A slight simplification of optstring
The new "simpset" keyword in the "recdef" declaration
(* Title: HOLCF/Discrete0.thy
ID: $Id$
Author: Tobias Nipkow
Copyright 1997 TUM
Discrete CPOs
*)
Discrete0 = Cont +
datatype 'a discr = Discr 'a
instance discr :: (term)sq_ord
defs
less_discr_def "((op <<)::('a::term)discr=>'a discr=>bool) == op ="
end