Function StableSortUniqueBy

util/generic/algorithm.h:325–328

template <class C, class TGetKey>
void StableSortUniqueBy(C& c, const TGetKey& getKey) {
    StableSortBy(c, getKey);
    c.erase(UniqueBy(c.begin(), c.end(), getKey), c.end());
}

template <class C, class TValue>
void Erase(C& c, const TValue& value) {