Bijay Kumar 
I have spent over a decade wrangling messy data in Python. One thing I’ve learned is that the standard split() method is great, but it often falls short. When you are dealing with real-world strings that have multiple different delimiters, you need something more powerful. That is where the Python split regex (Regular Expressions) comes … Read more >>
As a developer, I once faced a challenge while working on a project for a US logistics company. We needed to create a reusable function to handle different types of data, from customer details to shipment information. Using generic arrow functions in TypeScript, we can achieve this. In this tutorial, I will explain how to … Read more >>
I encountered an issue during a project, where user input fields were often left blank. These null or undefined values caused unexpected behavior in the application. To handle this, I used the double question mark operator to provide default values seamlessly. In this tutorial, I will explain the double question mark (??) operator in TypeScript, … Read more >>
In this tutorial, I will explain the use of the exclamation mark in TypeScript, also known as the non-null assertion operator. Recently, while working on a project for a client, I encountered a situation where I needed to assure the TypeScript compiler that certain variables were not null or undefined. This tutorial will help you … Read more >>
In this tutorial, I will explain the difference between == and === in TypeScript. Recently, while working on a project for a client, I encountered a bug that was caused by incorrect usage of these two operators. This tutorial will help you avoid similar issues and write more robust TypeScript code. What Are == and === in TypeScript? … Read more >>
I remember the first time I had to build a large-scale inventory system for a retail client. I spent hours writing repetitive __init__ methods and manual equality checks for hundreds of product types. It was tedious and felt like I was fighting the language rather than using it to my advantage. Then I discovered Python … Read more >>
I have been writing Python for over a decade, and I remember the days when creating a simple data container felt like a chore. You had to write the constructor, the string representation, and the equality logic every single time. It was tedious and prone to errors. When Python 3.7 introduced the @dataclass decorator, it … Read more >>
I remember when I first started coding in Python over a decade ago. Everything was a mess of global variables and long, confusing functions. Then I discovered Object-Oriented Programming (OOP), and it changed how I built tools. It was like moving from a messy desk to a perfectly organized filing cabinet. In this tutorial, I … Read more >>
I have spent many years building scalable applications in Python, and one thing I’ve learned is that how you structure your classes matters more than the code inside them. When I first started, I often struggled with “Has-A” relationships. I would frequently mix up when to use Aggregation and when to use Composition. Through years … Read more >>
I remember when I first started architecting large-scale Python applications for a startup. I often found myself struggling to decide whether a class should inherit from another or simply contain it. It is a classic debate that every seasoned developer faces: Composition vs. Inheritance. In this tutorial, I will share my firsthand experience to help … Read more >>
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