Refinement.law_swap_observed: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/storage/refinement.bend as Refinement
Lines 401-404 of bendtorch-core@0.1.0.0/src/storage/refinement.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&start_line=401&end_line=404

import Base
import bendtorch-core@0.1.0.0/src/storage/model.bend as Model

def law_swap_observed(-T: Data, +d: Nat, array: Array<T>, +i: U32, new: T,
  valid: Model.Balanced(T, d, array)) ->
  {Some{second(T, Array.swap(T, array, i, new))} == Model.observe(T, d, array, route(d, i)) : Maybe<&2, T>}:
  swap_observed(T, d, array, i, new, swap(T, d, array, i, new, valid))

Uses (11):
  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=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/model.bend&name=Balanced
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/model.bend&name=observe
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&name=route
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&name=second
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&name=swap
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&name=swap_observed