Check out example codes for "what is unit type used for in kotlin". It will help you in understanding the concepts better.

Code Example 1

/* 
	Unit is used when the function basically return
    nothing of interest
*/

// Example
val MyName = "Johnny"

fun SayHey(): Unit {
	println("Hi, " + MyName)
}

fun main() {
	SayHey()
}

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