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Yotamho/ParallelNested.scala

Created December 17, 2020 09:05
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ParallelNested.scala
object ParallelNested {
// Taking inspiration from `cats.IO`'s `Parallel` instance:
// https://github.com/typelevel/cats-effect/blob/a6ebc9fd7f02dc15a74c0e9a1cfca3c843b63efb/core/shared/src/main/scala/cats/effect/IO.scala#L970-L988
implicit val nestedParallel = new NonEmptyParallel[Nested[IO, ValidatedNec[Throwable, *], *]] {
override type F = Nested[IO.Par, ValidatedNec[Throwable, *], *]
override def apply: Apply[F] = Apply[F]
override def flatMap: FlatMap[Nested[IO, ValidatedNec[Throwable, *], *]] = FlatMap[Nested[IO, ValidatedNec[Throwable, *], *]]
override def sequential: ~>[F, Nested[IO, ValidatedNec[Throwable, *], *]] = ???
override def parallel: ~>[Nested[IO, ValidatedNec[Throwable, *], *], F] = ???
}
}
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