swapping.cpp

来自「Think in C++ 2nd」· C++ 代码 · 共 41 行

//: C20:Swapping.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// All basic sequence containers can be swapped
#include "Noisy.h"
#include <list>
#include <vector>
#include <deque>
#include <iostream>
#include <algorithm>
using namespace std;
ostream_iterator<Noisy> out(cout, " ");

template<class Cont>
void print(Cont& c, char* comment = "") {
  cout << "\n" << comment << ": ";
  copy(c.begin(), c.end(), out);
  cout << endl;
}

template<class Cont>
void testSwap(char* cname) {
  Cont c1, c2;
  generate_n(back_inserter(c1), 10, NoisyGen());
  generate_n(back_inserter(c2), 5, NoisyGen());
  cout << "\n" << cname << ":" << endl;
  print(c1, "c1"); print(c2, "c2");
  cout << "\n Swapping the " << cname 
    << ":" << endl;
  c1.swap(c2);
  print(c1, "c1"); print(c2, "c2");
}  

int main() {
  testSwap<vector<Noisy> >("vector");
  testSwap<deque<Noisy> >("deque");
  testSwap<list<Noisy> >("list");
} ///:~