PERL HELP, PERL PROGRAMMING, PERL CODE, PERL TUTORIALS, PERL DEVELOPMENT

In the last article, I talked about the need to work at the bit level in Perl and in other languages. In order to understand bits, we first took a look at how binary numbers are represented in Perl, and then we took a look at two bitwise operators, AND and OR. In looking at the operators, we looked at their most common uses in programming. We also began to look at an algorithm for finding prime numbers, but we stopped upon seeing that there is no easy implementation, at least not without a knowledge of bits.

When you program, you're usually doing it at some distance from the bits and bytes that your computer understands. There never seems to be a need to think about bits. But believe it or not, learning about bits can be to your advantage for certain programming purposes. Perl provides operators for working with bits that let you leverage this knowledge.

In programming, data manipulation is an everyday task. Programmers must be able to take raw data and perform some operation, or a set of operations, on that data to modify it. However, presenting data is also very important, both in programming and in other tasks. This article will cover one of the ways you can present data in Perl

In the last article, we took a look at command line options and how we could read them in Perl using the Getopt::Std module. For many simple applications, that article covers all that you need to make use of command line options. When you need more command line options, you can make use of the Getopt::Long module, which is the subject of this article.

Unlike command line arguments, command line options can sometimes be a bit difficult to read; nevertheless, they can prove to be quite useful. This article explains what a command line option is, why you would use one, and how to process them in Perl. This article is the first of two parts.

There are a number of ways you can retrieve information from the web. You can access it directly via a browser, or you can write a script that gets the information for you and delivers it in a form you can use. The LWP library for Perl can help you with the latter. Keep reading for a closer look.

In this conclusion to a five-part series on templating tools, you'll learn about filters, plugins, 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.

In this fourth part of a five-part series on templating tools, you'll learn about Perl blocks, helper components, 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.

In this third part of a five-part series on templating tools, you'll learn how to write a simple RSS aggregator, 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.

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.