asSequence 
  Creates a Sequence instance that wraps the original array returning its elements when being iterated.
Since Kotlin
1.0Samples
import kotlin.test.*
fun main() { 
   //sampleStart 
   val array = arrayOf('a', 'b', 'c')
val sequence = array.asSequence()
println(sequence.joinToString()) // a, b, c 
   //sampleEnd
}Creates a Sequence instance that wraps the original collection returning its elements when being iterated.
Since Kotlin
1.0Samples
import kotlin.test.*
fun main() { 
   //sampleStart 
   val collection = listOf('a', 'b', 'c')
val sequence = collection.asSequence()
println(sequence.joinToString()) // a, b, c 
   //sampleEnd
}Creates a Sequence instance that wraps the original map returning its entries when being iterated.