author | nipkow |
Tue, 05 Nov 2019 19:15:00 +0100 | |
changeset 71041 | fdb6c5034c24 |
parent 57804 | fcf966675478 |
permissions | -rw-r--r-- |
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))" (* a comment *) end