law reverse_singleton
import bend-mathlib@0.8.1.0/list.bend as Listimport Base
387# Reversing a one-element list gives it back.
388law reverse_singleton:
389 for -a: Quant
390 for -A: Kind(a)
391 for -x: A
392 {List.reverse(a, A, [x]) == [x] : List<a, A>}