src/CCL/ex/stream.thy
author clasohm
Thu Sep 16 12:20:38 1993 +0200 (1993-09-16)
changeset 0 a5a9c433f639
child 290 37d580c16af5
permissions -rw-r--r--
Initial revision
     1 (*  Title: 	CCL/ex/stream.thy
     2     ID:         $Id$
     3     Author: 	Martin Coen, Cambridge University Computer Laboratory
     4     Copyright   1993  University of Cambridge
     5 
     6 Programs defined over streams.
     7 *)
     8 
     9 Stream = List + 
    10 
    11 consts
    12 
    13   iter1,iter2   ::  "[i=>i,i]=>i"
    14 
    15 rules 
    16 
    17   iter1_def   "iter1(f,a) == letrec iter x be x.iter(f(x)) in iter(a)"
    18   iter2_def   "iter2(f,a) == letrec iter x be x.map(f,iter(x)) in iter(a)"
    19 
    20 end