ZIO

Type Members

final class AccessPartiallyApplied[R] extends AnyVal
final class AccessZIOPartiallyApplied[R] extends AnyVal
final class BracketAcquire[-R, +E, +A] extends AnyVal
final class BracketAcquire_[-R, +E] extends AnyVal
final class BracketExitAcquire[-R, +E, +A] extends AnyVal
final class BracketExitRelease[-R, +E, E1, +A, B] extends AnyRef
final class BracketRelease[-R, +E, +A] extends AnyRef
final class BracketReleaseFn[R, E, A, B] extends ZIOFn2[A, Exit[E, B], URIO[R, Any]]
final class BracketRelease_[-R, +E] extends AnyRef
abstract class CanFilter[+E] extends AnyRef

Annotations
@implicitNotFound( ... )
final class ConstFn[A, B] extends ZIOFn1[A, B]
final class ConstZIOFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]
final class FoldCauseZIOFailureFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, A]]
final class FoldCauseZIOFailureTraceFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, A]]
final class ForkScopeRestore extends AnyVal
final class GetStateWithPartiallyApplied[S] extends AnyVal
final class Grafter extends AnyVal
final class IfZIO[R, E] extends AnyVal
final class InterruptStatusRestore extends AnyVal
final class MapErrorCauseFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, Nothing]]
final class MapErrorFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, Nothing]]
final class MapFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]
final class ProvideSomeLayer[R0, -R, +E, +A] extends AnyVal
final class ServiceWithPartiallyApplied[Service] extends AnyVal
final class SucceedFn[R, E, A] extends ZIOFn1[A, ZIO[R, E, A]]
final class TapCauseRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]
final class TapDefectRefailFn[R, E, E1 >: E] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]
final class TapErrorRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]
final class TapErrorTraceRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]
final class TapFn[R, E, A] extends ZIOFn1[A, ZIO[R, E, A]]
final class TimeoutTo[-R, +E, +A, +B] extends AnyRef
final class UnlessZIO[R, E] extends AnyVal
final class UpdateService[-R, +E, +A, M] extends AnyVal
final class WhenZIO[R, E] extends AnyVal
implicit final class ZIOAutoCloseableOps[R, E, A <: AutoCloseable] extends AnyVal
sealed trait ZIOConstructor[-Environment, +Error, In] extends AnyRef

A ZIOConstructor[Input] knows how to construct a ZIO value from an input of type Input.
A ZIOConstructor[Input] knows how to construct a ZIO value from an input of type Input. This allows the type of the ZIO value constructed to depend on Input. The constructed ZIO value is guaranteed not to require any services not included in Environment or to be able to fail in any ways not described by Error.
trait ZIOConstructorLowPriority1 extends ZIOConstructorLowPriority2
trait ZIOConstructorLowPriority2 extends ZIOConstructorLowPriority3
trait ZIOConstructorLowPriority3 extends AnyRef
implicit final class ZIOWithFilterOps[R, E, A] extends AnyVal
implicit final class ZioRefineToOrDieOps[R, E <: Throwable, A] extends AnyVal
final class ZipLeftFn[R, E, A, B] extends ZIOFn1[B, ZIO[R, E, B]]
final class ZipRightFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
object CanFilter
object InterruptStatusRestore
object ZIOConstructor extends ZIOConstructorLowPriority1
def absolve[R, E, A](v: ZIO[R, E, Either[E, A]]): ZIO[R, E, A]

Submerges the error case of an Either into the ZIO.
Submerges the error case of an Either into the ZIO. The inverse operation of IO.either.
def access[R]: AccessPartiallyApplied[R]

Accesses the environment of the effect.
Accesses the environment of the effect.
```
val portNumber = effect.access(_.config.portNumber)
```
def accessZIO[R]: AccessZIOPartiallyApplied[R]

Effectfully accesses the environment of the effect.
def acquireReleaseExitWith[R, E, A, B](acquire: ZIO[R, E, A], release: (A, Exit[E, B]) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

Uncurried version.
Uncurried version. Doesn't offer curried syntax and has worse type-inference characteristics, but guarantees no extra allocations of intermediate zio.ZIO.BracketExitAcquire and zio.ZIO.BracketExitRelease objects.
def acquireReleaseExitWith[R, E, A](acquire: ZIO[R, E, A]): BracketExitAcquire[R, E, A]

