ForSample.kt

for (p in list) println(p)
list.forEach { println(it) }

// Taken from Kotlin standard library
public inline fun <T> Iterable<T>.forEach(action: (T) -> Unit): Unit {
    for (element in this) action(element)
}

for (i in 0..list.size - 1) println("list[$i]: ${list[i]}")
for (i in list.indices) println("list[$i]: ${list[i]}")
list.forEachIndexed { i, present -> println("list[$i]: $present") }

// Taken from Kotlin standard library
public inline fun <T> Iterable<T>.forEachIndexed(action: (Int, T) -> Unit): Unit {
    var index = 0
    for (item in this) action(index++, item)
}