| 1 | #include "boost/range/adaptor/transformed.hpp"
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| 2 | #include "boost/range/algorithm/copy.hpp"
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| 3 | #include "boost/range/algorithm/max_element.hpp"
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| 4 | #include <iostream>
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| 5 | #include <vector>
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| 6 |
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| 7 | struct double_int
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| 8 | {
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| 9 | typedef int result_type;
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| 10 | int operator()(int x) const { return x * 2; }
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| 11 | };
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| 12 |
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| 13 | int main(int argc, const char* argv[])
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| 14 | {
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| 15 | using namespace boost::adaptors;
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| 16 |
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| 17 | std::vector<int> input{1,2,3,4,5,6,7,8,9,10};
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| 18 |
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| 19 | std::cout << *boost::max_element(input | transformed(double_int())) << std::endl;
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| 20 |
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| 21 | return 0;
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| 22 | }
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