void assign( size_type count, const T& value ); | (1) | (since C++11) |
template< class InputIt > void assign( InputIt first, InputIt last ); | (2) | (since C++11) |
void assign( std::initializer_list<T> ilist ); | (3) | (since C++11) |
Replaces the contents of the container.
1) Replaces the contents with
count
copies of value value
2) Replaces the contents with copies of those in the range
[first, last)
. This overload has the same effect as overload (1) if InputIt is an integral type. | (until C++11) |
This overload only participates in overload resolution if InputIt satisfies InputIterator . | (since C++11) |
3) Replaces the contents with the elements from the initializer list
ilist
.Parameters
count | - | the new size of the container |
value | - | the value to initialize elements of the container with |
first, last | - | the range to copy the elements from |
ilist | - | initializer list to copy the values from |
Complexity
1) Linear in
count
2) Linear in distance between
first
and last
3) Linear in
ilist.size()
Example
The following code uses assign
to add several characters to a std::forward_list<char>
:
#include <forward_list> #include <iostream> int main() { std::forward_list<char> characters; characters.assign(5, 'a'); for (char c : characters) { std::cout << c << '\n'; } return 0; }
Output:
a a a a a
See also
constructs the forward_list (public member function) |
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