Acquires a resource, uses the resource, and then releases the resource.
Acquires a resource, uses the resource, and then releases the resource. Neither the acquisition nor the release will be interrupted, and the resource is guaranteed to be released, so long as the acquire effect succeeds. If use fails, then after release, the returned effect will fail with the same error.
def acquireReleaseWith[R, E, A, B](acquire: ZIO[R, E, A], release: (A) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

Uncurried version.
Uncurried version. Doesn't offer curried syntax and have worse type-inference characteristics, but guarantees no extra allocations of intermediate zio.ZIO.BracketAcquire and zio.ZIO.BracketRelease objects.
def acquireReleaseWith[R, E, A](acquire: ZIO[R, E, A]): BracketAcquire[R, E, A]

When this effect represents acquisition of a resource (for example, opening a file, launching a thread, etc.), acquireReleaseWith can be used to ensure the acquisition is not interrupted and the resource is always released.
When this effect represents acquisition of a resource (for example, opening a file, launching a thread, etc.), acquireReleaseWith can be used to ensure the acquisition is not interrupted and the resource is always released.
The function does two things:
1. Ensures this effect, which acquires the resource, will not be interrupted. Of course, acquisition may fail for internal reasons (an uncaught exception). 2. Ensures the release effect will not be interrupted, and will be executed so long as this effect successfully acquires the resource.
In between acquisition and release of the resource, the use effect is executed.
If the release effect fails, then the entire effect will fail even if the use effect succeeds. If this fail-fast behavior is not desired, errors produced by the release effect can be caught and ignored.
```
openFile("data.json").acquireReleaseWith(closeFile) { file =>
  for {
    header <- readHeader(file)
    ...
  } yield result
}
```
def allowInterrupt: UIO[Unit]

Makes an explicit check to see if the fiber has been interrupted, and if so, performs self-interruption
def apply[A](a: ⇒ A): Task[A]
final def asInstanceOf[T0]: T0

Definition Classes
Any
def async[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Any, blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

Imports an asynchronous side-effect into a pure ZIO value.
Imports an asynchronous side-effect into a pure ZIO value. See asyncMaybe for the more expressive variant of this function that can return a value synchronously.
The callback function ZIO[R, E, A] => Any must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.
def asyncInterrupt[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Either[Canceler[R], ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

Imports an asynchronous side-effect into a ZIO effect.
Imports an asynchronous side-effect into a ZIO effect. The side-effect has the option of returning the value synchronously, which is useful in cases where it cannot be determined if the effect is synchronous or asynchronous until the side-effect is actually executed. The effect also has the option of returning a canceler, which will be used by the runtime to cancel the asynchronous effect if the fiber executing the effect is interrupted.
If the register function returns a value synchronously, then the callback function ZIO[R, E, A] => Any must not be called. Otherwise the callback function must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.
def asyncMaybe[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Option[ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

Imports an asynchronous effect into a pure ZIO value, possibly returning the value synchronously.
Imports an asynchronous effect into a pure ZIO value, possibly returning the value synchronously.
If the register function returns a value synchronously, then the callback function ZIO[R, E, A] => Any must not be called. Otherwise the callback function must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.
def asyncWithCompletionHandler[T](op: (CompletionHandler[T, Any]) ⇒ Any): Task[T]

Definition Classes
ZIOCompanionPlatformSpecific
def asyncZIO[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ ZIO[R, E, Any]): ZIO[R, E, A]

Imports an asynchronous effect into a pure ZIO value.
Imports an asynchronous effect into a pure ZIO value. This formulation is necessary when the effect is itself expressed in terms of ZIO.
def attempt[A](effect: ⇒ A): Task[A]

Imports a synchronous side-effect into a pure ZIO value, translating any thrown exceptions into typed failed effects creating with ZIO.fail.
Imports a synchronous side-effect into a pure ZIO value, translating any thrown exceptions into typed failed effects creating with ZIO.fail.
```
def printLine(line: String): Task[Unit] = Task.attempt(println(line))
```
def attemptBlocking[A](effect: ⇒ A): Task[A]

Imports a synchronous effect that does blocking IO into a pure value.
def attemptBlockingCancelable[A](effect: ⇒ A)(cancel: UIO[Unit]): Task[A]

