator!= (const unique_ptr< _Tp, _Dp > &__x, nullptr_t) noexcept
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator!= (nullptr_t, const unique_ptr< _Tp, _Dp > &__x) noexcept
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator< (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Relational operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator< (const unique_ptr< _Tp, _Dp > &__x, nullptr_t)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator< (nullptr_t, const unique_ptr< _Tp, _Dp > &__x)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator<= (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Relational operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator<= (const unique_ptr< _Tp, _Dp > &__x, nullptr_t)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator<= (nullptr_t, const unique_ptr< _Tp, _Dp > &__x)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator> (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Relational operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator> (const unique_ptr< _Tp, _Dp > &__x, nullptr_t)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator> (nullptr_t, const unique_ptr< _Tp, _Dp > &__x)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp , typename _Up , typename _Ep > bool operator>= (const unique_ptr< _Tp, _Dp > &__x, const unique_ptr< _Up, _Ep > &__y)
Relational operator for unique_ptr objects, compares the owned pointers. template<typename _Tp , typename _Dp > bool operator>= (const unique_ptr< _Tp, _Dp > &__x, nullptr_t)
unique_ptr comparison with nullptr template<typename _Tp , typename _Dp > bool operator>= (nullptr_t, const unique_ptr< _Tp, _Dp > &__x)
unique_ptr comparison with nullptr



template<typename _Tp , typename... _Args> _MakeUniq< _Tp >::__single_object make_unique (_Args &&... __args)
std::make_unique for single objects template<typename _Tp > _MakeUniq< _Tp >::__array make_unique (size_t __num)
std::make_unique for arrays of unknown bound template<typename _Tp , typename... _Args> _MakeUniq< _Tp >::__invalid_type make_unique (_Args &&...)=delete
Disable std::make_unique for arrays of known bound.

Detailed Description

template<typename _Tp, typename _Dp = default_delete<_Tp>>

class std::unique_ptr< _Tp, _Dp >" 20.7.1.2 unique_ptr for single objects.

Definition at line 242 of file unique_ptr.h.

Constructor & Destructor Documentation

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> constexpr std::unique_ptr< _Tp, _Dp >::unique_ptr () [inline], [constexpr], [noexcept]

Default constructor, creates a unique_ptr that owns nothing.

Definition at line 269 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> std::unique_ptr< _Tp, _Dp >::unique_ptr (pointer __p) [inline], [explicit], [noexcept]

Takes ownership of a pointer.

Parameters

__p A pointer to an object of element_type

The deleter will be value-initialized.

Definition at line 281 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Del = deleter_type, typename = _Require<is_copy_constructible<_Del>>> std::unique_ptr< _Tp, _Dp >::unique_ptr (pointer __p, const deleter_type & __d) [inline], [noexcept]

Takes ownership of a pointer.

Parameters

__p A pointer to an object of element_type
__d A reference to a deleter.

The deleter will be initialized with __d

Definition at line 294 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Del = deleter_type, typename = _Require<is_move_constructible<_Del>>> std::unique_ptr< _Tp, _Dp >::unique_ptr (pointer __p, __enable_if_t<!is_lvalue_reference< _Del >::value, _Del && > __d) [inline], [noexcept]

Takes ownership of a pointer.

Parameters

__p A pointer to an object of element_type
__d An rvalue reference to a (non-reference) deleter.

The deleter will be initialized with std::move(__d)

Definition at line 306 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Del = _Dp, typename = _DeleterConstraint<_Del>> constexpr std::unique_ptr< _Tp, _Dp >::unique_ptr (nullptr_t) [inline], [constexpr], [noexcept]

Creates a unique_ptr that owns nothing.

Definition at line 320 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> std::unique_ptr< _Tp, _Dp >::unique_ptr (unique_ptr< _Tp, _Dp > &&) [default]

Move constructor.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Up , typename _Ep , typename = _Require< __safe_conversion_up<_Up, _Ep>, typename conditional<is_reference<_Dp>::value, is_same<_Ep, _Dp>, is_convertible<_Ep, _Dp>>::type>> std::unique_ptr< _Tp, _Dp >::unique_ptr (unique_ptr< _Up, _Ep > && __u) [inline], [noexcept]

Converting constructor from another type. Requires that the pointer owned by __u is convertible to the type of pointer owned by this object, __u does not own an array, and __u has a compatible deleter type.

Definition at line 340 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> std::unique_ptr< _Tp, _Dp >::~unique_ptr () [inline], [noexcept]

Destructor, invokes the deleter if the stored pointer is not null.

