mapNotNull

inline fun <R : Any> CharSequence.mapNotNull(transform: (Char) -> R?): List<R>

Returns a list containing only the non-null results of applying the given transform function to each character in the original char sequence.

Samples

import samples.*
import kotlin.test.*
fun main() { 
   //sampleStart 
   val strings: List<String> = listOf("12a", "45", "", "3")
val ints: List<Int> = strings.mapNotNull { it.toIntOrNull() }

assertPrints(ints, "[45, 3]")
assertPrints(ints.sum(), "48") 
   //sampleEnd
}