toDoubleArray
Returns an array of Double containing all of the elements of this generic array.
fun Array<out Double>.toDoubleArray(): DoubleArray(source)
fun main() {
val array = arrayOf(1.5, 2.5, 3.5)
val doubleArray: DoubleArray = array.toDoubleArray()
println(doubleArray.joinToString(prefix = "[", postfix = "]"))
}