The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis
#include <iostream>
#include <list>
#include <algorithm>
#include "print.hpp"
using namespace std;
class Nth { // function object that returns true for the nth call
private:
int nth; // call for which to return true
int count; // call counter
public:
Nth (int n) : nth(n), count(0) {
}
bool operator() (int) {
return ++count == nth;
}
};
int main()
{
list<int> coll = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
PRINT_ELEMENTS(coll,"coll: ");
// remove third element
list<int>::iterator pos;
pos = remove_if(coll.begin(),coll.end(), // range
Nth(3)); // remove criterion
coll.erase(pos,coll.end());
PRINT_ELEMENTS(coll,"3rd removed: ");
}