Defining Extension Functions

# Defining Extension Functions in Kotlin: Supercharge Your Classes Ever wished you could add a new method to a class without modifying its original source code? Kotlin's **extension functions** make this a reality! They're a game-changer for code reusability, readability, and maintainability. Imagine adding custom utilities to `String`, `Int`, or even Android's `TextView` with ease. This guide will equip you with the knowledge and practical skills to master Kotlin extension functions, allowi