std::fill – cppreference.com

std::fill

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C++
 
Algorithm Bibliothek
Funktionen
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Functions
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Nicht-modifizierende Sequenz Operationen
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Non-modifying sequence operations
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Modifizierende Sequenz Operationen
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Modifying sequence operations
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Partitionierungsoperationen
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Partitioning operations
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Sortierung Operationen (auf sortierten Bereiche)
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Sorting operations (on sorted ranges)
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Binary Suchaktionen (auf sortierten Bereiche)
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Binary search operations (on sorted ranges)
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Set-Operationen (auf sortierten Bereiche)
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Set operations (on sorted ranges)
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Heap-Operationen
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Heap operations
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Minimum / Maximum Operationen
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Minimum/maximum operations
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Numerische Operationen
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Numeric operations
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C-Bibliothek
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C library
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<tbody> </tbody>
definiert in Header <algorithm>
template< class ForwardIt, class T > void fill( ForwardIt first, ForwardIt last, const T& value );
Weist den angegebenen value zu den Elementen im Bereich [first, last) .
Original:
Assigns the given value to the elements in the range [first, last).
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Parameter

first, last -
der Bereich der Elemente zu ändern
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the range of elements to modify
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value -
der Wert zugewiesen werden
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the value to be assigned
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Type requirements
-
ForwardIt must meet the requirements of ForwardIterator.

Rückgabewert

(None)
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(none)
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Komplexität

Genau last - first Aufgaben .
Original:
Exactly last - first assignments.
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Mögliche Implementierung

template< class ForwardIt, class T >
void fill(ForwardIt first, ForwardIt last, const T& value)
{
    for (; first != last; ++first) {
        *first = value;
    }
}

Beispiel

Der folgende Code verwendet fill(), um alle Elemente eines Vektors von Ganzzahlen auf -1 gesetzt:
Original:
The following code uses fill() to set all of the elements of a vector of integers to -1:
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#include <algorithm>
#include <vector>
#include <iostream>
 
int main()
{
    int data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }
    std::vector<int> v1(data, data+10);
 
    std::fill(v1.begin(), v1.end(), -1);
 
    for (vector<int>::iterator it = v1.begin(); it != v1.end(); ++it) {
        std::cout << *it << " ";
    }
    std::cout << "\n";
}

Output: 

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1

Siehe auch