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std::make_move_iterator

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Iterator Bibliothek
Iterator Primitiven
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Iterator primitives
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iterator_traits
input_iterator_tag
output_iterator_tag
forward_iterator_tag
bidirectional_iterator_tag
random_access_iterator_tag
iterator
Iterator Adaptern
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Iterator adaptors
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reverse_iterator
make_move_iterator(C++11)
back_inserter
front_inserter
inserter
Stream-Iteratoren
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Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Iterator Operationen
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Iterator operations
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advance
distance
prev(C++11)
next(C++11)
Reichen Zugang
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Range access
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begin(C++11)
end(C++11)
 
Defined in header <iterator>
template< class Iterator >
std::move_iterator<Iterator> make_move_iterator( const Iterator& i );
(seit C++11)
make_move_iterator ist eine Komfortfunktion Vorlage, die eine std::move_iterator für die gegebene Iterator i mit dem Typ von der Art der Argumentation ableiten konstruiert .
Original:
make_move_iterator is a convenience function template that constructs a std::move_iterator for the given iterator i with the type deduced from the type of the argument.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

i -
Ein Iterator umgewandelt Iterator zu bewegen
Original:
input iterator to be converted to move iterator
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[Bearbeiten] Rückgabewert

A std::move_iterator die verwendet werden, um aus den Elementen durch i abgerufen verschoben werden kann
Original:
A std::move_iterator which can be used to move from the elements accessed through i
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[Bearbeiten] Mögliche Implementierung

template< class Iterator >
std::move_iterator<Container> make_move_iterator( const Iterator& i)
{
    return std::move_iterator<Iterator>(i);
}

[Bearbeiten] Beispiel

#include <iostream>
#include <list>
#include <vector>
#include <string>
#include <iterator>
int main()
{
    std::list<std::string> s{"one", "two", "three"};
 
    std::vector<std::string> v1(s.begin(), s.end()); // copy
 
    std::vector<std::string> v2(std::make_move_iterator(s.begin()),
                                std::make_move_iterator(s.end())); // move
 
    std::cout << "v1 now holds: ";
    for(auto str : v1)
            std::cout << "\"" << str << "\" ";
    std::cout << "\nv2 now holds: ";
    for(auto str : v2)
            std::cout << "\"" << str << "\" ";
    std::cout << "\noriginal list now holds: ";
    for(auto str : s)
            std::cout << "\"" << str << "\" ";
    std::cout << '\n';
}

Output:

v1 now holds: "one" "two" "three"
v2 now holds: "one" "two" "three"
original list now holds: "" "" ""

[Bearbeiten] Siehe auch

Iterator-Adapter, der dereferenziert zu einem R-Wert auf
Original:
iterator adaptor which dereferences to an rvalue reference
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(Klassen-Template) [edit]
(C++11)
erhält einen rvalue Referenz
Original:
obtains an rvalue reference
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(Funktions-Template) [edit]