orEmpty

inline fun <T> Sequence<T>?.orEmpty(): Sequence<T>

Returns this sequence if it's not null and the empty sequence otherwise.

Since Kotlin

1.3

Samples

import samples.*
import kotlin.test.*
fun main() { 
   //sampleStart 
   val nullSequence: Sequence<Int>? = null
assertPrints(nullSequence.orEmpty().toList(), "[]")

val sequence: Sequence<Int>? = sequenceOf(1, 2, 3)
assertPrints(sequence.orEmpty().toList(), "[1, 2, 3]") 
   //sampleEnd
}