std::forward_list::resize

Parameters

n

New container size, expressed in number of elements.
Member type size_type is an unsigned integral type.

val

Object whose content is copied to the added elements in case that n is greater than the current container size.
Member type value_type is the type of the elements in the container, defined in forward_list as an alias of the first template parameter (T).

Return Value

Example

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// resizing forward_list
#include <iostream>
#include <forward_list>
int main ()
{
  std::forward_list<int> mylist = {10, 20, 30, 40, 50};
                                // 10 20 30 40 50
  mylist.resize(3);             // 10 20 30
  mylist.resize(5,100);         // 10 20 30 100 100
  std::cout << "mylist contains:";
  for (int& x: mylist) std::cout << ' ' << x;
  std::cout << '\n';
  return 0;
}

mylist contains: 10 20 30 100 100

Complexity

Iterator validity

Data races

Exception safety

See also

forward_list::clear

Clear content (public member function)

forward_list::erase_after

Erase elements (public member function)

forward_list::insert_after

Insert elements (public member function)

forward_list::max_size

Return maximum size (public member function)

forward_list::remove

Remove elements with specific value (public member function)

forward_list::merge

Merge sorted lists (public member function)