1// istreambuf_test - test lambda function objects with istreambuf_iterator
2//
3// Copyright (c) 2007 Peter Dimov
4//
5// Distributed under the Boost Software License, Version 1.0.
6// See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt
8
9#include <boost/lambda/lambda.hpp>
10#include <boost/core/lightweight_test.hpp>
11#include <iterator>
12#include <sstream>
13#include <algorithm>
14
15int main()
16{
17 using namespace boost::lambda;
18
19 std::stringstream is( "ax2" );
20
21 std::istreambuf_iterator<char> b2( is );
22 std::istreambuf_iterator<char> e2;
23
24 std::istreambuf_iterator<char> i = std::find_if( first: b2, last: e2, pred: _1 == 'x' );
25
26 BOOST_TEST( *i == 'x' );
27 BOOST_TEST( std::distance( i, e2 ) == 2 );
28
29 return boost::report_errors();
30}
31

source code of boost/libs/lambda/test/istreambuf_test.cpp