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doc-src/Tutorial/Datatype/lookupempty.ML
author
wenzelm
Wed, 09 Jan 2002 17:42:49 +0100
changeset 12690
ac3fa7c05e5a
parent 9255
2ceb11a2e190
permissions
-rw-r--r--
* added \<euro> symbol; * HOL-Hyperreal is now a logic image; * isatool latex no longer depends on changed TEXINPUTS;
Goal "lookup (Trie None []) as = None";
by(case_tac "as" 1);
by(Auto_tac);