changeset 56451 | 856492b0f755 |
parent 56420 | b266e7a86485 |
child 57804 | fcf966675478 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/Doc/Prog_Prove/MyList.thy Tue Apr 08 12:46:38 2014 +0200 @@ -0,0 +1,17 @@ +theory MyList +imports Main +begin + +datatype 'a list = Nil | Cons 'a "'a list" + +fun app :: "'a list => 'a list => 'a list" where +"app Nil ys = ys" | +"app (Cons x xs) ys = Cons x (app xs ys)" + +fun rev :: "'a list => 'a list" where +"rev Nil = Nil" | +"rev (Cons x xs) = app (rev xs) (Cons x Nil)" + +value "rev(Cons True (Cons False Nil))" + +end