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doc-src/TutorialI/Trie/Option2.thy
author
wenzelm
Tue, 12 Sep 2000 22:13:23 +0200
changeset 9941
fe05af7ec816
parent 8771
026f37a86ea7
permissions
-rw-r--r--
renamed atts: rulify to rule_format, elimify to elim_format;
(*<*)
theory Option2 = Main:;
(*>*)
datatype 'a option = None | Some 'a;
(*<*)
end
(*>*)