src/HOL/Option.thy
changeset 58310 91ea607a34d8
parent 58154 47c3c7019b97
child 58889 5b7a9633cfa8
     1.1 --- a/src/HOL/Option.thy	Thu Sep 11 19:26:59 2014 +0200
     1.2 +++ b/src/HOL/Option.thy	Thu Sep 11 19:32:36 2014 +0200
     1.3 @@ -8,7 +8,7 @@
     1.4  imports BNF_Least_Fixpoint Finite_Set
     1.5  begin
     1.6  
     1.7 -datatype_new 'a option =
     1.8 +datatype 'a option =
     1.9      None
    1.10    | Some (the: 'a)
    1.11