Limbs.hd0: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/crypto/poly1305/limbs.bend as Limbs
Lines 14-18 of bend-collections-laws-crypto@1.0.0.0/src/crypto/poly1305/limbs.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/poly1305/limbs.bend&start_line=14&end_line=18

import Base

# The first limb (0 for the empty list) and the rest.
def hd0(xs: List<&2, U32>) -> U32:
  match xs:
    case Nil{}: 0
    case x <> t: x

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32