Imports a synchronous effect that does blocking IO into a pure value, with a custom cancel effect.
Imports a synchronous effect that does blocking IO into a pure value, with a custom cancel effect.
If the returned ZIO is interrupted, the blocked thread running the synchronous effect will be interrupted via the cancel effect.
def attemptBlockingIO[A](effect: ⇒ A): IO[IOException, A]

Imports a synchronous effect that does blocking IO into a pure value, refining the error type to java.io.IOException.
def attemptBlockingInterrupt[A](effect: ⇒ A): Task[A]

Imports a synchronous effect that does blocking IO into a pure value.
Imports a synchronous effect that does blocking IO into a pure value.
If the returned ZIO is interrupted, the blocked thread running the synchronous effect will be interrupted via Thread.interrupt.
Note that this adds significant overhead. For performance sensitive applications consider using attemptBlocking or attemptBlockingCancelable.
def blocking[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

Locks the specified effect to the blocking thread pool.
def blockingExecutor: UIO[Executor]

Retrieves the executor for all blocking tasks.
def checkInterruptible[R, E, A](f: (zio.InterruptStatus) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Checks the interrupt status, and produces the effect returned by the specified callback.
def checkTraced[R, E, A](f: (zio.TracingStatus) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Checks the ZIO Tracing status, and produces the effect returned by the specified callback.
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def collect[R, E, Key, Key2, Value, Value2](map: Map[Key, Value])(f: (Key, Value) ⇒ ZIO[R, Option[E], (Key2, Value2)]): ZIO[R, E, Map[Key2, Value2]]

Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases.
Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases. For a parallel version, see collectPar.
def collect[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, Option[E], B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases.
Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases. For a parallel version, see collectPar.
def collectAll[R, E, A](in: NonEmptyChunk[ZIO[R, E, A]]): ZIO[R, E, NonEmptyChunk[A]]

Evaluate each effect in the structure from left to right, and collect the results.
Evaluate each effect in the structure from left to right, and collect the results. For a parallel version, see collectAllPar.
def collectAll[R, E, A](in: Option[ZIO[R, E, A]]): ZIO[R, E, Option[A]]

Evaluate effect if present, and return its result as Option[A].
def collectAll[R, E, A](in: Array[ZIO[R, E, A]])(implicit arg0: ClassTag[A]): ZIO[R, E, Array[A]]

Evaluate each effect in the structure from left to right, and collect the results.
Evaluate each effect in the structure from left to right, and collect the results. For a parallel version, see collectAllPar.
def collectAll[R, E, A](in: Set[ZIO[R, E, A]]): ZIO[R, E, Set[A]]

Evaluate each effect in the structure from left to right, and collect the results.
Evaluate each effect in the structure from left to right, and collect the results. For a parallel version, see collectAllPar.
def collectAll[R, E, A, Collection[+Element] <: Iterable[Element]](in: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): ZIO[R, E, Collection[A]]

Evaluate each effect in the structure from left to right, and collect the results.
Evaluate each effect in the structure from left to right, and collect the results. For a parallel version, see collectAllPar.
def collectAllDiscard[R, E, A](in: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure from left to right, and discard the results.
Evaluate each effect in the structure from left to right, and discard the results. For a parallel version, see collectAllParDiscard.
def collectAllPar[R, E, A](as: NonEmptyChunk[ZIO[R, E, A]]): ZIO[R, E, NonEmptyChunk[A]]

Evaluate each effect in the structure in parallel, and collect the results.
Evaluate each effect in the structure in parallel, and collect the results. For a sequential version, see collectAll.
def collectAllPar[R, E, A](as: Array[ZIO[R, E, A]])(implicit arg0: ClassTag[A]): ZIO[R, E, Array[A]]

Evaluate each effect in the structure in parallel, and collect the results.
Evaluate each effect in the structure in parallel, and collect the results. For a sequential version, see collectAll.
def collectAllPar[R, E, A](as: Set[ZIO[R, E, A]]): ZIO[R, E, Set[A]]

Evaluate each effect in the structure in parallel, and collect the results.
Evaluate each effect in the structure in parallel, and collect the results. For a sequential version, see collectAll.
def collectAllPar[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): ZIO[R, E, Collection[A]]

