onEach

Performs the given action on each element and returns the array itself, enabling method chaining. Use it for side effects like logging or debugging within a pipeline of transformations.

Signature

inline fun <T, D : Dimension, C : MultiArray<T, D>> C.onEach(
    action: (T) -> Unit
): C

Parameters

Parameter	Type	Description
`action`	`(T) -> Unit`	Action to perform on each element.

Returns: The original array C, enabling method chaining.

Example

val a = mk.ndarray(mk[1, 2, 3])

val result = a
    .onEach { print("$it ") }  // prints: 1 2 3
    .map { it * 2 }
// result: [2, 4, 6]

28 February 2026