fun <T, R> Sequence<T>.map(transform: (T) -> R): Sequence<R>

Returns a sequence containing the results of applying the given transform function to each element in the original sequence.

The operation is intermediate and stateless.

import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val numbers = listOf(1, 2, 3)
println(numbers.map { it * it }) // [1, 4, 9]
//sampleEnd
}