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45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
// Range v3 library
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//
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// Copyright Eric Niebler 2014-present
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <vector>
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#include <range/v3/core.hpp>
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#include <range/v3/view/iota.hpp>
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#include <range/v3/algorithm/move.hpp>
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#include <range/v3/action/take_while.hpp>
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#include "../simple_test.hpp"
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#include "../test_utils.hpp"
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int main()
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{
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using namespace ranges;
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using namespace std::placeholders;
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auto v = views::ints(1,21) | to<std::vector>();
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auto & v2 = actions::take_while(v, std::bind(std::less<int>(), _1, 18));
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CHECK(&v2 == &v);
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CHECK(v.size() == 17u);
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CHECK(v.back() == 17);
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v = std::move(v) | actions::take_while([](int i){return i < 15;});
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CHECK(v.size() == 14u);
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CHECK(v.back() == 14);
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v |= actions::take_while([](int i){return i < 12;});
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CHECK(v.size() == 11u);
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CHECK(v.back() == 11);
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v |= actions::take_while([](int){return true;});
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CHECK(v.size() == 11u);
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v |= actions::take_while([](int){return false;});
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CHECK(v.size() == 0u);
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return ::test_result();
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}
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