lastOrNull

Common
JVM
JS
Native
1.0
fun CharSequence.lastOrNull(): Char?

Returns the last character, or null if the char sequence is empty.

import java.util.Locale
import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val string = "Kotlin 1.4.0"
println(string.last()) // 0
println(string.last { it.isLetter() }) // n
println(string.lastOrNull { it > 'z' }) // null
// string.last { it > 'z' } //  will fail

val emptyString = ""
println(emptyString.lastOrNull()) // null
// emptyString.last() //  will fail
//sampleEnd
}
Common
JVM
JS
Native
1.0
inline fun CharSequence.lastOrNull(
    predicate: (Char) -> Boolean
): Char?

Returns the last character matching the given predicate, or null if no such character was found.

import java.util.Locale
import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val string = "Kotlin 1.4.0"
println(string.last()) // 0
println(string.last { it.isLetter() }) // n
println(string.lastOrNull { it > 'z' }) // null
// string.last { it > 'z' } //  will fail

val emptyString = ""
println(emptyString.lastOrNull()) // null
// emptyString.last() //  will fail
//sampleEnd
}