Chapter 2: Matching and Substitution in Perl. Now that we have the basics of Perl down, we need to tackle some key issues: Input/Output and processing command-line arguments. Setting up a CGI script can be extremely frustrating. Summary: in this tutorial, you will learn about the Perl subroutine, which is also known as a function or user-defined function in Perl. The obvious example is a clock application, but other examples might be. Watch Queue Queue. From the Help > Tutorials menu, click Perl Tutorial, or open the perltutorial. and Tom Christiansen. gtk2-perl is the collective name for a set of Perl bindings for Gtk+ versions 2. Sengupta, Department of Computer Science Engineering, IIT Kharagpur. Win32::GUI Tutorial - Part 3 What is a Dialog Box? So far, in this tutorial, we have been creating our main window using the Win32::GUI::Window->new() constructor. Name Type Perl Covers Size Lang Status Last Updated Popularity; Programming Perl 4th i [This is a rather new edition of the book, but for a number of issues with its content it cannot be recommended for newcomers. Check whether perl is already installed or not on your system. The hash variable name begins with the % symbol. Introduction. From perl source code, you can find more information about current perl releases. 0 Tutorial Damian Conway 28 February 2001 • extract_tagged takes a string, plus four arguments specifying the type of tag being parsed,. The Perl 6 community provides a wide range of resources in different formats. js, Weka, Solidity, Org. If statements are conditional statements used to test whether or not some condition is met and then continue executing the script. There is an even better way. We will go into every detail of each topic in the next tutorial. Modern Perl, the book, explains Perl programming from novice to expert. Its syntax is transparent so the source comments read just as easily as the generated documentation. The most up to date version of this and all the other Perl documentation can be found online at perldoc. Learn to program in Perl, the flexible, general-purpose programming language. Using double-quoted strings, the interaction between PHP's and PCRE's interpretations of which bits of the string are escape sequences can get messy. If you'd like to start implementing best practices, for yourself or your team, then Perl::Critic is the best place to start. Python Programming tutorials from beginner to advanced on a massive variety of topics. A default constructor allows the setting of attributes for the created object:. Click on If you’re just getting started with Perl, this is the book you want—whether you’re a programmer. When you type in google. The first line of every PERL script is a commented line directed toward the PERL interpreter. These plugins will. Perl Basics This discussion provides a summary of basic Perl features, organized in categories consistent with the structure of the language. They are scalar variables, so they start with ($) sign. In general, Perl is easier to learn and faster to code in than the more structured C and C++ languages. The following little program waits for the user to enter a string and hit the return key, then tells the user what he entered. A Regular Expression (or Regex) is a pattern (or filter) that describes a set of strings that matches the pattern. A string can be defined within a single quote (') or double quote ("). Theano, Flutter, KNime, Mean. This tutorial is a beginners handbook for new Linux users / Sys admins and school students studying Linux or computer science. Perl Pointer It is also possible to install Perl modules without PPM using the CPAN shell. org - Official documentation for the Perl programming language. This is the first part of the Perl tutorial. From perl source code, you can find more information about current perl releases. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the Perl programming language. Discover some of the amazing things you can do with Perl 5, including downloading text and images from the Internet (just like Zuckerberg in The Social Network), reformatting data, importing and exporting data to and from databases, sysadmin-type tasks like renaming or moving files, fixing even huge amounts of data quickly and even creating web CGI scripts. Just to name a few common tasks. This line is generally the same from one instal of PERL to the next, it might look something like this if you were running it on linux:. But now Perl is used for a variety of purpose including web development, GUI development, system administration and many more. Want to get notified when a new release is published? The Perl Weekly newsletter includes announcements of DWIM Perl and major Perl projects as they are made available by their developers. It is often used for developing common gateway interface programs because it has good text manipulation facilities, although it also handles binary files. Welcome to the learn-perl. In this model each thread runs in its own Perl interpreter, and any data sharing between threads must be explicit. POE is a Perl framework for reactive systems, cooperative multitasking, and network applications. '? Check out these best