def peek.front.head
import mylsm-lsm-store@0.6.0.1/src/coordinator/RequestQueue.bend as RequestQueueimport Base
246def peek.front.head(
247 tail: List<&1, Pending>,
248 back: List<&1, Pending>,
249 count: Nat,
250 bytes: Nat,
251 pair: Pending & HeadMetadata
252) -> PeekResult:
253 match pair:
254 case (retained, metadata):
255 PeekResult{Queue{Con{retained, tail}, back, count, bytes},
256 Some{metadata}}