Evaluate each effect in the structure in parallel, and collect the results.
Evaluate each effect in the structure in parallel, and collect the results. For a sequential version, see collectAll.
def collectAllParDiscard[R, E, A](as: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure in parallel, and discard the results.
Evaluate each effect in the structure in parallel, and discard the results. For a sequential version, see collectAllDiscard.
def collectAllParN[R, E, A, Collection[+Element] <: Iterable[Element]](n: Int)(as: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): ZIO[R, E, Collection[A]]

Evaluate each effect in the structure in parallel, and collect the results.
Evaluate each effect in the structure in parallel, and collect the results. For a sequential version, see collectAll.
Unlike collectAllPar, this method will use at most n fibers.
def collectAllParNDiscard[R, E, A](n: Int)(as: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure in parallel, and discard the results.
Evaluate each effect in the structure in parallel, and discard the results. For a sequential version, see collectAllDiscard.
Unlike collectAllParDiscard, this method will use at most n fibers.
def collectAllSuccesses[R, E, A, Collection[+Element] <: Iterable[Element]](in: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): URIO[R, Collection[A]]

Evaluate and run each effect in the structure and collect discarding failed ones.
def collectAllSuccessesPar[R, E, A, Collection[+Element] <: Iterable[Element]](in: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): URIO[R, Collection[A]]

Evaluate and run each effect in the structure in parallel, and collect discarding failed ones.
def collectAllSuccessesParN[R, E, A, Collection[+Element] <: Iterable[Element]](n: Int)(in: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): URIO[R, Collection[A]]

Evaluate and run each effect in the structure in parallel, and collect discarding failed ones.
Evaluate and run each effect in the structure in parallel, and collect discarding failed ones.
Unlike collectAllSuccessesPar, this method will use at most up to n fibers.
def collectAllWith[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[ZIO[R, E, A]])(f: PartialFunction[A, B])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], B, Collection[B]]): ZIO[R, E, Collection[B]]

Evaluate each effect in the structure with collectAll, and collect the results with given partial function.
def collectAllWithPar[R, E, A, U, Collection[+Element] <: Iterable[Element]](in: Collection[ZIO[R, E, A]])(f: PartialFunction[A, U])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], U, Collection[U]]): ZIO[R, E, Collection[U]]

Evaluate each effect in the structure with collectAllPar, and collect the results with given partial function.
def collectAllWithParN[R, E, A, B, Collection[+Element] <: Iterable[Element]](n: Int)(in: Collection[ZIO[R, E, A]])(f: PartialFunction[A, B])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], B, Collection[B]]): ZIO[R, E, Collection[B]]

Evaluate each effect in the structure with collectAllPar, and collect the results with given partial function.
Evaluate each effect in the structure with collectAllPar, and collect the results with given partial function.
Unlike collectAllWithPar, this method will use at most up to n fibers.
def collectFirst[R, E, A, B](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Option[B]]): ZIO[R, E, Option[B]]

Collects the first element of the Iterable[A] for which the effectual function f returns Some.
def collectPar[R, E, Key, Key2, Value, Value2](map: Map[Key, Value])(f: (Key, Value) ⇒ ZIO[R, Option[E], (Key2, Value2)]): ZIO[R, E, Map[Key2, Value2]]

Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases.
Evaluate each effect in the structure from left to right, collecting the the successful values and discarding the empty cases. For a parallel version, see collectPar.
def collectPar[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, Option[E], B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Evaluate each effect in the structure in parallel, collecting the the successful values and discarding the empty cases.
def collectParN[R, E, A, B, Collection[+Element] <: Iterable[Element]](n: Int)(in: Collection[A])(f: (A) ⇒ ZIO[R, Option[E], B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Evaluate each effect in the structure in parallel, collecting the the successful values and discarding the empty cases.
Evaluate each effect in the structure in parallel, collecting the the successful values and discarding the empty cases.
Unlike collectPar, this method will use at most up to n fibers.
def cond[E, A](predicate: Boolean, result: ⇒ A, error: ⇒ E): IO[E, A]

Similar to Either.cond, evaluate the predicate, return the given A as success if predicate returns true, and the given E as error otherwise
Similar to Either.cond, evaluate the predicate, return the given A as success if predicate returns true, and the given E as error otherwise
For effectful conditionals, see ZIO.ifZIO
def debug(value: ⇒ Any): UIO[Unit]

Prints the specified message to the console for debugging purposes.
def descriptor: UIO[Fiber.Descriptor]

