@NonNull static fun <A : Any!, B : Any!> flatMap(@NonNull iterable: MutableIterable<A>, @NonNull mapper: (A) -> MutableIterable<B>!): MutableIterable<B>
Returns an iterable consisting of elements that were mapped with a function that is capable of returning an iterable. As the method is working directly with an iterable it needs to create one, thus it returns an ArrayList as an Iterable. If you want to get a different type please use Iterables#flatMap(Iterable, Supplier, Function1) method instead.
iterable - MutableIterable<A>: elements that should be mapped
mapper - (A) -> MutableIterable<B>!: function that performs mapping of elements
- type of the elements of the given iterable
- type of the elements of the resulting iterable
Return
MutableIterable<B>: iterable containing mapped elements
@NonNull static fun <A : Any!, B : Any!, C : MutableCollection<B>!> flatMap(@NonNull iterable: MutableIterable<A>, @NonNull supplier: Supplier<out C>, @NonNull mapper: (A) -> MutableIterable<B>!): C
Returns an iterable consisting of elements that were mapped with a function that is capable of returning an iterable.
iterable - MutableIterable<A>: elements that should be mapped
supplier - Supplier<out C>: supplier capable of returning the resulting iterable
mapper - (A) -> MutableIterable<B>!: function that performs mapping of elements
- type of the elements of the given iterable
- type of the elements of the resulting iterable
Return
C: collection containing mapped elements