Process
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object Process
| package stream
Alias for append
If this process halts due to Cause.End, runs p2 after this.
If this process halts due to Cause.End, runs p2 after this.
Otherwise halts with whatever caused this to Halt.
Apply this Process to an Iterable.
Apply this Process to an Iterable.
Apply a Wye to two Iterable inputs.
Apply a Wye to two Iterable inputs.
Mostly internal use function.
Mostly internal use function. Ensures this Process is run even
when being kill-ed. Used to ensure resource safety in various
combinators.
Transform the left input of the given Wye using a Process1.
Transform the left input of the given Wye using a Process1.
Transform the right input of the given Wye using a Process1.
Transform the right input of the given Wye using a Process1.
Catch exceptions produced by this Process, not including termination by Continue, End, Kill
and uses f to decide whether to resume a second process.
Alias for this |> process1.awaitOption.
Alias for this |> process1.awaitOption.
Alias for this |> process1.buffer(n).
Alias for this |> process1.buffer(n).
Alias for this |> process1.bufferAll.
Alias for this |> process1.bufferAll.
Alias for this |> process1.bufferBy(f).
Alias for this |> process1.bufferBy(f).
Attached cause when this Process terminates.
Attached cause when this Process terminates. See Cause.causedBy for semantics.
Alias for this |> process1.chunk(n).
Alias for this |> process1.chunk(n).
Alias for this |> process1.chunkAll.
Alias for this |> process1.chunkAll.
Alias for this |> process1.chunkBy(f).
Alias for this |> process1.chunkBy(f).
Alias for this |> process1.chunkBy2(f).
Alias for this |> process1.chunkBy2(f).
Alias for this |> process1.collect(pf).
Alias for this |> process1.collect(pf).
Alias for this |> process1.collectFirst(pf).
Alias for this |> process1.collectFirst(pf).
Transform the input of this Process1.
Transform the input of this Process1.
Transform the left input to a Wye.
Transform the left input to a Wye.
Transform the left input to a Tee.
Transform the left input to a Tee.
Transform the right input to a Wye.
Transform the right input to a Wye.
Transform the right input to a Tee.
Transform the right input to a Tee.
Alias for this |> process1.delete(f).
Alias for this |> process1.delete(f).
Converting requests for the left input into normal termination.
Converting requests for the left input into normal termination.
Note that Both requests are rewritten to fetch from the only input.
Converting requests for the right input into normal termination.
Converting requests for the right input into normal termination.
Note that Both requests are rewritten to fetch from the only input.
Used when a Process1, Tee, or Wye is terminated by awaiting
on a branch that is in the halted state or was killed.
Used when a Process1, Tee, or Wye is terminated by awaiting
on a branch that is in the halted state or was killed. Such a process
is given the opportunity to emit any final values. All Awaits are
converted to terminate with cause
Alias for this |> process1.distinctConsecutive.
Alias for this |> process1.distinctConsecutive.
Alias for this |> process1.distinctConsecutiveBy(f).
Alias for this |> process1.distinctConsecutiveBy(f).
Ignore all outputs of this Process.
Alias for this |> process1.drop(n).
Alias for this |> process1.drop(n).
Alias for this |> process1.dropLast.
Alias for this |> process1.dropLast.
Alias for this |> process1.dropLastIf(p).
Alias for this |> process1.dropLastIf(p).
Alias for this |> process1.dropRight(n).
Alias for this |> process1.dropRight(n).
Alias for this |> process1.dropWhile(f).
Alias for this |> process1.dropWhile(f).
Non-deterministic interleave of both streams.
Non-deterministic interleave of both streams. Emits values whenever either is defined. Note this terminates after BOTH sides terminate
Map over this Process to produce a stream of F-actions,
then evaluate these actions.
Alias for this |> process1.exists(f)
Alias for this |> process1.exists(f)
Alias for append
Feed a single input to this Process1.
Feed a single input to this Process1.
Alias for this |> process1.filter(f).
Alias for this |> process1.filter(f).
Alias for this |> process1.filterBy2(f).
Alias for this |> process1.filterBy2(f).
Alias for this |> process1.find(f)
Alias for this |> process1.find(f)
Generate a Process dynamically for each output of this Process, and
sequence these processes using append.
Alias for this |> process1.fold(b)(f).
Alias for this |> process1.fold(b)(f).
Alias for this |> process1.fold1(f).
Alias for this |> process1.fold1(f).
Alias for this |> process1.fold1Map(f)(M).
