[Kotlin] Shorthand syntax for FP

First version:

fun main(args: Array<String>) {
    val providers = Providers()
    val details = providers.getAllProviders()
    details.forEach {
        detail -> println("${detail.providerName}, ${detail.name}")
    }
}

Second version: Replace 'detail' with 'it':

fun main(args: Array<String>) {
    val providers = Providers()
    val details = providers.getAllProviders()
    details.forEach {
       println("${it.providerName}, ${it.name}")
    }
}

'Detail' is a Data Class, we can just print it:

Third version: 

fun main(args: Array<String>) {
    val providers = Providers()
    val details = providers.getAllProviders()
    details.forEach(::println)
}