Observable
Related Docs:
class Observable
| package reactive
Cats instances for Observable.
Exposes extension methods for deprecated Observable methods.
An Operator is a function for transforming observers,
that can be used for lifting observables.
An Operator is a function for transforming observers,
that can be used for lifting observables.
Given a sequence of elements, builds an observable from it.
Implicit type class instances for Observable.
Transforms a non-strict Coeval value
into an Observable that emits a single element.
Creates a combined observable from 2 source observables.
Creates a combined observable from 2 source observables.
This operator behaves in a similar way to zip2,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
stream1: 1 - - 2 - - 3 - 4 - - stream2: 1 - - 2 - 3 - - - - 4 result: (1, 1), (2, 2), (2, 3), (3, 3), (4, 3), (4, 4)
Creates a combined observable from 3 source observables.
Creates a combined observable from 3 source observables.
This operator behaves in a similar way to zip3,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 4 source observables.
Creates a combined observable from 4 source observables.
This operator behaves in a similar way to zip4,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 5 source observables.
Creates a combined observable from 5 source observables.
This operator behaves in a similar way to zip5,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 6 source observables.
Creates a combined observable from 6 source observables.
This operator behaves in a similar way to zip6,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Given an observable sequence, it combines them together (using combineLatest) returning a new observable that generates sequences.
Creates a combined observable from 2 source observables.
Creates a combined observable from 2 source observables.
This operator behaves in a similar way to zipMap2,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
stream1: 1 - - 2 - - 3 - 4 - - stream2: 1 - - 2 - 3 - - - - 4 result: (1, 1), (2, 2), (2, 3), (3, 3), (4, 3), (4, 4)
Creates a combined observable from 3 source observables.
Creates a combined observable from 3 source observables.
This operator behaves in a similar way to zipMap3,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 4 source observables.
Creates a combined observable from 4 source observables.
This operator behaves in a similar way to zipMap4,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 5 source observables.
Creates a combined observable from 5 source observables.
This operator behaves in a similar way to zipMap5,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Creates a combined observable from 6 source observables.
Creates a combined observable from 6 source observables.
This operator behaves in a similar way to zipMap6,
but while zip emits items only when all of the zipped source
observables have emitted a previously unzipped item, combine
emits an item whenever any of the source Observables emits an
item (so long as each of the source Observables has emitted at
least one item).
Builds a new observable from a strict head and a lazily
evaluated tail.
Creates an observable from a function that receives a concurrent and safe Subscriber.Sync.
Creates an observable from a function that receives a concurrent and safe Subscriber.Sync.
This builder represents the safe way of building observables from data-sources that cannot be back-pressured.
is the overflow strategy that specifies the type of the underlying buffer (unbounded, that overflows the head, etc). This parameter can only specify a "synchronous" strategy, so no back-pressuring allowed.
(UNSAFE) is the
producer type
and can be MultiProducer or SingleProducer, specified as an
optimization option; if you don't know what you're doing, stick to
MultiProducer, which says that multiple producers can push
events at the same time, which is the default
Returns a new observable that creates a sequence from the given factory on each subscription.
Alias for eval.
Creates an observable that doesn't emit anything, but immediately
calls onComplete instead.
Given a non-strict value, converts it into an Observable that upon subscription, evaluates the expression and emits a single element.
Lifts a non-strict value into an observable that emits a single element, but upon subscription delay its evaluation by the specified timespan
Given a non-strict value, converts it into an Observable that emits a single element and that memoizes the value for subsequent invocations.
Given a list of source Observables, emits all of the items from the first of these Observables to emit an item or to complete, and cancel the rest.
Given a list of source Observables, emits all of the items from the first of these Observables to emit an item or to complete, and cancel the rest.
stream1: - - 1 1 1 - 1 - 1 - - stream2: - - - - - 2 2 2 2 2 2 result: - - 1 1 1 - 1 - 1 - -
Converts to Observable from any F[_] that has an ObservableLike
instance.
Converts to Observable from any F[_] that has an ObservableLike
instance.
Supported types includes, but is not necessarily limited to:
Given an initial state and a generator function that produces the next state and the next element in the sequence, creates an observable that keeps generating elements produced by our generator function.
Version of fromAsyncStateAction that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of fromAsyncStateAction that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.FuturefromAsyncStateAction for a version specialized for Task
Safely converts a java.io.Reader into an observable that will
emit Array[Char] elements.
