| Defined in header <algorithm> | ||
|---|---|---|
template< class ForwardIt, class T > void fill( ForwardIt first, ForwardIt last, const T& value ); |
Assigns the given value to the elements in the range [first, last).
Parameters
| first, last | - | the range of elements to modify |
| value | - | the value to be assigned |
| Type requirements | ||
- ForwardIt must meet the requirements of ForwardIterator. | ||
Return value
(none).
Complexity
Exactly last - first assignments.
Possible implementation
template< class ForwardIt, class T >
void fill(ForwardIt first, ForwardIt last, const T& value)
{
for (; first != last; ++first) {
*first = value;
}
} |
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()
{
std::vector<int> v{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
std::fill(v.begin(), v.end(), -1);
for (auto elem : v) {
std::cout << elem << " ";
}
std::cout << "\n";
}Output:
-1 -1 -1 -1 -1 -1 -1 -1 -1 -1
See also
| assigns a value to a number of elements (function template) | |
| (C++11) | copies a range of elements to a new location (function template) |
| saves the result of a function in a range (function template) | |
| applies a function to a range of elements (function template) | |
| std::experimental::parallel::fill
(parallelism TS) | parallelized version of std::fill (function template) |
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