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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, ∼167🔥, 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, ∼167🔥, 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, ∼166🔥, 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, ∼165🔥, 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, ∼165🔥, 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, ∼163🔥, 0💬

http-equiv="Refresh" Meta Tag not Followed
This section provides a tutorial example showing that the LWP::UserAgent get() method does not follow the http-equiv='Refresh' meta tag in the response. 2022-10-04, ∼163🔥, 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, ∼162🔥, 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, ∼162🔥, 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, ∼160🔥, 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, ∼160🔥, 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, ∼160🔥, 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, ∼160🔥, 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, ∼160🔥, 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, ∼160🔥, 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, ∼159🔥, 0💬

Installing RPC::XML Module
This section provides a tutorial example on how to install the Perl module, RPC::XML 0.57, on Windows, downloaded from blackperl.com. 2022-10-06, ∼159🔥, 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, ∼158🔥, 0💬

SubReturnValue.pl - Example on Return Values
This section provides a tutorial example on how a list value can be returned from a subroutine to the caller using the return statement. 2022-10-19, ∼157🔥, 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, ∼157🔥, 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, ∼156🔥, 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, ∼155🔥, 0💬

HelloMySQL.pl - My First Perl Program with MySQL
This section describes a tutorial example on how use the DBI-&gt;connect() function to connect Perl scripts to MySQL database server. 2022-10-14, ∼155🔥, 0💬

LWP-UserAgent-Request.pl - Login to facebook.com
This section provides a tutorial example on how to use LWP-UserAgent-Request.pl to login to facebook.com. The key part is to figure out the POST URI and data value names from HTML form source code. 2022-10-07, ∼155🔥, 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