Language Selection

English French German Italian Portuguese Spanish

Programming Leftovers

Filed under
Development

  • Anti-patterns You Should Avoid in Your Code

    Every developer wants to write structured, simply planned, and nicely commented code. There are even a myriad of design patterns that give us clear rules to follow, and a framework to keep in mind.

    But we can still find anti-patterns in software that was written some time go, or was written too quickly.

    A harmless basic hack to resolve an issue quickly can set a precedent in your codebase. It can be copied across multiple places and turn into an anti-pattern you need to address.

  • AsmREPL: Wing your way through x86-64 assembly language • The Register

    Ruby developer and internet japester Aaron Patterson has published a REPL for 64-bit x86 assembly language, enabling interactive coding in the lowest-level language of all.

    REPL stands for "read-evaluate-print loop", and REPLs were first seen in Lisp development environments such as Lisp Machines. They allow incremental development: programmers can write code on the fly, entering expressions or blocks of code, having them evaluated – executed – immediately, and the results printed out. This was viable because of the way Lisp blurred the lines between interpreted and compiled languages; these days, they're a standard feature of most scripting languages.

    Patterson has previously offered ground-breaking developer productivity enhancements such as an analogue terminal bell and performance-enhancing firmware for the Stack Overflow keyboard. This only has Ctrl, C, and V keys for extra-easy copy-pasting, but Patterson's firmware removes the tedious need to hold control.

  • Wasmer 2.1 WebAssembly Implementation Adds Virtual Filesystem, Lisp + Crystal Support - Phoronix

    Wasmer as "the universal WebAssembly runtime" that focuses on being able to run WASM code on any platform is out with its next major release.

    Released this summer was Wasmer 2.0 as a step forward for this open-source WASM implementation. The project remains focused on trying to compile "everything" to WebAssembly and to then run that on any operating system / platform or embed it in other languages or run it in a web browser. Wasmer 2.1 was released today as the next major iteration of the platform.

  • What's The Big Deal With Linux Capabilities? | Hacker Noon

    The prevalent perception is that Linux users benefit from and exercise privileges, however this is not the case. It's the process or executable that runs in a certain user context and exercises rights (permission to carry out to perform the privileged operations guarded by Linux kernel).

  • Built with the Rust programming language – LinuxBSDos.com

    Not too long ago, the talk in developer circles seemed to be mainly about Go, Go, Go, Go… I’m referring, of course, to the programming language from Google.  

  • Perl Weekly Challenge 141: Number Divisors and Like Numbers
  • Closures

    A casual remark about closures which I made in My Favorite Warnings: redefine touched off a long off-topic exchange with Aristotle that I thought ought to be promoted to a top-level blog entry. The big thing I learned was that any Perl subroutine can be a closure. The rest of this blog will try to make clear why I now believe this. The words are my own, as are any errors or misconceptions.

    The second sentence of Wikipedia's definition of a closure says "Operationally, a closure is a record storing a function together with an environment." This makes it sound a lot like an object, and therefore of little additional interest in an O-O environment.

    But I came to closures pragmatically through Perl, and to me they were a magic way to make data available somewhere else. All I had to do was get a code reference where it needed to be, and any external lexical variables got the values at the time the reference was taken. So much I understood up to the fatal blog post, and it sufficed for my simple needs.

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.