Alias for this |> process1.fold1Map(f)(M).
Alias for this |> process1.fold1Monoid(M)
Alias for this |> process1.fold1Monoid(M)
Alias for this |> process1.foldMap(f)(M).
Alias for this |> process1.foldMap(f)(M).
Alias for this |> process1.foldMonoid(M)
Alias for this |> process1.foldMonoid(M)
Alias for this |> process1.foldSemigroup(M).
Alias for this |> process1.foldSemigroup(M).
Alias for this |> process1.forall(f)
Alias for this |> process1.forall(f)
Produce a continuous stream from a discrete stream by using the most recent value.
Produce a continuous stream from a discrete stream by using the most recent value.
Map over this Process to produce a stream of F-actions,
then evaluate these actions in batches of bufSize, allowing
for nondeterminism in the evaluation order of each action in the
batch.
Catch some of the exceptions generated by this Process, rethrowing any
not handled by the given PartialFunction and stripping out any values
emitted before the error.
Alternate emitting elements from this and p2, starting with this.
Alternate emitting elements from this and p2, starting with this.
Alias for this |> process1.intersperse(sep).
Alias for this |> process1.intersperse(sep).
Returns true, if this process is halted
Causes this process to be terminated immediately with Kill cause,
giving chance for any cleanup actions to be run
Alias for this |> process1.last.
Alias for this |> process1.last.
Alias for this |> process1.last.
Alias for this |> process1.last.
Transform self to operate on the left hand side of an \/, passing
through any values it receives on the right.
Transform self to operate on the left hand side of an \/, passing
through any values it receives on the right. Note that this halts
whenever self halts.
Transform self to operate on the right hand side of an \/, passing
through any values it receives on the left.
Transform self to operate on the right hand side of an \/, passing
through any values it receives on the left. Note that this halts
whenever self halts.
Transforms the output values of this Process using f.
Alias for this |> process1.mapAccumulate(s)(f).
Alias for this |> process1.mapAccumulate(s)(f).
Alias for this |> process1.maximum.
Alias for this |> process1.maximum.
Alias for this |> process1.maximumBy(f).
Alias for this |> process1.maximumBy(f).
Alias for this |> process1.maximumOf(f).
Alias for this |> process1.maximumOf(f).
Non-deterministic interleave of both streams.
Non-deterministic interleave of both streams. Emits values whenever either is defined. Note this terminates after BOTH sides terminate
Alias for this |> process1.minimum.
Alias for this |> process1.minimum.
Alias for this |> process1.minimumBy(f).
Alias for this |> process1.minimumBy(f).
Alias for this |> process1.minimumOf(f).
Alias for this |> process1.minimumOf(f).
Returns result of channel evaluation on O side tupled with
original output value passed to channel.
Returns result of channel evaluation on O side tupled with
original output value passed to channel.
Returns result of channel evaluation tupled with original value passed to channel.
Returns result of channel evaluation tupled with original value passed to channel.
Returns result of channel evaluation on W side tupled with
original write value passed to channel.
Returns result of channel evaluation on W side tupled with
original write value passed to channel.
Run p2 after this Process completes normally, or in the event of an error.
Run p2 after this Process completes normally, or in the event of an error.
This behaves almost identically to append, except that p1 append p2 will
not run p2 if p1 halts with an Error or is killed. Any errors raised by
this are reraised after p2 completes.
Note that p2 is made into a finalizer using asFinalizer, so we
can be assured it is run even when this Process is being killed
by a downstream consumer.
If this Process completes with an error, call f to produce
the next state.
If this Process completes with an error, call f to produce
the next state. f is responsible for reraising the error if that
is the desired behavior. Since this function is often used for attaching
resource deallocation logic, the result of f is made into a finalizer
using asFinalizer, so we can be assured it is run even when this Process
is being killed by a downstream consumer.
When this Process halts, call f to produce the next state.
When this Process halts, call f to produce the next state.
Note that this function may be used to swallow or handle errors.
Attach supplied process only if process has been killed.
Attach supplied process only if process has been killed.
Since this function is often used for attaching resource
deallocation logic, the result of f is made into a finalizer
using asFinalizer, so we can be assured it is run even when
this Process is being killed by a downstream consumer.
Alias for this |> Process.await1.
Alias for this |> Process.await1.
Like attempt, but accepts a partial function.
Like attempt, but accepts a partial function. Unhandled errors are rethrown.
