what are bytes used for in python code example

Example 1: what is unit type used for in kotlin

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

// Example
val MyName = "Johnny"

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

fun main() {
	SayHey()
}

Example 2: what is c# used for

C# was developed by Microsoft and is used in essentially all of their products. It is mainly used for developing desktop applications and, more recently, Windows 8/10 applications. It is also a part of . NET so it is used alongside languages like ASP in web development and apps.