mapIndexedNotNull

inline fun <T, R : Any> Array<out T>.mapIndexedNotNull(
    transform: (index: Int, T) -> R?
): List<R>
(source)

Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original array.

Parameters

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.

inline fun <T, R : Any> Iterable<T>.mapIndexedNotNull(
    transform: (index: Int, T) -> R?
): List<R>
(source)

Returns a list containing only the non-null results of applying the given transform function to each element and its index in the original collection.

Parameters

transform - function that takes the index of an element and the element itself and returns the result of the transform applied to the element.