std::back_inserter – cppreference.com

std::back_inserter

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C++
 
Iterator Bibliothek
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Iterator primitives
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iterator_traits
input_iterator_tag
output_iterator_tag
forward_iterator_tag
bidirectional_iterator_tag
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iterator
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Iterator adaptors
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reverse_iterator
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Stream iterators
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istream_iterator
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Iterator Operationen
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Iterator operations
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Range access
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begin(C++11)
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<tbody> </tbody>
definiert in Header <iterator>
template< class Container > std::back_insert_iterator<Container> back_inserter( Container& c);
back_inserter ist eine Komfortfunktion Vorlage, die eine std::back_insert_iterator für den Container c mit dem Typ von der Art der Argumentation ableiten konstruiert .
Original:
back_inserter is a convenience function template that constructs a std::back_insert_iterator for the container c with the type deduced from the type of the argument.
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Parameter

c -
Container, der eine push_back Betrieb unterstützt
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container that supports a push_back operation
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Rückgabewert

Ein std::back_insert_iterator die zur Elemente an das Ende des Behälters c hinzugefügt werden können
Original:
A std::back_insert_iterator which can be used to add elements to the end of the container c
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Mögliche Implementierung

template< class Container >
std::back_insert_iterator<Container> back_inserter( Container& c)
{
    return std::back_insert_iterator<Container>(c);
}

Beispiel

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
int main()
{
    std::vector<int> v{1,2,3,4,5,6,7,8,9,10};
    std::fill_n(std::back_inserter(v), 3, -1);
    for(int n : v)
        std::cout << n << ' ';
}

Output: 

1 2 3 4 5 6 7 8 9 10 -1 -1 -1

Siehe auch