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Retrieving Environment and Script Information
This section provides a tutorial example on how to retrieve information about the Web server environment and about the current CGI script file. 2022-11-06, ∼197🔥, 0💬

LWP-UserAgent-GET.pl - Sending a GET Request
This section provides a tutorial example on how to send a GET request to a Web server and dump both request and response messages. 2022-10-05, ∼197🔥, 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, ∼196🔥, 0💬

Using Hash Variables
This section describes how a hash variable can be assigned with a list value. Hash elements are referred by key subscription notation as scalar expressions, like $identifier{'key'}. An unassigned hash variable contains the (undef) value. 2022-10-12, ∼196🔥, 0💬

Built-in Functions to Work with the File System
This section describes Perl built-in functions, chdir(), mkdir(), rmdir(), and unlink() to work with the file system, like to change the current directory, make or remove a directory, or delete a file. 2022-11-04, ∼195🔥, 0💬

Defining Returning Values of a Remote Method Call
This section describes how returning values of a remote method call can be defined in XML format. The root element name is 'methodResponse'. 2022-10-05, ∼194🔥, 0💬

Publishing HTML Documents as Web Pages
This section describes how to publish a HTML document on the Apache HTTP server. 2022-10-17, ∼192🔥, 0💬

Receiving Returning Values as a HTTP Response
This section describes how to receive the returning value XML message from the remote machine. 2022-10-11, ∼192🔥, 0💬

"package" Statement - Switching Name Space
This section provides a tutorial example on how to switch name space with the 'package' statement and how to access identifiers from other name space with double colon '::'. 2022-11-24, ∼190🔥, 0💬

What Is an Expression?
This section describes what is an expression, a mixture of values, variables, operations of expressions and function calls. A tutorial example is provided to show you examples of expressions.. 2022-10-18, ∼190🔥, 0💬

File Test Operators
This section provides a tutorial example on using file test operators to return information about a file or a directory in the file system. For example, -e tests if a file exists or not. 2022-10-10, ∼190🔥, 0💬

post() Method not Following Redirect Location
This section provides a tutorial example showing that the LWP::UserAgent post() method does not follow the redirect 'Location:' header line in the HTTP response header. 2022-10-07, ∼190🔥, 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, ∼189🔥, 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, ∼188🔥, 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, ∼188🔥, 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, ∼187🔥, 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, ∼187🔥, 0💬

GameClient.pl - XML Communication Client Example
This section provides a tutorial example on how write an XML communication client program to connect to a server, send and receive XML messages. 2022-11-10, ∼186🔥, 0💬

dbmopen() - Opening DBM Files with Hash Variables
This section describes the built-in function, dbmopen(), to open DBM database files with hash variables. 2022-10-10, ∼186🔥, 0💬

Install Perl Module from Source Code
This section provides a tutorial on how to install Perl module from source code using the 'make' utility manually on macOS. 2022-10-10, ∼185🔥, 0💬

Imager - Draw Graphical Elements
This section provides a tutorial example on how to draw graphical elements using line(), box(), circle() functions of the Perl Imager module. 2022-10-12, ∼183🔥, 0💬

Debugging Tutorial Session
This section provides a debugging tutorial session to investigate a script by setting break points, stepping through each statement, printing variable values. 2022-11-09, ∼182🔥, 0💬

CPAN (Comprehensive Perl Archive Network)
This chapter provides tutorial examples and notes on CPAN (Comprehensive Perl Archive Network). Topics include installing Perl modules with CPAN 'shell' and 'cpan' command; CPAN local files and directories. 2025-09-30, ∼180🔥, 0💬

RpcXmlServer.pl - RPC::XML Server Sample Program
This section provides a tutorial example on how to write a RPC::XML server sample program, RpcXmlServer.pl, supporting 3 remote methods: com.herong.hello, com.herong.getCelsius, and com.herong.getInfo. 2022-11-24, ∼180🔥, 0💬

<< < … 2 3 4 5 6 7 8 >   ∑:177  Sort:Date

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 REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO