Kotlin List toFloatArray()
Syntax & Examples

Syntax of List.toFloatArray()

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

fun Collection<Float>.toFloatArray(): FloatArray

This toFloatArray() extension function of List returns an array of Float containing all of the elements of this collection.

✐ Examples

1 Example

In this example,

We create a list named floatList containing float values 1.2f, 3.4f, 5.6f.
We use the toFloatArray() function on floatList to convert it to a FloatArray.
We then print the floatArray to standard output using contentToString().

Kotlin Program

fun main(args: Array<String>) {
    val floatList = listOf(1.2f, 3.4f, 5.6f)
    val floatArray = floatList.toFloatArray()
    println(floatArray.contentToString())
}

Output

[1.2, 3.4, 5.6]

2 Example

In this example,

We create a list named floatList containing float values 1.1f, 2.2f, 3.3f.
We use the toFloatArray() function on floatList to convert it to a FloatArray.
We then print the floatArray to standard output using contentToString().

Kotlin Program

fun main(args: Array<String>) {
    val floatList = listOf(1.1f, 2.2f, 3.3f)
    val floatArray = floatList.toFloatArray()
    println(floatArray.contentToString())
}

Output

[1.1, 2.2, 3.3]

3 Example

In this example,

We create a list named floatList containing float values 0.0f, -1.5f, 4.8f.
We use the toFloatArray() function on floatList to convert it to a FloatArray.
We then print the floatArray to standard output using contentToString().

Kotlin Program

fun main(args: Array<String>) {
    val floatList = listOf(0.0f, -1.5f, 4.8f)
    val floatArray = floatList.toFloatArray()
    println(floatArray.contentToString())
}

Output

[0.0, -1.5, 4.8]

Summary

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