map
inline fun <T, R> Array<out T>.map(
transform: (T) -> R
): List<R>inline fun <R> ShortArray.map(
transform: (Short) -> R
): List<R>inline fun <R> FloatArray.map(
transform: (Float) -> R
): List<R>inline fun <R> DoubleArray.map(
transform: (Double) -> R
): List<R>inline fun <R> BooleanArray.map(
transform: (Boolean) -> R
): List<R>@ExperimentalUnsignedTypes inline fun <R> ULongArray.map(
transform: (ULong) -> R
): List<R>@ExperimentalUnsignedTypes inline fun <R> UByteArray.map(
transform: (UByte) -> R
): List<R>@ExperimentalUnsignedTypes inline fun <R> UShortArray.map(
transform: (UShort) -> R
): List<R>Returns a list containing the results of applying the given transform function to each element in the original array.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val numbers = listOf(1, 2, 3)
println(numbers.map { it * it }) // [1, 4, 9]
//sampleEnd
}Returns a list containing the results of applying the given transform function to each element in the original collection.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val numbers = listOf(1, 2, 3)
println(numbers.map { it * it }) // [1, 4, 9]
//sampleEnd
}Returns a list containing the results of applying the given transform function to each entry in the original map.
import kotlin.test.*
import java.util.*
fun main(args: Array<String>) {
//sampleStart
val peopleToAge = mapOf("Alice" to 20, "Bob" to 21)
println(peopleToAge.map { (name, age) -> "$name is $age years old" }) // [Alice is 20 years old, Bob is 21 years old]
println(peopleToAge.map { it.value }) // [20, 21]
//sampleEnd
}