//arrow-core/arrow.core/flatten

flatten

common fun <A, B> Either<A, Either<A, B».flatten(): Either<A, B>

inline fun <A, B> Ior<A, Ior<A, B».flatten(SA: Semigroup<A>): Ior<A, B>

fun <A> Iterable<Iterable<A».flatten(): List<A>

fun <A> NonEmptyList<NonEmptyList<A».flatten(): NonEmptyList<A>

fun <A> Option<Option<A».flatten(): Option<A>

fun <A> Sequence<Sequence<A».flatten(): Sequence<A>

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