law take_length

bend-mathlib@0.8.1.0 · list.bend:312

import Base

312# Taking as many elements as the list has gives the list back.
313law take_length:
314  for -A: Data
315  for +xs: List<&2, A>
316  {List.take(&2, A, xs, List.length(&2, A, xs)) == xs : List<&2, A>}