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Programming Leftovers

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Development

  • Automotive Grade Maps and Navigation for Everyone

    It is our pleasure to introduce a shiny new Maps & Navigation solution for QML developers!

    This QML plugin is a joint effort between KDAB & General Magic to bring the excellent General Magic Maps and Navigation SDK to the QML world.

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  • Steinar H. Gunderson: Optimization silver bullets

    If you work with optimizing code for a while, you'll notice that a fairly common pattern is for people to believe in optimization silver bullets; just one trick that they think is always the solution for whatever woes you may have. It's not that said thing is bad per se, it's just that they keep suggesting the same thing over and over even if that's not actually the issue.

    To name some examples: I've seen people suggesting removing mallocs is always the case (even if malloc didn't show up on the profile), or that adding likely() and unlikely() everywhere would double the IPC of a complex system (PGO, with near-perfect condition probabilities, gave 5%), or designed a system entirely around minimizing instruction cache pressure (where the system they intended to replace didn't have issues with instruction cache). And I guess we've all seen the people insisting on optimizing their code on -O9, because higher is better, right, and who are the GCC people to compile their own code with -O2 anyway?

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  • My proposal for scaling open source: don’t

                     

                       

    Growth hacking and lowest common denominator experiences are their problems, so we should avoid making them our problems, too. We already have various tools for enabling growth: the freedom to use the software for any purpose being one of the most powerful. We can go the other way and provide deeply-specific experiences that solve a small collection of problems incredibly well for a small number of people. Then those people become super-committed fans because no other thing works as well for them as our thing, and they tell their small number of friends, who can not only use this great thing but have the freedom to study how the program works, and change it so it does their computing as they wish—or to get someone to change it for them. Thus the snowball turns into an avalanche.

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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.