Kotlin List any()
Syntax & Examples

Syntax of List.any()

There are 2 variations for the syntax of List.any() extension function. They are:

fun <T> Iterable<T>.any(): Boolean

This extension function returns true if collection has at least one element.

fun <T> Iterable<T>.any(predicate: (T) -> Boolean): Boolean

This extension function returns true if at least one element matches the given predicate.

✐ Examples

1 Example

In this example,

We create a list containing integers from 1 to 5.
We use the 'any' function without a predicate to check if the list has at least one element.
Since the list has elements, the 'any' function returns true.
We print the result, which is true.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf(1, 2, 3, 4, 5)
    val result = list.any()
    println(result) // Output: true
}

Output

true

2 Example

In this example,

We create a list containing integers from 1 to 5.
We use the 'any' function with a predicate that checks if any element is greater than 3.
Since the list contains elements greater than 3 (4 and 5), the 'any' function returns true.
We print the result, which is true.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf(1, 2, 3, 4, 5)
    val result = list.any { it > 3 }
    println(result) // Output: true
}

Output

true

3 Example

In this example,

We create a list containing integers from 1 to 5.
We use the 'any' function with a predicate that checks if any element is greater than 10.
Since none of the elements in the list are greater than 10, the 'any' function returns false.
We print the result, which is false.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf(1, 2, 3, 4, 5)
    val result = list.any { it > 10 }
    println(result) // Output: false
}

Output

false

Summary

In this Kotlin tutorial, we learned about any() extension function of List: the syntax and few working examples with output and detailed explanation for each example.