Feed the output of this Process as input of p1.
Feed the output of this Process as input of p1. The implementation
will fuse the two processes, so this process will only generate
values as they are demanded by p1. If p1 signals termination, this
is killed with same reason giving it an opportunity to cleanup.
converts sink to sink that first pipes received I0 to supplied p1
converts sink to sink that first pipes received I0 to supplied p1
Alias for this |> process1.prefixSums
Alias for this |> process1.prefixSums
Prepend a sequence of elements to the output of this Process.
Alias for this |> process1.reduce(f).
Alias for this |> process1.reduce(f).
Alias for this |> process1.reduceMap(f)(M).
Alias for this |> process1.reduceMap(f)(M).
Alias for this |> process1.reduceMonoid(M).
Alias for this |> process1.reduceMonoid(M).
Alias for this |> process1.reduceSemigroup(M).
Alias for this |> process1.reduceSemigroup(M).
Alias for this |> process1.repartition(p)(S)
Alias for this |> process1.repartition(p)(S)
Alias for this |> process1.repartition2(p)(S)
Alias for this |> process1.repartition2(p)(S)
Run this process until it halts, then run it again and again, as
long as no errors or Kill occur.
Run this Process, purely for its effects.
Collect the outputs of this Process[F,O] into a Monoid B, given a Monad[F] in
which we can catch exceptions.
Collect the outputs of this Process[F,O] into a Monoid B, given a Monad[F] in
which we can catch exceptions. This function is not tail recursive and
relies on the Monad[F] to ensure stack safety.
Run this Process solely for its final emitted value, if one exists.
Run this Process solely for its final emitted value, if one exists, using o2 otherwise.
Collect the outputs of this Process[F,O], given a Monad[F] in
which we can catch exceptions.
Collect the outputs of this Process[F,O], given a Monad[F] in
which we can catch exceptions. This function is not tail recursive and
relies on the Monad[F] to ensure stack safety.
Alias for this |> process1.scan(b)(f).
Alias for this |> process1.scan(b)(f).
Alias for this |> process1.scan1(f).
Alias for this |> process1.scan1(f).
Alias for this |> process1.scan1Map(f)(M).
Alias for this |> process1.scan1Map(f)(M).
Alias for this |> process1.scan1Monoid(M).
Alias for this |> process1.scan1Monoid(M).
Alias for this |> process1.scanMap(f)(M).
Alias for this |> process1.scanMap(f)(M).
Alias for this |> process1.scanMonoid(M).
Alias for this |> process1.scanMonoid(M).
Alias for this |> process1.scanSemigroup(M).
Alias for this |> process1.scanSemigroup(M).
Alias for this |> process1.shiftRight(head)
Alias for this |> process1.shiftRight(head)
Delay running this Process until awaken becomes true for the first time.
Delay running this Process until awaken becomes true for the first time.
Alias for this |> process1.sliding(n).
Alias for this |> process1.sliding(n).
Alias for this |> process1.split(f)
Alias for this |> process1.split(f)
Alias for this |> process1.splitOn(p)
Alias for this |> process1.splitOn(p)
Alias for this |> process1.splitWith(f)
Alias for this |> process1.splitWith(f)
Alias for this |> process1.stateScan(init)(f).
Alias for this |> process1.stateScan(init)(f).
Run one step of an incremental traversal of this Process.
Run one step of an incremental traversal of this Process.
This function is mostly intended for internal use. As it allows
a Process to be observed and captured during its execution,
users are responsible for ensuring resource safety.
Alias for this |> process1.sum
Alias for this |> process1.sum
p.suspendStep propagates exceptions to p.
For anly process terminating with Kill, this swallows the Kill and replaces it with End termination
Alias for this |> process1.tail.
Alias for this |> process1.tail.
Alias for this |> process1.take(n).
Alias for this |> process1.take(n).
Alias for this |> process1.takeRight(n).
Alias for this |> process1.takeRight(n).
Alias for this |> process1.takeThrough(f).
Alias for this |> process1.takeThrough(f).
Alias for this |> process1.takeWhile(f).
Alias for this |> process1.takeWhile(f).
Use a Tee to interleave or combine the outputs of this and
p2.
Use a Tee to interleave or combine the outputs of this and
p2. This can be used for zipping, interleaving, and so forth.
Nothing requires that the Tee read elements from each
Process in lockstep. It could read fifty elements from one
side, then two elements from the other, then combine or
interleave these values in some way, etc.
