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Programming Leftovers

Submitted by Roy Schestowitz on Monday 21st of March 2022 08:29:02 AM Filed under
Development

  • Golang Context

    One of the most useful features in the Go programming language is contexts. Context provides versatile features for applications such as sharing data, caller cancellations, deadlines, etc.
    Context are so useful that many libraries in the go ecosystem use them. You will also find them in applications that interact with remote servers, databases, API calls and more.

    For this article, we will provide a beginner introduction to the context package in Go and how to use context for various use cases.

  • Ftell Function in C

    Like many other programming languages, the C language came up with many in-built functions. These functions have been added within the C language to perform different functions at different levels.

    One of the functions is the “ftell()” function of the C filing concept. This function is most probably used to read the existing file location of the provided stream relative to the file’s beginning. Upon shifting the document pointer to the last location of the document, this method is being rummage-sale to retrieve the overall size of the dataset. The present location is returned in long format, and the document can contain over 32767 bytes of information. Thus, we have decided to cover the C ftell() in Ubuntu 20.04 system.

    Start with Ubuntu’s terminal launch, i.e., Ctrl+Alt+T. We have to make a new text file in the home folder of our Ubuntu system. Make use of touch instruction to do so. Go towards the home folder of your Linux system and open the newly created file by double-tapping on it. Add some text data in it, save and close it.

    You can see we have created the file.txt file and added the below-shown data in it. We will be utilizing this file in our near-to-come examples.

  • If Statement Rust

    Decision-making is a critical factor when building a non-trivial program. Like most programming languages, Rust provides us with the if and if-else statements construct to implement decisions in our programs.

    The crux of this article is to help you understand how to implement and work with conditional statements in Rust.

  • Where the time went during a "laptop" coding interview

    It wasn't after disconnecting from the problem and spending some time away from the computer that it came to me and I figured it out.

    What's that? You don't have the time to disconnect and then come back to it, because you're being timed, and they're coming to check in on you soon? Too bad! Good luck figuring out where you went wrong.

    That. That right there is where the time goes.

  • Python finally offloads some batteries

    Python has often been touted as a "batteries included" language because of its rich standard library that provides access to numerous utility modules and is distributed with the language itself. But those libraries need maintenance, of course, and that is provided by the Python core development team. Over the years, it has become clear that some of the modules are not really being maintained any longer and they probably are not really needed by most Python users—either because better alternatives exist or because they address extremely niche use cases. A long-running project to start the removal of those modules has recently been approved.

  • Rakudo compiler, Release #154 (2022.03)

    On behalf of the Rakudo development team, I’m very happy to announce the March 2022 release of Rakudo #154. Rakudo is an implementation of the Raku1 language.

»

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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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