lameroid

fun lsxUsage() {
    val list = listOf(2, 3, 5, 7, 11, 13, 17, 19, 23, 29)

    println(list[1..3])          // [3, 5, 7]
    println(list[1 til 3])       // [3, 5]
    println(list[4..1])          // [11, 7, 5, 3]
    println(list[4 til 1])       // [11, 7, 5]
    println(list[2..-1])         // [5, 7, 11, 13, 17, 19, 23, 29]
    println(list[2 til -1])      // [5, 7, 11, 13, 17, 19, 23]
    println(list[3..0 by 1])     // [7, 5, 3, 2]

lameroid

val list = listOf(2, 3, 5, 7, 11, 13, 17, 19, 23, 29)

list[!5]      // [13, 17, 19, 23, 29]
list[!1/3]    // [3, 5, 7]
list[!4/1]    // [11, 7, 5, 3]
list[!2/-1]   // [5, 7, 11, 13, 17, 19, 23, 29]
list[!3/0/1]  // [7, 5, 3, 2]
list[!-1/1/2] // [29, 19, 13, 7, 3]

lameroid

val list = listOf(2, 3, 5, 7, 11, 13, 17, 19, 23, 29)

list[1, 3]    // [3, 5, 7]
list[4, 1]    // [11, 7, 5, 3]
list[2, -1]   // [5, 7, 11, 13, 17, 19, 23, 29]
list[3, 0, 1]  // [7, 5, 3, 2]
list[-1, 1, 2] // [29, 19, 13, 7, 3]

lameroid

operator fun <T, A, B, C> T.getSlice(first: A, last: B, step: C)
operator fun <T, A, B, C, S> T.setSlice(first: A, last: B, step: C, value: S)
and we can use them:
operator fun <T> List<T>.getSlice(first: Int = 0, last: Int = size - 1, step: Int = 1)
list[first:]
list[first:last]
list[first:last:step]
list[:last]
list[:last:step]
list[first: :step]

lameroid

fun main(args: Array<String>) {
    example(1 to Example()) {
        x()
    }

    example(1 to "string") {
        substring(2)
    }
}