Take the next step toward Perl mastery with advanced concepts that make coding easier, maintenance simpler, and execution faster. Mastering Perl isn't a collection of clever tricks, but a way of thinking about Perl programming for solving debugging, configuration, and many other real-world problems you'll encounter as a working programmer.The third in O'Reilly's series of landmark Perl tutorials (after Learning Perl and Intermediate Perl), this fully upated edition pulls everything together and helps you bend Perl to your will.Explore advanced regular expressions featuresAvoid common problems when writing secure programsProfile and benchmark Perl programs to see where they need workWrangle Perl code to make it more presentable and readableUnderstand how Perl keeps track of package variablesDefine subroutines on the flyJury-rig modules to fix code without editing the original sourceUse bit operations and bit vectors to store large data efficientlyLearn how to detect errors that Perl doesn't reportDive into logging, data persistence, and the magic of tied variables