Kotlin – Drop/Delete First N Elements of List

Kotlin List.drop() Function

The Kotlin List.drop() function is used to delete first n elements from this List. n is passed as argument to drop() method. drop() method does not modify the original list, but creates a new list and returns it.

Syntax of List.drop()

The syntax of List.drop() function is

fun <T> List<T>.drop(n: Int): List<T>

Returns

List.

Examples

In this example, we take a list with five elements. We drop the first two elements using drop() function.

Kotlin Program

fun main(args: Array<String>) {
    var list = listOf(2, 4, 6, 8, 10)
    var result = list.drop(2)
    println(result)
}

Output

[6, 8, 10]

If the n passed as argument to drop() is greater than the length of list, then drop() returns an empty list.

Kotlin Program

fun main(args: Array<String>) {
    var list = listOf(2, 4, 6, 8, 10)
    var result = list.drop(7)
    println(result)
}

Output

[]

Conclusion

In this Kotlin Tutorial, we learned how to drop/delete first n elements of given list, using Kotlin List.drop() function.