arrow-core/arrow.core/traverseEither

traverseEither

inline fun <E, A, B> Iterable<A>.traverseEither(f: (A) -> Either<E, B>): Either<E, List<B>>
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inline fun <E, A, B> NonEmptyList<A>.traverseEither(f: (A) -> Either<E, B>): Either<E, NonEmptyList<B>>
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fun <E, A, B> Sequence<A>.traverseEither(f: (A) -> Either<E, B>): Either<E, Sequence<B>>
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inline fun <K, E, A, B> Map<K, A>.traverseEither(f: (A) -> Either<E, B>): Either<E, Map<K, B>>
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