kotlin-stdlib/kotlin.text/flatMap

flatMap

inline fun <R> CharSequence.flatMap(transform: (Char) -> Iterable<R>): List<R>(source)

Returns a single list of all elements yielded from results of transform function being invoked on each character of original char sequence.

Since Kotlin

1.0

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val list = listOf("123", "45")
println(list.flatMap { it.toList() }) // [1, 2, 3, 4, 5] 
   //sampleEnd
}