BlockIndexPolicy.contains: def of mylsm-lsm-store@0.6.0.1
Import: import mylsm-lsm-store@0.6.0.1/src/scan/BlockIndexPolicy.bend as BlockIndexPolicy
Lines 44-46 of mylsm-lsm-store@0.6.0.1/src/scan/BlockIndexPolicy.bend: https://jend.leeeet.dev/read.txt?path=mylsm-lsm-store@0.6.0.1/src/scan/BlockIndexPolicy.bend&start_line=44&end_line=46

import Base

# Accepts a block ordinal only when a serialized index contains that block.
def contains(block_count: Nat, index: Nat) -> Bool:
  Nat.is_lt(index, block_count)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt