std::move
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| definiert in Header <algorithm>
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| template< class InputIt, class OutputIt > OutputIt move( InputIt first, InputIt last, OutputIt d_first ); |
(seit C++11) | |
[first, last), in einen anderen Bereich beginnend bei d_first. Nach dieser Operation werden die Elemente in der eingefahrenen vom Bereich noch gültige Werte enthalten des entsprechenden Typs, aber nicht unbedingt die gleichen Werte wie vor dem Umzug .[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.You can help to correct and verify the translation. Click here for instructions.
Inhaltsverzeichnis |
[Bearbeiten] Parameter
| first, last | - | das Spektrum der Elemente zu bewegen
Original: the range of elements to move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| d_first | - | der Beginn des Zielbereichs. Wenn d_first in [first, last) ist, muss std::move_backward statt NJ std :: move </ span> verwendet werden . Original: the beginning of the destination range. If d_first is within [first, last), std::move_backward must be used instead of NJ std :: move </ span>. </div>The text has been machine-translated via Google Translate. </div></div></div></div>
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| Type requirements | ||
-InputIt must meet the requirements of InputIterator.
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-OutputIt must meet the requirements of OutputIterator.
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[Bearbeiten] Rückgabewert
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[Bearbeiten] Komplexität
last - first bewegen Aufgaben .last - first move assignments.You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten] Mögliche Implementierung
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; } |
[Bearbeiten] Beispiel
Der folgende Code bewegt Thread-Objekte (die selbst nicht kopierbar) von einem Behälter in einen anderen. </ p>
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#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
std :: move </ span>(v.begin(), v.end(), std::back_inserter(l));
for(auto& t : l) t.join();
}
</div>
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thread 1 ended thread 2 ended thread 3 ended
[Bearbeiten] Siehe auch
| (C++11) |
bewegt sich eine Reihe von Elementen, um einen neuen Standort in rückwärts um Original: moves a range of elements to a new location in backwards order The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template) |
