src/Doc/ProgProve/MyList.thy
author wenzelm
Tue, 28 Aug 2012 18:57:32 +0200
changeset 48985 5386df44a037
parent 48947 doc-src/ProgProve/MyList.thy@7eee8b2d2099
permissions -rw-r--r--
renamed doc-src to src/Doc; renamed TutorialI to Tutorial;

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