If at any point the Tee awaits on a side that has halted,
we gracefully kill off the other side, then halt.
If at any point t terminates with cause c, both sides are killed, and
the resulting Process terminates with c.
Alias for this |> process1.terminated.
Alias for this |> process1.terminated.
Feed this Writer's output through the provided effectful Channel.
Feed this Writer's output through the provided effectful Channel.
Feed this Writer's writes through the provided effectful Channel.
Feed this Writer's writes through the provided effectful Channel.
converts process to signal *
converts process to signal *
Translate the request type from F to G, using the given polymorphic function.
Remove any leading emitted values from this Process.
Remove any leading emitted values from this Process.
Removes all emitted elements from the front of this Process.
Removes all emitted elements from the front of this Process.
The second argument returned by this method is guaranteed to be
an Await, Halt or an Append-- if there are multiple Emit's at the
front of this process, the sequences are concatenated together.
If this Process does not begin with an Emit, returns the empty
sequence along with this.
Halts this Process as soon as condition becomes true.
Halts this Process as soon as condition becomes true. Note that condition
is checked before each and every read from this, so condition should return
very quickly or be continuous to avoid holding up the output Process. Use
condition.forwardFill to convert an infrequent discrete Process to a
continuous one for use with this function.
When condition is true, lets through any values in this process, otherwise blocks
until condition becomes true again.
When condition is true, lets through any values in this process, otherwise blocks
until condition becomes true again. Note that the condition is checked before
each and every read from this, so condition should return very quickly or be
continuous to avoid holding up the output Process. Use condition.forwardFill to
convert an infrequent discrete Process to a continuous one for use with this
function.
Like tee, but we allow the Wye to read non-deterministically
from both sides at once.
Like tee, but we allow the Wye to read non-deterministically
from both sides at once.
If y is in the state of awaiting Both, this implementation
will continue feeding y from either left or right side,
until either it halts or _both_ sides halt.
If y is in the state of awaiting L, and the left
input has halted, we halt. Likewise for the right side.
For as long as y permits it, this implementation will _always_
feed it any leading Emit elements from either side before issuing
new F requests. More sophisticated chunking and fairness
policies do not belong here, but should be built into the Wye
and/or its inputs.
The strategy passed in must be stack-safe, otherwise this implementation
will throw SOE. Preferably use one of the Strategys.Executor(es) based strategies
Non-deterministic version of zip.
Non-deterministic version of zip. Note this terminates whenever one of streams terminate
Non-deterministic version of zipWith.
Non-deterministic version of zipWith. Note this terminates whenever one of streams terminate
Call tee with the zip Tee[O,O2,O3] defined in tee.scala.
Call tee with the zip Tee[O,O2,O3] defined in tee.scala.
Call tee with the zipWith Tee[O,O2,O3] defined in tee.scala.
Call tee with the zipWith Tee[O,O2,O3] defined in tee.scala.
Alias for this |> process1.zipWithIndex[A,N]*.
Alias for this |> process1.zipWithIndex[A,N]*.
Alias for this |> process1.zipWithIndex[A]*.
Alias for this |> process1.zipWithIndex[A]*.
Alias for this |> process1.zipWithNext.
Alias for this |> process1.zipWithNext.
Alias for this |> process1.zipWithPrevious.
Alias for this |> process1.zipWithPrevious.
Alias for this |> process1.zipWithPreviousAndNext.
Alias for this |> process1.zipWithPreviousAndNext.
Alias for this |> process1.zipWithScan(z)(next).
Alias for this |> process1.zipWithScan(z)(next).
Alias for this |> process1.zipWithScan(z)(next).
Alias for this |> process1.zipWithScan(z)(next).
Alias for this |> process1.zipWithState(z)(next).
Alias for this |> process1.zipWithState(z)(next).
Operator alias for pipe.
(process: SourceSyntax[O]).self
(process: Process1Syntax[Any, O]).self
(process: WyeSyntax[Any, Any, O]).self
(process: WriterTaskSyntax[W, O]).self
(process: TeeSyntax[Any, Any, O]).self
(process: SinkTaskSyntax[Any]).self
An effectful stream of
Ovalues. In between emitting values aProcessmay request evaluation ofFeffects. AProcess[Nothing,A]is a pureProcesswith no effects. AProcess[Task,A]may haveTaskeffects. AProcesshalts due to someCause, generallyEnd(indicating normal termination) orError(t)for somet: Throwableindicating abnormal termination due to some uncaught error.