src/HOL/ex/Unification.thy
changeset 58249 180f1b3508ed
parent 56790 f54097170704
child 58310 91ea607a34d8
     1.1 --- a/src/HOL/ex/Unification.thy	Tue Sep 09 17:51:07 2014 +0200
     1.2 +++ b/src/HOL/ex/Unification.thy	Tue Sep 09 20:51:36 2014 +0200
     1.3 @@ -32,7 +32,7 @@
     1.4  
     1.5  text {* Binary trees with leaves that are constants or variables. *}
     1.6  
     1.7 -datatype 'a trm = 
     1.8 +datatype_new 'a trm = 
     1.9    Var 'a 
    1.10    | Const 'a
    1.11    | Comb "'a trm" "'a trm" (infix "\<cdot>" 60)