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operator==,!=,<,<=,>,>=(std::unique_ptr)

提供: cppreference.com
< cpp‎ | memory‎ | unique ptr

 
 
ユーティリティライブラリ
支援を入力します (basic types, RTTI, type traits)
動的なメモリ管理
エラー処理
プログラムユーティリティ
可変個引数関数
日付と時刻
関数オブジェクト
initializer_list(C++11)
bitset
hash(C++11)
関係演算子
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
ペアとタプル
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
フォワード、スワップ、および移動
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Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
動的なメモリ管理
低レベルのメモリ管理
アロケータ
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Allocators
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allocator
allocator_traits(C++11)
allocator_arg_t(C++11)
allocator_arg(C++11)
uses_allocator(C++11)
scoped_allocator_adaptor(C++11)
ストレージを初期化されていない
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Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
スマートポインタ
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(廃止予定)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
ガベージコレクションをサポートしています
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Garbage collection support
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declare_reachable(C++11)
undeclare_reachable(C++11)
declare_no_pointers(C++11)
undeclare_no_pointers(C++11)
pointer_safety(C++11)
get_pointer_safety(C++11)
その他
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
Cライブラリ
Original:
C Library
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のstd :: unique_ptrに
メンバ関数
Original:
Member functions
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unique_ptr::unique_ptr
unique_ptr::~unique_ptr
unique_ptr::operator=
修飾子
Original:
Modifiers
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unique_ptr::release
unique_ptr::reset
unique_ptr::swap
オブザーバー
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Observers
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unique_ptr::get
unique_ptr::get_deleter
unique_ptr::operator bool
unique_ptr::operator*
unique_ptr::operator->
unique_ptr::operator[]
非メンバ関数
Original:
Non-member functions
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operator==
operator!=
operator<
operator>
operator<=
operator>
operator>=
std::swap
std::hash
 
template<class T1, class D1, class T2, class D2>
bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(1) (C + + 11以来)
template<class T1, class D1, class T2, class D2>
bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(2) (C + + 11以来)
template<class T1, class D1, class T2, class D2>
bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(3) (C + + 11以来)
template<class T1, class D1, class T2, class D2>
bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(4) (C + + 11以来)
template<class T1, class D1, class T2, class D2>
bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(5) (C + + 11以来)
template<class T1, class D1, class T2, class D2>
bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
(6) (C + + 11以来)
template <class T, class D>
bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept;
(7) (C + + 11以来)
template <class T, class D>
bool operator==(nullptr_t, const unique_ptr<T, D>& x) noexcept;
(8) (C + + 11以来)
template <class T, class D>
bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;
(9) (C + + 11以来)
template <class T, class D>
bool operator!=(nullptr_t, const unique_ptr<T, D>& x) noexcept;
(10) (C + + 11以来)
template <class T, class D>
bool operator<(const unique_ptr<T, D>& x, nullptr_t);
(11) (C + + 11以来)
template <class T, class D>
bool operator<(nullptr_t, const unique_ptr<T, D>& y);
(12) (C + + 11以来)
template <class T, class D>
bool operator<=(const unique_ptr<T, D>& x, nullptr_t);
(13) (C + + 11以来)
template <class T, class D>
bool operator<=(nullptr_t, const unique_ptr<T, D>& y);
(14) (C + + 11以来)
template <class T, class D>
bool operator>(const unique_ptr<T, D>& x, nullptr_t);
(15) (C + + 11以来)
template <class T, class D>
bool operator>(nullptr_t, const unique_ptr<T, D>& y);
(16) (C + + 11以来)
template <class T, class D>
bool operator>=(const unique_ptr<T, D>& x, nullptr_t);
(17) (C + + 11以来)
template <class T, class D>
bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
(18) (C + + 11以来)
2unique_ptrs、またはunique_ptrnullptrのポインタ値を比較.
Original:
Compares the pointer values of two unique_ptrs, or a unique_ptr and nullptr.
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目次

[編集] パラメータ

x, y -
比較するunique_ptrs
Original:
unique_ptrs to compare
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[編集] 値を返します

1) x.get() == y.get()

2) x.get() != y.get()

3)
std::less<CT>()(x.get(), y.get())、どこCTstd::common_type<unique_ptr<T1, D1>::pointer, unique_ptr<T2, D2>::pointer>::typeです
Original:
std::less<CT>()(x.get(), y.get()), where CT is std::common_type<unique_ptr<T1, D1>::pointer, unique_ptr<T2, D2>::pointer>::type
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4) !(y < x)

5) y < x

6) !(x < y)

7-8) !x

9-10) (bool)x

11) std::less<unique_ptr<T,D>::pointer>()(x.get(), nullptr)

12) std::less<unique_ptr<T,D>::pointer>()(nullptr, y.get())

13) nullptr < x

14) y < nullptr

15) !(nullptr < x)

16) !(y < nullptr)

17) !(x < nullptr)

18) !(nullptr < y)

[編集]

#include <iostream>
#include <memory>
 
int main() 
{
    std::unique_ptr<int> p1(new int(42));
    std::unique_ptr<int> p2(new int(42));
 
    std::cout << "p1 == p1: " << (p1 == p1) << '\n';
 
    // p1 and p2 point to different memory locations, so p1 != p2
    std::cout << "p1 == p2: " << (p1 == p2) << '\n';
}

Output:

p1 == p1: 1
p1 == p2: 0

[編集] も参照してください

管理対象オブジェクトへのポインタを返します
Original:
returns a pointer to the managed object
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(パブリックメンバ関数) [edit]