A RetroSearch Logo

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Search Query:

Showing content from https://cplusplus.com/reference/set/set/clear/ below:

public member function

<set>

std::set::clear

Clear content

Removes all elements from the set container (which are destroyed), leaving the container with a size of 0.

Parameters none

Return value none

Example 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
// set::clear
#include <iostream>
#include <set>

int main ()
{
  std::set<int> myset;

  myset.insert (100);
  myset.insert (200);
  myset.insert (300);

  std::cout << "myset contains:";
  for (std::set<int>::iterator it=myset.begin(); it!=myset.end(); ++it)
    std::cout << ' ' << *it;
  std::cout << '\n';

  myset.clear();
  myset.insert (1101);
  myset.insert (2202);

  std::cout << "myset contains:";
  for (std::set<int>::iterator it=myset.begin(); it!=myset.end(); ++it)
    std::cout << ' ' << *it;
  std::cout << '\n';

  return 0;
}

Output: 
myset contains: 100 200 300
myset contains: 1101 2202


Complexity Linear in size (destructions).

Iterator validity All iterators, pointers and references related to this container are invalidated.

Data races The container is modified.
All contained elements are modified.

Exception safetyNo-throw guarantee: this member function never throws exceptions.

See also
set::erase
Erase elements (public member function)
set::size
Return container size (public member function)
set::empty
Test whether container is empty (public member function)

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4