last

Returns the last element of the array, or the last element matching a predicate. Throws NoSuchElementException if the array is empty or no match is found; use lastOrNull for a safe variant that returns null instead.

Signatures

fun <T, D : Dimension> MultiArray<T, D>.last(): T

inline fun <T, D : Dimension> MultiArray<T, D>.last(
    predicate: (T) -> Boolean
): T

fun <T, D : Dimension> MultiArray<T, D>.lastOrNull(): T?

inline fun <T, D : Dimension> MultiArray<T, D>.lastOrNull(
    predicate: (T) -> Boolean
): T?

Parameters

Parameter	Type	Description
`predicate`	`(T) -> Boolean`	Condition to match the last element against.

Returns:

last(): the last element. Throws NoSuchElementException if the array is empty.
last(predicate): the last matching element. Throws NoSuchElementException if none match.
lastOrNull()/lastOrNull(predicate): same as above but returns null instead of throwing.

Example

val a = mk.ndarray(mk[10, 20, 30])

a.last()                 // 30
a.last { it < 25 }       // 20
a.lastOrNull { it > 50 } // null

28 February 2026