doc-src/TutorialI/Trie/Option2.thy
author nipkow
Wed, 19 Apr 2000 12:59:38 +0200
changeset 8749 2665170f104a
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child 8771 026f37a86ea7
permissions -rw-r--r--
Adding generated files
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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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(*>*)