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What Is Bash (Bourne-Again Shell)
This section provides a quick introduction of Bash (Bourne-Again Shell) which extended Bourne shell with features based on ideas from other Unix shells.
2022-10-01, ∼346🔥, 0💬

Creating FileInfo Objects
This section provides a tutorial example on how to create a FileInfo object to represent a specific executable file using the FileInfo class constructor FileInfo(fileName).
2022-10-01, ∼346🔥, 0💬

Python Built-In Implementation of Base64
This section provides a test program for the default Python implementation of the Base64 encoding algorithm base64.b64encode() and base64.b64decode() methods.
2022-10-01, ∼346🔥, 0💬

Connection, Performance and Second Instance on Linux
This chapter provides introductions and tutorial examples about more advanced topics on running MySQL server on CentOS systems, including MySQL socket and TCP/IP connections; Opening firewall for MySQL connections; testing performance on INSERT statements; creating second server instance; moving dat...
2022-10-01, ∼346🔥, 0💬

Impact of Binary Logging on INSERT
This section provides a tutorial example to demonstrate the performance impact of binary logging, about 50% of execution time reduction on INSERT and other data change statements.
2022-10-01, ∼346🔥, 0💬

Shell Sort - Implementation in PHP
This section provides a tutorial on how to implement the Shell Sort algorithm in PHP.
2022-10-01, ∼346🔥, 0💬

Parallel Collector Changing NewRatio and SurvivorRatio
This section demonstrates that the Parallel Collector changes the NewRatio and the SurvivorRatio dynamically, even they are specified in command line.
2022-10-01, ∼346🔥, 0💬

GCPerfP99V2.java - Object Number and Size
This section provides tutorials to find the work load level for the GCPerfP99V2.java program to the impact of execution environment interruptions to a very level. Work load of 1000 gives me a coefficient variation of 1.22% on my computer used in 2019.
2022-10-01, ∼346🔥, 0💬

Garbage Collection Performance Test Summary
This chapter provides discussions on GC performance test result. Topics include comparison of performances of different garbage collectors; suggestions to use garbage collectors more efficiently.
2022-10-01, ∼346🔥, 0💬

Modules and Module Files
This chapter provides introductions and tutorial examples about on modules and module files. Topics include introduction of 'module' objects and module files; importing module files to create modules; reloading modules; accessing module members; importing module members only.
2022-10-01, ∼346🔥, 0💬

Getting Driver and Server Information
This section describes how to get JDBC driver and database information through the DatabaseMetaData object.
2022-10-01, ∼346🔥, 0💬

Creating CallableStatement Objects with prepareCall()
This section describes how to create a CallableStatement object with the prepareCall() method.
2022-10-01, ∼346🔥, 0💬

Testing DOM XML DTD Validator
This section provides a tutorial example on how to test the DOM XML DTD Validator. All errors are generated with line numbers and explanations.
2022-10-01, ∼345🔥, 0💬

AWT Button Action Handler at the Frame Level
This section provides a tutorial example on how to create an AWT button to handle actions by adding the ActionListener interface to the frame that contains the button component.
2022-10-01, ∼345🔥, 0💬

Assigning an Array to a Scalar Variable
This section provides a tutorial example on how to assign an array to a scalar variable. Actually, a copy of the original array is created and the reference of the copy if assigned the scalar variable.
2022-10-01, ∼345🔥, 0💬

'vbscript:' Pseudo-URL Addresses
This section describes what is a 'vbscript:' pseudo-URL address and provides several interesting examples of 'vbscript:' URLs.
2022-10-01, ∼345🔥, 0💬

DOM Specifications and DOM Node Interface
This section describes the DOM specification. The Core module in DOM Level 1, 2 and 3 specifications is for XML files. A tree of nodes is used to represent an XML file. Each node represents a unit of information in the XML file. All nodes are sharing the Node interface.
2022-10-01, ∼345🔥, 0💬

CrashThread2.java - Thread Testing Program
This section describes a thread testing programs, CrashThread2.java, that keep adding new thread in a while loop.
2022-10-01, ∼345🔥, 0💬

Characters Traveling from JSP Files to Browser Screens
This section describes how character text travels from JSP pages to Web browser screen through various steps using different technologies on different steps.
2022-10-01, ∼345🔥, 0💬

Facets, Constraining Facets and Restriction Datatypes
This chapter provides notes and tutorial examples on datatype facets, constraining facets and restriction datatypes. Topics include introduction of fundamental facets and constraining facets; constructing new user-defined datatypes by reducing constraining facets on a base datatypes; facets descript...
2022-10-01, ∼345🔥, 0💬

The Celestial Sphere Coordinate System
This section describes the celestial sphere coordinate system.
2022-10-01, ∼345🔥, 0💬

'vi' Commands to Insert and Change Text
This section provides a list of commands to insert, delete, replace and move text.
2022-10-01, ∼345🔥, 0💬

Perl Programs and MySQL Servers
This chapter provides notes and tutorial examples on MySQL server and Perl programs. Topics include what software and modules are needed to run Perl programs to access MySQL servers; a sample Perl program that connects to a MySQL server.
2022-10-01, ∼345🔥, 0💬

Creating Tables with AUTO_INCREMENT Columns
Describes how to create a table with an AUTO_INCREMENT column.
2022-10-01, ∼345🔥, 0💬

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