Language Selection

English French German Italian Portuguese Spanish

Programming Leftovers

Submitted by Roy Schestowitz on Friday 25th of February 2022 11:12:00 AM Filed under
Development
  • Data Oriented Design, a.k.a. Lower Level Programming?

    I’m not sure if this title is clickbaity, but it certainly summarizes some of the impressions I wanted to write about.

    Yesterday I watched Andrew Kelley’s fun talk on Practical Data Oriented Design — do check it out! — and this post will contain some “spoilers” (as in, I will discuss his takeaways). I was drawn to the talk for two reasons: first, because I wanted to check if I was up-to-date on my programming TLAs, but also because he starts by talking about how he felt he had been stuck in a plateau as a programmer for the past decade — a feeling I’m sure many of us have felt at times! — and how this new knowledge got him out of it.

    The bulk of the talk, and his takeways on refactoring his Zig compiler to use Data Oriented Design, is on how to get better runtime performance by making data structures smaller, so they are easier on the cache.

  • Server-Sent Events, WebSockets, and HTTP

    The orange site is currently discussing an article about Server-Sent Events, especially as compared with WebSockets (and the emerging WebTransport). Both the article and discussion are well-informed, but I think they miss out on one aspect that has fairly deep implications.

  • Why I like Clojure

    This is somewhat of a response to Uncle Bob's post of similar nature, which I would say has gotten a mixed to positive reception. I had planned a similar post a week or two before the release of his, but archived the idea upon reading his post. But after having read it over a couple of times I have now decided that I still have something meaningful to write. What follows are the purely subjective reasons for which I enjoy using Clojure. Some have criticised Bob for being very absolute and not giving up any screen estate for more nuanced viewpoints, something I will try to avoid.

  • A Short Treatise on Bugs

    First a term: by “treatise”, I’m not saying this newsletter is comprehensive, persuasive, or even correct. I’m using it to mean a very specific type of writing, one that presents an idea and its consequences without trying to convince people of that idea. I don’t even know if I’m convinced by the idea. I just want to see if I can communicate a specific idea, and if people understand it but reject it, I’m happy.1

  • Results without all of the brackets

    Yesterday, I put forth a bunch of API possibilities for the problem of needing to return a value but also indicating the lack of a value and being able to comment on why. In it, the notion of a "wrapper" around a string was presented, such that it might look like "Result<string>", and those brackets started looking like a pain. There was also the possibility of having something like "ResultString", but didn't that open the door to having a bunch of code duplication?

  • Returning values and errors

    If you agree with the notion that you need to be able to tell the difference between the absence of a value and a value itself, then this has some impacts on the code you write. If you want to keep 'em separated (so they can come out and play), then it gets you looking at your API designs in certain ways.

    These are my reactions to some of the ways a value can be returned (or not).

  • Python's Global Interpreter Lock is not there for Python programmers

    These days, I've come to feel that the Global Interpreter Lock is not really for Python programmers. Who the GIL is for is the authors of CPython packages that are written in C (or in general any compiled language). The GIL broadly allows authors of those packages to not implement any sort of locking in their own code, even when they're manipulating C level data structures, because they're guaranteed that their code will never be called concurrently or in parallel. This extends to the Python standard objects themselves, so that (in theory) Python dicts don't need any sort of internal locks in order to avoid your CPython process dumping core or otherwise malfunctioning spectacularly. Concurrency only enters into your CPython extension if you explicitly release the GIL, and the rules of the CPython API make you re-take the GIL before doing much with interpreter state.

  • How To Read A CSV File In Python

    I first began to work with CSV files when taking the backend portion of my software engineering bootcamp curriculum. It wasn’t until I began to dive more into the data science portion of my continued learning that I began to use them on a regular basis.

  • Python support for regular expressions

    Regular expressions are a common feature of computer languages, especially higher-level languages like Ruby, Perl, Python, and others, for doing fairly sophisticated text-pattern matching. Some languages, including Perl, incorporate regular expressions into the language itself, while others have classes or libraries that come with the language installation. Python's standard library has the re module, which provides facilities for working with regular expressions; as a recent discussion on the python-ideas mailing shows, though, that module has somewhat fallen by the wayside in recent times.

»

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.

More on Tux Machines: About ● Gallery ● Forum ● Blogs ● Search ● News ● RSS Feed

Part of Bytes Media ● Sister sites below.

TechBytes Techrights button

Powered by Drupal, an open source content management system

Content available under CC-BY-SA CC

© by original authors

Powered by CentOS 6.5 (GNU/Linux), Varnish, and Drupal 6