Why is possible to write a function outside a class in Kotlin?

Question

I don\'t understand why is possible to write a function outside a class in Kotlin ? Is that a good practice ?

For example, it\'s possible in Kotlin to write a funct

Answer 1

Yes, this is good practice. Kotlin is not a purely object-oriented language, so it's not obligated to follow how "an object-oriented language works normally" (even though other object-oriented languages, such as C++, Ruby and Python, also allow top-level functions).

It's better to use a top-level function when the logic of this function does not clearly belong to any class.