The Perl Review 2.1 The Perl Review Volume 2, Issue 1 Winter 2005 Perl Mongers News 5 Editor / Publisher: brian d foy Perl Foundation News 5 Design: Eric Maki PerlWar 6 Columnists: David H. Adler Andy Lester The Seven Sins of Alberto Simões Perl OO Programming 10 Copy Editors: Mike Fragassi Perl News 16 Thomas Mackenzie Haskell for Perlers 18 www.theperlreview.com [email protected] Hash Anti-Patterns 26 The Perl Review Book Review 29 5250 N. Broadway Suite 157 Chicago, IL, 60640 Book Review 30 The Perl Review (ISSN 1553-667X) is published quarterly by brian d foy. Publication Office: 5301 N. Kenmore Ave #2, Chicago, IL 60640. US subscriber rate is $16 per year (4 issues). Foreign subscriber rate is $30 US per year (4 issues). Single copies are $5 in the US, $8 elsewhere. Postmaster: Send address changes to The Perl Review, 5250 N. Broadway Suite 157, Chicago, IL, 60640. Subscribers: Subscribe online or send a check or money order drawn in US funds to the above address. Advertisers: Send email to [email protected] for rates and information. On the Cover Long before people had computers, they'd sit at home and stitch their programs into cloth. It was a simpler time when Copyright © 2005 The Perl Review people were more careful with their code (always using All rights reserved. Individual articles may strictures) since the code was much harder to fix once they be available under other licenses. had finished the program. Programmers faced other difficulties, such as running out of the right color thread for their syntax Printed in Chicago, IL, USA. coloring. Stacey and Jan Tappan pair-programmed this simple JACH in a single evening. 2 www.theperlreview.com Winter 2005.