ptrfun1.cpp

c++编程思想2TICPP-2nd-ed-Vol-two.zip

//: C06:PtrFun1.cpp
// 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.
// Using ptr_fun() with a unary function.
#include <algorithm>
#include <cmath>
#include <functional>
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;

int d[] = { 123, 94, 10, 314, 315 };
const int DSZ = sizeof d / sizeof *d;

bool isEven(int x) { return x % 2 == 0; }

int main() {
  vector<bool> vb;
  transform(d, d + DSZ, back_inserter(vb),
    not1(ptr_fun(isEven)));
  copy(vb.begin(), vb.end(),
    ostream_iterator<bool>(cout, " "));
  cout << endl;
  // Output: 1 0 0 0 1
} ///:~