Perl 5 has evolved quite nicely lately, and I don't wait for Perl 6 (the biggest problem with Perl 6 is that "6" is bigger than "5"). While I haven't read this

Perl 5 has evolved quite nicely lately, and I don't wait for Perl 6 (the biggest problem with Perl 6 is that "6" is bigger than "5"). While I haven't read this book (only skimmed parts), this book is not affected by the language evolution. Of course, it doesn't follow 'modern Perl' practices, but mostly it wouldn't need to. It is more concerned about concepts that can be applied regardless of language.