Ur/Web: tests/recBad.lac annotate

Checking for well-formed 'val rec'

author	Adam Chlipala <adamc@hcoop.net>
date	Thu, 28 Aug 2008 13:13:16 -0400
parents
children	fc6f04889bf2

rev	line source
adamc@238	1 datatype list a = Nil \| Cons of a * list a
adamc@238	2
adamc@238	3 val rec append : t ::: Type -> list t -> list t -> list t = fn t ::: Type => fn ls1 => fn ls2 =>
adamc@238	4 case ls1 of
adamc@238	5 Nil => ls2
adamc@238	6 \| Cons (h, t) => Cons (h, append t ls2)
adamc@238	7
adamc@238	8 (val rec ones : list int = Cons (1, ones))
adamc@238	9 val rec ones : unit -> list int = fn () => Cons (1, ones ())

Mercurial > urweb