associnserter.cpp

Thingking in c++第二版

//: C04:AssocInserter.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// Using an insert_iterator so fill_n() and
// generate_n() can be used with associative 
// containers
#include "SimpleGenerators.h"
#include <iterator>
#include <iostream>
#include <algorithm>
#include <set>
#include <map>
using namespace std;

int main() {
  set<int> s;
  fill_n(inserter(s, s.begin()), 10, 47);
  generate_n(inserter(s, s.begin()), 10, 
    IncrGen<int>(12));
  copy(s.begin(), s.end(), 
    ostream_iterator<int>(cout, "\n"));
  
  map<int, int> m;
  fill_n(inserter(m, m.begin()), 10, 
    make_pair(90,120));
  generate_n(inserter(m, m.begin()), 10, 
    PairGen<int, int>(3, 9));
  copy(m.begin(), m.end(), 
    ostream_iterator<pair<int,int> >(cout,"\n"));
} ///:~