Fast.append.fin: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/fast.bend as Fast
Lines 122-124 of lawful-bytes@0.1.1.0/fast.bend: https://jend.leeeet.dev/read.txt?path=lawful-bytes@0.1.1.0/fast.bend&start_line=122&end_line=124

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

def append.fin(+dl: U32, +sl: U32, r: Array<U32> & Array<U32>) -> D.Bytes & D.Bytes:
  (db, sb) = r
  (D.Bytes{dl, db}, D.Bytes{sl, sb})

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  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=lawful-bytes@0.1.1.0/defs.bend&name=Bytes