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Did you think it was easy Suppose you needed to open a connection to a remote host from within your perl program. One thing you would probably think of doing at first is the following open TELNET telnet hostname" ; print TELNET username ; print TELNET password ; ... Unfortunately if you try this you ll find...

An oversimplified introduction to sockets Sockets are a mechanism that allows programs to communicate either on the same machine or across a network. The way it works is pretty simple Each machine on a network is identified by some address. In this tutorial we will talk about tcp ip networking so by network address we mean an IP address. like 192.168.4.4...

A very common task for a cgi script is to be able to inform a set of users with data generated by itself or other programs cgi s or not. For example you might be one of the web designers who have joined one of the myriad of free counter programs on the internet that email you with nice statistics and reports about your web pages traffic. Systems...

What is streaming By streaming we refer to the decoding of a file consurrently with its download i.e. rendering the contents of the file as they become available without having to stand by for the entire file to be downloaded. Streaming is very useful in applications that involve live content such as readio transmissions or newscasts or media...

The problem I O requests such as read and write are blocking requests. Suppose you have a line in a program thad get STDIN from a terminal like the following input STDIN> ; What will happen here is that the program s execution will block until there a line of input is available i.e. the user types something followed by a newline. In many...

by Kip Hampton April 18 2001 Introduction A recent flurry of questions to the Perl-XML mailing list points to the need for a document that gives new users a quick how-to overview of the various Perl XML modules. For the next few months I will be devoting this column solely to that purpose. The XML modules available from CPAN can be divided into three...

Sorting Techniques   By perlfect.com
Sorting is a commonly needed operation in all kinds of programs. Luckily for us perl programmers perl provides a very simple yet extremely powerful mechanism to accomplish any sort you might think of. This article is about teaching the novice programmer how to sort lists of things while showing to the more experienced folks certain techniques and...

Using XML Modules in Perl   By oreillynet.com
by Nate Patwardhan coauthor of Perl in a Nutshell 2nd Edition 07 09 2002 Introduction For various reasons updating Perl in a Nutshell was a challenge. Given the new material that crept into the source kit between Perl 5.005 and the upcoming release of Perl 5.8 as well as things that demanded to be added or updated in the text I knew that there...

by Erik T. Ray coauthor of Perl and XML 06 20 2002 Every day thousands if not millions of people view and post messages on Web forums. These forums are public like billboards but organized like email into threads and sorted. My friends and I have been using them for years to keep in touch. Over time forums have become quite ornate with polished...

by Randal L. Schwartz and Apple Developer Connection 09 24 2002 Prior to Mac OS X Perl scripters were forced to telnet to a shell prompt on a remote Unix box to get full access to their favorite language. But now with its BSD underpinnings and a terminal window Mac OS X has the same version of Perl you d find on any Unix system. Of course Apple s...

Getting Loopy with Python and Perl   By oreillynet.com
by Aahz 06 27 2002 This article is based in part on my O Reilly Open Source Convention 2002 tutorial Python for Perl Programmers However this article includes more Perl and Python comparison than I ve included in the tutorial. My tutorial targets experienced programmers of all sorts with the non-Python examples drawn from Perl. In...

Perl 6 and the Parrot Project   By developer.com
By Allison Randal Dan Sugalski Leopold Tö tsch Go to page 1 2 3 Next Conceptual integrity in turn dictates that the design must proceed from one mind or from a very small number of agreeing resonant minds. ndash; Frederick Brooks Jr. The Mythical Man Month Perl 6 is the next major version of Perl. It& acute; s a complete rewrite...

By Patrick Delin April 11 2002 Intended Audience Overview Learning Objectives Definitions Background Information Prerequisites PCRE Syntax How the Scripts Work Script Overview E-mail Validation Scripts About The Author Intended Audience This tutorial is intended for the PHP programmer interested in using Perl Compatible Regular Expressions or PCRE...

By Jayesh Jain Introduction With the introduction of version 4.2 PHP has started supporting a new SAPI Server Application Programming Interface called CLI Command Line Interface . This facility was introduced to help developers create small shell applications scripts with PHP. So now you can kiss Perl goodbye forever. The CLI SAPI was released...

CGI Environmental Variables   By perlfect.com
One of the methods that the web server uses to pass information to a cgi script is through environmental variables. These are created and assigned appropriate values within the environment that the server spawns for the cgi script. They can be accessed as any other environmental variable like with getenv in C or ENV VARIABLE_NAME in Perl ....

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