Returns information about the current fiber, such as its identity.
def descriptorWith[R, E, A](f: (Fiber.Descriptor) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Constructs an effect based on information about the current fiber, such as its identity.
def die(t: ⇒ Throwable): UIO[Nothing]

Returns an effect that dies with the specified Throwable.
Returns an effect that dies with the specified Throwable. This method can be used for terminating a fiber because a defect has been detected in the code.
def dieMessage(message: ⇒ String): UIO[Nothing]

Returns an effect that dies with a java.lang.RuntimeException having the specified text message.
Returns an effect that dies with a java.lang.RuntimeException having the specified text message. This method can be used for terminating a fiber because a defect has been detected in the code.
def done[E, A](r: ⇒ Exit[E, A]): IO[E, A]

Returns an effect from a zio.Exit value.
def effectTotalWith[A](effect: (Platform, Id) ⇒ A): UIO[A]

The same as ZIO.effectTotal, but also provides access to the underlying Platform and fiber id.
def environment[R]: URIO[R, R]

Accesses the whole environment of the effect.
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def executor: UIO[Executor]

Retrieves the executor for this effect.
def exists[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Boolean]

Determines whether any element of the Iterable[A] satisfies the effectual predicate f.
def fail[E](error: ⇒ E): IO[E, Nothing]

Returns an effect that models failure with the specified error.
Returns an effect that models failure with the specified error. The moral equivalent of throw for pure code.
def failCause[E](cause: ⇒ Cause[E]): IO[E, Nothing]

Returns an effect that models failure with the specified Cause.
def failCauseWith[E](function: (() ⇒ ZTrace) ⇒ Cause[E]): IO[E, Nothing]

Returns an effect that models failure with the specified Cause.
Returns an effect that models failure with the specified Cause.
This version takes in a lazily-evaluated trace that can be attached to the Cause via Cause.Traced.
val fiberId: UIO[Id]

Returns the Fiber.Id of the fiber executing the effect that calls this method.
def filter[R, E, A](as: Set[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Set[A]]

Filters the Set[A] using the specified effectual predicate.
def filter[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[A])(f: (A) ⇒ ZIO[R, E, Boolean])(implicit bf: zio.BuildFrom[Collection[A], A, Collection[A]]): ZIO[R, E, Collection[A]]

Filters the collection using the specified effectual predicate.
def filterNot[R, E, A](as: Set[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Set[A]]

Filters the Set[A] using the specified effectual predicate, removing all elements that satisfy the predicate.
def filterNot[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[A])(f: (A) ⇒ ZIO[R, E, Boolean])(implicit bf: zio.BuildFrom[Collection[A], A, Collection[A]]): ZIO[R, E, Collection[A]]

Filters the collection using the specified effectual predicate, removing all elements that satisfy the predicate.
def filterNotPar[R, E, A](as: Set[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Set[A]]

Filters the Set[A] in parallel using the specified effectual predicate, removing all elements that satisfy the predicate.
Filters the Set[A] in parallel using the specified effectual predicate, removing all elements that satisfy the predicate.
See zio.ZIO.filterNot[R,E,A](as:Set* for a sequential version.
def filterNotPar[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[A])(f: (A) ⇒ ZIO[R, E, Boolean])(implicit bf: zio.BuildFrom[Collection[A], A, Collection[A]]): ZIO[R, E, Collection[A]]

Filters the collection in parallel using the specified effectual predicate, emoving all elements that satisfy the predicate.
Filters the collection in parallel using the specified effectual predicate, emoving all elements that satisfy the predicate.
See zio.ZIO.filterNot[R,E,A,Collection* for a sequential version.
def filterPar[R, E, A](as: Set[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Set[A]]

Filters the Set[A] in parallel using the specified effectual predicate.
Filters the Set[A] in parallel using the specified effectual predicate.
See zio.ZIO.filter[R,E,A,Collection* for a sequential version.
def filterPar[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[A])(f: (A) ⇒ ZIO[R, E, Boolean])(implicit bf: zio.BuildFrom[Collection[A], A, Collection[A]]): ZIO[R, E, Collection[A]]

Filters the collection in parallel using the specified effectual predicate.
Filters the collection in parallel using the specified effectual predicate.
See zio.ZIO.filter[R,E,A,Collection* for a sequential version.
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def firstSuccessOf[R, R1 <: R, E, A](zio: ZIO[R, E, A], rest: Iterable[ZIO[R1, E, A]]): ZIO[R1, E, A]