Safely converts a java.io.Reader into an observable that will
emit Array[Char] elements.
Compared with fromCharsReaderUnsafe, this version:
is the Task[Reader] generator to convert into an observable
is the maximum length of the emitted arrays of chars
Version of fromCharsReader that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of fromCharsReader that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Converts a java.io.Reader into an observable that will emit
Array[Char] elements.
Converts a java.io.Reader into an observable that will emit
Array[Char] elements.
UNSAFE WARNING: this is an unsafe function, because reading from a reader is a destructive process, also violating referential transparency. Therefore only a single subscriber is supported, the result being a single-subscriber observable. If multiple subscribers are attempted, all subscribers, except for the first one, will be terminated with a APIContractViolationException.
UNSAFE PROTOCOL: the created Observable does not close the given
Reader. Usually it's the producer of a resource that needs
to deallocate the resource.
This operation will start processing on the current
thread (on subscribe()), so in order to not block, it might be better to also do an
executeAsync, or you may want to use the
AlwaysAsyncExecution
model, which can be configured per Scheduler, see
Scheduler.withExecutionModel,
or per Observable, see Observable.executeWithModel.
is the Reader to convert into an observable
is the maximum length of the emitted arrays of chars
fromCharsReader for the safe version
Builds a Observable instance out of a Scala Either.
Builds an Observable instance out of a Scala Either.
Converts a Scala Future provided into an Observable.
Converts a Scala Future provided into an Observable.
If the created instance is a
CancelableFuture,
then it will be used for the returned
Cancelable on subscribe.
Safely converts a java.io.InputStream into an observable that will
emit Array[Byte] elements.
Safely converts a java.io.InputStream into an observable that will
emit Array[Byte] elements.
Compared with fromInputStreamUnsafe, this version:
is the Task[InputStream] generator to convert into an observable
is the maximum length of the emitted arrays of bytes
Version of fromInputStream that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of fromInputStream that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Converts a java.io.InputStream into an observable that will
emit Array[Byte] elements.
Converts a java.io.InputStream into an observable that will
emit Array[Byte] elements.
UNSAFE WARNING: this is an unsafe function, because reading from an input stream is a destructive process, also violating referential transparency. Therefore only a single subscriber is supported, the result being a single-subscriber observable. If multiple subscribers are attempted, all subscribers, except for the first one, will be terminated with a APIContractViolationException.
UNSAFE PROTOCOL: the created Observable does not close the given
InputStream. Usually it's the producer of a resource that needs
to deallocate the resource.
This operation will start processing on the current
thread (on subscribe()), so in order to not block, it might be better to also do an
executeAsync, or you may want to use the
AlwaysAsyncExecution
model, which can be configured per Scheduler, see
Scheduler.withExecutionModel,
or per Observable, see Observable.executeWithModel.
is the InputStream to convert into an observable
is the maximum length of the emitted arrays of bytes
fromInputStream for the safe version
Converts any Iterable into an Observable.
Wraps a scala.Iterator into an Observable in the context of a
cats.effect.Resource,
which allows for specifying a finalizer.
Wraps a scala.Iterator into an Observable in the context of a
cats.effect.Resource,
which allows for specifying a finalizer.
fromIteratorUnsafe for the unsafe version that can wrap an iterator directly
fromIterator(task) for a version that uses Task for suspending side effects
Wraps a scala.Iterator into an Observable.
Wraps a scala.Iterator into an Observable.
This function uses Task in order to suspend
the creation of the Iterator, because reading from an Iterator
is a destructive process. The Task is being used as a "factory",
in pace of scala.Iterable.
Example:
import monix.eval.Task Observable.fromIterator(Task(Iterator.from(1)))
fromIteratorUnsafe for the unsafe version that can wrap an iterator directly
fromIterator(Resource) for a version
that uses cats.effect.Resource
Version of fromIterator that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of fromIterator that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Converts any Iterator into an observable.
Converts any Iterator into an observable.
UNSAFE WARNING: reading from an Iterator is a destructive process.
Therefore only a single subscriber is supported, the result being
a single-subscriber observable. If multiple subscribers are attempted,
all subscribers, except for the first one, will be terminated with a
APIContractViolationException.
to transform into an observable
fromIterator(task) or fromIterator(resource) for safe alternatives
Safely converts a java.io.BufferedReader into an observable that will
emit String elements corresponding to text lines from the input.
