Function stride

include/fplus/split.hpp:662–677

// stride(3, [0,1,2,3,4,5,6,7]) == [0,3,6]
template <typename Container>
Container stride(std::size_t step, const Container& xs)
{
    assert(step > 0);
    Container ys;
    auto it = internal::get_back_inserter(ys);
    auto it_in = std::begin(xs);
    std::size_t i = 0;
    const auto xs_size = size_of_cont(xs);
    while (it_in != std::end(xs)) {
        *it = *it_in;
        std::size_t increment = std::min(step, xs_size - i);
        internal::advance_iterator(it_in, increment);
        i += increment;
    }
    return ys;
}

// API search type: winsorize : (Float, [Float]) -> [Float]
// fwd bind count: 1