Function insert_or_assign

src/fl/stl/unordered_map.h:415–439

insert_or_assign() - C++17: insert new element or update existing Returns pair where bool is true if inserted, false if updated

    // insert_or_assign() - C++17: insert new element or update existing
    // Returns pair<iterator, bool> where bool is true if inserted, false if updated
    pair<iterator, bool> insert_or_assign(const Key &key, T &&value) {
        const bool will_rehash = needs_rehash();
        if (will_rehash) {
            if (_tombstones > _size) {
                rehash_inline_no_resize();
            } else {
                rehash_internal(_buckets.size() * 2);
            }
        }
        fl::size idx;
        bool is_new;
        fl::pair<fl::size, bool> p = find_slot(key);
        idx = p.first;
        is_new = p.second;
        if (is_new) {
            _buckets[idx].key = key;
            _buckets[idx].value = fl::move(value);
            mark_occupied(idx);
            ++_size;
        } else {
            FASTLED_ASSERT(idx != npos(), "unordered_map::insert_or_assign: invalid index");
            _buckets[idx].value = fl::move(value);
        }
        return {iterator(this, idx), is_new};
    }

    // insert_or_assign() with move key - C++17
    pair<iterator, bool> insert_or_assign(Key &&key, T &&value) {