Learning Linux: A Guide for Beginners
Linux is an operating system that has been around since the 1990s. It powers most modern technologies that we use today such as Android devices, televisions, cameras, and even smart appliances. This guide will show you how to learn Linux…
How to Learn C#
Have you ever wanted to develop a game? Or create a website? Or develop applications for a Windows computer? If so, learning C# is a great investment of your time. C# is an essential part of many of the technologies…
How to Use the Python Time Module
The Python time module represents time-based objects in Python. Developers use time() function returns the current time as a UNIX timestamp. The ctime() function translates a UNIX timestamp into a standard year, month, day, and time format. Working with time…
HTML Iframe: Step-by-Step Guide
The HTML iframe tag embeds a web document onto a web page. An embedded document could be a PDF, a web page, or another asset. The src attribute defines the location of the embedded resource. You can embed the contents…
.gitignore Files: A Guide for Beginners
.gitignore files contain a list of files Git should ignore in a local project. A .gitignore file commonly appears in the main directory of a project. You can ignore single files, multiple files, or folders. You may have files that…
A Step-By-Step Guide to charAt in Java
The Java charAt() method returns a character at a specific index position in a string. The first character in a string has the index position 0. charAt() returns a single character. It does not return a range of characters. When…
How to Use Java Math.random
The Math.random()Java method generates a pseudorandom number between 0.0 and 1.0. The resulting random number can be multiplied to get a range outside 0-1, and the result can be 0 but is always less than 1. When you’re programming, there are…
JavaScript Split: A Step-By-Step Guide
The JavaScript split() method divides a string into an array of substrings. These substrings are added to a new array. split() returns the new array of substrings. When you’re programming, it’s common to see cases where you need to get…
JavaScript Splice: How to Use It
The JavaScript splice() method modifies an array. It is used to add new elements to an array or remove or change existing ones. splice() changes the array on which it is used. It does not create a new array. It’s…
A Step-By-Step Guide to Git Add
The git add command adds a file or folder to the staging area. Files in the staging area are those that you want to add to your next commit. Git add does not modify or otherwise affect your repository or…
Python Read File: A Step-By-Step Guide
The open() function opens a file. You must use the "r" mode to read a file. The read(), readline(), readlines() functions return the contents of a file you have opened. Python is a useful programming language to use if you…
JavaScript setTimeout and setInterval: A Guide
setTimeout() and setInterval() are JavaScript timing events. The JavaScript setTimeout() method executes a function after a period of milliseconds. JavaScript setInterval() executes a function continuously after a certain period of milliseconds have passed. JavaScript runs line-by-line. As soon as one…
JavaScript innerHTML and innerText: A Guide
You’ll need to know how to change the text or the HTML that appears on the page to make your sites more interactive. That’s where the innerText and innerHTML HTML attributes come in. These attributes make it easy to change…
Best Online Engineering Degrees 2020
Engineering is a profession in high demand. Today, people find lucrative incomes and long-lasting careers in engineering. The first step towards becoming an engineer is with a degree. Through an online engineering degree, you can find success in this growing…
Java Substring: A How-To Guide
The Java substring() method returns a portion of a particular string. This method accepts the start and end index values of the characters you would like to retrieve from a string. The original string on which substring() is applied is…
How to Use Substring in JavaScript
The JavaScript substring() method retrieves a range of characters between two index positions. You can use substring() to retrieve characters to the end of a string by omitting an end index position. A substring is a smaller portion of a…
How to Use Enum in Java
A Java enum is a data type that stores a list of constants. You can create an enum object using the enum keyword. Enum constants appear as a comma-separated list within a pair of curly brackets. An enum, which is…
Python Write to File: A Guide
he open() function writes contents to an existing file. You must use the "w", "a", "r+", "a+', or "x" file modes to write text to a file. The most common file modes are "w" and "a". These modes write data…
if else Python Statements: A Step-By-Step Guide
An if else Python statement evaluates whether an expression is true or false. If a condition is true, the "if" statement executes. Otherwise, the "else" statement executes. Python if else statements help coders control the flow of their programs. When…
JavaScript Filter: A Step-By-Step Guide
The JavaScript() filter method creates an array of elements from an existing array. The filter() method accepts a callback function as an argument. This function evaluates whether an element should be added to the new list from the existing one.…
What is Ethernet?
Ethernet connections send data between devices on a Wide Area Network (WAN) or a Local Area Network (LAN). These connections are made using a physical wire and the Ethernet protocol. The protocol defines how information is shared over Ethernet. Wi-Fi…
Python Input: A Step-By-Step Guide
The Python input() and raw_input() functions are used to collect user input. input() has replaced raw_input() in Python 3 and onward. Both functions return a user input as a string. Processing user input is a crucial part of programming. For…
Python Zip: A Step-By-Step Guide
The Python zip() function accepts iterable items and merges them into a single tuple. The resultant value is a zip object that stores pairs of iterables. You can pass lists, tuples, sets, or dictionaries through the zip() function. Python has…
Python Break and Continue: Step-By-Step Guide
The Python break statement stops the loop in which the statement is placed. A Python continue statement skips a single iteration in a loop. Both break and continue statements can be used in a for or a while loop. You…
Git Delete Branch
Deleting Git branches is common practice after you have merged a branch into your codebase. You can delete a Git branch on your local machine using the git branch -d flag. The git push origin --delete command removes a branch…
Python Append to List: A Step-By-Step Guide
The append() Python method adds an item to the end of an existing list. The append() method does not create a new list. Instead, original list is changed. append() also lets you add the contents of one list to another…
Git Push
The git push command uploads your local version of a repository to a remote repository. Pushing is the mechanism through which you upload changes to a remote repository. Once you have pushed your changes, all the collaborators on a project…
Java Stack Class
A Java stack is a last-in, first-out data structure. The first item removed from a stack is the item last added to the stack. A stack data structure adds new items to the end of the stack. Java stacks extend…
Python Sort(): A How-To Guide
The Python sort() method sorts a list in ascending order by its values. You can sort a list in descending order by using the reverse parameter. sort() optionally accepts a function that lets you specify a custom sort. All coders…
How to Use Python split()
The Python split() method divides a string into a list. Values in the resultant list are separated based on a separator character. The separator is a whitespace by default. Common separators include white space and commas. Dividng the contents of…
