src/ZF/ex/Data.thy
author lcp
Tue, 07 Mar 1995 13:37:48 +0100
changeset 935 a94ef3eed456
parent 515 abcc438e7c27
child 1401 0c439768f45c
permissions -rw-r--r--
Changed Univ to Datatype in parents

(*  Title: 	ZF/ex/Data.thy
    ID:         $Id$
    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
    Copyright   1994  University of Cambridge

Sample datatype definition.  
It has four contructors, of arities 0-3, and two parameters A and B.
*)

Data = Datatype +

consts
  data :: "[i,i] => i"

datatype
  "data(A,B)" = Con0
              | Con1 ("a: A")
              | Con2 ("a: A", "b: B")
              | Con3 ("a: A", "b: B", "d: data(A,B)")

end