This occasionally comes up during coding interviews and is actually quite a decent way to test someone’s aptitude of moving back and forth on a… Read More »How to find the longest Palindrome in a String using Python
There is a lot of power in Javascript syntax. One of those powerful things is that of Javascript Anonymous Functions. But what is an Anonymous… Read More »How to write Anonymous Functions in Javascript
I often need to test a specific Linux binary or make sure something works as expected from yum install or apt install. To do this,… Read More »How to use Docker to test any Linux distribution locally
Let’s say that you have a binary tree and we needed to know it’s maximum depth. Binary tree input data [3,9,20,null,null,15,7] could be visualised as follows:… Read More »How to get the Maximum Depth of a Binary Tree in Python
Fizz buzz is a common programming interview question. The problem statement usually reads something like this: Write a short program that prints each number from… Read More »What is Fizz Buzz?
We will create a simple Hello World static HTTP Service using Helm, package it and release it to an AWS EKS Cluster. This tutorial expects… Read More »How to Deploy a Helm “Hello World” app onto Kubernetes
While there are libraries available for all programming languages that offer abilities to sort list, arrays and collections, it is important to know how this… Read More »How to write a Quicksort Algorithm in Python
Python comes with the power of slicing. Let’s try it with a String: Now let’s try the same with a List: As we can see… Read More »How to Reverse a String or List using Python
Python exposes a socket library that allows us to perform networking tasks such as getting the IP Address as well as getting the Hostname of… Read More »How to get the IP address in Python
Reversing a Binary Tree is a common programming interview question. By learning how to Reverse a Binary Tree in Python, you are working towards fundamental… Read More »How to Reverse a Binary Tree in Python
You do not have permission to access the specified resource. If you are seeing this error appears up when trying to delete or detach a… Read More »Unable to Detach AWS Network Interface
First check if the file exists before deleting it: Sometimes you may want to delete an entire folder as well:
JSON stands for Javascript Object Notation and has become wildly popular to transport and store data between application, databases and more. However, it is not… Read More »How to safely parse JSON in Javascript
While processing forms in web development, it’s a common requirement to be able to tell if a checkbox has been checked or not. It’s not… Read More »Check if an HTML Checkbox is checked using Javascript
Docker images are usually stored on Docker Hub, but AWS’s Elastic Container Registry can also be used. It’s a great solution and this post teaches… Read More »How to Push Docker Images to AWS ECR
There is a fantastic tool to see and monitor Bandwidth and Network Traffic on Linux. It’s called bmon and it works out of the box.… Read More »How to monitor Network Traffic on Linux
A Javascript Object – now just called JSON – is a collection of values and properties stored as a map. How would you merge two… Read More »How to Merge Javascript Objects
If you have multiple versions of Python installed on a system, such as both Python 2.7 and Python 3.6+. Then pip will often refer to… Read More »When to use Pip3 instead of Pip in Python
Screen on Linux is a popular command-line program that lets you multiplex between interactive shells. What that means is, you can use screen to save… Read More »How to use Screen on Linux
Namecheap is a pretty good registrar. As its name says, yes, it is usually pretty cheap. I would also like to point out that I… Read More »Transfer a domain from Namecheap
Learn how to package a Python app in this tutorial. For the most part, once you’ve written your Python code, you simply deploy it to… Read More »How to Package a Python App using Nuitka
What is NPM? NPM stands for Node Package Manager, and is the default way to extend your Node applications. There are an absolute ton of… Read More »Introduction to NPM
A symbolic link – or often just sym-link – is a pointer or shortcut to where the actual file lives on a filesystem. What does… Read More »How to create a Symbolic Link on Linux / Mac
If you have ever been in the annoying situation where you had to run git clone from a server that you did not have interactive… Read More »Non-interactive git clone (ssh fingerprint prompt)
Python is a very powerful language, there are so many libraries available for it. However, many developers will complain about its speed by comparison to… Read More »When your Python code is much faster with PyPy