Kotlin extension functions

In Kotlin, we often create utility functions to perform common operations. For instance, consider a function that checks whether a number is divisible by 5. Traditionally, you might define this in a utility class and pass the integer as a parameter.

Below is an example code.

However, Kotlin allows us to extend existing classes with new functionality through extension functions. This enables a more natural and intuitive way to call the function directly on the value itself, improving readability and maintaining cleaner code.

Below is an example code

This enhances the readability of the code and there is no need to pass an argument to a function and get the result.