filter
inline fun CharSequence.filterIndexed(predicate: (index: Int, Char) -> Boolean): CharSequence
Content copied to clipboard
Returns a char sequence containing only those characters from the original char sequence that match the given predicate.
Samples
import samples.*
import kotlin.test.*
fun main() {
//sampleStart
val numbers: List<Int> = listOf(0, 1, 2, 3, 4, 8, 6)
val numbersOnSameIndexAsValue = numbers.filterIndexed { index, i -> index == i }
assertPrints(numbersOnSameIndexAsValue, "[0, 1, 2, 3, 4, 6]")
//sampleEnd
}Parameters
predicate
function that takes the index of a character and the character itself and returns the result of predicate evaluation on the character.
inline fun String.filterIndexed(predicate: (index: Int, Char) -> Boolean): String
Content copied to clipboard
Returns a string containing only those characters from the original string that match the given predicate.
Samples
import samples.*
import kotlin.test.*
fun main() {
//sampleStart
val numbers: List<Int> = listOf(0, 1, 2, 3, 4, 8, 6)
val numbersOnSameIndexAsValue = numbers.filterIndexed { index, i -> index == i }
assertPrints(numbersOnSameIndexAsValue, "[0, 1, 2, 3, 4, 6]")
//sampleEnd
}Parameters
predicate
function that takes the index of a character and the character itself and returns the result of predicate evaluation on the character.