algorithm_test.cpp

C++的一个好库。。。现在很流行

//  bll_and_function.cpp  - The Boost Lambda Library -----------------------
//
// Copyright (C) 2000-2003 Jaakko J鋜vi ([e-mail])
// Copyright (C) 2000-2003 Gary Powell ([e-mail])
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org

// test using BLL and boost::function

#include <boost/test/minimal.hpp>    // see "Header Implementation Option"

#include "boost/lambda/lambda.hpp"
#include "boost/lambda/bind.hpp"
#include "boost/lambda/algorithm.hpp"

#include <vector>
#include <map>
#include <set>
#include <string>

#include <iostream>



void test_foreach() {
  using namespace boost::lambda;
  
  int a[10][20];
  int sum = 0;

  std::for_each(a, a + 10, 
                bind(ll::for_each(), _1, _1 + 20, 
                     protect((_1 = var(sum), ++var(sum)))));

  sum = 0;
  std::for_each(a, a + 10, 
                bind(ll::for_each(), _1, _1 + 20, 
                     protect((sum += _1))));

  BOOST_CHECK(sum == (199 + 1)/ 2 * 199);
}

// More tests needed (for all algorithms)

int test_main(int, char *[]) {

  test_foreach();

  return 0;
}