Chapter 11. Link Checking

This chapter introduces some very important Perl features that we'll be using in the rest of the book. For one thing, it shows how to use references to create a multilevel data structure. It also shows how to download and install CPAN modules. Finally, it offers a brief introduction to object-oriented Perl to help you take advantage of the many object-oriented modules available from CPAN. Even if you don't think you need a link-checking program, you should still take a look at the concepts introduced in this chapter.