Function nub_by

include/fplus/container_common.hpp:1711–1722

// O(n^2)
template <typename Container, typename BinaryPredicate>
Container nub_by(BinaryPredicate p, const Container& xs)
{
    Container result;
    auto itOut = internal::get_back_inserter(result);
    for (const auto& x : xs) {
        auto eqToX = bind_1st_of_2(p, x);
        if (!is_elem_of_by(eqToX, result)) {
            *itOut = x;
        }
    }
    return result;
}

// API search type: nub_on : ((a -> b), [a]) -> [a]
// fwd bind count: 1