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Spatial Data Functions
Describes some commonly used Spatial Data functions like, ST_GeomFromText(), ST_AsText(), ST_GeometryType(), POINT(), ST_X(), ST_Y(), ST_NumPoints(), ST_PointN(), ST_Area(), etc.
2022-10-01, ∼535🔥, 0💬

OpenSSL Generating and Managing RSA Keys
This chapter provides tutorial notes and example codes on managing RSA keys with OpenSSL. Topics include generating new RSA keys; viewing existing RSA keys; encrypting RSA keys with DES algorithm to protect them with passwords.
2025-02-21, ∼534🔥, 1💬

💬 2025-02-21 bz: good for helping me

Derby (Java DB) - ResultSet Objects of Queries
This chapter provides tutorial notes on JDBC ResultSet with Derby (Java DB) JDBC Driver. Topics include ResultSet cursor, scrollable, and update capability; getString() and updateString() methods; updateRow(), insertRow(), and deleteRow() methods.
2022-10-09, ∼534🔥, 0💬

Secret Key Generation and Management
This chapter provides tutorial notes and example codes on secret keys. Topics include secret keys for Blowfish, DES, or HmacMD5 encryption algorithms; key generator class; test program to generate secret keys and save them in files.
2022-10-01, ∼534🔥, 0💬

jmc (Java Mission Control) - What Is It
This section describes what is 'jmc' (Java Mission Control) - a GUI tool suite for managing, monitoring, profiling, and troubleshooting your Java applications.
2022-10-01, ∼534🔥, 0💬

"jdeprscan jar_file" - Deprecated API of JAR File
This section provides a tutorial example on how to use 'jdeprscan' command to scan for deprecated APIs of a given JAR file.
2022-10-01, ∼534🔥, 0💬

SOAP Web Service Request Template
This section provides a tutorial example on how to review the request template generated by SoapUI for a SOAP Web service from a WSDL document.
2022-10-01, ∼534🔥, 0💬

Bitcoin Market Price Value
This section describes the market price value of Bitcoin.
2022-05-06, ∼534🔥, 3💬

💬 2022-05-06 FRANK BERRY: I JUST GOT MY 5.2 BTC I AM THE HAPPIEST PERSON RIGHT NOW, THANKS TO DARK WEB CYBER HACKERS FOR SAVING MY LIFE, IF YOU ARE INTERE...

What Is a Class Diagram?
This section describes the UML Class Diagram, which a structural view of a system by listing its object classes with relations between classes.
2022-10-11, ∼533🔥, 0💬

Collaboration Diagram and Notations in Visio
This section lists UML Collaboration Diagram notations supported in MS Visio 2010.
2022-10-08, ∼533🔥, 0💬

Writing My First Java Program
This section provides a tutorial example on how to write, compile, and execute the first Java program with JDK 1.8.
2022-10-01, ∼533🔥, 0💬

Locales, Localization Methods and Resource Bundles
This chapter provides tutorial notes and example codes on localization methods and resource bundles. Topics include using java.text.SimpleDateFormat and java.text.DecimalFormat locale sensitive methods; using java.util.ResourceBundle class to define localization resource bundles; using java.util.Pro...
2022-10-01, ∼533🔥, 0💬

Conditional Statements - "If ... Then" and "Select Case"
This chapter provides tutorial examples and notes about conditional statements. Topics include 4 forms of 'If ... Then' statements, 'Select Case' statements, Examples of controlling code executions with conditional statements.
2022-10-01, ∼533🔥, 0💬

What Is XML
This section provides a quick introduction of XML (eXtensible Markup Language), a markup language for organizing information in text files.
2022-10-01, ∼533🔥, 0💬

MySQL Server on macOS
This chapter provides tutorial notes on MySQL server for macOS systems. Topics include installing MySQL Server on macOS; connecting MySQL Server on macOS using localhost IP address.
2022-10-01, ∼533🔥, 0💬

Bitcoin Core Download Blockchain
This section shows Bitcoin Core downloading the entire Bitcoin blockchain.
2022-10-01, ∼533🔥, 0💬

Send Ether from MetaMask to Private Network Failed
This section describes the error occurred with sending Ether from the MetaMask account to my Ether private network.
2022-10-01, ∼533🔥, 0💬

Archived Tutorials
This chapter contains some outdated tutorial notes and example codes from previous versions of this book.
2022-10-01, ∼533🔥, 0💬

Most Popular Search Engines
The most popular search engines based on page referral request counts for year 2024 with 1 week of log files missing.
2025-01-13, ∼532🔥, 0💬

Big5 to Unicode - Row CA: Level 2 Characters
Big5 to Unicode code point mapping is provided for Big5 character set - Row CA: Level 2 Characters.
2024-01-29, ∼532🔥, 0💬

Archived: Managing Certificates in Firefox 18
This section provides a tutorial example on how to access and manage certificates pre-installed Firefox 18.
2022-10-29, ∼532🔥, 0💬

Chinese Calendars: Year 1961 to 1970
This chapter provides Chinese calendars for 10 years from 1961 to 1970.
2022-10-17, ∼532🔥, 0💬

Perl Socket Test Program for HTTP and SOAP
This chapter provides tutorial notes and example codes on the Perl socket test program for HTTP and SOAP communications. Topics include writing a simple Perl socket test program; sending HTTP 1.0 and HTTP 1.1 requests; sending SOAP 1.1 and SOAP 1.2 requests; fixing the issue caused by Content-Length...
2022-10-06, ∼532🔥, 0💬

Length Contraction Formula and Lorentz Factor
This section provides steps to derive the length contraction formula expressed with the Lorentz factor, based a thought experiment and the time dilation formula.
2022-10-05, ∼532🔥, 0💬

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