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| author |  Adam Chlipala <adamc@hcoop.net> | 2008-08-09 16:48:32 -0400 |
|---|---|---|
| committer | Adam Chlipala <adamc@hcoop.net> | 2008-08-09 16:48:32 -0400 |
| commit | 3e59b823392701f538f972d689d04b0182696e51 (patch) | |
| tree | 5a4f935084c734ee1634b76abe5d2d5f1abf8bcc /tests | |
| parent | e699687ba2ff0cc2c7c185c4d99669f77093473b (diff) | |
Lists all the way through
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/list.lac | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/list.lac b/tests/list.lac new file mode 100644 index 00000000..a4602d0e --- /dev/null +++ b/tests/list.lac @@ -0,0 +1,19 @@ +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> |