Safely converts a java.io.BufferedReader into an observable that will
emit String elements corresponding to text lines from the input.
According to the specification of BufferedReader, a line is considered
to be terminated by any one of a line feed (\n), a carriage return (\r),
or a carriage return followed immediately by a linefeed.
Compared with fromLinesReaderUnsafe, this version:
is the Task[BufferedReader] generator to convert into an observable
Version of fromLinesReader that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of fromLinesReader that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Converts a java.io.BufferedReader into an observable that will emit
String text lines from the input.
Converts a java.io.BufferedReader into an observable that will emit
String text lines from the input.
According to the specification of BufferedReader, a line is considered
to be terminated by any one of a line feed (\n), a carriage return (\r),
or a carriage return followed immediately by a linefeed.
UNSAFE WARNING: this is an unsafe function, because reading from a reader is a destructive process, also violating referential transparency. Therefore only a single subscriber is supported, the result being a single-subscriber observable. If multiple subscribers are attempted, all subscribers, except for the first one, will be terminated with a APIContractViolationException.
UNSAFE PROTOCOL: the created Observable does not close the given
Reader. Usually it's the producer of a resource that needs
to deallocate the resource.
is the Reader to convert into an observable
fromLinesReader for the safe version
Given a org.reactivestreams.Publisher, converts it into a
Monix / Rx Observable.
Given a org.reactivestreams.Publisher, converts it into a
Monix / Rx Observable.
See the Reactive Streams protocol that Monix implements.
is the org.reactivestreams.Publisher reference to
wrap into an Observable
a strictly positive number, representing the size
of the buffer used and the number of elements requested on each
cycle when communicating demand, compliant with the
reactive streams specification. If Int.MaxValue is given,
then no back-pressuring logic will be applied (e.g. an unbounded
buffer is used and the source has a license to stream as many
events as it wants).
Observable.toReactive for converting an Observable to
a reactive publisher.
Given a org.reactivestreams.Publisher, converts it into a
Monix / Rx Observable.
Given a org.reactivestreams.Publisher, converts it into a
Monix / Rx Observable.
See the Reactive Streams protocol that Monix implements.
is the org.reactivestreams.Publisher reference to
wrap into an Observable
Observable.toReactive for converting an Observable to
a reactive publisher.
Transforms any cats.effect.Resource into an Observable.
Transforms any cats.effect.Resource into an Observable.
See the documentation for Resource.
import cats.effect.Resource import monix.eval.Task import java.io._ def openFileAsResource(file: File): Resource[Task, FileInputStream] = Resource.make(Task(new FileInputStream(file)))(h => Task(h.close())) def openFileAsStream(file: File): Observable[FileInputStream] = Observable.fromResource(openFileAsResource(file))
This example would be equivalent with usage of Observable.resource:
def openFileAsResource2(file: File): Observable[FileInputStream] = { Observable.resource(Task(new FileInputStream(file)))(h => Task(h.close())) }
This means that flatMap is safe to use:
def readBytes(file: File): Observable[Array[Byte]] = openFileAsStream(file).flatMap { in => Observable.fromInputStreamUnsafe(in) }
Given an initial state and a generator function that produces the next state and the next element in the sequence, creates an observable that keeps generating elements produced by our generator function.
Converts any Task into an Observable.
Converts any Task into an Observable.
import monix.eval.Task val task = Task.eval("Hello!") Observable.fromTask(task)
Converts generic F[_] effects to Observable.
Converts generic F[_] effects to Observable.
Currently supported data types:
Sample:
import cats.implicits._ import cats.effect.IO import scala.concurrent.duration._ import monix.execution.Scheduler.global import monix.catnap.SchedulerEffect // Needed for IO.sleep implicit val timer = SchedulerEffect.timerLiftIO[IO](global) val task = IO.sleep(5.seconds) *> IO(println("Hello!")) Observable.fromTaskLike(task)
Converts a Scala Try into an Observable.
Converts a Scala Try into an Observable.
import scala.util.Try val value = Try(1) Observable.fromTry(value)
Creates a new observable from this observable and another given observable by interleaving their items into a strictly alternating sequence.