online Perl courses and tutorials recommended by the programming community. In part one, we will build a simple yet fully functional implementation in less than 100 lines of code using our operating system, comma delimited files, a dash of ingenuity, and lots of duct tape. You will find tutorials, screencasts, code samples and exercises that will help you throughout your Perl 6 journey. Have a look at the perlrun man page, specifically the -n option. We will go into every detail of each topic in the next tutorial. Introduction. This tutorial takes only an introductory look at Perl. Perl was created by Larry Wall in 1987, based on his earlier Unix system administrative tool called awk. CGI, Manipulación de Imagenes, Tiempo/Fecha, Windows, Aprender Perl y mucho más. Learning Perl'. This page provides a basic overview of correct YAML syntax, which is how Ansible playbooks (our configuration management language) are expressed. Hi Friends, Welcome to the exciting world of Perl Programming Language. If you are new to Perl, this tutorial is an excellent start. Each statement in Perl must end on a semicolon. Modern Perl we recommend at least Perl 5. A basic introduction to using the Gtk3 toolkit with the Perl bindings. You'll learn how to use CPAN and several specific CPAN modules. It has very wide applications and is popular for its text processing features. This section provides a tutorial example on how to run Perl scripts with ActivePerl on Windows systems. PowerGREP's regular expression engine is fully compatible with popular regex flavors such as those used by Perl, Java and the. print "Hello, World!\n"; Open a text editor, and type in the above program. See the CPAN FAQ for more information. org, a friendly and active Linux Community. kpf_ file from the samples/perltutorials_ subdirectory of Komodo's user data directory. The goal of this course is to provide you with the basic knowledge you need to write effective scripts in the Perl language. "Rakudo" is short for "Rakuda-dō" (with a long 'o'; 駱駝道), which is Japanese for "Way of the Camel". Want to get notified when a new release is published? The Perl Weekly newsletter includes announcements of DWIM Perl and major Perl projects as they are made available by their developers. Perl's design philosophy is expressed in the commonly cited motto "there's more than one way to do it". This is a simple perl program that prints Hello World!! on the screen. EPIC - Perl Editor and IDE for Eclipse EPIC is an open source Perl IDE (including editor and debugger) based on the Eclipse platform, compatible with Windows, Linux and Mac OS X. r/perl: The Perl Programming Language, including both Perl 5 and Perl 6. This article shows how to write. Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages. Let’s get started by creating a simple database in MySQL named perlmysqldb for the demonstration. …Developed in 1987 by Larry Wall…as a more practical alternative to shell scripting,…Perl borrows features…from other Unix utilities like sed and awk,…as well as from the C programming language. Strings are an essential part of the Perl language. Lists and Hashes 77 As before, perl doesn't automatically put spaces between list elements for us when it prints them out, it just prints them as it sees them. Libxml is a C language library implementing functions for reading, creating and manipulating XML data. Graphical User Interfaces (or "GUIs") are rich, graphical programs and applications that are displayed on the screen using windows, menus, buttons, input boxes, list boxes and other controls. Tutorial 2: PerlHoo, Part I: This is part one of a three part series to build a complete Yahoo-like Web directory. To finish this Perl hash tutorial, here's the source code for a complete Perl script where I first create a Perl hash, and then I loop through all the keys in the Perl hash, and then print each key and value that are contained in the hash:. Welcome to the learn-c. Perl/Tk (also known as pTk) is a collection of modules and code that attempts to wed the easily configured Tk 8 widget toolkit to the powerful lexigraphic, dynamic memory, I/O, and object-oriented capabilities of Perl 5. It is also included with the Oracle 10g and Oracle 11g database server. r/perl: The Perl Programming Language, including both Perl 5 and Perl 6. With the top Perl packages precompiled, and a range of commercial support options, ActivePerl lets your team focus on productivity with Perl that “just works”. In order to change a list, you need to store it in an array variable. Lecture Series on Internet Tecnologies by Prof. Regular Expressions. