1// Boost.Range library
2//
3// Copyright Thorsten Ottosen 2003-2004. Use, modification and
4// distribution is subject to the Boost Software License, Version
5// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7//
8// For more information, see http://www.boost.org/libs/range/
9//
10
11#include <boost/detail/workaround.hpp>
12
13#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
14# pragma warn -8091 // suppress warning in Boost.Test
15# pragma warn -8057 // unused argument argc/argv in Boost.Test
16#endif
17
18#include <boost/range/functions.hpp>
19#include <boost/range/metafunctions.hpp>
20#include <boost/range/as_literal.hpp>
21#include <boost/test/test_tools.hpp>
22#include <iostream>
23#include <algorithm>
24#include <vector>
25#include <utility>
26
27namespace
28{
29 //
30 // example: extracting bounds in a generic algorithm
31 //
32 template< typename Range, typename T >
33 inline typename boost::range_iterator<Range>::type
34 find( Range& c, const T& value )
35 {
36 return std::find( boost::begin( c ), boost::end( c ), value );
37 }
38
39 template< typename Range, typename T >
40 inline typename boost::range_iterator<Range>::type
41 find( const Range& c, const T& value )
42 {
43 return std::find( boost::begin( c ), boost::end( c ), value );
44 }
45
46 //
47 // replace first value and return its index
48 //
49 template< class Range, class T >
50 inline typename boost::range_difference<Range>::type
51 my_generic_replace( Range& c, const T& value, const T& replacement )
52 {
53 typename boost::range_iterator<Range>::type found = find( c, value );
54
55 if( found != boost::end( c ) )
56 *found = replacement;
57 return std::distance( boost::begin( c ), found );
58 }
59}
60
61
62void check_algorithm()
63{
64 //
65 // usage
66 //
67 const int N = 5;
68 std::vector<int> my_vector;
69 int values[] = { 1,2,3,4,5,6,7,8,9 };
70 my_vector.assign( first: values, last: values + 9 );
71 typedef std::vector<int>::iterator iterator;
72 std::pair<iterator,iterator> my_view( boost::begin( r&: my_vector ),
73 boost::begin( r&: my_vector ) + N );
74 BOOST_CHECK_EQUAL( my_generic_replace( my_vector, 4, 2 ), 3 );
75 BOOST_CHECK_EQUAL( my_generic_replace( my_view, 4, 2 ), N );
76
77}
78
79#include <boost/test/unit_test.hpp>
80using boost::unit_test::test_suite;
81
82test_suite* init_unit_test_suite( int argc, char* argv[] )
83{
84 test_suite* test = BOOST_TEST_SUITE( "Range Test Suite" );
85
86 test->add( BOOST_TEST_CASE( &check_algorithm ) );
87
88 return test;
89}
90
91
92
93

source code of boost/libs/range/test/algorithm_example.cpp