doc-src/TutorialI/Trie/Option2.thy
author berghofe
Tue, 07 Nov 2000 17:50:21 +0100
changeset 10415 e6d7b77a0574
parent 8771 026f37a86ea7
permissions -rw-r--r--
moved rewriting functions from Drule to MetaSimplifier

(*<*)
theory Option2 = Main:;
(*>*)

datatype 'a option = None | Some 'a;
(*<*)
end
(*>*)