std::fill

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Defined in header <algorithm>

template< class ForwardIterator, class T >
void fill( ForwardIterator first, ForwardIterator last, const T& value );

Assigns the given value to the elements in the range [first, last).

Contents

[edit] Parameters

first, last - the range of elements to modify
value - the value to be assigned

[edit] Return value

(none)

[edit] Complexity

Exactly last - first assignments.

[edit] Equivalent function

[edit] Example

The following code uses fill() to set all of the elements of a vector of integers to -1:

#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

[edit] See also

fill_n
assigns a value to a number of elements
(function template)
generate
saves the result of a function in a range
(function template)
transform
applies a function to a range of elements
(function template)