Functional programming is a programming paradigm that emphasizes the evaluation of functions rather than the execution of commands. It is a declarative programming style, meaning that programmers specify what values a function should return without specifying how the function should achieve those values....

React Native is a JavaScript framework for building native mobile apps. It’s based on React, Facebook’s JavaScript library for building user interfaces, but instead of targeting the browser, it targets mobile platforms....

Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js' package ecosystem, npm, is the largest ecosystem of open source libraries in the world....

If you’re like most people, you probably have JavaScript turned on in your web browser. But if you’ve somehow managed to turn it off, or if you’re using a browser that doesn’t support JavaScript, you can turn it back on again....

Morse code is a system of communication using short and long pulses - usually represented by dots and dashes - to spell out words. It was developed in the early 1800s by Samuel Morse and Alfred Vail, and it was used extensively in the military and for maritime communications....

SQL has an IF/ELSE statement that allows you to do something if a condition is true, and something else if it’s not. Here’s how it works: IF condition THEN statement1 ELSE statement2 END IF; For example, let’s say we have a table of employees, and we want to give a 10% raise to those who have been with the company for more than 5 years, and a 5% raise to everyone else....

SQL round is a mathematical function that rounds a number to the specified precision. The syntax for the SQL round function is: ROUND(number, decimal_places) Where the number argument is the value to be rounded and the decimal_places argument is the number of decimal places to round the number to....

Object-oriented programming (OOP) is a programming paradigm that uses “objects” – data structures consisting of data fields and methods together with their interactions – to design applications and computer programs....

Most Docker images are stored in a central repository called the Docker Hub. However, you can also store images locally on your own computer. When you run the docker pull command, the image is downloaded from the Hub and stored on your computer....

Most web designers and software devs know about using black, white, and gray in their color schemes. But what about using HTML colors? HTML colors are actually quite easy to use, and they can add a lot of flair to your web pages....