Schwartz R. Intermediate Perl: Beyond The Basics of Learning Perl

2nd Edition. — O’Reilly Media, 2012. — 396 p. — ISBN10: 1449393098This book picks up right where Learning Perl leaves off. With Intermediate Perl, you’ll graduate from short scripts to much larger programs, using features that make Perl a general-purpose language. This gentle but thorough guide introduces you to modules, complex data structures, and object-oriented programming.Each chapter is small enough to be read in just an hour or two, ending with exercises to help you practice what you’ve learned. If you’re familiar with the material in Learning Perl and have the ambition to go further, Intermediate Perl will teach you most of the core Perl language concepts you need for writing robust programs on any platform.Topics include:Packages and namespaces.
References and scoping, including regular expression references.
Manipulating complex data structures.
Object-oriented programming.
Writing and using modules.
Testing Perl code.
Contributing to CPAN.