Definition at line 355 of file unique_ptr.h.

References std::unique_ptr< _Tp, _Dp >::get_deleter(), and std::move().

Member Function Documentation

template<typename _Tp , typename _Dp = default_delete<_Tp>> pointer std::unique_ptr< _Tp, _Dp >::get (void) const [inline], [noexcept]

Return the stored pointer.

Definition at line 421 of file unique_ptr.h.

Referenced by std::unique_ptr< _Tp, _Dp >::operator bool(), std::unique_ptr< _Tp[], _Dp >::operator bool(), std::unique_ptr< _Tp, _Dp >::operator!=(), std::unique_ptr< _Tp, _Dp >::operator==(), and std::unique_ptr< _Tp, _Dp >::operator>().

template<typename _Tp , typename _Dp = default_delete<_Tp>> const deleter_type& std::unique_ptr< _Tp, _Dp >::get_deleter () const [inline], [noexcept]

Return a reference to the stored deleter.

Definition at line 431 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> deleter_type& std::unique_ptr< _Tp, _Dp >::get_deleter () [inline], [noexcept]

Return a reference to the stored deleter.

Definition at line 426 of file unique_ptr.h.

Referenced by std::unique_ptr< _Tp[], _Dp >::~unique_ptr(), std::unique_ptr< _Tp, _Dp >::~unique_ptr(), std::unique_ptr< _Tp, _Dp >::operator=(), and std::unique_ptr< _Tp[], _Dp >::operator=().

template<typename _Tp , typename _Dp = default_delete<_Tp>> std::unique_ptr< _Tp, _Dp >::operator bool () const [inline], [explicit], [noexcept]

Return true if the stored pointer is not null.

Definition at line 435 of file unique_ptr.h.

References std::unique_ptr< _Tp, _Dp >::get().

template<typename _Tp , typename _Dp = default_delete<_Tp>> add_lvalue_reference<element_type>::type std::unique_ptr< _Tp, _Dp >::operator* () const [inline]

Dereference the stored pointer.

Definition at line 405 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> pointer std::unique_ptr< _Tp, _Dp >::operator-> () const [inline], [noexcept]

Return the stored pointer.

Definition at line 413 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> unique_ptr& std::unique_ptr< _Tp, _Dp >::operator= (nullptr_t) [inline], [noexcept]

Reset the unique_ptr to empty, invoking the deleter if necessary.

Definition at line 395 of file unique_ptr.h.

References std::unique_ptr< _Tp, _Dp >::reset().

template<typename _Tp , typename _Dp = default_delete<_Tp>> unique_ptr& std::unique_ptr< _Tp, _Dp >::operator= (unique_ptr< _Tp, _Dp > &&) [default]

Move assignment operator. Invokes the deleter if this object owns a pointer.

template<typename _Tp , typename _Dp = default_delete<_Tp>> template<typename _Up , typename _Ep > enable_if< __and_< __safe_conversion_up<_Up, _Ep>, is_assignable<deleter_type&, _Ep&&> >::value, unique_ptr&>::type std::unique_ptr< _Tp, _Dp >::operator= (unique_ptr< _Up, _Ep > && __u) [inline], [noexcept]

Assignment from another type.

Parameters

__u The object to transfer ownership from, which owns a convertible pointer to a non-array object.

Invokes the deleter if this object owns a pointer.

Definition at line 386 of file unique_ptr.h.

References std::unique_ptr< _Tp, _Dp >::get_deleter(), and std::unique_ptr< _Tp, _Dp >::reset().

template<typename _Tp , typename _Dp = default_delete<_Tp>> pointer std::unique_ptr< _Tp, _Dp >::release () [inline], [noexcept]

Release ownership of any stored pointer.

Definition at line 442 of file unique_ptr.h.

template<typename _Tp , typename _Dp = default_delete<_Tp>> void std::unique_ptr< _Tp, _Dp >::reset (pointer __p = pointer()) [inline], [noexcept]

Replace the stored pointer.

Parameters

__p The new pointer to store.

The deleter will be invoked if a pointer is already owned.

Definition at line 452 of file unique_ptr.h.

References std::move().

Referenced by std::unique_ptr< _Tp, _Dp >::operator=(), and std::unique_ptr< _Tp[], _Dp >::operator=().

template<typename _Tp , typename _Dp = default_delete<_Tp>> void std::unique_ptr< _Tp, _Dp >::swap (unique_ptr< _Tp, _Dp > & __u) [inline], [noexcept]

Exchange the pointer and deleter with another object.

Definition at line 461 of file unique_ptr.h.

Author

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Sun Sep 19 2021 libstdc++