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Welcome to LinuxQuestions. Name Type Perl Covers Size Lang Status Last Updated Popularity; Programming Perl 4th i [This is a rather new edition of the book, but for a number of issues with its content it cannot be recommended for newcomers. A complete Perl hash script. Multiple worksheets can be added to a workbook and formatting can be applied to cells. W3Schools is optimized for learning, testing, and training. The Perl for MS Windows, free of charge! Perl is a programming language suitable for writing simple scripts as well as complex applications - see https://www. Perl 6 hands-on tutorial A small introduction to a big language Jonathan Worthington c Edument AB November 21, 2015. Regular Expression Tutorial In this tutorial, I will teach you all you need to know to be able to craft powerful time-saving regular expressions. Perl 6 rules are the regular expression, string matching and general-purpose parsing facility of Perl 6, and are a core part of the language. They are scalar variables, so they start with ($) sign. This is the product of the first slicing with Perlotine. The Perl package is in /usr/bin and is an older version (5. Now that we have the basics of Perl down, we need to tackle some key issues: Input/Output and processing command-line arguments. Perl tutorial provides basic and advanced concepts of Perl. Most clients of regular expressions will use the facilities of package regexp (such as Compile and Match) instead of this package. Tutorial 2: PerlHoo, Part I: This is part one of a three part series to build a complete Yahoo-like Web directory. His Java tutorial. org - Official documentation for the Perl programming language. Perl is an interpreted, not compiled, language. ; either the entry doesn't exist in the language, and please tell so. Welcome Welcome to the learn-perl. To finish this Perl hash tutorial, here's the source code for a complete Perl script where I first create a Perl hash, and then I loop through all the keys in the Perl hash, and then print each key and value that are contained in the hash:. ; Flexible - PSGI support, plugins and modular design allow for strong scalability. Perl is famous for processing text files via regular expressions. Please note that via the (?C…) callout syntax, PCRE aims to provide similar functionality to Perl's "code capsules". Perl; Network / Client 6: DNS 1: FTP 5: gethostbyaddr 2: gethostbyname 2: gethostent 1: getnetent 1. Welcome to LinuxQuestions. Getting Started. The first line of every PERL script is a commented line directed toward the PERL interpreter. Perl, which stands for Practical Extraction and Report Language, is an interpreted high-level programming language developed by Larry Wall. Perl was created by Larry Wall in 1987, based on his earlier Unix system administrative tool called awk. I put Wikipedia, but you can change. Thus far, we have learned about literal characters, character classes, and the dot. I help by introducing Test Automation, Continuous Integration, Continuous Deployment, Containerization (Vagrant, Docker), Cloudification (GCP, AWS), and other Agile and DevOps practices. Regular Expressions and String Manipulation. In this article, learn some of the theory behind dealing with legacy code, including what not to do. For those of you who are interested in learning some real basics of perl, the following sample scripts that I wrote are particularly interesting from the viewpoint of learning perl. Variables and Types Basic syntax: The hash (#) sign starts a comment. Existing developers / system administrators. This is a project started by me (Bernard Chan) in 2001 with the objective of creating a high-quality Perl tutorial targeted at beginners. Marshall 1999 HTML PERL NOTES Contents Introduction to Perl What is Perl? Origins Similar to C? Cost and Licensing. Regular expressions are very powerful tools for matching, searching, and replacing text. Dead Simple - Intuitive, minimalist and very expressive syntax. Perl Training and Tutorials. The following materials can be found in the State Lab Dropbox in the Perl Readings folder. Steps to creating a successful Perl CGI script. To refer to a single pair of a hash, the variable name must start with a $ followed by the "key" of the pair in curly brackets ({}). The Perl 6 Programming Language. Small changes made to the plain text or salt will have a large change in digest. EPIC is a set of plugins that turn Eclipse into a full-featured Perl IDE. Strings are an essential part of the Perl language. 1, several features added in newer versions are essential to modern development. Opening Files Open the Perl Tutorial Project. Perl tutorials and training course for beginner Perl programmers. pl #!/usr/local/bin/perl print "This is a test \n". mod_perl documentation: This section documents the various configuration options available for Apache and mod_perl, as well as the Perl startup files, and more esoteric possibilites such as configuring Apache with Perl. Installare Perl, stampare Hello World, Rete di salvataggio (use strict, use warnings) Editor, IDE e ambienti di sviluppo per il Perl. Perl tutorial. For more details on NPTEL visit http:. Follow these instructions, but before you start read them through once, then begin. Given Perl's natural fit for web applications development, it's no surprise that Perl is also a natural choice for web services development. Hi, my name is Camelia. A series of Perl tutorials for new to advanced programmers. Perl tutorial provides basic and advanced concepts of Perl. A package. Q&A Workshop Quiz Exercises Week 1 Week 1 in Review Week 2 Week 2 at a Glance Where You're Going Day 8 More Control Structures Using Single-Line Conditional Statements. Some Simple Perl