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std::make_move_iterator

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< cpp‎ | iterator

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C++
 
Biblioteca Iterator
Primitive iteratori
Original:
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
Adattatori iteratori
Original:
Iterator adaptors
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reverse_iterator
make_move_iterator(C++11)
back_inserter
front_inserter
inserter
Flusso iteratori
Original:
Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Operazioni di iteratori
Original:
Iterator operations
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advance
distance
prev(C++11)
next(C++11)
Intervallo accesso
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Range access
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begin(C++11)
end(C++11)
 
Elemento definito nell'header <iterator>
template< class Iterator >
std::move_iterator<Iterator> make_move_iterator( const Iterator& i );
 (dal C++11)
make_move_iterator è un modello di funzione di convenienza che costruisce un std::move_iterator per il i iteratore dato con il tipo dedotto dal tipo dell'argomento.
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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Indice

[modifica] Parametri

i -
iteratore di input da convertire a muoversi iteratore
Original:
input iterator to be converted to move iterator
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[modifica] Valore di ritorno

Un std::move_iterator che può essere utilizzato per spostare dagli elementi accessibili tramite i
Original:
A std::move_iterator which can be used to move from the elements accessed through i
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[modifica] Possibile implementazione

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

[modifica] Esempio

#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: "" "" ""

[modifica] Vedi anche

(C++11)
Adattatore iteratore che dereferenziazioni a un riferimento rvalue
Original:
iterator adaptor which dereferences to an rvalue reference
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(classe template) [modifica]
(C++11)
ottiene un riferimento rvalue
Original:
obtains an rvalue reference
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(funzione di modello) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/iterator/make_move_iterator&oldid=25889"