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today's leftovers

Submitted by Roy Schestowitz on Thursday 31st of March 2022 08:56:31 PM Filed under
Development
Microsoft
Misc
  • How to Concatenate columns in PySpark DataFrame

    In Python, PySpark is a Spark module used to provide a similar kind of Processing like spark using DataFrame. We can concatenate two or more columns in a DataFrame using two methods. They are concat() and concat_ws(). These are the methods available in pyspark.sql.functions module. Before going to know these methods, let’s create a PySpark DataFrame.

  • 17 Top YouTube Channels to learn Flutter development for beginners and experts

    Flutter is a trending open-source UI software development kit for building cross-platform apps for mobile, desktop, and the web.

    It is originally developed by Google to help developers use a single codebase for building multiplatform apps. Flutter is released under the new BSD license, and it is written in Dart, C, and C++ languages.

  • Extended lifetime for Qt 5.15

    We know our customers will keep using 5.15 for a long time as product life cycles, especially embedded business, are sometimes very long. The Qt Company has decided to extend the Qt 5.15 Long Term Support (LTS) with patch releases to five years, prolonging the life of Qt 5.15 until 26 May 2025. This extension of the LTS is available for those with subscription licenses.

  • Qt for MCUs 2.1 released

    We're excited to announce that Qt for MCUs 2.1 is now available! This release offers new options to decrease your application's footprint, a new text rendering feature, and new examples and documentation to help you during development.

  • Windows 11 growth at a standstill amid stringent hardware requirements [Ed: Dishonest excuses and Microsoft spin]

    The growth of Microsoft's flagship operating system, Windows 11, appears to be slowing if figures from AdDuplex are to be believed.

    Instead, Windows 10 continues to dominate, an indicator that either users are not upgrading or – and this is probably more likely – Microsoft's stringent hardware compatibility requirements are keeping the operating system off users' PCs.

»

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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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