changeset 7246 | 33058867d6eb |
parent 7224 | e41e64476f9b |
child 7570 | a9391550eea1 |
--- a/src/HOL/List.ML Tue Aug 17 22:24:15 1999 +0200 +++ b/src/HOL/List.ML Wed Aug 18 10:27:57 1999 +0200 @@ -770,6 +770,7 @@ by (exhaust_tac "xs" 1); by Auto_tac; qed_spec_mp "take_all"; +Addsimps [take_all]; Goal "!xs. length xs <= n --> drop n xs = []"; by (induct_tac "n" 1); @@ -777,6 +778,7 @@ by (exhaust_tac "xs" 1); by Auto_tac; qed_spec_mp "drop_all"; +Addsimps [drop_all]; Goal "!xs. take n (xs @ ys) = (take n xs @ take (n - length xs) ys)"; by (induct_tac "n" 1);