--- title: Learn Computing from the Experts | The Rheinwerk Computing Blog (13) description: Dive into programming, web development, and more with Rheinwerk Computing Blog! Your go-to resource for expanding your computing knowledge. (13) --- [![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/How%20to%20Write%20Your%20Own%20Python%20Functions.jpg?width=1000&name=How%20to%20Write%20Your%20Own%20Python%20Functions.jpg) [Featured](https://blog.rheinwerk-computing.com/tag/featured) | Featured article ## [How to Write Your Own Python Functions](https://blog.rheinwerk-computing.com/how-to-write-your-own-python-functions) Functions in Python provide functionality that you or someone else has already pro­grammed. In this post, we’ll teach you how to write your own Python functions. ![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-write-your-own-python-functions) # Latest Blog Posts [![Getting Started with Coding Via AI Tools Like ChatGPT \[5 Real-Life Examples\]](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Getting%20Started%20with%20Coding%20Via%20AI%20Tools%20Like%20ChatGPT%20%5B4%20Examples%5D.png?height=600&name=Getting%20Started%20with%20Coding%20Via%20AI%20Tools%20Like%20ChatGPT%20%5B4%20Examples%5D.png)](https://blog.rheinwerk-computing.com/getting-started-with-coding-via-ai-tools-like-chatgpt) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [Getting Started with Coding Via AI Tools Like ChatGPT \[5 Real-Life Examples\]](https://blog.rheinwerk-computing.com/getting-started-with-coding-via-ai-tools-like-chatgpt) Chat systems such as ChatGPT provide the most intuitive introduction to AI-supported coding. When we wrote this post, there were various free systems... ![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/getting-started-with-coding-via-ai-tools-like-chatgpt) [![Designing Software Architectures: Heuristic Basics](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Designing%20Software%20Architectures_%20Heuristic%20Basics.jpg?height=600&name=Designing%20Software%20Architectures_%20Heuristic%20Basics.jpg)](https://blog.rheinwerk-computing.com/designing-software-architectures-heuristic-basics) [Software Development](https://blog.rheinwerk-computing.com/tag/software-development) ## [Designing Software Architectures: Heuristic Basics](https://blog.rheinwerk-computing.com/designing-software-architectures-heuristic-basics) Heuristics are methods and procedures used to solve problems with efficient use of resources. ![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/designing-software-architectures-heuristic-basics) [![How to Install and Configure Fail2ban](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Install%20and%20Configure%20Fail2ban.jpg?height=600&name=How%20to%20Install%20and%20Configure%20Fail2ban.jpg)](https://blog.rheinwerk-computing.com/how-to-install-and-configure-fail2ban) [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) ## [How to Install and Configure Fail2ban](https://blog.rheinwerk-computing.com/how-to-install-and-configure-fail2ban) *Fail2ban* is a program that monitors logging files where programs log failed login ![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-install-and-configure-fail2ban) [![What Is RAII in C++?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20is%20RAII%20in%20C.jpg?height=600&name=What%20is%20RAII%20in%20C.jpg)](https://blog.rheinwerk-computing.com/what-is-raii-in-cpp) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is RAII in C++?](https://blog.rheinwerk-computing.com/what-is-raii-in-cpp) Resource Acquisition Is Initialization (RAII) means that when creating an object—a resource—its initialization is also done. ![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-raii-in-cpp) [![How to Create a Snake Game with Java](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Create%20a%20Snake%20Game%20with%20Java.jpg?height=600&name=How%20to%20Create%20a%20Snake%20Game%20with%20Java.jpg)](https://blog.rheinwerk-computing.com/how-to-create-a-snake-game-with-java) [Java](https://blog.rheinwerk-computing.com/tag/java) ## [How to Create a Snake Game with Java](https://blog.rheinwerk-computing.com/how-to-create-a-snake-game-with-java) In this blog post, you'll learn how to create a *Snake* game with the Java language. ![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-create-a-snake-game-with-java) [![How Is Scripting Different from Programming?