Description: Kotlin extension functions allow developers to add new functions to existing classes without modifying their source code. This concept is fundamental in object-oriented programming as it promotes code reuse and separation of concerns. Extension functions are defined outside the class they apply to, meaning there is no need to have access to the original class source code. This allows developers to extend the functionality of libraries and frameworks without needing to inherit from or create subclasses. Additionally, extension functions are resolved at compile time, meaning they do not affect the behavior of instances of the original class. This feature makes the code cleaner and more readable, as specific functionalities can be added without altering the existing structure. In summary, extension functions are a powerful tool in Kotlin that allow developers to enhance and customize the behavior of classes efficiently and effectively.