Scripts. They also provide a number of code samples and examples, so that you can get a better “feel” for the language. The module is based on the Perl Best Practices book by Damien Conway and does a fairly good job implementing the suggestions made therein. The SQLite Ruby tutorial is a SQLite programming tutorial for the Ruby language. The technology skills platform that provides web development, IT certification and ondemand training that helps your career and your business move forward with the right technology and the right skills. The foreach loop is a control structure that's tailor-made to process Perl lists and hashes. A series of Perl tutorials for new to advanced programmers. It's a language that is available free over the Web, and it's used for a variety of things, from writing CGI scripts to assisting. Watch Queue Queue. Regular Expression Tutorial In this tutorial, I will teach you all you need to know to be able to craft powerful time-saving regular expressions. This includes modules installed from CPAN. org free interactive C tutorial. The Perl Maven tutorial will teach you the basics of the Perl programming language. Re-format the sequences to show codons (10 codons per line) in the output file. Since Perl's pattern-matching constructs have exceeded the capabilities of formal regular expressions for some time, Perl 6 documentation refers to them exclusively as regexes, distancing the term from the formal definition. Perl is an immensely popular scripting language that combines the best features of C, key UNIX utilities and a powerful use of regular expressions. When you finish reading this book, you will have learned why Perl is growing rapidly in popularity: It is powerful enough to perform many useful, sophisticated programming tasks, yet it is easy to learn and use. Interactive Perl tutorials. YAML Syntax¶. PERL - Array Variables. We have previously covered how to install Nagios monitoring server on Ubuntu 12. Walk through every aspect of programming in Perl from beginner tutorials to practical tips. Having a webhost which. - [Voiceover] Hello World is a very simple,…complete program commonly used…to demonstrate the syntax of a language…or to test a new development environment. Lists and Hashes 77 As before, perl doesn't automatically put spaces between list elements for us when it prints them out, it just prints them as it sees them. It’s a powerful, underused feature even for people who use Perl regularly. To finish this Perl hash tutorial, here's the source code for a complete Perl script where I first create a Perl hash, and then I loop through all the keys in the Perl hash, and then print each key and value that are contained in the hash:. Perl is certainly not dead, but it does face an adoption challenge. So you just need to. perl - mysql query. A module is a named container for a group of variables and subroutines which can be loaded into your program. Introduction to Perl Programming (presentation by Gregory Garretson, 12-06-04) Slide 9 Programming languages vs. Main; Basics; Syntax; License; Dingus; Download. - [Voiceover] Perl is the original…modern scripting language. If you are struggling, take a break, or reread the material. If you notice any mistakes in the answers please send an email to the address shown at the bottom of the page. "Rakudo" is short for "Rakuda-dō" (with a long 'o'; 駱駝道), which is Japanese for "Way of the Camel". mod_perl documentation: mod_perl related tutorials, teaching you things not only about mod_perl, but also about any related topics of great interest to mod_perl programmers. Perl 6 is a sister language, part of the Perl family, not intended as a replacement for Perl 5, but as its own thing - libraries exist to allow you to call Perl 5 code from Perl 6 programs and vice versa. Cambridge: O'Reilly & Associates, Inc. The Perl for MS Windows, free of charge! Perl is a programming language suitable for writing simple scripts as well as complex applications - see https://www. POE is a Perl framework for reactive systems, cooperative multitasking, and network applications. To refer to a single pair of a hash, the variable name must start with a $ followed by the "key" of the pair in curly brackets ({}). The foreach loop is a control structure that's tailor-made to process Perl lists and hashes. The official home of the Python Programming Language. Welcome to the Perl 5 Tutorial. Installation 3. The first step in learning to program is to teach the computer to say hello. The Perl regular expression syntax is based on that used by the programming language Perl. Step into any Perl tutorial in our library to start learning Perl at your own pace, whether youre starting at the beginning or an experienced programmer thats decided to migrate to Perl. Perl Scripting 1. What is the best IDE for Perl 5? Will Perl 6 kill Perl 5? Or will Perl 5 always be alive?. NAME; DESCRIPTION; Part 1: The basics; Simple word matching; Using character classes; Matching this or that; Grouping things and hierarchical matching. Introduction. Data Files 6. If you are looking for a list of recommended modules for many day-to-day tasks, look at Task::Kensho. Opening Files Open the Perl