object ZStream extends ZStreamPlatformSpecific with Serializable
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type
Fold[R, E, +A, S] = ZManaged[R, Nothing, (S, (S) ⇒ Boolean, (S, A) ⇒ ZIO[R, E, S]) ⇒ ZManaged[R, E, S]]
Describes an effectful fold over the elements of the stream.
Describes an effectful fold over the elements of the stream. Conceptually it is an effectful state transformation function in the
Renvironment that can fail with a checked errorE. It consumes stream elements of typeAand keeps state of typeS. It consists of three main components:- The current state represented by
S. 2. A continuation signal function (S => Boolean). Decides whether the fold should continue based on the current state. 3. Effectful step function ((S, A) => ZIO[R, E, S]) which takes as arguments the current state, the current stream element and effectfully produces the next state.
- The current state represented by
- implicit final class unTake[-R, +E, +A] extends AnyVal
Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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final
def
apply[A](as: A*): Stream[Nothing, A]
Creates a pure stream from a variable list of values
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final
def
asInstanceOf[T0]: T0
- Definition Classes
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final
def
bracket[R, E, A](acquire: ZIO[R, E, A])(release: (A) ⇒ ZIO[R, Nothing, _]): ZStream[R, E, A]
Creates a stream from a single value that will get cleaned up after the stream is consumed
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def
clone(): AnyRef
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- protected[java.lang]
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- @native() @throws( ... )
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final
def
die(ex: Throwable): Stream[Nothing, Nothing]
The stream that always dies with
ex. -
final
def
dieMessage(msg: String): Stream[Nothing, Nothing]
The stream that always dies with an exception described by
msg. -
final
def
effectAsync[R, E, A](register: ((ZIO[R, Option[E], A]) ⇒ Unit) ⇒ Unit, outputBuffer: Int = 16): ZStream[R, E, A]
Creates a stream from an asynchronous callback that can be called multiple times.
Creates a stream from an asynchronous callback that can be called multiple times. The optionality of the error type
Ecan be used to signal the end of the stream, by setting it toNone. -
final
def
effectAsyncInterrupt[R, E, A](register: ((ZIO[R, Option[E], A]) ⇒ Unit) ⇒ Either[Canceler, ZStream[R, E, A]], outputBuffer: Int = 16): ZStream[R, E, A]
Creates a stream from an asynchronous callback that can be called multiple times.
Creates a stream from an asynchronous callback that can be called multiple times. The registration of the callback returns either a canceler or synchronously returns a stream. The optionality of the error type
Ecan be used to signal the end of the stream, by setting it toNone. -
final
def
effectAsyncM[R, E, A](register: ((ZIO[R, Option[E], A]) ⇒ Unit) ⇒ ZIO[R, E, _], outputBuffer: Int = 16): ZStream[R, E, A]
Creates a stream from an asynchronous callback that can be called multiple times The registration of the callback itself returns an effect.
Creates a stream from an asynchronous callback that can be called multiple times The registration of the callback itself returns an effect. The optionality of the error type
Ecan be used to signal the end of the stream, by setting it toNone. -
final
def
effectAsyncMaybe[R, E, A](register: ((ZIO[R, Option[E], A]) ⇒ Unit) ⇒ Option[ZStream[R, E, A]], outputBuffer: Int = 16): ZStream[R, E, A]
Creates a stream from an asynchronous callback that can be called multiple times.
Creates a stream from an asynchronous callback that can be called multiple times. The registration of the callback can possibly return the stream synchronously. The optionality of the error type
Ecan be used to signal the end of the stream, by setting it toNone. -
final
val
empty: Stream[Nothing, Nothing]
The empty stream
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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final
def
fail[E](error: E): Stream[E, Nothing]
The stream that always fails with
error -
def
finalize(): Unit
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- @throws( classOf[java.lang.Throwable] )
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final
def
finalizer[R](finalizer: ZIO[R, Nothing, _]): ZStream[R, Nothing, Nothing]
Creates a stream that emits no elements, never fails and executes the finalizer before it ends.
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final
def
flatten[R, E, A](fa: ZStream[R, E, ZStream[R, E, A]]): ZStream[R, E, A]
Flattens nested streams.
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final
def
flattenPar[R, E, A](n: Int, outputBuffer: Int = 16)(fa: ZStream[R, E, ZStream[R, E, A]]): ZStream[R, E, A]
Flattens a stream of streams into a stream by executing a non-deterministic concurrent merge.
Flattens a stream of streams into a stream by executing a non-deterministic concurrent merge. Up to
nstreams may be consumed in parallel and up tooutputBufferelements may be buffered by this operator. -
final
def
fromChunk[A](c: Chunk[A]): Stream[Nothing, A]
Creates a stream from a zio.Chunk of values
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final
def
fromEffect[R, E, A](fa: ZIO[R, E, A]): ZStream[R, E, A]
Creates a stream from an effect producing a value of type
A -
final
def
fromIterable[A](as: Iterable[A]): Stream[Nothing, A]
Creates a stream from an iterable collection of values
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final
def
fromQueue[R, E, A](queue: ZQueue[_, _, R, E, _, A]): ZStream[R, E, A]
Creates a stream from a zio.ZQueue of values
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final
def
getClass(): Class[_]
- Definition Classes
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final
def
halt[E](cause: Cause[E]): ZStream[Any, E, Nothing]
The stream that always halts with
cause. -
def
hashCode(): Int
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- @native()
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final
def
isInstanceOf[T0]: Boolean
- Definition Classes
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final
def
managed[R, E, A](managed: ZManaged[R, E, A]): ZStream[R, E, A]
Creates a single-valued stream from a managed resource
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final
def
mergeAll[R, E, A](n: Int, outputBuffer: Int = 16)(streams: ZStream[R, E, A]*): ZStream[R, E, A]
Merges a variable list of streams in a non-deterministic fashion.
Merges a variable list of streams in a non-deterministic fashion. Up to
nstreams may be consumed in parallel and up tooutputBufferelements may be buffered by this operator. -
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
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final
val
never: Stream[Nothing, Nothing]
The stream that never produces any value or fails with any error.
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final
def
notify(): Unit
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- @native()
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final
def
notifyAll(): Unit
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final
def
range(min: Int, max: Int): Stream[Nothing, Int]
Constructs a stream from a range of integers (inclusive).
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final
def
repeatEffect[R, E, A](fa: ZIO[R, E, A]): ZStream[R, E, A]
Creates a stream from an effect producing a value of type
Awhich repeats forever -
final
def
repeatEffectWith[R, E, A](fa: ZIO[R, E, A], schedule: ZSchedule[R, Unit, _]): ZStream[R with Clock, E, A]
Creates a stream from an effect producing a value of type
Awhich repeats using the specified schedule -
final
def
succeed[A](a: A): Stream[Nothing, A]
Creates a single-valued pure stream
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final
def
succeedLazy[A](a: ⇒ A): Stream[Nothing, A]
Creates a single, lazily-evaluated-valued pure stream
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
- Definition Classes
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final
def
unfold[S, A](s: S)(f0: (S) ⇒ Option[(A, S)]): Stream[Nothing, A]
Creates a stream by peeling off the "layers" of a value of type
S -
final
def
unfoldM[R, E, A, S](s: S)(f0: (S) ⇒ ZIO[R, E, Option[(A, S)]]): ZStream[R, E, A]
Creates a stream by effectfully peeling off the "layers" of a value of type
S -
final
def
unwrap[R, E, A](fa: ZIO[R, E, ZStream[R, E, A]]): ZStream[R, E, A]
Creates a stream produced from an effect
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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