Kotlin .each extension method on Collection<T>

each.kt

package litfunc

import java.util.ArrayList
import java.util.Collection

fun main(args : Array<String>) : Unit {
    val l = ArrayList<String>()
    l.add("one")
    l.add("two")
    l.add("buckle my shoe")
    l.each { it ->
        println(it)
    }
    /*
    Output is:
    one
    two
    buckle my shoe
    */
}

fun <T> Collection<T>.each(fn : (T) -> Unit) {
    for( item in this) {
        fn(item)
    }
}