Day 14, "Scalar-Conversion and List-Manipulation Functions," describes
the library functions that convert values from one form to another and
the functions that work with lists and array variables.
By the end of Week 3, you'll know all the features and capabilities of Perl. It covers
the rest of the Perl library functions and describes some of the more esoteric concepts
of the language. Here's a summary of what you'll learn:
Day 15, "System Functions," describes the functions that manipulate the
Berkeley UNIX and UNIX System V environments.
Day 16, "Command-Line Options," describes the options you can supply with
Perl to control how your program runs.
Day 17, "System Variables," describes the built-in variables that are
included automatically as part of every Perl program.
Day 18, "References in Perl 5," describes the pointer and reference
features of Perl 5, including multi-dimensional arrays.
Day 19, "Object-Oriented Programming in Perl," describes the object-oriented
capabilities added to Perl 5. These enable you to hide information
and divide your program into individual file modules.
Day 20, "Miscellaneous Features of Perl," covers some of the more exotic
or obscure features of the language.
Day 21, "The Perl Debugger," shows you how to use the Perl debugger to
discover errors quickly.