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41 lines
964 B
C++
41 lines
964 B
C++
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// Boost.Range library
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//
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// Copyright Neil Groves 2014. Use, modification and distribution is subject
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// to the Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// For more information, see http://www.boost.org/libs/range
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//
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#include "mock_range.hpp"
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#include <boost/range/adaptor/adjacent_filtered.hpp>
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namespace
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{
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struct always_true
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{
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typedef bool result_type;
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bool operator()(int, int) const
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{
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return true;
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}
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};
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} // anonymous namespace
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int main(int, const char**)
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{
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using boost::range::unit_test::mock_range;
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using boost::adaptors::adjacent_filter;
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// This next line should fail when Boost.Range concept checking is
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// enabled since the adjacent_filtered adaptor takes at least a
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// ForwardRange.
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return adjacent_filter(
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mock_range<boost::single_pass_traversal_tag>(),
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always_true()).front();
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}
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