def last_key
import mylsm-lsm-store@0.6.0.1/src/SortedRun.bend as SortedRunimport Base
import mylsm-lsm-store@0.6.0.1/src/MemTable.bend as MemTable
157# Return the last key in the sorted-run operations.
158def last_key(entries: List<&2, MemTable.Entry>) -> Maybe<&2, String>:
159 match entries:
160 case Nil{}:
161 None{}
162 case Con{MemTable.Entry{key, val}, t}:
163 last_key_go(t, key)