law drop_length

bend-mathlib@0.8.1.0 · list.bend:326

import Base

326# Dropping as many elements as the list has gives the empty list.
327law drop_length:
328  for -A: Data
329  for +xs: List<&2, A>
330  {List.drop(&2, A, xs, List.length(&2, A, xs)) == Nil{} : List<&2, A>}