Bytes.shift.go: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/bytes.bend as Bytes
Lines 151-159 of lawful-bytes@0.1.1.0/bytes.bend: https://jend.leeeet.dev/read.txt?path=lawful-bytes@0.1.1.0/bytes.bend&start_line=151&end_line=159

import Base
import lawful-bytes@0.1.1.0/defs.bend as D

# Bytes j + k onwards moved to j; r holds byte j + k.
def shift.go(n: Nat, r: D.Bytes & U32, +j: U32, +k: U32) -> D.Bytes:
  match n:
    case 0n:
      (b, x) = r
      b
    case 1n+m:
      (b, +x) = r
      shift.go(m, at(set(b, j, x), ((j + 1 : U32) + k : U32)), (j + 1 : U32), k)

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=lawful-bytes@0.1.1.0/bytes.bend&name=at
  https://jend.leeeet.dev/definition.txt?path=lawful-bytes@0.1.1.0/bytes.bend&name=set
  https://jend.leeeet.dev/definition.txt?path=lawful-bytes@0.1.1.0/defs.bend&name=Bytes