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-- Debugging Perl explains how to best use the features of Perl to create functions and re-use existing code to develop applications that eliminate the problems before they start.
-- Unique approach in Perl market with no direct competitor.
-- 24x7 - Boxed elements that focus on specific coding techniques for writing applications that don't break
-- Design Tip - Logical or optimization technique for building solid code
-- Error Watch - Warnings and cautions against common or easy-to-make programming errors [via]