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38 lines
1.0 KiB
C++
38 lines
1.0 KiB
C++
// Range v3 library
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//
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// Copyright Eric Niebler 2019
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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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//
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// Project home: https://github.com/ericniebler/range-v3
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//
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///[accumulate_ints]
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// Sums the first ten squares and prints them, using views::ints to generate
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// and infinite range of integers, views::transform to square them, views::take
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// to drop all but the first 10, and accumulate to sum them.
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#include <iostream>
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#include <vector>
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#include <range/v3/numeric/accumulate.hpp>
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#include <range/v3/view/iota.hpp>
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#include <range/v3/view/take.hpp>
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#include <range/v3/view/transform.hpp>
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using std::cout;
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int main()
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{
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using namespace ranges;
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int sum = accumulate(views::ints(1, unreachable) | views::transform([](int i) {
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return i * i;
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}) | views::take(10),
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0);
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// prints: 385
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cout << sum << '\n';
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}
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///[accumulate_ints]
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