LAWS.swap_old: law of lawful-arrays@0.1.0.0
Import: import lawful-arrays@0.1.0.0/LAWS.bend as LAWS
Lines 136-144 of lawful-arrays@0.1.0.0/LAWS.bend: https://jend.leeeet.dev/read.txt?path=lawful-arrays@0.1.0.0/LAWS.bend&start_line=136&end_line=144

import Base
import lawful-arrays@0.1.0.0/defs.bend as D

law swap_old:
  for -T: Data
  for a: Array<T>
  for d: Nat
  for i: U32
  for v: T
  for hf: {D.full(T, a, d) == True{} : Bool}
  for hd: {Nat.is_lt(d, 32n) == True{} : Bool}
  {Some{Pair.snd(Array<T>, T, Array.swap(T, a, i, v))} == List.get(&2, T, D.view(T, a), D.slot(i, d)) : Maybe<&2, T>}

Uses (14):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array.swap
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.get
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair.snd
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/PROOF.bend&name=swap_old.go
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/defs.bend&name=full
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/defs.bend&name=slot
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/defs.bend&name=view
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/proof_tree.bend&name=mirror