def first_key

mylsm-lsm-store@0.6.0.1 · src/SortedRun.bend:141

import Base
import mylsm-lsm-store@0.6.0.1/src/MemTable.bend as MemTable

141# L1 helpers operate on entry runs to avoid a SortedRun <-> Sstable cycle.
142def first_key(entries: List<&2, MemTable.Entry>) -> Maybe<&2, String>:
143  match entries:
144    case Nil{}:
145      None{}
146    case Con{MemTable.Entry{key, val}, t}:
147      Some{key}