Bitlist.length: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/containers/bitlist.bend as Bitlist
Lines 50-52 of bend-collections@1.0.0.0/src/containers/bitlist.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/containers/bitlist.bend&start_line=50&end_line=52

import Base

def length(s: Bitlist) -> Bitlist & Nat:
  BL{lim, +n, w} = s
  (BL{lim, n, w}, n)

Uses (4):
  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=bend-collections@1.0.0.0/src/containers/bitlist.bend&name=Bitlist