foreach.cpp

来自「Thinking in C++(Second Editon)」· C++ 代码 · 共 28 行

//: C06:ForEach.cpp {-mwcc}
// From "Thinking in C++, Volume 2", by Bruce Eckel & Chuck Allison.
// (c) 1995-2004 MindView, Inc. All Rights Reserved.
// See source code use permissions stated in the file 'License.txt',
// distributed with the code package available at www.MindView.net.
// Use of STL for_each() algorithm.
//{L} Counted
#include <algorithm>
#include <iostream>
#include "Counted.h"
using namespace std;

// Function object:
template<class T> class DeleteT {
public:
  void operator()(T* x) { delete x; }
};

// Template function:
template<class T> void wipe(T* x) { delete x; }

int main() {
  CountedVector B("two");
  for_each(B.begin(), B.end(), DeleteT<Counted>());
  CountedVector C("three");
  for_each(C.begin(), C.end(), wipe<Counted>);
} ///:~