Decorator pattern simple exmple

SimpleDecorator.kt

fun main() {
    val capitalizeDec = decorateCapitalize(::capitalize)
    val text = capitalizeDec("HeLLo")
    print(text)
}

fun capitalize(hello: String): String {
    return hello.capitalize()
}

fun decorateCapitalize(body: (String) -> String): (String) -> String {
    return fun(string: String): String {
        return body(string.toLowerCase())
    }
}