Tutorial Project. Assuming all has gone to plan, you can now create your first Perl script. From perl you activate the interface with the statement use DBI; After that you can connect to multiple MySQL database servers and send multiple queries to any of them via a simple object oriented interface. Read a fasta file that contain protein-coding sequences. PNG Output 11. A Perl hash variable stores a set of key/values pairs. Breakpoints (continue, step over, step in, step out); Function breakpoints (for now functions have to be loaded at launch). Perl XML::LibXML by Example¶. We’re going to show you how you can open files in Perl in this basic tutorial with the open function. Database programming with Perl - how to contribute. Its full form is "Practical Extraction and Reporting Language" Larry Wall created Perl in 1987. com over the internet and fetches the webpage. Download and install Perl with ActivePerl, precompiled distributions for Perl 5. You'll learn to do something similar — but slightly more advanced — to show just how easy it is to get up and running with Perl. This argument takes an optional suffix to append to the original files. Opening Files Open the Perl Tutorial Project. This creates a directory Unix_and_Perl_course that contains the tutorial files. With the top Perl packages precompiled, and a range of commercial support options, ActivePerl lets your team focus on productivity with Perl that “just works”. Perl 6 intends to carry forward the high ideals of the Perl community. Perl is a general-purpose programming language originally developed for text manipulation and now used for a wide range of tasks including system administration, web development, network programming, GUI development, and more. YAML Syntax¶. Download from here: dwimperl-5. Chapter 1: Introduction. Summary: in this tutorial, we will introduce you to Perl variable and also discuss the variable scope and variable interpolation. Perl examples (example source code) Organized by topic. '? Check out these best online Perl courses and tutorials recommended by the programming community. This section provides a tutorial example on how to run Perl scripts with ActivePerl on Windows systems. Sengupta, Department of Computer Science Engineering, IIT Kharagpur. The Perl package is in /usr/bin and is an older version (5. This introductory Perl tutorial course for Windows will introduce you to the beginning concepts of Perl in a familiar Windows environment and show you how to set it up for CGI with a web server running on your own box. Firstly you need to ensure that you have access to a web server (that has Perl installed), that it has cgi enabled, and that you can put your Perl script into the cgi directory. thrift-r--gen perl tutorial. A string can be defined within a single quote (') or double quote ("). This line is generally the same from one instal of PERL to the next, it might look something like this if you were running it on linux:. Read more about POE. Makefile Tutorial - A Brief tutorial on makefiles What is makefile: A file that instructs the program make how to compile and link a program. pcrepattern man page. Perl 6 is a get it done fast utility language. Perl - Syntax Overview - Perl borrows syntax and concepts from many languages: awk, sed, C, Bourne Shell, Smalltalk, Lisp and even English. If you are new to Perl, this tutorial is an excellent start. Perl 6 is a sister language, part of the Perl family, not intended as a replacement for Perl 5, but as its own thing - libraries exist to allow you to call Perl 5 code from Perl 6 programs and vice versa. These modules make it easy to write Gtk and Gnome applications using a natural, perlish, object-oriented syntax. Run a script from a Web page. By definition, an array is a variable that provides dynamic storage for a list. What We Will Cover? What is Perl? Creating and Executing Perl scripts Standard Input and Output Scalar Variables Arrays Hashes Magic Variables: $_ and @ARGV. If you are wondering why it got deprecated, here is the answer: Switch case may create syntax errors in other parts. Installing Perl from Active State. By David Nelson. CGI scripts can be. simple awk tutorial why awk? awk is small, fast, and simple, unlike, say, perl. They are scalar variables, so they start with ($) sign. That means you will "allow" a script to be "executed" from this specific place. Compound Data Types. It runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. VS Code Perl Debug. In this tutorial, I'll show you how to parse JSON using Perl. Perl is one of the most popular languages out there, and is used for everything from mission-critical projects to Web applications to "glue. This application searches for information on some web sites. In this tutorial, we are going to learn how to work with the MySQL database using the Perl programming language. I put Wikipedia, but you can change. CGI scripts can be. forms work, your counters count, and all kinds of other things happen. Click to hide the menu and go all widescreen!. The first thing most programmers learn how to do in a new language is to instruct their computer to print a "Hello, World" message to the screen. This tutorial will