kotlin-stdlib / kotlin.collections / toDoubleArray toDoubleArray Common JVM JS Native 1.0 fun Array < out Double > . toDoubleArray ( ) : DoubleArray (source) Returns an array of Double containing all of the elements of this generic array. Common JVM JS Native 1.0 fun Collection < Double > . toDoubleArray ( ) : DoubleArray (source) Returns an array of Double containing all of the elements of this collection.