uniteEither

fun <A, B> Sequence<Either<A, B>>.uniteEither(): Sequence<B>

fun <A, B> Iterable<Either<A, B>>.~~uniteEither~~(): List<B>

Deprecated

Use mapNotNull and orNull instead.

Replace with

mapNotNull { it.orNull() }

fun <A, B> Option<Either<A, B>>.~~uniteEither~~(): Option<B>

Deprecated

This API is niche and will be removed in the future. If this method is crucial for you, please let us know on the Arrow Github. Thanks! https://github.com/arrow-kt/arrow/issues Prefer using the Option DSL or explicit flatMap

Replace with

import arrow.core.Option
import arrow.core.Some
import arrow.core.None

flatMap<B> { either -> either.fold<Option<B>>({ None }, ::Some) }