Kotlin Standard Library Cookbook

How to do it...

1. Implement the Printer class:

class Printer(val textFormattingStrategy: (String) -> String) {    fun printText(text: String) {        val processedText = textFormattingStrategy(text)        println(processedText)    }}

2. Add sample strategies:

val lowerCaseFormattingStrategy: (String) -> String = {    it.toLowerCase()}val upperCaseFormattingStrategy: (String) -> String = {    it.toUpperCase()}