+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
set "baseuri" "cic:/matita/tests/first/".
inductive nat : Set \def
| cons : A \to list A \to list A.
let rec list_len (A:Set) (l:list A) on l \def
- [\lambda x.nat]
- match (l:list A) with
+ match l with
[ nil \Rightarrow O
| (cons a tl) \Rightarrow S (list_len A tl)].