How to Create Your Own Python Split Function
The challenge
Write your own implementation of the built-in split function in Python.
The following rules must be adhered to:
- the function cannot …
Technical Articles
In-depth guides, insights, and best practices for modern software engineering
How to create a Domain Name Validator in Python
The challenge
Create a domain name validator mostly compliant with RFC 1035, RFC 1123, and RFC 2181
The following rules apply:
- Domain name may …
How to start Java Jar as Service on Linux
If you have a Java Jar file, you can run it as a service under Linux/Ubuntu.
sudo ln -s /var/www/japi-0.0.1-SNAPSHOT.jar /etc/init.d/japi
Now you can …
Read Article →How to write a validDate Regex in Python
The challenge
Your task is to write a regular expression (regex) that will match a string only if it contains at least one valid date, in the format …
Read Article →How to Validate Passwords with Regex in Python
The challenge
You need to write regex that will validate a password to make sure it meets the following criteria:
- At least six characters long …
How to create a Coordinates Validator in Golang
The challenge
You need to create a function that will validate if given parameters are valid geographical coordinates.
Valid coordinates look like the …
Read Article →How to Validate ISBN-10 numbers in Golang
The challenge
ISBN-10 identifiers are ten digits long. The first nine characters are digits 0-9. The last digit can be 0-9 or X, to indicate a value …
How to Create a Java GUI App that shows the Logged-in User and Hostname
Create a new file called Application.java and paste the following:
import javax.swing.*;
import java.net.InetAddress;
import …How to view a Terraform Module’s Output
An output in Terraform is a way to view the result of an action that has been performed, or resource that has been created.
Let’s say that you …
Read Article →How to Count the Characters in Python
The challenge
The goal of this challenge is to write a function that takes two inputs: a string and a character. The function will count the number of …
Read Article →How to Install Cuda driver for Nvidia on Ubuntu
If you have just upgraded Ubuntu on your AWS g4dn instance and need to install/reinstall Cuda drivers for your Nvidia chipset, then you can run the …
Read Article →How to List all Running Services on Ubuntu
If you need to view a list of all the services that are either running or stopped (or both) on an Ubuntu server, then you can use the following …
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