src/HOL/ex/StringEx.ML
author paulson
Fri, 11 Sep 1998 16:25:40 +0200
changeset 5479 5a5dfb0f0d7d
parent 5278 a903b66822e2
child 8035 84c5ce912b43
permissions -rw-r--r--
fixed PROOF FAILED


Goal "hd(''ABCD'') = CHR ''A''";
by (Simp_tac 1);
result();

Goal "hd(''ABCD'') ~= CHR ''B''";
by (Simp_tac 1);
result();

Goal "''ABCD'' ~= ''ABCX''";
by (Simp_tac 1);
result();

Goal "''ABCD'' = ''ABCD''";
by (Simp_tac 1);
result();

Goal "''ABCDEFGHIJKLMNOPQRSTUVWXYZ'' ~= ''ABCDEFGHIJKLMNOPQRSTUVWXY''";
by (Simp_tac 1);
result();