Intermediate Perl

15.1. What use Is Doing So, just what does use do? How does the import list come into action? Perl interprets the use list as a particular form of BEGIN block wrapped around a require and a method call. For example, the following...

15.2. Importing with Exporter In Chapter 3, we skipped over that "and now magic happens" part where the import routine (defined by the module author) is supposed to take File::Basename::fileparse and somehow alias it into the caller's pac...

15.3. @EXPORT and @EXPORT_OK The import provided by Exporter examines the @EXPORT variable in the module's package to determine which variables it exports by default. For example, File::Basename might do something like: package File...

15.4. %EXPORT_TAGS We don't have to list every function or variable that we want to import, either. We can create shortcuts, or tags, to group them under a single name. In the import list, we precede the tag name with a colon. For example, the ...

15.5. Exporting in a Primarily OO Module As seen earlier, the normal means of using an object-oriented module is to call class methods and then methods against instances resulting from constructors of that class. This means that an OO module...

15.6. Custom Import Routines Let's use CGI.pm as an example of a custom import routine before we show you how to write your own. Not satisfied with the incredible flexibility of the Exporter's import routine, CGI.pm author Lincoln Stein c...

15.7. Exercises You can find the answers to these exercises in "Answers for Chapter 15" in the Appendix. 15.7.1. Exercise 1 [15 min] Take the Oogaboogoo library you created in Chapter 10, Exercise 1 and turn it into a module you can bring in w...