Creates a new observable from this observable and another given observable by interleaving their items into a strictly alternating sequence.
So the first item emitted by the new observable will be the item emitted by
self, the second item will be emitted by the other observable, and so forth;
when either self or other calls onCompletes, the items will then be
directly coming from the observable that has not completed; when onError is
called by either self or other, the new observable will call onError and halt.
See merge for a more relaxed alternative that doesn't emit items in strict alternating sequence.
Creates an Observable that emits auto-incremented natural numbers (longs) spaced by a given time interval.
Creates an Observable that emits auto-incremented natural numbers
(longs) spaced by a given time interval. Starts from 0 with no
delay, after which it emits incremented numbers spaced by the
delay of time. The given delay of time acts as a fixed
delay between successive events.
the delay between 2 successive events
Creates an Observable that emits auto-incremented natural numbers
(longs) at a fixed rate, as given by the specified period.
Creates an Observable that emits auto-incremented natural numbers
(longs) at a fixed rate, as given by the specified period. The
time it takes to process an onNext event gets subtracted from
the specified period and thus the created observable tries to
emit events spaced by the given time interval, regardless of how
long the processing of onNext takes.
This version of the intervalAtFixedRate allows specifying an
initialDelay before events start being emitted.
is the initial delay before emitting the first event
the period between 2 successive onNext events
Creates an Observable that emits auto-incremented natural numbers
(longs) at a fixed rate, as given by the specified period.
Creates an Observable that emits auto-incremented natural numbers
(longs) at a fixed rate, as given by the specified period. The
time it takes to process an onNext event gets subtracted from
the specified period and thus the created observable tries to
emit events spaced by the given time interval, regardless of how
long the processing of onNext takes.
the period between 2 successive onNext events
Creates an Observable that emits auto-incremented natural numbers (longs) spaced by a given time interval.
Creates an Observable that emits auto-incremented natural numbers
(longs) spaced by a given time interval. Starts from 0 with no
delay, after which it emits incremented numbers spaced by the
delay of time. The given delay of time acts as a fixed
delay between successive events.
the delay between 2 successive events
Creates an Observable that emits auto-incremented natural numbers (longs) spaced by a given time interval.
Creates an Observable that emits auto-incremented natural numbers
(longs) spaced by a given time interval. Starts from 0 with initialDelay,
after which it emits incremented numbers spaced by the
delay of time. The given delay of time acts as a fixed
delay between successive events.
This version of the intervalWithFixedDelay allows specifying an
initialDelay before events start being emitted.
is the delay to wait before emitting the first event
the time to wait between 2 successive events
Returns a F ~> Coeval (FunctionK) for transforming any
supported data-type into Observable.
Creates an input channel and an output observable pair for building a multicast data-source.
Creates an input channel and an output observable pair for building a multicast data-source.
Useful for building multicast observables from data-sources that cannot be back-pressured.
Prefer Observable.create when possible.
is the multicast strategy to use (e.g. publish, behavior, reply, async)
is the overflow strategy for the buffer that gets placed in front (since this will be a hot data-source that cannot be back-pressured)
Creates an input channel and an output observable pair for building a multicast data-source.
Creates an input channel and an output observable pair for building a multicast data-source.
Useful for building multicast observables from data-sources that cannot be back-pressured.
Prefer Observable.create when possible.
is the multicast strategy to use (e.g. publish, behavior, reply, async)
Creates an Observable that doesn't emit anything and that never completes.
Returns an Observable that on execution emits the given strict value.
cats.NonEmptyParallel instance for Observable.
Lifts an element into the Observable context.
Lifts an element into the Observable context.
Alias for now.
Creates an Observable that emits an error.
Creates an Observable that emits items in the given range.
Creates an Observable that emits items in the given range.
the range start
the range end
increment step, either positive or negative
Creates an Observable that continuously emits the given item repeatedly.
Repeats the execution of the given task, emitting
the results indefinitely.
Repeats the evaluation of given effectful value, emitting the results indefinitely.
Creates a Observable that depends on resource allocated by a
monadic value, ensuring the resource is released.
Creates a Observable that depends on resource allocated by a
monadic value, ensuring the resource is released.
