law drop_length_sym

bend-mathlib@0.8.1.0 · list.bend:2345

import Base

2345# Dropping as many elements as the list has gives the empty list, reversed to rewrite toward the simple side.
2346law drop_length_sym:
2347  for -A: Data
2348  for +xs: List<&2, A>
2349  {Nil{} == List.drop(&2, A, xs, List.length(&2, A, xs)) : List<&2, A>}