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191 Posts
  • Published Tutorial

    How To Set Up a Node.js Application for Production on Ubuntu 20.04

    Node.js is an open-source JavaScript runtime environment for building server-side and networking applications. The platform runs on Linux, macOS, FreeBSD, and Windows. Though you can run Node.js applications at the co...
    By Lisa Tagliaferri, Kathleen Juell Node.js Applications Nginx
  • Published Tutorial in Series: How To Code in Python

    How To Write Doctests in Python

    Python’s standard library comes equipped with a test framework module called doctest. The doctest module programmatically searches Python code for pieces of text within comments that look like interactive Python sessi...
    By Lisa Tagliaferri Python Development
  • Published Tutorial in Series: How To Code in JavaScript

    Understanding Comparison and Logical Operators in JavaScript

    The field of computer science has many foundations in mathematical logic. If you have a familiarity with logic, you know that it involves truth tables, Boolean algebra, and comparisons to determine equality or differe...
    By Lisa Tagliaferri JavaScript Development
  • Published Tutorial in Series: How To Code in JavaScript

    How To Add JavaScript to HTML

    This tutorial will go over how to incorporate JavaScript into your web files, both inline into an HTML document and as a separate file.
    By Lisa Tagliaferri JavaScript Development
  • Published Tutorial

    What is Debugging?

    In computing, debugging is the process of looking for and then resolving issues that prevent software from running correctly. Software bugs refer to an error or fault in the codebase that leads to an unexpected result...
    By Lisa Tagliaferri Glossary
  • Published Tutorial in Series: How To Code in Python

    Understanding Boolean Logic in Python 3

    The Boolean data type can be one of two values, either True or False. We use Booleans in programming to make comparisons and to control the flow of the program. In this tutorial, we’ll go over the basics you’ll need t...
    By Lisa Tagliaferri Python Development
  • Published Tutorial

    What is Linux?

    Generally, Linux refers to a group of open-source operating system distributions built around the Linux kernel. In the strictest sense, Linux refers only to the presence of the kernel itself. Linus Torvalds first rele...
    By Lisa Tagliaferri Linux Basics Glossary Cloud Computing
  • Published Tutorial

    What is Python?

    Python is a flexible programming language that prioritizes the clarity and readability of code. A good choice for many software development use cases, Python is often used for scripting, automation, data analysis, [ma...
    By Lisa Tagliaferri Python Glossary
  • Published Tutorial

    A Linux Command Line Primer

    This tutorial will provide users who are new to terminal environments with the basics of using a command-line interface, providing a primer for understanding how to use Linux cloud servers.
    By Lisa Tagliaferri Linux Basics Spin Up Cloud Computing Interactive Linux Commands
  • Published Tutorial

    How To Convert Integers to Floats in Python 3

    Python’s float() method will convert integers to floats. This is a quick tutorial on converting floats to integer numbers.
    By Lisa Tagliaferri Python Development
  • Published Answer

    Using D.O. to teaching a data management course?

    Hi Barry, Thank you for your question. We are building out many resources for educators at this time and have a variety of [less…
    By ltagliaferri
  • Published Tutorial

    How To Convert Strings to Integers in Python 3

    Strings can be converted to integers by using the int() method. If your string does not have decimal places, you’ll most likely want to convert it to an integer by using the int() method. In this quick tutorial, you'l...
    By Lisa Tagliaferri Python Development
  • Published Tutorial

    How To Convert Integers to Strings in Python 3

    We can convert numbers to strings using the str() method. In this quick tutorial, you'll learn how to use this method to convert integers to strings.
    By Lisa Tagliaferri Python Development
  • Published Tutorial in Series: How To Code in Python

    How To Convert Data Types in Python 3

    This Python 3 tutorial will guide you through converting data types including numbers, strings, tuples and lists, as well as provide examples to help familiarize yourself with different use cases.
    By Lisa Tagliaferri Python Development
  • Published Tutorial in Series: An Introduction to Open Source

    How To Use Git: A Reference Guide

    This cheat sheet-style guide provides a quick reference to some of the more common Git commands you may use when managing repositories and collaborating on software.
    By Lisa Tagliaferri Git Open Source Development
  • Published Tutorial

    How To Install WordPress on Ubuntu 20.04 with a LAMP Stack

    WordPress is an extremely popular open-source technology and WordPress sites represent 36% of all websites that are currently online. This tutorial is intended for those who are comfortable with system administration ...
    By Lisa Tagliaferri WordPress Ubuntu 20.04 Ubuntu LAMP Stack
  • Published Tutorial

    Recommended Security Measures to Protect Your Servers

    When setting up infrastructure, getting your applications up and running will often be your primary concern. However, making your applications to function correctly without addressing the security needs of your infras...
    By Justin Ellingwood, Lisa Tagliaferri, Jamon Camisso, dbrian Security Firewall Conceptual Networking VPN
  • Published Tutorial

    How To Build a Node.js Application with Docker on Ubuntu 20.04

    The Docker platform allows developers to package and run applications as containers. A container is an isolated process that runs on a shared operating system, offering a lighter weight alternative to virtual machines...
    By Lisa Tagliaferri, Kathleen Juell Node.js Docker Applications
  • Published Tutorial

    How To Install TensorFlow on Ubuntu 20.04

    An open-source machine learning software library, TensorFlow is used to train neural networks. Follow this tutorial to install TensorFlow in a Python virtual programming environment.
    By Lisa Tagliaferri Machine Learning Data Analysis Python Development
  • Published Tutorial

    How To Install Git from Source on Ubuntu 20.04 [Quickstart]

    This tutorial will walk you through installing and configuring Git from source on an Ubuntu 20.04 server.
    By Lisa Tagliaferri Git Open Source