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20Is%20Scripting%20Different%20from%20Programming.jpg?height=600&name=How%20Is%20Scripting%20Different%20from%20Programming.jpg)](https://blog.rheinwerk-computing.com/how-is-scripting-different-from-programming) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [How Is Scripting Different from Programming?](https://blog.rheinwerk-computing.com/how-is-scripting-different-from-programming) Scripting allows you to automate repetitive tasks, connect different software tools, and quickly solve small problems with minimal code. ![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-is-scripting-different-from-programming) [![3 Different Types of Mobile Apps: A Comparison](https://blog.rheinwerk-computing.com/hs-fs/hubfs/3%20Different%20Types%20of%20Mobile%20Apps_%20A%20Comparison.png?height=600&name=3%20Different%20Types%20of%20Mobile%20Apps_%20A%20Comparison.png)](https://blog.rheinwerk-computing.com/3-different-types-of-mobile-apps-a-comparison) [Web Development](https://blog.rheinwerk-computing.com/tag/web-development) ## [3 Different Types of Mobile Apps: A Comparison](https://blog.rheinwerk-computing.com/3-different-types-of-mobile-apps-a-comparison) Basically, mobile applications are divided into the following three types: ![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/3-different-types-of-mobile-apps-a-comparison) [![Database Normalization: A Step-by-Step Guide to First, Second, and Third Normal Forms](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Database%20Normalization_%20A%20Step-by-Step%20Guide%20to%20First%2c%20Second%2c%20and%20Third%20Normal%20Forms.jpg?height=600&name=Database%20Normalization_%20A%20Step-by-Step%20Guide%20to%20First,%20Second,%20and%20Third%20Normal%20Forms.jpg)](https://blog.rheinwerk-computing.com/database-normalization-a-step-by-step-guide-to-first-second-and-third-normal-forms) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [Database Normalization: A Step-by-Step Guide to First, Second, and Third Normal Forms](https://blog.rheinwerk-computing.com/database-normalization-a-step-by-step-guide-to-first-second-and-third-normal-forms) Normalization is actually not a component of relational databases, but it’s so common and prevalent that it’s as inseparable from relational... ![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/database-normalization-a-step-by-step-guide-to-first-second-and-third-normal-forms) [![HTML Headings Done Right: How to Organize Content with h1 to h6](https://blog.rheinwerk-computing.com/hs-fs/hubfs/HTML%20Headings%20Done%20Right_%20How%20to%20Organize%20Content%20with%20_h1_%20to%20_h6_.png?height=600&name=HTML%20Headings%20Done%20Right_%20How%20to%20Organize%20Content%20with%20_h1_%20to%20_h6_.png)](https://blog.rheinwerk-computing.com/html-headings-done-right-how-to-organize-content-with-h1-to-h6) [HTML & CSS](https://blog.rheinwerk-computing.com/tag/html-css) ## [HTML Headings Done Right: How to Organize Content with h1 to h6](https://blog.rheinwerk-computing.com/html-headings-done-right-how-to-organize-content-with-h1-to-h6) Properly structured HTML headings not only improve readability but also enhance accessibility and SEO—learn how to use \ to \ correctly in this... ![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/html-headings-done-right-how-to-organize-content-with-h1-to-h6) [![How to ](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20_Do_%20UX%20Design_%20A%20Guide%20to%20the%20ISO%209241-210%20Standard.png?height=600&name=How%20to%20_Do_%20UX%20Design_%20A%20Guide%20to%20the%20ISO%209241-210%20Standard.png)](https://blog.rheinwerk-computing.com/how-to-do-ux-design-a-guide-to-the-iso-9241-210-standard) [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) Probably the oldest and most widely used process in the usability and UX world comes from an International Organization for Standardization (ISO)... ![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-do-ux-design-a-guide-to-the-iso-9241-210-standard) - - [1](https://blog.rheinwerk-computing.com/page/1) - [...](https://blog.rheinwerk-computing.com/page/8) - [11](https://blog.rheinwerk-computing.com/page/11) - [12](https://blog.rheinwerk-computing.com/page/12) - [13](https://blog.rheinwerk-computing.com/page/13) - [14](https://blog.rheinwerk-computing.com/page/14) - [15](https://blog.rheinwerk-computing.com/page/15) - [...](https://blog.rheinwerk-computing.com/page/18) - [31](https://blog.rheinwerk-computing.com/page/31) - ### 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) - [JavaScript](https://blog.rheinwerk-computing.com/tag/javascript) - [DevOps](https://blog.rheinwerk-computing.com/tag/devops) - [Featured](https://blog.rheinwerk-computing.com/tag/featured) - [Web Development](https://blog.rheinwerk-computing.com/tag/web-development) - [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) - [Cybersecurity](https://blog.rheinwerk-computing.com/tag/cybersecurity) - [Artificial Intelligence](https://blog.rheinwerk-computing.com/tag/artificial-intelligence) - [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. 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