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);