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Learn how to efficiently calculate the number of properties in a JavaScript object. To accomplish this, you can use the Object.keys() method. By passing the object you want to inspect as the argument, you can obtain an array that contains all the enumerable (own) properties of the object. To count the number of properties, simply access the length property of the array generated by Object.keys(): const car = { color: 'Blue', brand: 'Ford', model: 'Fiesta' } Object....

Learn how to effectively add comments to an HTML page. Comments in HTML are elements that are not interpreted by the browser. To add a comment in HTML, simply enclose the text between the <!-- and the --> tags, like this: <!-- This is a comment --> Comments can also span multiple lines by starting with <!-- and ending with -->, as shown in the example below: <!-- This is a multi-line comment --> Comments in HTML serve various purposes....

When working with Python, you may need to create a directory for various purposes. In this article, we will explore how to create a directory using the os.mkdir() method provided by the os standard library module. To get started, import the os module: import os Next, specify the desired directory path: dirname = '/Users/flavio/test' Now, let’s use the os.mkdir() method to create the directory: os.mkdir(dirname) However, it’s important to note that creating a folder can sometimes raise an OSError exception....

In this tutorial, we will learn how to create a function in a Bash shell script. Functions can help automate repetitive tasks and improve the efficiency of your workflow. Introduction As a developer, I often find myself performing the same actions repeatedly. Instead of manually executing these actions each time, I decided to write a shell script to automate the process. One particular task required me to navigate through different folders and execute three commands using npx....

In this tutorial, we will walk through the process of creating a GraphQL server using Node.js and Express. By the end of this guide, you will have a basic understanding of how to set up a GraphQL server that can handle queries and mutations. Start by creating a new Node.js project if you haven’t done so already: npm init --y This command will create a package.json file, which is necessary for working with npm packages....

In Python, it is possible to create a list from a string. This can be achieved by using the split() method provided by Python strings. Here’s how you can do it: First, you need to determine how to split the string into separate elements in the list. For example, if you want to split the string at every space, you can use the ' ' space character as the word separator....

Learn how to efficiently create multiline strings in JavaScript using template literals. JavaScript lacked a proper way to handle multiline strings until the introduction of ES6 in 2015, along with the concept of template literals. Template literals are strings enclosed in backticks (`), rather than the commonly used single or double quotes. They have a distinctive feature: they support multiline strings. Here’s an example: const multilineString = `A string on multiple lines`; const anotherMultilineString = `Hey this is cool a multiline st r i n g !...

In this tutorial, we will be using Phaser.js to create a platform game. The objective of the game is for the player to move around, collect stars, and reach the end. Let’s get started! Setup the Project To begin, make sure you have an empty folder and run the following commands: npm init -y This will initialize a minimal package.json file for your project. Then, install Phaser by running: npm install phaser If you haven’t already, install Parcel (a bundler) by running:...

When you already have PostgreSQL installed, you can easily create a new database by following these steps: Open the console by typing psql postgres. Run the CREATE DATABASE command, making sure to include a unique name for your database. For example: CREATE DATABASE databasename; Remember to include a semicolon (;) at the end of the command. To confirm that your database has been successfully created, execute the \l command in the console....

In order to launch a new version of your website without disrupting the current live version, you can create a staging version. This tutorial will guide you through the process of deploying a staging version of your website based on a GitHub Pull Request using Netlify. Introduction When launching a new course or making significant changes to your website, it’s crucial to have a separate staging environment where you can make and test these changes without affecting the public-facing version of your site....