Bytes.append.go: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/bytes.bend as Bytes
Lines 42-50 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=42&end_line=50

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

# n more bytes of src, from s; r holds src's byte s.
def append.go(n: Nat, dst: D.Bytes, r: D.Bytes & U32, +s: U32) -> D.Bytes & D.Bytes:
  match n:
    case 0n:
      (src, x) = r
      (dst, src)
    case 1n+k:
      (src, +x) = r
      append.go(k, push(dst, x), at(src, (s + 1 : U32)), (s + 1 : U32))

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=push
  https://jend.leeeet.dev/definition.txt?path=lawful-bytes@0.1.1.0/defs.bend&name=Bytes