isNullOrEmpty

import kotlin.test.*

fun main() { 
   //sampleStart 
   val nullArray: Array? = null
println("nullArray.isNullOrEmpty() is ${nullArray.isNullOrEmpty()}") // true

val emptyArray: Array? = emptyArray()
println("emptyArray.isNullOrEmpty() is ${emptyArray.isNullOrEmpty()}") // true

val array: Array? = arrayOf('a', 'b', 'c')
println("array.isNullOrEmpty() is ${array.isNullOrEmpty()}") // false 
   //sampleEnd
}

import kotlin.math.*
import kotlin.test.*

fun main() { 
   //sampleStart 
   val nullList: List? = null
println("nullList.isNullOrEmpty() is ${nullList.isNullOrEmpty()}") // true

val empty: List? = emptyList()
println("empty.isNullOrEmpty() is ${empty.isNullOrEmpty()}") // true

val collection: List? = listOf('a', 'b', 'c')
println("collection.isNullOrEmpty() is ${collection.isNullOrEmpty()}") // false 
   //sampleEnd
}

import kotlin.test.*
import java.util.*

fun main() { 
   //sampleStart 
   val nullMap: Map? = null
println("nullMap.isNullOrEmpty() is ${nullMap.isNullOrEmpty()}") // true

val emptyMap: Map? = emptyMap()
println("emptyMap.isNullOrEmpty() is ${emptyMap.isNullOrEmpty()}") // true

val map: Map? = mapOf('a' to 1, 'b' to 2, 'c' to 3)
println("map.isNullOrEmpty() is ${map.isNullOrEmpty()}") // false 
   //sampleEnd
}