--- title: Learn Computing from the Experts | The Rheinwerk Computing Blog (26) description: Dive into programming, web development, and more with Rheinwerk Computing Blog! Your go-to resource for expanding your computing knowledge. (26) --- [![Rheinwerk Computing Logo](https://blog.rheinwerk-computing.com/hubfs/computing_logo-header.svg)](https://blog.rheinwerk-computing.com/) [Blog](https://blog.rheinwerk-computing.com) - Books - Get an overview of our wide selection of books on every relevant computing topic. - [General Computing](https://www.sap-press.com/rheinwerk-computing/general-computing/) - [DevOps](https://www.sap-press.com/rheinwerk-computing/devops/) - [Programming Languages](https://www.sap-press.com/rheinwerk-computing/programming-languages/) - [Security](https://www.sap-press.com/rheinwerk-computing/security/) - [Software Development](https://www.sap-press.com/rheinwerk-computing/software-development/) - Book Subscription - Get unlimited access to all Rheinwerk Computing books! - [Programming Subscription](https://sap-press.com/subscriptions/) ![](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Enumerations%20and%20Flags%20in%20Python%20Programming.jpg?width=1000&name=Enumerations%20and%20Flags%20in%20Python%20Programming.jpg) [Featured](https://blog.rheinwerk-computing.com/tag/featured) | Featured article ## [Enumerations and Flags in Python Programming](https://blog.rheinwerk-computing.com/enumerations-and-flags-in-python-programming) In this post, we’ll describe *enumerations*, another interesting data type that Python makes available to the developer as part of the standard library. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/enumerations-and-flags-in-python-programming) # Latest Blog Posts [![Exploring a Simple HTML Document Framework](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Exploring%20a%20Simple%20HTML%20Document%20Framework.png?height=600&name=Exploring%20a%20Simple%20HTML%20Document%20Framework.png)](https://blog.rheinwerk-computing.com/exploring-a-simple-html-document-framework) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [Exploring a Simple HTML Document Framework](https://blog.rheinwerk-computing.com/exploring-a-simple-html-document-framework) The basic framework of an HTML document roughly consists of three parts, as you can see in this figure. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/exploring-a-simple-html-document-framework) [![What Is Wireshark?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20Wireshark.png?height=600&name=What%20Is%20Wireshark.png)](https://blog.rheinwerk-computing.com/what-is-wireshark) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is Wireshark?](https://blog.rheinwerk-computing.com/what-is-wireshark) The open-source user interface Wireshark (formerly Ethereal) is a network protocol analysis program. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/what-is-wireshark) [![Ways to Encrypt a Hard Drive](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Ways%20to%20Encrypt%20a%20Hard%20Drive.png?height=600&name=Ways%20to%20Encrypt%20a%20Hard%20Drive.png)](https://blog.rheinwerk-computing.com/ways-to-encrypt-a-hard-drive) [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) ## [Ways to Encrypt a Hard Drive](https://blog.rheinwerk-computing.com/ways-to-encrypt-a-hard-drive) How can you defend yourself against physical attacks to a Windows or Linux machine? This blog post will discuss. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/ways-to-encrypt-a-hard-drive) [![What Is USB Rubber Ducky?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20USB%20Rubber%20Ducky.png?height=600&name=What%20Is%20USB%20Rubber%20Ducky.png)](https://blog.rheinwerk-computing.com/what-is-usb-rubber-ducky) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is USB Rubber Ducky?](https://blog.rheinwerk-computing.com/what-is-usb-rubber-ducky) With its USB Rubber Ducky, the Hak5 company created a quasi-standard for USB attacks of all kinds. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/what-is-usb-rubber-ducky) [![How to Integrate CSS into HTML](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Integrate%20CSS%20into%20HTML.png?height=600&name=How%20to%20Integrate%20CSS%20into%20HTML.png)](https://blog.rheinwerk-computing.com/how-to-integrate-css-into-html) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [How to Integrate CSS into HTML](https://blog.rheinwerk-computing.com/how-to-integrate-css-into-html) There are several ways to associate CSS style statements with an HTML document. Strictly speaking, you have three options at your disposal. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/how-to-integrate-css-into-html) [![What Is a Spring Container?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20a%20Spring%20Container%20(2).jpg?height=600&name=What%20Is%20a%20Spring%20Container%20(2).jpg)](https://blog.rheinwerk-computing.com/what-is-a-spring-container) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is a Spring Container?](https://blog.rheinwerk-computing.com/what-is-a-spring-container) At the heart of a Spring application is a special data structure, the Spring container (*container* for short). The objects that this container manages... ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/what-is-a-spring-container) [![What Is the Double Diamond Model in Design Projects?