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Currency Exchange Rate
This chapter provides a quick introduction of the free Web service, Currency Exchange Rate. Topics include usage description of Currency Exchange Rate; request message sample; response message sample.
2022-10-01, ∼423🔥, 0💬

Basics of Astrology and Astronomy
This chapter provides some basic knowledge of astronomy and explains how astronomy is related to astrology.
2022-10-01, ∼423🔥, 0💬

WWW and First Web Server
This section provides a quick introduction of WWW (World Wide Web) and the first Web server developed by Tim Berners-Lee in 1991.
2022-10-01, ∼423🔥, 0💬

WPF - Windows Presentation Foundation
Tutorial notes and examples are provided on WPF (Windows Presentation Foundation). Topics include introduction of WPF; System.Windows.Application and System.Windows.Window classes; System.Windows.Controls.* classes; Button click example; MSBuild project file for WPF applications..
2022-10-01, ∼423🔥, 0💬

Watching Asynchronous Operation Execution Status
A tutorial example is provided on how to query the 'Status' property to watch the execution status of an asynchronous operation. The tutorial example shows 5 asynchronous operations running in 5 child threads.
2022-10-01, ∼423🔥, 0💬

Manage MySQL Server 'mysqld' on CentOS
This section provides a tutorial example on how to start and stop MySQL server program 'mysqld' as a system service on CentOS 8 systems using the 'systemctl' command.
2022-10-01, ∼423🔥, 0💬

Bitcoin Consensus Rules
This chapter introduces Bitcoin Consensus Rules.
2022-10-01, ∼423🔥, 0💬

Viewing USB Debugging Devices in Control Panel
This section provides a tutorial example on how to view the LG Android USB Debugging devices in Windows Control Panel. Each device represents a different interface that Windows can use through the USB connection.
2022-10-01, ∼422🔥, 0💬

What Is a Trait
This section describes what is a trait - A trait is a pseudo class that defines a set of properties and operations. A trait can not be instantiated to create new objects. It can only be 'used' by one or more classes for the purpose of code sharing.
2022-10-01, ∼422🔥, 0💬

Installing Server Certificate Permanently in IE
This section provides a tutorial example on how to install the certificate provided by a 'https' Website in IE. The certificate can be installed into a certificate store automatically selected by IE.
2022-10-01, ∼422🔥, 0💬

XSD Schema Validator on XML DOM Object
This section provides a tutorial example on how to load a XSD schema, create an XSD validator and validate an XML DOM object.
2022-10-01, ∼422🔥, 0💬

Partial Classes and Partial Methods
Tutorial notes and examples are provided on partial classes and partial methods. Topics include introduction of partial classes and partial methods; examples of partial classes and partial methods.
2022-10-01, ∼422🔥, 0💬

Operations and Expressions
This chapter provides tutorial notes on operations and expressions. Topics include types of operations and expressions; arithmetic operations; predicate operations; data and time operations; examples of different types of operations.
2022-10-01, ∼422🔥, 0💬

Tenured Generation Collection - Major GC
This section describes basic steps of a Tenured Generation Collection, also called a Major GC, which uses a simple 3-step Mark-Sweep-Compact algorithm on the entire Tenured Generation.
2022-10-01, ∼422🔥, 0💬

File Systems
This chapter provides introductions and tutorial on Linux file systems. Topics include 'df' to see disk free spaces of mounted file systems; 'mount' to access USB drive file systems; 'fdisk' to list partitions and file system types; 'dd' to copy data and test I/O speed; 'hdparm' to manage hard disk ...
2022-10-01, ∼422🔥, 0💬

File Input and Output for DataFrame
This section describes pandas.DataFrame/pandas.core.f rame.DataFrameclass, which represents a table of data with rows and columns.
2022-10-01, ∼422🔥, 0💬

First Apache Ant Build File Example
This section provides a tutorial example on how to write an Apache Ant build file to compile and run a simple Java application, Hello.java.
2022-10-01, ∼421🔥, 0💬

Archived: Android Emulator Built-in Applications
This section describes the Android emulator home screen and built-in applications.
2022-10-01, ∼421🔥, 0💬

Date and Time Object and String Conversion
This chapter provides tutorial notes and example codes on date and time string format. Topics include using java.util.DateFormat.format() method to format date objects into text strings; using java.util.SimpleDateFormat.par se()method to parse date strings into objects.
2022-10-01, ∼421🔥, 0💬

Archived: mysql_connect() using php_mysql.dll Library
This section describes functions supported by the MySQL extension library, php_mysql.dll. mysql_connect() creates a connection to the specified MySQL server.
2022-10-01, ∼421🔥, 0💬

What Is an Object?
This section provides a quick description of what is an object in JavaScript and some interesting features on creating and using objects. A tutorial example is also provided.
2022-10-01, ∼421🔥, 0💬

"java --module" - Launching Program from Module
This section provides a tutorial example on how to use 'java --module' command to launch a program that is packaged in a Java module.
2022-10-01, ∼421🔥, 0💬

Enum Constant Implicit Methods
This section describes 2 static methods implicitly added by the Java compiler to all enum types declared by the 'enum' statement.
2022-10-01, ∼421🔥, 0💬

Archived: Compilation Errors with JDK 1.4
This section describes the compilation error on a JSP page that tries to use the 'page import' directive element to import a JavaBean class declared without package name.
2022-10-01, ∼421🔥, 0💬

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