Returns an effect that runs the first effect and in case of failure, runs each of the specified effects in order until one of them succeeds.
def flatten[R, E, A](zio: ZIO[R, E, ZIO[R, E, A]]): ZIO[R, E, A]

Returns an effect that first executes the outer effect, and then executes the inner effect, returning the value from the inner effect, and effectively flattening a nested effect.
def foldLeft[R, E, S, A](in: Iterable[A])(zero: S)(f: (S, A) ⇒ ZIO[R, E, S]): ZIO[R, E, S]

Folds an Iterable[A] using an effectual function f, working sequentially from left to right.
def foldRight[R, E, S, A](in: Iterable[A])(zero: S)(f: (A, S) ⇒ ZIO[R, E, S]): ZIO[R, E, S]

Folds an Iterable[A] using an effectual function f, working sequentially from right to left.
def forall[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Boolean]): ZIO[R, E, Boolean]

Determines whether all elements of the Iterable[A] satisfy the effectual predicate f.
final def foreach[R, E, A, B](in: NonEmptyChunk[A])(f: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, NonEmptyChunk[B]]

Applies the function f to each element of the NonEmptyChunk[A] and returns the results in a new NonEmptyChunk[B].
Applies the function f to each element of the NonEmptyChunk[A] and returns the results in a new NonEmptyChunk[B].
For a parallel version of this method, see foreachPar. If you do not need the results, see foreachDiscard for a more efficient implementation.
final def foreach[R, E, A, B](in: Option[A])(f: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, Option[B]]

Applies the function f if the argument is non-empty and returns the results in a new Option[B].
def foreach[R, E, Key, Key2, Value, Value2](map: Map[Key, Value])(f: (Key, Value) ⇒ ZIO[R, E, (Key2, Value2)]): ZIO[R, E, Map[Key2, Value2]]

Applies the function f to each element of the Map[Key, Value] and returns the results in a new Map[Key2, Value2].
Applies the function f to each element of the Map[Key, Value] and returns the results in a new Map[Key2, Value2].
For a parallel version of this method, see foreachPar. If you do not need the results, see foreachDiscard for a more efficient implementation.
final def foreach[R, E, A, B](in: Array[A])(f: (A) ⇒ ZIO[R, E, B])(implicit arg0: ClassTag[B]): ZIO[R, E, Array[B]]

Applies the function f to each element of the Array[A] and returns the results in a new Array[B].
Applies the function f to each element of the Array[A] and returns the results in a new Array[B].
For a parallel version of this method, see foreachPar. If you do not need the results, see foreachDiscard for a more efficient implementation.
final def foreach[R, E, A, B](in: Set[A])(f: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, Set[B]]

Applies the function f to each element of the Set[A] and returns the results in a new Set[B].
Applies the function f to each element of the Set[A] and returns the results in a new Set[B].
For a parallel version of this method, see foreachPar. If you do not need the results, see foreachDiscard for a more efficient implementation.
def foreach[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Applies the function f to each element of the Collection[A] and returns the results in a new Collection[B].
Applies the function f to each element of the Collection[A] and returns the results in a new Collection[B].
For a parallel version of this method, see foreachPar. If you do not need the results, see foreach_ for a more efficient implementation.
def foreachDiscard[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects sequentially.
Applies the function f to each element of the Iterable[A] and runs produced effects sequentially.
Equivalent to foreach(as)(f).unit, but without the cost of building the list of results.
final def foreachExec[R, E, A, B, Collection[+Element] <: Iterable[Element]](as: Collection[A])(exec: ExecutionStrategy)(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Applies the function f to each element of the Collection[A] and returns the result in a new Collection[B] using the specified execution strategy.
final def foreachPar[R, E, A, B](as: NonEmptyChunk[A])(fn: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, NonEmptyChunk[B]]

Applies the function f to each element of the NonEmptyChunk[A] in parallel, and returns the results in a new NonEmptyChunk[B].
Applies the function f to each element of the NonEmptyChunk[A] in parallel, and returns the results in a new NonEmptyChunk[B].
For a sequential version of this method, see foreach.
def foreachPar[R, E, Key, Key2, Value, Value2](map: Map[Key, Value])(f: (Key, Value) ⇒ ZIO[R, E, (Key2, Value2)]): ZIO[R, E, Map[Key2, Value2]]