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20the%20Double%20Diamond%20Model%20in%20Design%20Projects.png?height=600&name=What%20Is%20the%20Double%20Diamond%20Model%20in%20Design%20Projects.png)](https://blog.rheinwerk-computing.com/what-is-the-double-diamond-model-in-design-projects) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is the Double Diamond Model in Design Projects?](https://blog.rheinwerk-computing.com/what-is-the-double-diamond-model-in-design-projects) The Double Diamond model is another ideal approach to human-centered design projects. This model was developed in 2005 by the *British Design Council* ... ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/what-is-the-double-diamond-model-in-design-projects) [![Using TaskExecutor in Spring](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Using%20TaskExecutor%20in%20Spring.png?height=600&name=Using%20TaskExecutor%20in%20Spring.png)](https://blog.rheinwerk-computing.com/using-taskexecutor-in-spring) [Java](https://blog.rheinwerk-computing.com/tag/java) ## [Using TaskExecutor in Spring](https://blog.rheinwerk-computing.com/using-taskexecutor-in-spring) The asynchronous operations in the background must be executed by one entity. This is the job of an executor. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/using-taskexecutor-in-spring) [![Learning to Program with Git Support](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Learning%20to%20Program%20with%20Git%20Support.png?height=600&name=Learning%20to%20Program%20with%20Git%20Support.png)](https://blog.rheinwerk-computing.com/learning-to-program-with-git-support) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [Learning to Program with Git Support](https://blog.rheinwerk-computing.com/learning-to-program-with-git-support) Imagine you want to learn Python (or any other language). Over the course of a few weeks, you try out new functions and create various small sample... ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/learning-to-program-with-git-support) [![Docker Commands for Administration Purposes](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Docker%20Commands%20for%20Administration%20Purposes.png?height=600&name=Docker%20Commands%20for%20Administration%20Purposes.png)](https://blog.rheinwerk-computing.com/docker-commands-for-administration-purposes) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [Docker Commands for Administration Purposes](https://blog.rheinwerk-computing.com/docker-commands-for-administration-purposes) This blog post provides an initial overview of docker commands you can use for the administration of your Docker system. ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) [Read More](https://blog.rheinwerk-computing.com/docker-commands-for-administration-purposes) - - [1](https://blog.rheinwerk-computing.com/page/1) - [...](https://blog.rheinwerk-computing.com/page/21) - [24](https://blog.rheinwerk-computing.com/page/24) - [25](https://blog.rheinwerk-computing.com/page/25) - [26](https://blog.rheinwerk-computing.com/page/26) - [27](https://blog.rheinwerk-computing.com/page/27) - [28](https://blog.rheinwerk-computing.com/page/28) - [...](https://blog.rheinwerk-computing.com/page/30) - [30](https://blog.rheinwerk-computing.com/page/30) - ### Blog Topics - [All Topics](https://blog.rheinwerk-computing.com) - [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) - [How To](https://blog.rheinwerk-computing.com/tag/how-to) - [DevOps](https://blog.rheinwerk-computing.com/tag/devops) - [Featured](https://blog.rheinwerk-computing.com/tag/featured) - [JavaScript](https://blog.rheinwerk-computing.com/tag/javascript) - [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) - [Artificial Intelligence](https://blog.rheinwerk-computing.com/tag/artificial-intelligence) - [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) - [Web Development](https://blog.rheinwerk-computing.com/tag/web-development) - [Software Development](https://blog.rheinwerk-computing.com/tag/software-development) **Subscribe to our blog!**Get notified about future blog updates. - - - ### Most Popular Blog Posts 1. [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) [What Is the Basic Structure of a Python Program?](https://blog.rheinwerk-computing.com/what-is-the-basic-structure-of-a-python-program) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) 2. [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) [11 Linux Shell Commands for Hacking and Security](https://blog.rheinwerk-computing.com/11-linux-shell-commands-for-hacking-and-security) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) 3. [HTML & CSS](https://blog.rheinwerk-computing.com/tag/html-css) [Twelve-Factor App Principles for Developers](https://blog.rheinwerk-computing.com/twelve-factor-app-principles-for-developers) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) 4. [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) [What Are the 4 Principles of Cryptography?](https://blog.rheinwerk-computing.com/what-are-the-4-principles-of-cryptography) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) 5. [User Experience](https://blog.rheinwerk-computing.com/tag/user-experience) [How to "Do" UX Design: A Guide to the ISO 9241-210 Standard](https://blog.rheinwerk-computing.com/how-to-do-ux-design-a-guide-to-the-iso-9241-210-standard) by [Rheinwerk Computing](https://blog.rheinwerk-computing.com/author/rheinwerk-computing) **Subscribe to our blog!**Get notified about future blog updates. - - - ### The official Rheinwerk Computing Blog Rheinwerk Computing is an imprint of Rheinwerk Publishing and publishes resources that will help you accelerate your computing journey. 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