Kotlin List forEach()
Syntax & Examples

Syntax of List.forEach()

The syntax of List.forEach() extension function is:

fun <T> Iterable<T>.forEach(action: (T) -> Unit)

This forEach() extension function of List performs the given action on each element.

✐ Examples

1 Example

In this example,

We create a list named list containing strings representing fruits.
We use the forEach function to print each element of the list to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf("apple", "banana", "cherry");
    list.forEach { println(it) };
}

Output

apple
banana
cherry

2 Example

In this example,

We create a list named list containing integers.
We use the forEach function to print each element of the list to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf(10, 20, 30);
    list.forEach { println(it) };
}

Output

10
20
30

3 Example

In this example,

We create a list named list containing characters representing alphabets.
We use the forEach function to print each element of the list to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list = listOf('a', 'b', 'c');
    list.forEach { println(it) };
}

Output

a
b
c

Summary

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