Advanced Problem Solving with TypeScript & OOP

Hello there! 👋 Welcome to my repository for Assignment 1: Advanced Problem Solving with TypeScript & OOP.

In this project, I've tackled 7 different coding problems to demonstrate my understanding of strict type safety, Object-Oriented Programming (OOP) concepts, and advanced TypeScript features like Generics and Type Guards. I've also written two technical blog posts to explain some core TypeScript concepts in a simple, easy-to-understand way.

📂 What's Inside? (File Structure)

Here is how I have organized the files for this assignment:

├── solutions.ts
├── blog-1.md
├── blog-2.md
└── README.md

💻 Code Solutions (solutions.ts)

I have implemented all the problem-solving tasks inside a single file (solutions.ts). I made sure to follow strict TypeScript rules, use proper naming conventions, and keep the code clean (no console.log statements left behind!).

Here is a quick overview of what I solved:

1. Array Filtering: A function that strictly extracts even numbers from an array.
2. String Reversal: A clean approach to reversing a given string.
3. Union Types & Type Guards: A checkType function that safely identifies if a value is a "String" or "Number".
4. Generics & Constraints: A strongly-typed getProperty function that uses <T, K extends keyof T> to prevent invalid object keys.
5. Intersection Types: A toggleReadStatus function that immutably updates a Book object.
6. OOP & Inheritance: A base Person class and a Student subclass demonstrating inheritance and proper parameter properties.
7. Array Intersection: A logical function to extract common elements between two arrays.

📝 Technical Blogs

Besides coding, I also wrote two blogs to share what I've learned:

1. Blog 1: Understanding Why any is a "Type Safety Hole" and unknown is your Best Friend

   • I discussed why using any is dangerous for a codebase and how unknown, combined with Type Narrowing, acts as a much safer alternative.

2. Blog 2: Generics in TypeScript: Reusable Code That Stays Strictly Typed

   • I explained how Generics can save us from writing repetitive code while maintaining 100% type safety, with real-world examples.

🚀 How to Run the Code

You can easily run the solutions.ts file directly using Node.js. Whether you are on Windows using PowerShell or on Linux/Mac using Bash, the command is the exact same.

Open your terminal (PowerShell, Bash, or Command Prompt) and run:

node solutions.ts

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Thanks for checking out my work! Developed with strict adherence to TypeScript and OOP best practices.