Article
Python provides some very convenient ways to work with file-like objects, including the with feature. But what if we need to open multiple files in this way? Your could wouldn't exactly be "clean" if you had a bunch of nested with open statements. In this article, we'll show...
Scott Robinson
Python is not necessarily known for its speed, but there are certain things that can help you squeeze out a bit more performance from your code. Surprisingly, one of these practices is running code in a function rather than in the global scope. In this article, we'll see why Python...
In this article we'll be showing how to select and manipulate CSS pseudo-elements, specifically ::before and ::after, using JavaScript and jQuery. As a web developer, you've likely at least seen these pseudo-elements in a CSS file, but may not have had the chance to interact with them programmatically. This article...
While learning Python or reading someone else's code, you may have encountered the 'u' and 'r' prefixes and raw string literals. But what do these terms mean? How do they affect our Python code? In this article, we will attemp to demystify these concepts and understand their usage in Python....
Whether you're reading data from files or writing data to files, understanding file operations is important. In Python, and other languages, we often need to copy files from one directory to another, or even within the same directory. This article will guide you through the process of copying files in...
React.js uses a number of unique concepts that can initially seem a bit confusing. One such concept is the use of keys, particularly when working with component arrays. Why and how do we use these keys? This article aims to explain the use of unique keys for array children...
As a web developer, you've likely encountered the need to persist data across different sessions or even tabs in a browser. This is where HTML5's localStorage and sessionStorage come in handy. These two web storage objects allow you to store data right in the user's browser, no server-side code required....
JavaScript, although only single-threaded, is an asynchronous language. In the beginning, it only used callbacks for asynchronous tasks, but ES6 introduced the concept of a promise, which made these tasks much easier to work with. The problem, however, is that many of the early libraries and APIs use callbacks, and...
Even with a "simple" language like Python, it's not immune to performance issues. As your codebase grows, you may start to notice that certain parts of your code are running slower than expected. This is where profiling comes into play. Profiling is an important tool in every developer's...
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