ProofIndex.unsome: def of lawful-arrays@0.1.0.0
Import: import lawful-arrays@0.1.0.0/proof_index.bend as ProofIndex
Lines 619-624 of lawful-arrays@0.1.0.0/proof_index.bend: https://jend.leeeet.dev/read.txt?path=lawful-arrays@0.1.0.0/proof_index.bend&start_line=619&end_line=624

import Base

def unsome(-T: Data, +d: T, m: Maybe<&2, T>) -> T:
  match m:
    case None{}:
      d
    case Some{x}:
      x

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe