Using generics with functions

We have worked with classes, and something else that is also used often that can reinforce the importance and ease of working with generics are the functions that use them. Let’s look at some example Kotlin code:

fun <T> printItem(item: T) {
    println(item)
}
    fun main(){
        printItem("Viena")
        printItem(50)
        printItem(true)
    }

One of the key features is the simplicity of the examples. The purpose is to make the content as practical as possible, allowing us to focus on understanding the concepts without getting bogged down in complex code.

We will work on the function that we are going to create and the main function in the same file, so let’s go through the first part of the code, the printItem function.

We can see that the printItem function in its definition is already referencing T; this is for the same reason as when it did so in the class section. With this, we indicate that...