10.7. ExerciseThe answers for all exercises can be found in Section A.9. 10.7.1. Exercise [45 min]Modify the RaceHorse class to get the previous standings from a DBM hash (keyed by the horse's name) when the horse is created, and update the standings when the horse is destroyed. For example, running this program four times: my $runner = RaceHorse->named("Billy Boy"); $runner->won; print $runner->name, " has standings ", $runner->standings, ".\n"; should show four additional wins. Make sure that a RaceHorse still does everything a normal Horse does otherwise. For simplicity, use four space-separated integers for the value in the DBM hash. Copyright © 2003 O'Reilly & Associates. All rights reserved. |
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