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doc-src/TutorialI/Trie/Option2.thy
author
wenzelm
Wed, 30 Aug 2000 17:54:05 +0200
changeset 9749
36ddd544a18d
parent 8771
026f37a86ea7
permissions
-rw-r--r--
token trans: removed \mbox to achieve proper italic correction;
(*<*)
theory Option2 = Main:;
(*>*)
datatype 'a option = None | Some 'a;
(*<*)
end
(*>*)