ProofFastFind2.hd2: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/proof_fast_find2.bend as ProofFastFind2
Lines 23-29 of lawful-bytes@0.1.1.0/proof_fast_find2.bend: https://jend.leeeet.dev/read.txt?path=lawful-bytes@0.1.1.0/proof_fast_find2.bend&start_line=23&end_line=29

import Base

# Whether the head of a list is c1 or c2.
def hd2(xs: List<&2, U32>, +c1: U32, +c2: U32) -> Bool:
  match xs:
    case Nil{}:
      False{}
    case Con{+x, t}:
      U32.is_eq(x, c1) || U32.is_eq(x, c2)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq