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Programming: Rust, Java, C and More

Submitted by Rianne Schestowitz on Tuesday 26th of November 2019 05:59:58 AM Filed under
Development
  • Federico Mena-Quintero: Moving gnome-shell's styles to Rust

    Gnome-shell uses CSS processing code that dates from HippoCanvas, a CSS-aware canvas from around 2006. It uses libcroco to parse CSS, and implements selector matching by hand in C.

    This code is getting rather dated, and libcroco is unmaintained.

    I've been reading the code for StTheme and StThemeNode, and it looks very feasible to port it gradually to Rust, by using the same crates that librsvg uses, and eventually removing libcroco altogether: gnome-shell is the last module that uses libcroco in distro packages.

  • Develop a Kubernetes controller in Java

    The official Kubernetes Java SDK project recently released their latest work on providing the Java Kubernetes developers a handy Kubernetes controller-builder SDK which is helpful for easily developing advanced workloads or systems.

    [...]

    If you notice, the new Java controller framework learnt a lot from the design of controller-runtime which successfully encapsulates the complex components inside controller into several clean interfaces. With the help of Java Generics, we even move on a bit and simply the encapsulation in a better way.

    As for more advanced usage, we can wrap multiple controllers into a controller-manager or a leader-electing controller which helps deploying in HA setup. In a word, we can basically find most of the equivalence implementations here from Golang SDK and more advanced features are under active development by us.

  • p2k19 Hackathon Report: Stefan Sperling on iwm(4) wifi progress, more

    My main goal for the p2k19 hackathon was 9260 device support in iwm(4). Firmware updates for previous device generation were an important prerequisite step. One day before p2k19, the oldest generation of hardware supported by the iwm(4) driver was switched to latest available firmware images.

  • Extreme C book extract: Exploring structures and user-defined types in C

    In his new book, Extreme C (left), Kamran Amini outlines the essential features of the language before moving onto encapsulation and composition, synchronisation, as well as advanced programming – with code samples – and integration with other languages, including C++, Java, and Python.

    This extract, exclusive to Developer, explores structures within C, as well as touching on the reasons behind the almost 50-year-old language’s continued longevity.

  • HTTP/3 Support Added to cURL in Gentoo

    HTTP/3 may still be in the draft state but that isn’t stopping software from adding support for it. As a Gentoo developer, I decided to maintain Gentoo’s reputation for not being one to shy away from the bleeding edge by adding (optional) support for HTTP/3 to cURL. I believe that this makes Gentoo the first Linux distribution to ship support for this new protocol outside of the Firefox and Chrome/Chromium browsers.

    cURL is a command line tool as well a library (libcurl) that is used by a wide variety of software. It’s commonly used by applications written in php, it’s used by the Kodi media center, and it’s at least an optional dependency of everything from git to systemd to cmake and dovecot. By adding support for HTTP/3 to cURL, potentially everything that uses cURL will also instantly also start supporting HTTP/3.

    cURL added HTTP/3 support in version 7.66.0. Rather than writing the entirety of large, complex, and evolving HTTP/3 protocol implementation again (and having to maintain that forever), cURL instead leverages libraries. The two options it currently supports for this purpose are quiche and the combination of ngtcp2 and nghttp3.

»

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today's howtos

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    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.

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