Add error and environment combinators for ZStream #1427
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Yes! |
iravid
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Awesome. We'll finally have this in 🎆 |
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@iravid This is the look of things clicking into place. 😄 💪 |
jdegoes
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Aug 18, 2019
| for { | ||
| finalizer <- Ref.make[Exit[_, _] => ZIO[R1, Nothing, Any]](_ => UIO.unit).toManaged_ | ||
| _ <- ZManaged.finalizerExit(e => finalizer.get.flatMap(_.apply(e))) | ||
| selfInputStream <- Ref.make[InputStream[R, E, A]](InputStream.end).toManaged_ |
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This pattern occurs so pervasively I think we should write a combinator to handle it (finalizer?). Basically creating a Ref, with some default action, then running some code, updating the default, and finally ensuring the finalizer is run at the end. Could be reasonably nice to use with ZManaged, I think.
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Good idea. This looked like a combinator for ZManaged - ZManaged.finalizerRef.
jdegoes
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Aug 18, 2019
| * Provides the stream with its required environment, which eliminates | ||
| * its dependency on `R`. | ||
| */ | ||
| final def provide(r: R): Stream[E, A] = |
jdegoes
reviewed
Aug 18, 2019
| * | ||
| * See also [[ZStream#catchAll]]. | ||
| */ | ||
| final def orElse[R1 <: R, E2, A1 >: A](that: => ZStream[R1, E2, A1]): ZStream[R1, E2, A1] = |
jdegoes
reviewed
Aug 18, 2019
| @@ -1476,6 +1640,30 @@ object ZStream extends ZStreamPlatformSpecific { | |||
| def dieMessage(m: String): InputStream[Any, Nothing, Nothing] = UIO.dieMessage(m) | |||
| def done[E, A](e: Exit[E, A]): InputStream[Any, E, A] = IO.done(e).mapError(Some(_)) | |||
| def fromPromise[E, A](p: Promise[E, A]): InputStream[Any, E, A] = p.await.mapError(Some(_)) | |||
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| def sequenceCause[E](c: Cause[Option[E]]): Option[Cause[E]] = | |||
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Awesome. Great job getting all those changes in. 🙏 🎉 |
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jdegoes
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| * is yielded as the result of the effect, allowing for control flows that require | ||
| * mutating finalizers. | ||
| */ | ||
| final def finalizerRef[R]( |
jdegoes
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Aug 22, 2019
| * is yielded as the result of the effect, allowing for control flows that require | ||
| * mutating finalizers. | ||
| */ | ||
| final def finalizerRef[R]( |
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At last,
Resolves #634
Resolves #817
cc @runtologist @mschuwalow