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Learning Perl Objects, References & Modules

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Beta Chapter 3: Introduction to References

Following the successful format of Learning Perl, each chapter in the book is designed to be small enough to be read in just an hour or two, ending with a series of exercises to help you practice what you've learned. To use the book, you just need to be familiar with the material in Learning Perl and have ambition to go further.

Perl is a different language to different people. It is a quick scripting tool for some, and a fully-featured object-oriented language for others. It is used for everything from performing quick global replacements on text files, to crunching huge, complex sets of scientific data that take weeks to process. Perl is what you make of it. But regardless of what you use Perl for, this book helps you do it more effectively, efficiently, and elegantly.

Learning Perl Objects, References & Modules is about learning to use Perl as a programming language, and not just a scripting language. This is the book that separates the Perl dabbler from the Perl programmer.

Excerpt Contents

  • Beta Chapter 3: Introduction to References
  • Performing the Same Task on Many Arrays
  • Taking a Reference to an Array
  • Dereferencing the Array Reference
  • Dropping Those Braces
  • Modifying the Array
  • Nested Data Structures
  • Simplifying Nested Element References with Arrows
  • References to Hashes
  • Exercises

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Created: March 27, 2003
Revised: July 15, 2003

URL: http://webreference.com/programming/perl/learning/chap3