transform.cpp

c++设计思想

//: C08:Transform.cpp
// From "Thinking in C++, 2nd Edition, Volume 2"
// by Bruce Eckel & Chuck Allison, (c) 2001 MindView, Inc.
// Available at www.BruceEckel.com.
// Use of STL transform() algorithm
//{L} ../TestSuite/Test
//{-msc}
#include "Counted.h"
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

template<class T>
T* deleteP(T* x) { delete x; return 0; }

template<class T> struct Deleter {
  T* operator()(T* x) { delete x; return 0; }
};

int main() {
  CountedVector cv("one");
  transform(cv.begin(), cv.end(), cv.begin(), 
    deleteP<Counted>);
  CountedVector cv2("two");
  transform(cv2.begin(), cv2.end(), cv2.begin(),
    Deleter<Counted>());
} ///:~