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Archived: Install ActivePerl v5.18.1 on Windows Systems
This section provides a tutorial example on how to install ActivePerl v5.18.1 on a Windows 7 system. 2022-11-04, 102🔥, 0💬

Install Imager::File::PNG Manually
This section provides a tutorial example on how to install Imager::File::PNG Perl module manually from source code files on macOS. Installation failed with wrong architecture in LIBPNG library. 2022-11-03, 101🔥, 0💬

What Is XML-RPC?
This section describes what is XML-RPC - a specification on how to make a Remote Procedure call (RPC) by passing XML messages using HTTP requests and responses over the Internet. 2022-11-02, 105🔥, 0💬

What Is Socket Communication?
This section describes the socket communication model on the Internet network. A socket represents one end-point of a two-way communication link between two programs running on the Internet network. 2022-11-02, 107🔥, 0💬

CGI (Common Gateway Interface)
This chapter provides tutorial examples and notes on CGI (Common Gateway Interface). Topics include CGI protocol specifications; environment variables provided by IIS; CGI query string; CGI example program. 2022-11-02, 102🔥, 0💬

Variables - Scalar, Array and Hash
This section describes Perl variable types: Scalar, Array, and Hash. Variable names must be prefixed with special symbols to indicate their types, $, @ and %. 2022-11-02, 103🔥, 0💬

do() Function - Including Script Files
This section provides a tutorial example on how to use do() function to include script code from another file into the current script file. 2022-11-01, 107🔥, 0💬

Imager - Convert Image File Format
This section provides a tutorial example on how to convert image file from one format to another format using read() and write() functions from the Perl Imager module. 2022-10-31, 105🔥, 0💬

Commonly Used Debugging Commands
This section describes how to run the Perl built-in debugger with the 'perl -d' option. Commonly used debugging commands are also provided. 2022-10-31, 105🔥, 0💬

Data Types: Values and Variables
This chapter provides tutorial examples and notes about data types: values and variables. Topics include scalar and list value constructors; scalar value interpretations; scalar, array and hash variables; undef value and undefined variables. 2022-10-31, 101🔥, 0💬

List Value Constructors
This section describes what is a list value constructor, a list of scalar values separated by commas. Elements of a list value can be accessed with the subscription notation [i]. 2022-10-31, 101🔥, 0💬

Installing Database Module for MySQL
This section provides a tutorial example on how to install Perl modules to access MySQL database server with Perl scripts. 2022-10-29, 104🔥, 0💬

Socket Communication Over the Internet
This chapter provides tutorial examples and notes on socket communication. Topics include the socket communication interface model; built-in functions for socket communication server and client; using listen() and accept() functions to play the server role; using connect() to play the client role. 2022-10-28, 107🔥, 0💬

gethostbyaddr() - Network Utility Functions
This section provides a tutorial example on how to use network utility functions to get default port numbers of standard network services, or get the host name on the network by a given IP address. 2022-10-28, 105🔥, 0💬

Simple Statements and Modifiers
This section describes simple statements - an expression terminated with semicolon. Simple statements can have modifiers: if, unless, while, until, foreach. 2022-10-26, 100🔥, 0💬

Install Xcode Command Line Tools
This section provides a tutorial on how to install Xcode Command Line Tools, which is required to install Perl add-on modules on macOS. 2022-10-25, 102🔥, 0💬

SubParamList.pl - Example on Parameter List
This section provides a tutorial example on how the parameter list is passed to and received in a user defined subroutine by the local array variable @_. 2022-10-24, 103🔥, 0💬

Performance of Perl substr() and index()
This section provides a tutorial example to test performance of 2 Perl built-in functions: substr() and index() on a Window 2000 system. 2022-10-24, 102🔥, 0💬

ReverseEchoer.pl - A Simple Socket Server Program
This section provides a tutorial example on how to write a simple socket communication server program, ReverseEchoer.pl, which listens and accepts for any client requests. 2022-10-24, 103🔥, 0💬

Using Array Variables
This section describes how an array variable can be assigned with a list value. Array elements are referred by subscription notation as scalar expressions, like $identifier[i]. An unassigned array variable contains the (undef) value. 2022-10-24, 105🔥, 0💬

Typeglob and Importing Identifiers from Other Packages
This chapter provides tutorial examples and notes about typeglob and importing identifiers from other packages. Topics include accessing typeglobs from package's symbolic table; defining alias for identifiers from other packages; using Exporter to export and import identifiers from other packages. 2022-10-23, 102🔥, 0💬

DirGrep.pl - Searching Text in Directory Files
This section provides a tutorial example, DirGrep.pl, to search text in files and sub directories using a recursive method to walk through a directory tree. 2022-10-23, 100🔥, 0💬

Expression Evaluation Context
This section describes expression evaluation contexts: scalar context and list context. Operations and function may behave differently in different context. A list value in a scalar context is converted by taking the last value. 2022-10-19, 103🔥, 0💬

RPC::XML Client and Data Classes
This section describes the RPC::XML::Client class, the RPC::XML::request class, and data classes. 2022-10-19, 101🔥, 0💬

< 1 2 3 4 5 6 7 … > >>   ∑:173  Sort:Rank

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO