Câu hỏi phỏng vấn Kotlin
Câu hỏi

What is the purpose of Unit-returning in functions? Why is VALUE there? What is this V ALUE ?

Câu trả lời

Unit-returning Functions in Kotlin

In Kotlin, a function that returns Unit is a function that doesn't return any meaningful value. It's similar to a void function in Java or C++. The purpose of using Unit-returning functions is to indicate that the function's primary purpose is to perform an action or side effect, rather than to compute and return a value.

Why is Unit there?

The Unit type in Kotlin is a singleton object that represents the absence of a meaningful return value. It's used as the return type for functions that don't need to return any specific value. When a function doesn't explicitly specify a return type, Kotlin assumes it returns Unit by d...

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