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doc-src/TutorialI/Trie/Option2.thy
author wenzelm
Mon, 11 Sep 2000 17:59:53 +0200
changeset 9923 fe13743ffc8b
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permissions -rw-r--r--
renamed "rulify" to "rulified"; renamed "less_induct" to "nat_less_induct";
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(*<*)
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theory Option2 = Main:;
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(*>*)
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datatype 'a option = None | Some 'a;








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(*<*)













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end













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isabelle