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Java Random Number Generator – How to Generate Numbers with Math.random() and Convert to Integers

In many applications, you need random numbers. You might need to throw dice in video games, create a private cryptography key, or create a user’s temporary password. All these applications depend on random number creation. It’s sometimes challenging to differentiate what to use when, and security is a deep

URL: https://bit.ly/3yUu5HS
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What is Checksum? How to Check if a File was Modified Using the cksum Command in Linux

When you are working with files on the command line, you might need to check their modification time and content integrity. Linux has a powerful command line which allows you to explore multiple aspects of files and filesystems. In case you need to check if file was modified, you

URL: https://bit.ly/3OjCdr0
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How to Batch Delete Emails in Gmail – Delete Multiple Email Messages

I hear some of my co-workers talk about getting to inbox zero. So I started thinking of a way to clear out my over over 4000 unread messages. And after days of searching around, I found a way. I even went on to delete 20,000 email messages from the trash

URL: https://bit.ly/3aWCyCd
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While Loops in Python – While True Loop Statement Example

Python has many tools and features that can help you automate repetitive tasks. One of those features is loops. Loops are a helpful and frequently used feature in all modern programming languages. Loops are helpful when you want to automate a specific repetitive task or prevent yourself from copying and

URL: https://bit.ly/3PmKWd8
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How to Convert a String to a DateTime Object in Python

When you get dates from raw data, they're typically in the form of string objects. But in this form, you can't access the date's properties like the year, month, and so on. The solution to this problem is to parse (or convert) the string object into a datetime object

URL: https://bit.ly/3aSQm0I
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Loop Through an Object in JavaScript – How to Iterate Over an Object in JS

In JavaScript, when you hear the term "loop", you probably think of using the various loop methods like for loops [/news/javascript-for-loops/], forEach() [/news/javascript-foreach-js-array-for-each-example/], map() and others. But in the case of objects, unfortunately, these methods don't work because objects are not iterable. This doesn't mean we can't loop through an

URL: https://bit.ly/3uZWsmU
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Learn Truffle and Ganache – How to Create and Deploy a Smart Contract

Learning a new technology often means learning a new framework, programming language, IDE, or deployment method. And the blockchain is no different. In this tutorial, I am going to show you how to get started with Truffle [https://bit.ly/3ITRWMb], a Node.js blockchain framework, in Visual Studio Code. How to Install Truffle

URL: https://bit.ly/3Ogs7ao
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How to Call a Function in Python – Def Syntax Example

In Python and other programming languages, you can use functions to avoid repeting yourself and to reuse pieces of code. To make functions work, you don’t just write them and say goodbye – you have to call them too. Before you call a function, you need to write it with

URL: https://bit.ly/3Omyadw
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How to Add a "Skip to Main Content" Link to Your Website

Websites and web applications have increasingly become more complex. But it's still our responsibility, as web developers, to strive for the highest level of accessibility we possibly can. This isn't always easy, as the range of user accessibility needs can complicate things even further. Thankfully, various guidelines exist

URL: https://bit.ly/3ofOSk7
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Basic Git Commands – How to Use Git in a Real Project

In my previous tutorial [/news/git-and-github-the-basics/] we talked about what version control is, how Git and GitHub work, and how to setup an account with GitHub. Today we will be looking at how to use some basic Git commands in a real project. I created a simple project that we'll be

URL: https://bit.ly/3OjtODT
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Objects in JavaScript – A Beginner's Guide

Declaring multiple variables to hold different values can make your program untidy and cumbersome. For instance, if you need to store three characteristics each for 10 individuals, having 30 variables individually declared can make your program appear less organized. So you need a way to group values with

URL: https://bit.ly/3RIfckx