isNotEmpty
Returns true if the array is not empty.
Since Kotlin
1.0Returns true if the collection is not empty.
Since Kotlin
1.0Samples
import kotlin.test.*
fun main() {
//sampleStart
val empty = emptyList<Any>()
println("empty.isNotEmpty() is ${empty.isNotEmpty()}") // false
val collection = listOf('a', 'b', 'c')
println("collection.isNotEmpty() is ${collection.isNotEmpty()}") // true
//sampleEnd
}Returns true if this map is not empty.
Since Kotlin
1.0Samples
import kotlin.test.*
import java.util.*
fun main() {
//sampleStart
fun totalValue(statisticsMap: Map<String, Int>): String =
when {
statisticsMap.isNotEmpty() -> {
val total = statisticsMap.values.sum()
"Total: [$total]"
}
else -> "<No values>"
}
val emptyStats: Map<String, Int> = mapOf()
println(totalValue(emptyStats)) // <No values>
val stats: Map<String, Int> = mapOf("Store #1" to 1247, "Store #2" to 540)
println(totalValue(stats)) // Total: [1787]
//sampleEnd
}