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This article will show you how to use the Python subprocess module to run external programs and scripts from Python. It is often necessary to call external applications from Python. Usually these are command-line applications which you can use to perform tasks outside of the Python environment,… Read More »Running External Programs in Python with subprocess [Examples]
The for…in loop in JavaScript loops over all of the properties in an object. This article will explain why and how to use it. JavaScript Objects JavaScript objects are a kind of variable which store the properties for an item you are representing in your code. For example, you may… Read More »for…in Loops in JavaScript – How to Use Them
The Node.removeChild() method removes HTML Element from the current page via the DOM. This article will show you how to use it. The DOM in JavaScript The HTML DOM (Document Object Model) is the interface which JavaScript uses to interact with HTML page elements, including adding, removing,… Read More »Remove Page Elements using JavaScript RemoveChild [Examples]
The Node.appendChild() method adds a new HTML Element to the page (via the DOM). This article will show you how to use it. The DOM in JavaScript The HTML DOM (Document Object Model) is the interface which JavaScript uses to read from and interact with HTML page… Read More »Use appendChild() in JavaScript to Add Page Elements [Examples]
This tutorial will show you a practical way to generate a hash for a string in JavaScript, and provide working code examples you can use in your own project. What is a Hash? A Hash or Checksum is a calculated value with a specific length.… Read More »Generate a Hash from String in Javascript, with Examples
Pop!_OS has made it to the Raspberry Pi. This Linux distribution has become quite popular over the last few years – so how does it perform on the tiny single board computer? Read on to find out. Pop!_OS is a relatively new distribution which aims… Read More »Pop!_OS on the Raspberry Pi [Review]
JavaScript was built for adding interactivity to web pages. It can interact with and modify on-screen elements, including their HTML attributes – thats what setAttribute() does. Here’s how to use it. What is the HTML DOM? The HTML DOM (Document Object Model) is the interface which JavaScript… Read More »JavaScript setAttribute() Method-What It Is/How to Use It [Examples]
Travel is back. Do you have a plan for what happens if your laptop, with your passwords and banking details and secret projects gets stolen? Read on for a nifty way to mitigate the inconvenience of a lost laptop. Taking Your Laptop on Holiday I… Read More »Linux Tip: Travel Securely with an Encrypted Linux USB Stick
JavaScript does not have a native object class called a “hash table” – but that doesn’t mean that the functionality of hash tables doesn’t exist in the language. Here’s how to use hash tables in JavaScript, with working example code. What is a Hash Table?… Read More »Hash Tables/Associative Arrays in JavaScript – How and Why?
Here are some handy tips to keep in mind when writing your shell scripts in Linux. Shell scripts are a versatile way to automate your workflows in Linux (and MacOS, and now Windows, with the Windows Subsystem for Linux). Shell scripting syntax and behaviour does… Read More »LinuxScrew’s Linux Shell/Bash Scripting Tips
