kotlin-stdlib/kotlin.collections/dropLast

dropLast

fun <T> Array<out T>.dropLast(n: Int): List<T>(source)
fun ByteArray.dropLast(n: Int): List<Byte>(source)
fun ShortArray.dropLast(n: Int): List<Short>(source)
fun IntArray.dropLast(n: Int): List<Int>(source)
fun LongArray.dropLast(n: Int): List<Long>(source)
fun FloatArray.dropLast(n: Int): List<Float>(source)
fun DoubleArray.dropLast(n: Int): List<Double>(source)
fun BooleanArray.dropLast(n: Int): List<Boolean>(source)
fun CharArray.dropLast(n: Int): List<Char>(source)
fun <T> List<T>.dropLast(n: Int): List<T>(source)

Returns a list containing all elements except last n elements.

Since Kotlin

1.0

Throws

if n is negative.

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val chars = ('a'..'z').toList()
println(chars.drop(23)) // [x, y, z]
println(chars.dropLast(23)) // [a, b, c]
println(chars.dropWhile { it < 'x' }) // [x, y, z]
println(chars.dropLastWhile { it > 'c' }) // [a, b, c] 
   //sampleEnd
}
@ExperimentalUnsignedTypes
fun UIntArray.dropLast(n: Int): List<UInt>(source)
@ExperimentalUnsignedTypes
fun ULongArray.dropLast(n: Int): List<ULong>(source)
@ExperimentalUnsignedTypes
fun UByteArray.dropLast(n: Int): List<UByte>(source)
@ExperimentalUnsignedTypes
fun UShortArray.dropLast(n: Int): List<UShort>(source)

Returns a list containing all elements except last n elements.

Since Kotlin

1.3

Throws

if n is negative.

Samples

import kotlin.test.*

fun main() { 
   //sampleStart 
   val chars = ('a'..'z').toList()
println(chars.drop(23)) // [x, y, z]
println(chars.dropLast(23)) // [a, b, c]
println(chars.dropWhile { it < 'x' }) // [x, y, z]
println(chars.dropLastWhile { it > 'c' }) // [a, b, c] 
   //sampleEnd
}