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// bll_and_function.cpp - The Boost Lambda Library -----------------------
//
// Copyright (C) 2000-2003 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
// Copyright (C) 2000-2003 Gary Powell (powellg@amazon.com)
//
// 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/core/lightweight_test.hpp>
#define BOOST_CHECK BOOST_TEST
#include "boost/lambda/lambda.hpp"
#include "boost/function.hpp"
#include <vector>
#include <map>
#include <set>
#include <string>
using namespace boost::lambda;
using namespace std;
void test_function() {
boost::function<int (int, int)> f;
f = _1 + _2;
BOOST_CHECK(f(1, 2)== 3);
int i=1; int j=2;
boost::function<int& (int&, int)> g = _1 += _2;
g(i, j);
BOOST_CHECK(i==3);
int* sum = new int();
*sum = 0;
boost::function<int& (int)> counter = *sum += _1;
counter(5); // ok, sum* = 5;
BOOST_CHECK(*sum == 5);
delete sum;
// The next statement would lead to a dangling reference
// counter(3); // error, *sum does not exist anymore
}
int main() {
test_function();
return boost::report_errors();
}
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