Typical use-cases are working with files or network sockets
import monix.eval.Task import java.io.PrintWriter val printer = Observable.resource { Task(new PrintWriter("./lines.txt")) } { writer => Task(writer.close()) } // Safely use the resource, because the release is // scheduled to happen afterwards val writeLines = printer.flatMap { writer => Observable .fromIterator(Task(Iterator.from(1))) .mapEval(i => Task { writer.println(s"Line #\$i") }) } // Write 100 numbered lines to the file, closing the writer // when finished (after `runAsync`): writeLines.take(100).completedL
resource to acquire at the start of the stream
function that releases the acquired resource
Creates a stream that depends on resource allocated by a monadic value, ensuring the resource is released.
Creates a stream that depends on resource allocated by a monadic value, ensuring the resource is released.
Typical use-cases are working with files or network sockets
import cats.effect.ExitCase import monix.eval.Task import java.io.PrintWriter val printer = Observable.resourceCase { Task(new PrintWriter("./lines.txt")) } { case (writer, ExitCase.Canceled | ExitCase.Completed) => Task(writer.close()) case (writer, ExitCase.Error(e)) => Task { println(e.getMessage); writer.close() } } // Safely use the resource, because the release is // scheduled to happen afterwards val writeLines = printer.flatMap { writer => Observable .fromIterator(Task(Iterator.from(1))) .mapEval(i => Task { writer.println(s"Line #\$i") }) } // Write 100 numbered lines to the file, closing the writer // when finished (after `runAsync`): writeLines.take(100).completedL
an effect that acquires an expensive resource
function that releases the acquired resource
Version of resourceCase that can work with generic F[_] tasks,
anything that's supported via monix.eval.TaskLike conversions.
Version of resourceCase that can work with generic F[_] tasks,
anything that's supported via monix.eval.TaskLike conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Version of resource that can work with generic F[_] tasks,
anything that's supported via monix.eval.TaskLike conversions.
Version of resource that can work with generic F[_] tasks,
anything that's supported via monix.eval.TaskLike conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.Future
Alias for defer.
Keeps calling f and concatenating the resulting observables
for each scala.util.Left event emitted by the source, concatenating
the resulting observables and pushing every scala.util.Right[B]
events downstream.
Keeps calling f and concatenating the resulting observables
for each scala.util.Left event emitted by the source, concatenating
the resulting observables and pushing every scala.util.Right[B]
events downstream.
Based on Phil Freeman's Stack Safety for Free.
It helps to wrap your head around it if you think of it as being
equivalent to this inefficient and unsafe implementation (for Observable):
// Don't do this kind of recursion, because `flatMap` can throw // stack overflow errors: def tailRecM[A, B](a: A)(f: (A) => Observable[Either[A, B]]): Observable[B] = f(a).flatMap { case Right(b) => Observable.pure(b) case Left(nextA) => tailRecM(nextA)(f) }
Create an Observable that repeatedly emits the given item, until
the underlying Observer cancels.
Wraps this Observable into a org.reactivestreams.Publisher.
Wraps this Observable into a org.reactivestreams.Publisher.
See the Reactive Streams
protocol that Monix implements.
Given an initial state and a generator function that produces the
next state and the next element in the sequence, creates an
observable that keeps generating elements produced by our
generator function until None is returned.
Given an initial state and a generator function that produces the
next state and the next element in the sequence, creates an
observable that keeps generating elements produced by our
generator function until None is returned.
Observable.unfold(0)(i => if (i < 10) Some((i, i + 1)) else None).toListL result: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Given an initial state and a generator function that produces the
next state and the next element in the sequence, creates an
observable that keeps generating elements produced by our
generator function until None is returned.
Given an initial state and a generator function that produces the
next state and the next element in the sequence, creates an
observable that keeps generating elements produced by our
generator function until None is returned.
Observable.unfoldEval(0)(i => if (i < 10) Task.now(Some((i, i + 1))) else Task.now(None)).toListL result: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Version of unfoldEval that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
Version of unfoldEval that can work with generic
F[_] tasks, anything that's supported via monix.eval.TaskLike
conversions.
So you can work among others with:
cats.effect.IOmonix.eval.Coevalscala.concurrent.FutureunfoldEval for a version specialized for Task
Reusable value for an Observable[Unit] that emits a single
event, the implementation for cats.effect.Applicative.unit.
Given a subscribe function, lifts it into an Observable.
Given a subscribe function, lifts it into an Observable.
