Javascript is becoming more popular for building web applications and mobile apps using React Native framework. Therefore, understanding its key concepts can come in quite handy. The “this” keyword in Javascript is a source of confusion and misery for most beginner Javascript developers and even pro-developers. This post aims to give you a beginner-friendly comprehensive … Read more
It is common to learn how to detect user input (stdin) when learning a new programming language, and Rust is not the exception. In this article, you will learn how to read the user input from a terminal. Here are the steps to read user input (stdin) in Rust: Import the std::io crate Generate a … Read more
Building a CRUD API lets one know how the communication between the frontend and the backend of the applications works. Using Node.js and GraphQL, you can build a CRUD API that you can connect to virtually any database. Here are the steps to build a CRUD API with Node.js and GraphQL: Set up a new … Read more
The Array Object in Javascript supports several methods that you can use to manipulate the array elements. These include the array.map(), array.sort(), array.filter(), array.reduce() etc. The latter – array.reduce() method – is regarded as one of the most tricky array methods and can be quite hard to understand at first glance. However, it’s a powerful … Read more
In Javascript, most users are well familiar with the single exclamation mark (“!”) symbol (the logical “not” operator) used to reverse a boolean value. For example, !true will return false and !false will return true. Now, you must have come across the double exclamation mark !! symbols in your coding journey. Some developers call them … Read more
Checking whether an object is empty is a common and repetitive task for JavaScript and TypeScript developers. It is crucial in cases where the object holds the data from the database, user input, or API. One should always verify the existence of data before proceeding to further operations. Note: The article describes the methods which … Read more
Chances are you recently came across the definition of the ToOwned trait to realize it is a generalization of the Clone trait? If so, what is the difference between the two traits? more specifically, what is the difference between .clone() and .to_owned() if they work the same? A generalization of Clone to borrowed data. https://doc.rust-lang.org/std/borrow/trait.ToOwned.html#tymethod.to_owned … Read more
Frameworks such as Express.js assist users in creating Restful APIs. This article will be a tutorial on creating a Node.js REST API that uploads a file to a static folder on the server using Express and Multer. Also, you will work on getting a list of all the files’ details, such as file name and … Read more
Arrays always come in handy when writing any piece of Javascript code. You can use them to hold a list of items either as objects, strings, numbers, or a mix of both strings and numbers. Similar to other programming languages, the Array object in Javascript supports a variety of methods. They include: pop(), push(), toString(), … Read more
Have you ever wondered how the front end and the back end work together to form a complete full-stack application? You probably have heard the term API(Application Programming Interface). It is a mechanism with a functional role that facilitates the communication between the front end and the back end in a web application. API is the interface … Read more