1
2// Copyright Oliver Kowalke 2009.
3// Distributed under the Boost Software License, Version 1.0.
4// (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6
7#include <boost/coroutine/all.hpp>
8
9#include <cstdlib>
10#include <iostream>
11
12#include <boost/bind.hpp>
13#include <boost/foreach.hpp>
14#include <boost/range.hpp>
15
16void power( boost::coroutines::asymmetric_coroutine< int >::push_type & sink, int number, int exponent)
17{
18 int counter = 0;
19 int result = 1;
20 while ( counter++ < exponent)
21 {
22 result = result * number;
23 sink( result);
24 }
25}
26
27int main()
28{
29 {
30 std::cout << "using range functions" << std::endl;
31 boost::coroutines::asymmetric_coroutine< int >::pull_type source( boost::bind( f: power, a1: _1, a2: 2, a3: 8) );
32 boost::coroutines::asymmetric_coroutine< int >::pull_type::iterator e( boost::end( r&: source) );
33 for ( boost::coroutines::asymmetric_coroutine< int >::pull_type::iterator i( boost::begin( r&: source) );
34 i != e; ++i)
35 std::cout << * i << " ";
36 }
37
38 {
39 std::cout << "\nusing BOOST_FOREACH" << std::endl;
40 boost::coroutines::asymmetric_coroutine< int >::pull_type source( boost::bind( f: power, a1: _1, a2: 2, a3: 8) );
41 BOOST_FOREACH( int i, source)
42 { std::cout << i << " "; }
43 }
44
45 std::cout << "\nDone" << std::endl;
46
47 return EXIT_SUCCESS;
48}
49

source code of boost/libs/coroutine/example/asymmetric/power.cpp