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Mozilla: Rust, JS, CSS, and Secret Firefox Tips

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Moz/FF
  • Announcing Rustup 1.24.3

    The rustup working group is happy to announce the release of rustup version 1.24.3. Rustup is the recommended tool to install Rust, a programming language that is empowering everyone to build reliable and efficient software.

  • Implementing Private Fields for JavaScript

    When implementing a language feature for JavaScript, an implementer must make decisions about how the language in the specification maps to the implementation. Sometimes this is fairly simple, where the specification and implementation can share much of the same terminology and algorithms. Other times, pressures in the implementation make it more challenging, requiring or pressuring the implementation strategy diverge to diverge from the language specification.

    Private fields is an example of where the specification language and implementation reality diverge, at least in SpiderMonkey– the JavaScript engine which powers Firefox. To understand more, I’ll explain what private fields are, a couple of models for thinking about them, and explain why our implementation diverges from the specification language.

    [...]

    The most basic mental model one can have for private fields is what it says on the tin: fields, but private. Now, JS fields become properties on objects, so the mental model is perhaps ‘properties that can’t be accessed from outside the class’.

    However, when we encounter proxies, this mental model breaks down a bit; trying to specify the semantics for ‘hidden properties’ and proxies is challenging (what happens when a Proxy is trying to provide access control to properties, if you aren’t supposed to be able see private fields with Proxies? Can subclasses access private fields? Do private fields participate in prototype inheritance?) . In order to preserve the desired privacy properties an alternative mental model became the way the committee thinks about private fields.

  • Dennis Schubert: WebCompat Tale: CSS Flexbox and the order of things

    Have you thought about the order of things recently? Purely from a web development perspective, I mean.

    The chances are that you, just like me, usually don’t spend too much time thinking about the drawing order of elements on your site when writing HTML and CSS. And that’s generally fine because things usually just feel right.

  • 11 secret tips for Firefox that will make you an internet pro

    With Firefox, getting around the internet is fast, straight-forward and easy. Now you can go beyond the basics with these secret and not-so-secret tricks that make your internetting experience even more fun. Read on for some of our favorite Firefox features that you may not know about… yet.

    [...]

    Tab hoarders, we see you. Heck, we are you. Don’t ever let anyone shame you for having dozens (and dozens3) of open tabs, implying you don’t have it together and can’t find the right one. Instead, dazzle them with this trick. Add a % sign to your URL search to search specifically through all your open tabs, including tabs in different windows. Then you can click over to the already open tab instead of creating a duplicate, not that anyone has ever done that.

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.