Kotlin List.isEmpty() – Examples

Kotlin List.isEmpty()

The Kotlin List.isEmpty() function returns true if the list is empty meaning no elements in the list, false otherwise.

Syntax

List.isEmpty()

Example 1

In this example,

1. Take an empty list.
2. Call isEmpty() function on the list. As our list is empty, the function should return true.

Program

fun main(args: Array<String>) {
    val list1 = listOf<String>()
    val result = list1.isEmpty()
    print(result)
}

Output

true

Example 2

In this example,

1. Take an list with some elements in it.
2. Call isEmpty() function on the list. As our list is not empty, the function should return false.

Program

fun main(args: Array<String>) {
    val list1 = listOf(25, 41, 20)
    val result = list1.isEmpty()
    print(result)
}

Output

false