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In this second part of a five-part series on templating tools, you'll learn about loops, arrays, hashes, and more. It is excerpted from chapter three of the book Advanced Perl Programming, Second Edition, written by Simon Cozens (O'Reilly; ISBN: 0596004567). Copyright © 2007 O'Reilly Media, Inc. All rights reserved. Used with permission from the publisher. Available from booksellers or direct from O'Reilly Media.

Thanks for stopping by for our final article on Perl lists and hashes. This marks our twelfth issue on the subject (at least until we get to some more advanced techniques later on) and in it, we will look at a few of the functions for manipulating two-dimensional lists, how to create lists with more than two dimensions, and finally, how to make a hash full of lists, which is really quite a handy tool.

You may have created your own templating system in Perl to meet certain project requirements, but did you know there is a better way? This article, the first in a five-part series, explores your options. It is excerpted from chapter three of Advanced Perl Programming, Second Edition, written by Simon Cozens (O'Reilly; ISBN: 0596004567). Copyright © 2007 O'Reilly Media, Inc. All rights reserved. Used with permission from the publisher. Available from booksellers or direct from O'Reilly Media.

In this tutorial we will look at working with numbers in Perl. We'll cover the basics, such as integers and floating points, and end with the more advanced topics, like converting strings to numbers. With Perl you don't need to be a math genius. These simple tips can help you be a virtual Einstein.

In this second part of a two-part series on debugging Perl, we will go beyond the author's favorite debugger and look at a number of alternative Perl debuggers. This article is excerpted from chapter four of the book Mastering Perl, written by Brian D Foy (O'Reilly; ISBN: 0596527241). Copyright © 2007 O'Reilly Media, Inc. All rights reserved. Used with permission from the publisher. Available from booksellers or direct from O'Reilly Media.

Every developer knows that debugging is one of the most important parts of coding. This two-part article focuses on Perl debuggers. It is excerpted from chapter four of Mastering Perl, written by Brian D Foy (O'Reilly; ISBN: 0596527241). Copyright © 2007 O'Reilly Media, Inc. All rights reserved. Used with permission from the publisher. Available from booksellers or direct from O'Reilly Media.

Welcome to the first part of what should be the final two articles in our series on working with hashes and lists in Perl. This makes our eleventh article in the series and in it, we will wrap up the intermediate ways of working with hashes and lists. We'll learn to add rows and columns to a two-dimensional list, replace them, create multi-dimensional lists, and write hashes and files to lists, then open and read from those same files over the next two articles.

Thanks for stopping by to read my tenth installment on working with hashes and lists in Perl. In our previous article we learned how to find out if a hash holds a specific value, does not hold a specific value, or holds any value whatsoever. We further learned to create our first two-dimensional array and then worked to better understand how exactly a two-dimensional array works. Which is where we pick up in this article.

Welcome to the ninth installment in our look at working with hashes and lists in Perl. In our previous article we learned how to add records to a hash, replace them, and delete the values inside of them. In this article we will learn how to check whether records reside within our hashes, write the data within a hash to a file, and create multidimensional lists.

Welcome to the eighth episode in our series on Perl Lists and Hashes. In this article we will discuss how to add a record to a hash, as well as how to remove a record from one. We will also cover how to check to see if a record already exists in our hash, how to write the data contained in one to a file, and quite possibly go over the basics of multidimensional lists.

Thanks for stopping by for this seventh part in the series on Perl Lists and Hashes. Here we will discuss working with a new way to store data known as a Hash. We'll cover the basics, such as how to create them, and how to locate data within them. You'll learn to add records, remove records, and much more. If there is time, we will also cover multidimensional lists.

Welcome to the sixth part of our series on Perl Lists. Here we will cover the remaining four List::Util subroutines: min(list), minstr(list), shuffle(list), and sum(list). We'll learn how to manipulate lists using these subroutine in various intended and unintended ways.

In this fifth part of our series on Lists, we will cover the List::Util module, which gives us seven handy-dandy subroutines with which to manipulate our lists. If we have time, we'll also cover multi-dimensional lists in more depth (we briefly covered them in an earlier article).

In this fourth part of our series on Lists, we will start off with the split() function and hopefully end by covering hashes. In our last article, we covered the splice() function, which we used to add, remove, and replace elements in a list. We then used it to create variables and arrays. We also worked with some operators to repeat a list and to create sequential lists.

In this conclusion to a four-part series on Perl and DBI, you will learn about SQL queries and DBI, using Perl and DBI with CGI, and more. This article is excerpted from chapter 15 of the book Beginning Perl (Apress; ISBN: 159059391X).