law head_reverse

bend-mathlib@0.8.1.0 · list.bend:1800

import Base

1800# The head of the reverse is the last element.
1801law head_reverse:
1802  for -a: Quant
1803  for -A: Kind(a)
1804  for xs: List<a, A>
1805  {List.head(a, A, List.reverse(a, A, xs)) == List.last(a, A, xs) : Maybe<a, A>}