Method insert

src/fl/stl/unordered_map_small.h:291–298

Insertion — does NOT overwrite if key exists

    // Insertion — does NOT overwrite if key exists
    fl::pair<iterator, bool> insert(const value_type& kv) FL_NOEXCEPT {
        size_type idx = find_index(kv.first);
        if (idx != npos()) {
            return fl::pair<iterator, bool>(iterator(this, idx), false);
        }
        idx = do_insert(kv);
        return fl::pair<iterator, bool>(iterator(this, idx), true);
    }

    fl::pair<iterator, bool> insert(value_type&& kv) FL_NOEXCEPT {
        size_type idx = find_index(kv.first);