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doc-src/Tutorial/Datatype/lookupempty.ML
author
paulson
Thu, 20 Feb 2003 11:09:48 +0100
changeset 13824
e4d8dea6dfc2
parent 9255
2ceb11a2e190
permissions
-rw-r--r--
minor updates to pre-2002 release
Goal "lookup (Trie None []) as = None";
by(case_tac "as" 1);
by(Auto_tac);