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Programming Leftovers

Submitted by Roy Schestowitz on Wednesday 30th of September 2020 07:10:22 AM Filed under
Development
  • Lex Fridman Talks to Gosling, Kernighan and Knuth

    As editor of I Programmer, I'm keen on the history of computer programming and this week I've come across a new resource - a series of podcasts in which Lex Fridman interviews some of the biggest names in computer science.

    The Lex Fridman Podcast was formerly known as The Artificial Intelligence Podcast and the first one dates from April 2018. They are all conducted by Lex Fridman, an AI researcher at MIT. Fridman does have some specifically AI-oriented interviews, there's one with Andrew Ng, for example.

    The one that alerted me to the series, however, was one posted on You Tube a week ago with James Gosling, the creator of the Java Language and is the one hundred and twenty sixth in the series.

  • Git Worktrees: Parallel Development Guide

    Under specific scenarios, you may require different identical copies of your repository. At this point, you are probably thinking about cloning your storage – but there is a better solution.

    Git offers a better and more reliable workflow model – Git worktree. It gives a perfect copy of your entire repository.

    In this article, I will explain all you need to know about worktree and how you can use it step-by-step with the Git best practices. And once you know all these basics, Git Worktree will be relatively easy to implement as compared to other practices like cloning with Git Clone your repository.

  • How to use C++ String Class

    A string literal is a sequence of characters in a constant array pointer terminated by the nul character, \0. When identified, by a variable, the string literal cannot really reduce or increase in length. Many operations cannot be done on the string literal. So, there is a need for a string class. The C++ string class is for a data structure, a collection of characters in sequence, which allows member functions and operators to act on the characters. The string class allows more manipulations on the corresponding string literal, than just the string literal. You need to have good knowledge of string literal, to understand this article.

  • Reading and Writing Files with Python

    Files are used to store and organize data on a disk. We often use files when we need to store data permanently on a hard disk. For example, say we are building a software system that maintains student records. Now, we need to store the student data permanently for future use. For this purpose, we can use files to store data, and later on, we can open these files and access the stored data at any time.

    Reading and writing files are very common functions in Python. It is easy to create, read, and edit files in Python. Python comes with built-in functions for reading and writing files. You can open, write, and read files using the Python built-in functions.

  • Simple k-NN FPS Tanimoto and cosine similarity search

    Yesterday I developed an simple program to search chembl_27.fps.gz for records with a Tanimoto similarity of at least 0.7 to caffeine. I started by mentioning the 1986 paper by Willet, Winterman, and Bawden Implementation of nearest-neighbor searching in an online chemical structure search system. As you can read from the title, that paper does a k-nearest neighbor search (k-NN search, also called a top-N search), and compares a Tanimoto similarity search to a cosine similarity search. So really, I'm only halfway there. In this essay I'll go the other half and implement the nearest neighbor search. As before, this code will do almost no error handling, and will only work for the uncompressed chembl_27.fps in the local directory.

  • Python Qt5 - Use QStandardItem with Images.

    This tutorial show you how to use QStandardItem with Images.

  • Python Print Function

    Python is one of the modern, multi-purpose, and high-level programming languages. Python is used for various purposes i.e. software development, data science, machine learning, artificial intelligence, deep learning, and back end development. More often, in any programming language, we need to print some data or string on the console. In python, we use the print () function to print the string or any kind of data on the console.

  • Linux-Fu: Making AWK A Bit Easier

    awk is a kind of Swiss Army knife for text files. However, some of its limitations are often a bit annoying. I’ve used a simple set of functions to make awk a bit better, although I will warn you: it does require GNU extensions to awk. That is, you must use gawk and not other versions. Your system probably maps /usr/bin/awk to something and that something might be gawk. But it could also be mawk or some other flavor. If you use a Debian-based distro, update-alternatives is your friend here. But for the purposes of this post, I’m going to assume you are using gawk.

  • Perl Weekly Challenge 80: Smallest Positive Number Bits and Count Candies

    These are some answers to the Week 80 of the Perl Weekly Challenge organized by Mohammad S. Anwar

  • Ubuntu + Perl Web Development Environment Building

    I wrote here the steps to build a web system development environment using Perl and Ubuntu.

  • A private not official branch for Perl 7 by several members of perl porters

    I found A private not official branch for Perl 7 by several members of perl porters.

»

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Dilution and Misuse of the "Linux" Brand

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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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