--- title: Learn Computing from the Experts | The Rheinwerk Computing Blog | Rheinwerk Computing (12) description: Rheinwerk Computing is an imprint of Rheinwerk Publishing and publishes books by leading experts in the fields of programming, administration, security, analytics, and more. (12) --- [![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) ![Rheinwerk Computing](https://blog.rheinwerk-computing.com/hubfs/RW-logo-300x300.png) **Rheinwerk Computing** Rheinwerk Computing is an imprint of Rheinwerk Publishing and publishes books by leading experts in the fields of programming, administration, security, analytics, and more. # Blogs by Rheinwerk Computing [![How to Create a Custom Component Library in React](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Create%20a%20Custom%20Component%20Library%20in%20React.png?height=600&name=How%20to%20Create%20a%20Custom%20Component%20Library%20in%20React.png)](https://blog.rheinwerk-computing.com/how-to-create-a-custom-component-library-in-react) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [How to Create a Custom Component Library in React](https://blog.rheinwerk-computing.com/how-to-create-a-custom-component-library-in-react) To create your own React component library, you need to perform several steps. ![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-custom-component-library-in-react) [![How to Compile Node.js from Source: A Step-by-Step Guide for Ubuntu](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Compile%20Node.js%20from%20Source%20A%20Step-by-Step%20Guide%20for%20Ubuntu.png?height=600&name=How%20to%20Compile%20Node.js%20from%20Source%20A%20Step-by-Step%20Guide%20for%20Ubuntu.png)](https://blog.rheinwerk-computing.com/how-to-compile-nodejs-from-source-a-step-by-step-guide-for-ubuntu) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [How to Compile Node.js from Source: A Step-by-Step Guide for Ubuntu](https://blog.rheinwerk-computing.com/how-to-compile-nodejs-from-source-a-step-by-step-guide-for-ubuntu) In this blog post, you’ll learn how to operate Node.js not by using binary packages or by installing it using an installer for your system, but by... ![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-compile-nodejs-from-source-a-step-by-step-guide-for-ubuntu) [![Understanding React's useCallback and useMemo Hooks](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Understanding%20Reacts%20useCallback%20and%20useMemo%20Hooks.jpg?height=600&name=Understanding%20Reacts%20useCallback%20and%20useMemo%20Hooks.jpg)](https://blog.rheinwerk-computing.com/understanding-reacts-usecallback-and-usememo-hooks) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [Understanding React's useCallback and useMemo Hooks](https://blog.rheinwerk-computing.com/understanding-reacts-usecallback-and-usememo-hooks) The callback hook in React is intended to optimize the rendering process, and the memo hook is used to create a memoized version of any object... ![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/understanding-reacts-usecallback-and-usememo-hooks) [![How to Install XAMPP for JavaScript](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Install%20XAMPP%20for%20JavaScript.jpg?height=600&name=How%20to%20Install%20XAMPP%20for%20JavaScript.jpg)](https://blog.rheinwerk-computing.com/how-to-install-xampp-for-javascript) [Programming Languages](https://blog.rheinwerk-computing.com/tag/programming-languages) ## [How to Install XAMPP for JavaScript](https://blog.rheinwerk-computing.com/how-to-install-xampp-for-javascript) This blog post describes the installation of *XAMPP* and then provides a list of keywords in the JavaScript 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-install-xampp-for-javascript) [![What Is Gitolite?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20Gitolite.jpg?height=600&name=What%20Is%20Gitolite.jpg)](https://blog.rheinwerk-computing.com/what-is-gitolite) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [What Is Gitolite?](https://blog.rheinwerk-computing.com/what-is-gitolite) Gitolite is the program that’s currently the most streamlined of all for managing your own Git hosting. ![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-gitolite) [![Getting Started with Docker: Basic Principles and Terminology](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Getting%20Started%20with%20Docker_%20Basic%20Principles%20and%20Terminology.jpg?height=600&name=Getting%20Started%20with%20Docker_%20Basic%20Principles%20and%20Terminology.jpg)](https://blog.rheinwerk-computing.com/getting-started-with-docker-basic-principles-and-terminology) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [Getting Started with Docker: Basic Principles and Terminology](https://blog.rheinwerk-computing.com/getting-started-with-docker-basic-principles-and-terminology) This blog post explains the most important terms used in the Docker world and provides an overview of how Docker works. ![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-docker-basic-principles-and-terminology) [![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) - - [1](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/1) - [...](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/7) - [10](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/10) - [11](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/11) - [12](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/12) - [13](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/13) - [14](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/14) - [...](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/17) - [29](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/29) - ### 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) - [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) - [Artificial Intelligence](https://blog.rheinwerk-computing.com/tag/artificial-intelligence) - [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. 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