| 149 | // Lookup operations |
| 150 | bool has(const Key &key) const { return data.contains(key); } |
| 151 | bool contains(const Key &key) const { return has(key); } // C++20 style |
| 152 | |
| 153 | /// Equality comparison (set equality: same elements, order-independent) |
| 154 | bool operator==(const unordered_set& other) const { |