Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
forward_list::remove() in C++ STL
In this article we will be discussing the working, syntax and examples of forward_list::remove() and forward_list::remove_if() functions in C++.
What is a Forward_list in STL?
Forward list are sequence containers that allow constant time insert and erase operations anywhere within the sequence. Forward list are implement as a singly-linked lists. The ordering is kept by the association to each element of a link to the next element in the sequence.
What is forward_list::remove()?
forward_list::remove() is an inbuilt function in C++ STL which is declared in header file. remove() is used to removes all the elements from the forward_list. The container size is decresed by the number of elements removed.
Syntax
flist_container1.remove(const value_type& value );
This function can accept only one parameter, i.e. the value which is to be inserted at the beginning.
Return Value
This function returns nothing
Example
In the below code we are
#include <forward_list>
#include <iostream>
using namespace std;
int main(){
forward_list<int> forwardList = {2, 3, 1, 1, 1, 6, 7};
//List before applying remove operation
cout<<"list before applying remove operation : ";
for(auto i = forwardList.begin(); i != forwardList.end(); ++i)
cout << ' ' << *i;
//List after applying remove operation
cout<<"\nlist after applying remove operation : ";
forwardList.remove(1);
for(auto i = forwardList.begin(); i != forwardList.end(); ++i)
cout << ' ' << *i;
}Output
If we run the above code it will generate the following output
list before applying remove operation : 2, 3, 1, 1, 1, 6, 7 list after applying remove operation : 2, 3, 6, 7
256 Views
