libs/bimap/example/bimap_and_boost/range.cpp
// Boost.Bimap
//
// Copyright (c) 2006-2007 Matias Capeletto
//
// 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)
// VC++ 8.0 warns on usage of certain Standard Library and API functions that
// can be cause buffer overruns or other possible security issues if misused.
// See https://web.archive.org/web/20071014014301/http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
// But the wording of the warning is misleading and unsettling, there are no
// portable alternative functions, and VC++ 8.0's own libraries use the
// functions in question. So turn off the warnings.
#define _CRT_SECURE_NO_DEPRECATE
#define _SCL_SECURE_NO_DEPRECATE
// Boost.Bimap Example
//-----------------------------------------------------------------------------
#include <boost/config.hpp>
#include <iostream>
#include <boost/range/functions.hpp>
#include <boost/range/metafunctions.hpp>
//[ code_bimap_and_boost_range_functions
template< class ForwardReadableRange, class UnaryFunctor >
UnaryFunctor for_each(const ForwardReadableRange & r, UnaryFunctor func)
{
typedef typename
boost::range_const_iterator<ForwardReadableRange>::type const_iterator;
for(const_iterator i= boost::begin(r), iend= boost::end(r); i!=iend; ++i )
{
func(*i);
}
return func;
}
template< class ForwardReadableRange, class Predicate >
typename boost::range_difference<ForwardReadableRange>::type
count_if(const ForwardReadableRange & r, Predicate pred)
{
typedef typename
boost::range_const_iterator<ForwardReadableRange>::type const_iterator;
typename boost::range_difference<ForwardReadableRange>::type c = 0;
for( const_iterator i = boost::begin(r), iend = boost::end(r); i != iend; ++i )
{
if( pred(*i) ) ++c;
}
return c;
}
//]
#include <boost/bimap/bimap.hpp>
#include <boost/bimap/multiset_of.hpp>
#include <boost/bimap/support/lambda.hpp>
#include <boost/bind.hpp>
using namespace boost::bimaps;
using namespace boost;
//[ code_bimap_and_boost_range
struct pair_printer
{
pair_printer(std::ostream & o) : os(o) {}
template< class Pair >
void operator()(const Pair & p)
{
os << "(" << p.first << "," << p.second << ")";
}
private:
std::ostream & os;
};
struct second_extractor
{
template< class Pair >
const typename Pair::second_type & operator()(const Pair & p)
{
return p.second;
}
};
int main()
{
typedef bimap< double, multiset_of<int> > bm_type;
bm_type bm;
bm.insert( bm_type::value_type(2.5 , 1) );
bm.insert( bm_type::value_type(3.1 , 2) );
//...
bm.insert( bm_type::value_type(6.4 , 4) );
bm.insert( bm_type::value_type(1.7 , 2) );
// Print all the elements of the left map view
for_each( bm.left, pair_printer(std::cout) );
// Print a range of elements of the right map view
for_each( bm.right.range( 2 <= _key, _key < 6 ), pair_printer(std::cout) );
// Count the number of elements where the data is equal to 2 from a
// range of elements of the left map view
count_if( bm.left.range( 2.3 < _key, _key < 5.4 ),
bind<int>( second_extractor(), _1 ) == 2 );
return 0;
}
//]