This is the seventh chapter of “Head First Design Patterns” book. The problem Accidentally a Turkey’s egg falls among that of Ducks’ and the child tries hard to “adapt” with its duck siblings. How should it adapt? Simplifying the huge list of behavourial changes the Turkey needs to undergo to two. Mallard…

This is the third chapter of the “Head First Design Patterns” book. I have covered the Strategy and Observer patterns before. The problem We are told to design an ordering application at a coffee shop. It sells a variety of beverages like House Blend Dark Roast Decaf Espresso Apart from these, the…

This is the second chapter of Head First Design Patterns book. Though the book has code snippets in Java, my attempt here is to implement the problem discussed in Go. Without further ado, let’s understand the use-case. The problem statement We are told to design a weather monitoring application. …

Usually I find technical books very dry, but Head First Design Patterns was awash with funny anecdotes and eye-grabbing illustrations. It felt a good place to start learning design patterns though it may miss out on more intricate details. The code examples are in Java. …

Back when I learnt merge sort, I always saw this diagram of dividing the array till the end and merging them in a sorted manner. A passing thought came to my mind, what if we could run the two halves in parallel like the diagram showed. Found out later like…

This will be a basic tutorial to familiarize the concept of state hook. The idea The mini-application will display videos of four rock bands and ask you to like or dislike the bands accordingly. A list of all your liked bands will be displayed below. The environment I always like to make a small…

In JS, an object is an unordered collection of associated key/value pairs (properties). Each property can reference a primitive type (string, number, boolean, null, undefined) or another object (array, functions, etc). There are two types of two forms of objects, Literal (Declarative form) const developer = { name: 'Srinjoy Santra'…

In the month of December last year, an email from Udacity India appeared in my inbox. Given the brand name of Google and Udacity in the technology and education fields respectively, it was a big opportunity ahead. …

On 28th October 2017, few of my classmates and me formed a team to participate at our first-ever hackathon. Named #OpenGovDataHack, it was one of the most prestigious hackathons of India. …