Method FindByItem

library/cpp/cache/cache.h:687–695

    bool MultiValue;

    TIterator FindByItem(TItem* item) {
        std::pair<TIndexIterator, TIndexIterator> p = Index.equal_range(*item);
        // we have to delete the exact unlinked item (there may be multiple items for one key)
        TIndexIterator it;
        for (it = p.first; it != p.second; ++it)
            if (&*it == item)
                break;
        return (it == p.second ? End() : TIterator(it));
    }

    void EraseFromIndex(TItem* item) {
        TDeleter::Destroy(item->Value);