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
power(boost::coroutines::asymmetric_coroutine<int>::push_type & sink,int number,int exponent)16 void 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
main()27 int main()
28 {
29 {
30 std::cout << "using range functions" << std::endl;
31 boost::coroutines::asymmetric_coroutine< int >::pull_type source( boost::bind( power, _1, 2, 8) );
32 boost::coroutines::asymmetric_coroutine< int >::pull_type::iterator e( boost::end( source) );
33 for ( boost::coroutines::asymmetric_coroutine< int >::pull_type::iterator i( boost::begin( 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( power, _1, 2, 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