Field.parity: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend as Field
Lines 127-129 of bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend&start_line=127&end_line=129

import Base
import bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend as L

# a mod 2 (the parity of the canonical representative)
def parity(a: List<&2, Nat>) -> Nat:
  Nat.mod(L.hd0(a), 2n)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mod
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/limbs.bend&name=hd0