This function is unsafe to use because users have to know and apply the Monix communication contract, related to thread-safety, communicating demand (back-pressure) and error handling.
Only use if you know what you're doing. Otherwise prefer create.
Creates a new observable from two observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from two observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
stream1: 1 - - 2 - - 3 - 4 - - stream2: 1 - - 2 - 3 - - - - 4 result: (1, 1), (2, 2), (3, 3), (4, 4)
See combineLatestMap2 for a more relaxed alternative that doesn't combine items in strict sequence.
Creates a new observable from three observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from three observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap3 for a more relaxed alternative that doesn't combine items in strict sequence.
Creates a new observable from four observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from four observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap4 for a more relaxed alternative that doesn't combine items in strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap5 for a more relaxed alternative that doesn't combine items in strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap5 for a more relaxed alternative that doesn't combine items in strict sequence.
Given an observable sequence, it zips them together returning a new observable that generates sequences.
Creates a new observable from two observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from two observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
stream1: 1 - - 2 - - 3 - 4 - - stream2: 1 - - 2 - 3 - - - - 4 result: (1, 1), (2, 2), (3, 3), (4, 4)
See combineLatestMap2 for a more relaxed alternative that doesn't combine items in strict sequence.
is the mapping function applied over the generated pairs
Creates a new observable from three observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from three observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap3 for a more relaxed alternative that doesn't combine items in strict sequence.
is the mapping function applied over the generated pairs
Creates a new observable from four observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from four observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap4 for a more relaxed alternative that doesn't combine items in strict sequence.
is the mapping function applied over the generated pairs
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap5 for a more relaxed alternative that doesn't combine items in strict sequence.
is the mapping function applied over the generated pairs
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
Creates a new observable from five observable sequences by combining their items in pairs in a strict sequence.
So the first item emitted by the new observable will be the result of the function applied to the first items emitted by each of the source observables; the second item emitted by the new observable will be the result of the function applied to the second items emitted by each of those observables; and so forth.
See combineLatestMap5 for a more relaxed alternative that doesn't combine items in strict sequence.
is the mapping function applied over the generated pairs
DEPRECATED — please switch to the concat method.
DEPRECATED — please switch to the concat method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).concat
(Since version 3.0.0) Switch to Observable(list).concat
DEPRECATED — please switch to the concatDelayErrors method.
DEPRECATED — please switch to the concatDelayErrors method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).concatDelayErrors
(Since version 3.0.0) Switch to Observable(list).concatDelayErrors
DEPRECATED — please switch to the flatten method.
DEPRECATED — please switch to the flatten method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).flatten
(Since version 3.0.0) Switch to Observable(list).flatten
DEPRECATED — please switch to the flattenDelayErrors method.
DEPRECATED — please switch to the flattenDelayErrors method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).flattenDelayErrors
(Since version 3.0.0) Switch to Observable(list).flattenDelayErrors
DEPRECATED — please use .executeOn.
DEPRECATED — please use .executeOn.
The reason for the deprecation is the repurposing of the word "fork" in Task.
(Since version 3.0.0) Please use Observable!.executeOn
DEPRECATED — please use .executeAsync.
DEPRECATED — please use .executeAsync.
The reason for the deprecation is the repurposing of the word "fork" in Task.
(Since version 3.0.0) Please use Observable!.executeAsync
DEPRECATED — switch to Observable.from.
DEPRECATED — switch to Observable.from.
(Since version 3.0.0) Switch to Observable.from
DEPRECATED — switch to Observable.from.
DEPRECATED — switch to Observable.from.
(Since version 3.0.0) Switch to Observable.from
DEPRECATED — please switch to the merge method.
DEPRECATED — please switch to the merge method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).merge
(Since version 3.0.0) Switch to Observable(list).merge
DEPRECATED — please switch to the merge method.
DEPRECATED — please switch to the merge method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).merge
(Since version 3.0.0) Switch to Observable(list).merge
DEPRECATED — please switch to the switch method.
DEPRECATED — please switch to the switch method.
This deprecation was made because there's no point in having this function described both as a method and as a companion object function. In general in API design we either have both for all functions, or we have to choose.
Switch to: Observable(list).switch
(Since version 3.0.0) Switch to Observable(list).switch
Observable builders.