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doc-src/TutorialI/Trie/Option2.thy
author
wenzelm
Tue, 10 Oct 2000 23:44:44 +0200
changeset 10184
4a7a1091cf65
parent 8771
026f37a86ea7
permissions
-rw-r--r--
fully enclose "\isadigit{...}"; \<^foo> produces "\isactrlfoo ";
(*<*)
theory Option2 = Main:;
(*>*)
datatype 'a option = None | Some 'a;
(*<*)
end
(*>*)