Initialize iterator to end state:
| 255 | void begin() { state.begin(ref); } |
| 256 | // Initialize iterator to end state: |
| 257 | void end() { state.end(ref); } |
| 258 | // Returns current `value` |
| 259 | const T get() { return state.get(ref); } |
| 260 | // Return true if `state != s`: |