law slice_take

lawful-bytes@0.1.1.0 · proof_fast_find.bend:772

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

772law slice_take:
773  for +xs: List<&2, U32>
774  for +l: Nat
775  for +f: Nat
776  for +n: Nat
777  for +h: {Nat.is_le(Nat.add(f, n), l) == True{} : Bool}
778  {D.slice(List.take(&2, U32, xs, l), f, n) == D.slice(xs, f, n) : List<&2, U32>}