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Programming Leftovers

Submitted by Roy Schestowitz on Wednesday 16th of June 2021 01:02:14 AM Filed under
Development

  • The curious world of check digits

    In many standardised numerical codes, one or more digits are special. They're called check digits and they can be used to check that the code hasn't changed due to human or computer error.

    For example, my Australian Business Number, or ABN, is 42 021 773 747. The last nine digits are my unique identifier and the first two digits are for checking.

  • Tau Station considered Dangerous: Game Review

    I thought I’d try out Tau Station for a couple of days and get a quick blog post out of it. That was three months and 11 levels ago. It took 2 months to wind down my obsessive nature and if not for Tau, I could have pushed a couple of new module versions to CPAN by now. That’s rather the reason that I don’t play games in the first place, so I can’t give great comparisons.

  • Live streaming the release of Perl 5.35.1

    In my talk at The Perl and Raku Conference in the Cloud 2021, I already announced it. I'm doing the release of the Perl developer version 5.35.1, and you can watch it live Sunday, 20th June on Twitch.

  • Daniel Stenberg: What goes into curl?

    curl is a command line tool and library for doing Internet data transfers. It has been around for a loooong time (over 23 years) but there is still a flood of new things being added to it and development being made, to take it further and to keep it relevant today and in the future.

    I’m the lead developer and head maintainer of the curl project.

    How do we decide what goes into curl? And perhaps more importantly, what does not get accepted into curl?

    Let’s look how this works in the curl factory.

  • Announcing Aya

    Aya was built with a focus on developer experience and operability. It does not require a C toolchain to build and doesn't even require kernel headers. Compiling the crate in release mode takes only a few seconds.

  • Aya: writing BPF in Rust

    The first release of the Aya BPF library has been announced; this project allows the writing of BPF programs in the Rust language. "Over the last year I've talked with many folks interested in using eBPF in the Rust community. My goal is to get as many of you involved in the project as possible! Now that the rustc target has been merged, it's time to build a solid foundation so that we can enable developers to write great eBPF enabled apps".

  • Testing cameras with lc-compliance on KernelCI

    Earlier this month, the very first KernelCI sprint or "hackfest" was held virtually, with more than a dozen engineers & developers from different communities in attendance. Initiated as a joint effort by the Google Chrome OS team and Collabora, the sprint's main objective was to extend KernelCI's coverage, including adding new tests such as the ability to detect regressions on the Linux kernel that can directly affect cameras.

    With Linux powering so many things and in so many different settings, there's great interest in making sure that it runs well in as many of them. KernelCI fills this purpose with an ever-increasing amount of tests and environments. The media subsystem is of course no exception, and it's just been joined by a new test suite.

  • C++ Coroutines, or "why are the templates failing aaaaaAAAAAAA"

    Qt's networking code has always been one of its more obtuse parts, requiring using signals for something that didn't quite seem right for them. A linear flow of code would become a jumbled mess of member functions and signal connections.

    When developing Challah's netcode, I quickly realised this wasn't going to suffice for the large amount of it I was going to be writing. Thus begins my journey through signal hell, arriving at many bumps before I discovered that integrating Qt's networking stuff with coroutines is possible.

  • Please welcome Boxy, Léo Lanteri Thauvin and the8472 to compiler-contributors

    Please welcome Boxy, Léo Lanteri Thauvin and the8472 to the compiler-contributors group!

    Boxy has been working on pushing const generics forward by implementing parts of the const_evaluatable_checked feature, fixing bugs and making rustdoc work with const generics. Boxy is also a frequent contributor to #project-const-generics discussions and meetings.

    Léo Lanteri Thauvin has been a consistent contributor of refactorings and improvements to rustc. Recently, Léo has been implementing a Major Change Proposal to migrate the unsafe checker to operate on THIR instead of MIR.

  • 1.53.0 pre-release testing | Inside Rust Blog

    The 1.53.0 pre-release is ready for testing. The release is scheduled for this Thursday, June 17th. Release notes can be found here.

»

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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.

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