Mercurial > urweb
view tests/list.ur @ 695:500e93aa436f
sleep and better Scriptcheck
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 04 Apr 2009 15:56:47 -0400 |
parents | 71bafe66dbe1 |
children | fa2019a63ea4 |
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datatype list a = Nil | Cons of a * list a val isNil = fn t ::: Type => fn ls : list t => case ls of Nil => True | _ => False val show = fn b => if b then "True" else "False" val rec delist : list string -> xml body [] [] = fn x => case x of Nil => <body>Nil</body> | Cons (h, t) => <body>{cdata h} :: {delist t}</body> val main : unit -> page = fn () => <html><body> {cdata (show (isNil (Nil : list bool)))}, {cdata (show (isNil (Cons (1, Nil))))}, {cdata (show (isNil (Cons ("A", Cons ("B", Nil)))))} <p>{delist (Cons ("X", Cons ("Y", Cons ("Z", Nil))))}</p> </body></html>