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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