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Programming/Development Leftovers

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  • Start programming in Racket by writing a "guess the number" game

    I am a big advocate of learning multiple programming languages. That's mostly because I tend to get bored with the languages I use the most. It also teaches me new and interesting ways to approach programming.

  • Daniel Stenberg: curl your own error message

    The --write-out (or -w for short) curl command line option is a gem for shell script authors looking for more information from a curl transfer. Experienced users know that this option lets you extract things such as detailed timings, the response code, transfer speeds and sizes of various kinds. A while ago we even made it possible to output JSON.

  • Daniel Stenberg: What if GitHub is the devil? [Ed: Daniel Stenberg of Curl trying to defend outsourcing his project to Microsoft... and to a proprietary software monopoly]

    While git is open source, GitHub is a proprietary system. But the thing is that even if we would go with a competitor and get our code hosting done elsewhere, our code would still be stored on a machine somewhere in a remote server park we cannot physically access – ever. It doesn’t matter if that hosting company uses open source or proprietary code. If they decide to switch off the servers one day, or even just selectively block our project, there’s nothing we can do to get our stuff back out from there.

    We have to work so that we minimize the risk for it and the effects from it if it still happens.

    A proprietary software platform holds our code just as much hostage as any free or open source software platform would, simply by the fact that we let someone else host it. They run the servers our code is stored on.

  • LLVM 12.0-RC1 Available For Testing This Latest Open-Source Compiler

    Following the LLVM 12 code branching earlier this week, the first release candidate of the forthcoming LLVM 12.0 is now available for testing.

    As noted in that earlier article, LLVM 12 is bringing many big ticket items like the x86-64 microarchitecture feature level support in conjunction with the GCC/GNU camp, Intel Alder Lake and Sapphire Rapids support, initial AMD Zen 3 support, squaring away C++20 support, and improvements to Clangd and other LLVM toolchain components. LLVM 12 is shaping up to be another great half-year update to this open-source compiler toolchain that is widely used throughout the industry.

  • Static analysis updates in GCC 11 - Red Hat Developer

    I work at Red Hat on the GNU Compiler Collection (GCC). In GCC 10, I added the new -fanalyzer option, a static analysis pass for identifying various problems at compile-time, rather than at runtime. The initial implementation was aimed at early adopters, who found a few bugs, including a security vulnerability: CVE-2020-1967. Bernd Edlinger, who discovered the issue, had to wade through many false positives accompanying the real issue. Other users also managed to get the analyzer to crash on their code.

    I’ve been rewriting the analyzer to address these issues in the next major release, GCC 11. In this article, I describe the steps I’m taking to reduce the number of false positives and make this static analysis tool more robust.

  • Qt Online Installer 4.0.1-1 Released

    We are proud to announce that Qt Online Installer and Maintenance Tool 4.0.1-1 have been released today. This version allows open-source users to select a mirror to download packages and their metadata. In addition, a bunch of fixes have been done to the installer UI.

  • Excellent Free Tutorials to Learn Eiffel

    Eiffel is an object-oriented programming language designed by Bertrand Meyer (an object-orientation proponent and author of Object-Oriented Software Construction) and Eiffel Software.

  • CommonJS to ESM in Node.js
  • An introduction to SciPy

    SciPy is a collection of Python libraries for scientific and numerical computing. Nearly every serious user of Python for scientific research uses SciPy. Since Python is popular across all fields of science, and continues to be a prominent language in some areas of research, such as data science, SciPy has a large user base. On New Year's Eve, SciPy announced version 1.6 of the scipy library, which is the central component in the SciPy stack. That release gives us a good opportunity to delve into this software and give some examples of its use.

    What is SciPy?

    The name SciPy refers to a few related ideas. It is used in the titles of several international conferences related to the use of Python in scientific research. It is also the name of the scipy library, which contains modules for use in various areas of scientific and numerical computing.

  • Python List Comprehension: What it is, how it works, and examples

    In mathematics, there’s a concept called set-builder notation, also called set comprehension. Inspired by this principle, Python offers list comprehensions, too. In fact, the Python list comprehension is one of the defining features of the language. It allows us to create concise, readable code that outperforms the uglier alternatives like for loops or using map().

    We’ll first look at the most well-known type: list comprehensions. Once we’ve got a good grasp of how they work, you’ll also learn about set comprehensions and dictionary comprehensions.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.