--- title: Learn Computing from the Experts | The Rheinwerk Computing Blog | Rheinwerk Computing (20) 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. (20) --- [![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 [![The java.util.Objects Utility Class](https://blog.rheinwerk-computing.com/hs-fs/hubfs/The%20java.util.Objects%20Utility%20Class.png?height=600&name=The%20java.util.Objects%20Utility%20Class.png)](https://blog.rheinwerk-computing.com/the-java-util-objects-utility-class) [Java](https://blog.rheinwerk-computing.com/tag/java) ## [The java.util.Objects Utility Class](https://blog.rheinwerk-computing.com/the-java-util-objects-utility-class) The Objects class in Java contains some static utility functions. These functions primarily perform null tests to avoid a subsequent... ![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/the-java-util-objects-utility-class) [![Ethical Considerations in AI Development and Deployment](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Ethical%20Considerations%20in%20AI%20Development%20and%20Deployment.png?height=600&name=Ethical%20Considerations%20in%20AI%20Development%20and%20Deployment.png)](https://blog.rheinwerk-computing.com/ethical-considerations-in-ai-development-and-deployment) [Software Development](https://blog.rheinwerk-computing.com/tag/software-development) ## [Ethical Considerations in AI Development and Deployment](https://blog.rheinwerk-computing.com/ethical-considerations-in-ai-development-and-deployment) Artificial Intelligence (AI) has the potential to transform industries, revolutionize healthcare, enhance productivity, and even tackle some of the... ![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/ethical-considerations-in-ai-development-and-deployment) [![Exploring JSON and Python](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Exploring%20JSON%20and%20Python.png?height=600&name=Exploring%20JSON%20and%20Python.png)](https://blog.rheinwerk-computing.com/exploring-json-and-python) [Python](https://blog.rheinwerk-computing.com/tag/python) ## [Exploring JSON and Python](https://blog.rheinwerk-computing.com/exploring-json-and-python) Python and JSON together form a dream team. To process JSON documents, you must import the json module. This module comes with Python by default and... ![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-json-and-python) [![The Principles of Object-Oriented Programming](https://blog.rheinwerk-computing.com/hs-fs/hubfs/The%20Principles%20of%20Object-Oriented%20Programming.png?height=600&name=The%20Principles%20of%20Object-Oriented%20Programming.png)](https://blog.rheinwerk-computing.com/the-principles-of-object-oriented-programming) [JavaScript](https://blog.rheinwerk-computing.com/tag/javascript) ## [The Principles of Object-Oriented Programming](https://blog.rheinwerk-computing.com/the-principles-of-object-oriented-programming) Object-oriented programming is based on four essential principles. ![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/the-principles-of-object-oriented-programming) [![Getting Started with GitLab](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Getting%20Started%20with%20GitLab.png?height=600&name=Getting%20Started%20with%20GitLab.png)](https://blog.rheinwerk-computing.com/getting-started-with-gitlab) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [Getting Started with GitLab](https://blog.rheinwerk-computing.com/getting-started-with-gitlab) With Microsoft’s acquisition of GitHub in June 2018, it once again became clear that cloud services and thus also the data stored there can quickly... ![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-gitlab) [![Getting Started with Kubernetes](https://blog.rheinwerk-computing.com/hs-fs/hubfs/Getting%20Started%20with%20Kubernetes.png?height=600&name=Getting%20Started%20with%20Kubernetes.png)](https://blog.rheinwerk-computing.com/getting-started-with-kubernetes) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [Getting Started with Kubernetes](https://blog.rheinwerk-computing.com/getting-started-with-kubernetes) Kubernetes has revolutionized the way developers deploy, manage, and scale containerized applications. ![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-kubernetes) [![What Is a Convolutional Neural Network?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20a%20Convolutional%20Neural%20Network.png?height=600&name=What%20Is%20a%20Convolutional%20Neural%20Network.png)](https://blog.rheinwerk-computing.com/what-is-a-convolutional-neural-network) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is a Convolutional Neural Network?](https://blog.rheinwerk-computing.com/what-is-a-convolutional-neural-network) A convolutional neural network (CNN) is a special multilayer network consisting of a detection part and an identification part. ![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-convolutional-neural-network) [![How to Use Efficient and Simple CSS](https://blog.rheinwerk-computing.com/hs-fs/hubfs/How%20to%20Use%20Efficient%20and%20Simple%20CSS.png?height=600&name=How%20to%20Use%20Efficient%20and%20Simple%20CSS.png)](https://blog.rheinwerk-computing.com/how-to-use-efficient-and-simple-css) [HTML & CSS](https://blog.rheinwerk-computing.com/tag/html-css) ## [How to Use Efficient and Simple CSS](https://blog.rheinwerk-computing.com/how-to-use-efficient-and-simple-css) Using CSS can make your web development life easier. In this blog post, we present a little guide on how to write the most efficient and simple CSS... ![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-use-efficient-and-simple-css) [![The Grafana-Docker Setup](https://blog.rheinwerk-computing.com/hs-fs/hubfs/The%20Grafana-Docker%20Setup.png?height=600&name=The%20Grafana-Docker%20Setup.png)](https://blog.rheinwerk-computing.com/the-grafana-docker-setup) [DevOps](https://blog.rheinwerk-computing.com/tag/devops) ## [The Grafana-Docker Setup](https://blog.rheinwerk-computing.com/the-grafana-docker-setup) In this blog post, we’ll describe a Docker setup in which Grafana works with a database and a collector. ![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/the-grafana-docker-setup) [![What Is the Spring Expression Language (SpEL)?](https://blog.rheinwerk-computing.com/hs-fs/hubfs/What%20Is%20the%20Spring%20Expression%20Language.png?height=600&name=What%20Is%20the%20Spring%20Expression%20Language.png)](https://blog.rheinwerk-computing.com/what-is-the-spring-expression-language) [What Is?](https://blog.rheinwerk-computing.com/tag/what-is) ## [What Is the Spring Expression Language (SpEL)?](https://blog.rheinwerk-computing.com/what-is-the-spring-expression-language) In Spring, the *Spring Expression Language (SpEL)* provides a powerful syntax for querying and manipulating objects at runtime. ![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-spring-expression-language) - - [1](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/1) - [...](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/15) - [18](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/18) - [19](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/19) - [20](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/20) - [21](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/21) - [22](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/22) - [...](https://blog.rheinwerk-computing.com/author/rheinwerk-computing/page/25) - [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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