kotlin-stdlib/kotlin.text/last

last

fun CharSequence.last(): Char(source)

Returns the last character.

Since Kotlin

1.0

Throws

if the char sequence is empty.

Samples

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

fun main() { 
   //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
}
inline fun CharSequence.last(predicate: (Char) -> Boolean): Char(source)

Returns the last character matching the given predicate.

Since Kotlin

1.0

Throws

if no such character is found.

Samples

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

fun main() { 
   //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
}