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std::move

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< cpp‎ | algorithm

 
 
アルゴリズムライブラリ
機能します
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Functions
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シーケンス動作を非改変
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Non-modifying sequence operations
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シーケンス動作を変更する
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Modifying sequence operations
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操作を仕切る
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Partitioning operations
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(ソートされた範囲で)ソート操作
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Sorting operations (on sorted ranges)
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バイナリ検索操作(ソート範囲で)
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Binary search operations (on sorted ranges)
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(ソートされた範囲で)操作を設定します
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Set operations (on sorted ranges)
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ヒープ操作
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Heap operations
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最小値/最大値操作
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Minimum/maximum operations
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数値演算
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Numeric operations
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Cライブラリ
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C library
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Defined in header <algorithm>
template< class InputIt, class OutputIt >
OutputIt move( InputIt first, InputIt last, OutputIt d_first );
(C++11およびそれ以降)
[first, last)で別の範囲の先頭に、範囲d_first内の要素を移動します。この操作の後に移動し、範囲内の要素は、依然として適切な型の有効な値が含まれていますが、移動前と同じ値であるとは限らないでしょう.
Original:
Moves the elements in the range [first, last), to another range beginning at d_first. After this operation the elements in the moved-from range will still contain valid values of the appropriate type, but not necessarily the same values as before the move.
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目次

[編集] パラメータ

first, last -
移動する要素の範囲
Original:
the range of elements to move
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d_first -
目的の範囲の始まり。 d_first[first, last)内であれば、std::move_backwardNJのstd ::移動</ span>をの代わりに使用する必要があります.
Original:
the beginning of the destination range. If d_first is within [first, last), std::move_backward must be used instead of NJのstd ::移動</ span>を. </div>
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</div></div></div></div>
Type requirements
-
InputIt must meet the requirements of InputIterator.
-
OutputIt must meet the requirements of OutputIterator.

[編集] 値を返します

最後の要素は、過去の要素への出力イテレータは(d_first + (last - first))移動しました
Original:
Output iterator to the element past the last element moved (d_first + (last - first))
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[編集] 複雑

まさにlast - first割り当てを移動.
Original:
Exactly last - first move assignments.
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[編集] 可能な実装

template<class InputIt, class OutputIt>
OutputIt move(InputIt first, InputIt last, 
                    OutputIt d_first)
{
    while (first != last) {
        *d_first++ = std::move(*first++);
    }
    return d_first;
}

[編集]

次のコードは、別のコンテナからスレッドオブジェクトを(それ自体がコピーではない)に移動します</ p>

Original:
<p>The following code moves thread objects (which themselves are not copyable) from one container to another.</p>
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</div>

#include <iostream>
#include <vector>
#include <list>
#include <iterator>
#include <thread>
#include <chrono>

void f(int n)
{
    std::this_thread::sleep_for(std::chrono::seconds(n));
    std::cout << "thread " << n << " ended" << '\n';
}

int main()
{
    std::vector<std::thread> v;
    v.emplace_back(f, 1);
    v.emplace_back(f, 2);
    v.emplace_back(f, 3);
    std::list<std::thread> l;
    // copy() would not compile, because std::thread is noncopyable
のstd ::移動</ span>を(v.begin(), v.end(), std::back_inserter(l));
    for(auto& t : l) t.join();
}
</div>

出力:
Original:
Output:
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thread 1 ended
thread 2 ended
thread 3 ended

[編集] も参照してください

下位の順序で新しい場所に要素の範囲を移動します
Original:
moves a range of elements to a new location in backwards order
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(関数テンプレート) [edit]

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