quickly get you up and running with the latest Tk from Tcl, Ruby, Perl or Python on Mac, Windows or Linux. In this article, learn some of the theory behind dealing with legacy code, including what not to do. Edureka's Mastering Perl Scripting course teaches you everything you need to know to become an expert Perl developer right from the basics and enables you to develop useful applications which are used in the industry very often. Perl 6 is a sister language, part of the Perl family, not intended as a replacement for Perl 5, but as its own thing - libraries exist to allow you to call Perl 5 code from Perl 6 programs and vice versa. And if that doesn't make you in awe of Perl regular expressions… Maybe nothing will. This tutorial was written to help my son and I learn Gtk3/Perl. Sample Perl Scripts. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Perl's splice() function is used to cut out and return a chunk or portion of an array. Therefore, if you wish to study the Perl Programming Language further, consult the texts mentioned below. The Regex Coach - interactive regular expressions Abstract The Regex Coach is a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. By definition, a database transaction is a set of SQL statements that executes in an all-or-nothing manner. Makefile is generally used to build the large software programs. The tutorial is specially designed to help them who has little or no knowledge on Perl. In this article, learn some of the theory behind dealing with legacy code, including what not to do. To get an idea of how Perl works, we'll finish off the first lesson with some simple Perl scripts. Just like the for loop, foreach steps through each element of an array using an iterator. About Us; Privacy Policy; Contact us. Learn to program in Perl, the flexible, general-purpose programming language. Here are the absolute nitty-gritty basics of how to get up and running with selenium RC and perl for for Windows, Macintosh, and most Linux systems. Here you'll find various POE tutorials, some homegrown some on other sites. This line is generally the same from one instal of PERL to the next, it might look something like this if you were running it on linux:. Json, AWS QuickSight, JSON. Database programming with Perl - how to contribute. Some people asked why did I show "open or die" and why not using autodie. Welcome to the Perl 5 Tutorial. In this tutorial, the learning speed is your choice. Perl tutorial. Prerequisites. While reading the rest of the site, when in doubt, you can always come back and look here. Regular Expressions in Perl. To get an idea of how Perl works, we'll finish off the first lesson with some simple Perl scripts. A basic introduction to using the Gtk3 toolkit with the Perl bindings. Start of String and End of String Anchors. PERL Online Editor - PERL Online IDE - PERL Coding Online - Share Save PERL Program online. Welcome to CPAN. Part 1 - The Basics; Part 2 - More Advanced Topics. Match zero or more of any characters (except new line). I help by introducing Test Automation, Continuous Integration, Continuous Deployment, Containerization (Vagrant, Docker), Cloudification (GCP, AWS), and other Agile and DevOps practices. If you have any comments or questions, feel free to post them on the source of this page in GitHub. Intro Perl=Practical Extraction and Report Language not shell programming use version 5. When they are used this way, they are often referred to as subrules; see for more details on their use here. It was generated automatically from the original man page. This is a simple perl program that prints Hello World!! on the screen. Introduction. What is Dancer? Dancer is a simple but powerful web application framework for Perl. " It is not, however, often used for GUI programming and prototyping. Introductory Perl Tutorial Course for Windows. It was first developed by Larry Wall, a linguist working as a systems administrator for NASA in the late 1980s, as a way to make report processing easier. Strings are an essential part of the Perl language. Module Docs. In this article, let us discuss how to write Perl socket programming using the inbuilt socket modules in Perl. There is no need to download anything, just click on the chapter you wish to begin from, and follow the instructions. We’re going to show you how you can open files in Perl in this basic tutorial with the open function. Download and install Perl with ActivePerl, precompiled distributions for Perl 5. Perl 6 is a get it done fast utility language. Gtk3 Tutorial. The #1 Perl solution used by enterprises. Perl interview questions and answers for freshers and experienced Prepared by Experts. Perl allows in-place editing with -i. We will be incorporating our PERL scripts with HTML, CSS, and PHP so if you are unfamiliar with any of these languages, it may be a good idea to touch base with the tutorials offered here, or elsewhere for that matter to familiarize yourself with the code we offer. We define a query in the form of a scalar variable then call upon that variable using our connection script and the query function. While this works fine, Win32::GUI actually offers two classes of main window.