mapIndexedNotNullTo

inline fun <T, R : Any, C : MutableCollection<in R>> Array<out T>.mapIndexedNotNullTo(
    destination: C,
    transform: (index: Int, T) -> R?
): C
(source)

Applies the given transform function to each element and its index in the original array and appends only the non-null results to the given destination.

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, C : MutableCollection<in R>> Iterable<T>.mapIndexedNotNullTo(
    destination: C,
    transform: (index: Int, T) -> R?
): C
(source)

Applies the given transform function to each element and its index in the original collection and appends only the non-null results to the given destination.

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.