In Python, you mainly deal with variables that are either: But when you have a function inside another function, the outer function’s variables are neither local nor global in the eyes of the inner function. These variables are called nonlocal variables in Python. If you need to work with a nonlocal variable in Python, you […]
Python ‘nonlocal’ Keyword: A Complete Guide (Examples) Read More »
Measuring the execution time is common in programming to get a better idea of how a program or a part of the code is performing. This is a comprehensive guide to measuring the elapsed time in R. In this guide, there are some built-in mechanisms and examples of popular libraries’ ways of computing the execution
How to Measure Execution Time in R (5 Methods + Examples) Read More »
Dealing with number sequences in data science is common. Having the tools to easily produce sequences of numbers of different lengths, stepsizes, and start/end values is crucial. This way you can avoid having to write loops to produce number sequences over and over again. In R, you can use the built-in seq() function to create
The seq() Function in R: A Complete Guide (with Examples) Read More »
This guide teaches you how to split strings in JavaScript. How to Split a String in JavaScript? In JavaScript, the string type has a built-in method called split(). You can use this method to split a string by a specific separator, such as a blank space or a dash. This method places the split string
Split String in JavaScript: A Complete Guide (with Examples) Read More »
Date formatting is a common operation in JavaScript to make the dates look different depending on the context. Traditionally, you might think you need to use a library such as Date-fns, to format dates. But for smaller projects, using a library to format dates can be overkill because JavaScript also has some built-in data formatting
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You may have encountered javascript:void(0) in an HTML document as a href attribute like this: A common reason why developers use javascript:void(0) trick is to prevent the page from reloading when clicking a link. This comprehensive guide teaches you: Speaking of examples, I think the best way to learn what javascript:void(0) does is by taking
What Is “javascript:void(0)”—A Complete Guide (Examples) Read More »
In videography, a green screen or chroma key is a technique used to change the background of a video to something more intriguing. This guide teaches you what is a green screen and how it works. Green Screens in Videography In videography, having the right type of background can enhance the viewer’s experience. For example,
What Is a Green Screen (Chroma Key) & How Does It Work? Read More »
In R, there’s a built-in function names() you can use to get or set the values of an R object. For example, you can set the names of list elements or the names of the columns in a data frame. This comprehensive guide teaches you how to use the names() function with a bunch of
The names() Function in R: A Complete Guide (with Examples) Read More »
This is a comprehensive list of the popular terms and definitions programmers and software developers use. You can benefit from reading this article if you: This list is in alphabetical order. Abstraction Abstraction means removing the characteristics of something. The goal of abstraction is to reduce complexity. In programming, abstraction is a commonly used technique.
Programming Glossary: 107+ Coding Terms & Definitions (2023) Read More »
In JavaScript, the dollar sign ($) and underscore (_) are both identifiers—similar to any other name, like myCar or houseAge. You can use a dollar sign or underscore to identify objects, such as: Thus, the dollar sign and underscore are not treated like other special symbols (such as the dot) in JavaScript. The dollar sign
JavaScript Dollar Sign ($) and Underscore (_) Explained Read More »
