doc-src/TutorialI/Trie/Option2.thy
author wenzelm
Mon, 23 Oct 2000 11:14:00 +0200
changeset 10289 475ea668c67d
parent 8771 026f37a86ea7
permissions -rw-r--r--
tuned deps;

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

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