Applies the function f to each element of the Map[Key, Value] in parallel and returns the results in a new Map[Key2, Value2].
Applies the function f to each element of the Map[Key, Value] in parallel and returns the results in a new Map[Key2, Value2].
For a sequential version of this method, see foreach.
final def foreachPar[R, E, A, B](as: Array[A])(f: (A) ⇒ ZIO[R, E, B])(implicit arg0: ClassTag[B]): ZIO[R, E, Array[B]]

Applies the function f to each element of the Array[A] in parallel, and returns the results in a new Array[B].
Applies the function f to each element of the Array[A] in parallel, and returns the results in a new Array[B].
For a sequential version of this method, see foreach.
final def foreachPar[R, E, A, B](as: Set[A])(fn: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, Set[B]]

Applies the function f to each element of the Set[A] in parallel, and returns the results in a new Set[B].
Applies the function f to each element of the Set[A] in parallel, and returns the results in a new Set[B].
For a sequential version of this method, see foreach.
def foreachPar[R, E, A, B, Collection[+Element] <: Iterable[Element]](as: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Applies the function f to each element of the Collection[A] in parallel, and returns the results in a new Collection[B].
Applies the function f to each element of the Collection[A] in parallel, and returns the results in a new Collection[B].
For a sequential version of this method, see foreach.
def foreachParDiscard[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
For a sequential version of this method, see foreachDiscard.
Optimized to avoid keeping full tree of effects, so that method could be able to handle large input sequences. Behaves almost like this code:
```
as.foldLeft(ZIO.unit) { (acc, a) => acc.zipParLeft(f(a)) }
```
Additionally, interrupts all effects on any failure.
def foreachParN[R, E, A, B, Collection[+Element] <: Iterable[Element]](n: Int)(as: Collection[A])(fn: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]]): ZIO[R, E, Collection[B]]

Applies the function f to each element of the Collection[A] in parallel, and returns the results in a new Collection[B].
Applies the function f to each element of the Collection[A] in parallel, and returns the results in a new Collection[B].
Unlike foreachPar, this method will use at most up to n fibers.
def foreachParNDiscard[R, E, A](n: Int)(as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Unlike foreachParDiscard, this method will use at most up to n fibers.
def forkAll[R, E, A, Collection[+Element] <: Iterable[Element]](as: Collection[ZIO[R, E, A]])(implicit bf: zio.BuildFrom[Collection[ZIO[R, E, A]], A, Collection[A]]): URIO[R, Fiber[E, Collection[A]]]

Returns an effect that forks all of the specified values, and returns a composite fiber that produces a list of their results, in order.
def forkAllDiscard[R, E, A](as: Iterable[ZIO[R, E, A]]): URIO[R, Unit]

Returns an effect that forks all of the specified values, and returns a composite fiber that produces unit.
Returns an effect that forks all of the specified values, and returns a composite fiber that produces unit. This version is faster than forkAll in cases where the results of the forked fibers are not needed.
def forkScope: UIO[ZScope[Exit[Any, Any]]]

Retrieves the scope that will be used to supervise forked effects.
def forkScopeMask[R, E, A](newScope: ZScope[Exit[Any, Any]])(f: (ForkScopeRestore) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Captures the fork scope, before overriding it with the specified new scope, passing a function that allows restoring the fork scope to what it was originally.
def forkScopeWith[R, E, A](f: (ZScope[Exit[Any, Any]]) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Retrieves the scope that will be used to supervise forked effects.
def from[Input](input: ⇒ Input)(implicit constructor: ZIOConstructor[Nothing, Any, Input]): ZIO[OutEnvironment, OutError, OutSuccess]

Constructs a ZIO value of the appropriate type for the specified input.
def fromCompletableFuture[A](cs: ⇒ CompletableFuture[A]): Task[A]

Alias for formCompletionStage for a concrete implementation of CompletionStage
Alias for formCompletionStage for a concrete implementation of CompletionStage

Definition Classes
ZIOCompanionPlatformSpecific
def fromCompletionStage[A](cs: ⇒ CompletionStage[A]): Task[A]

Definition Classes
ZIOCompanionPlatformSpecific
def fromEither[E, A](v: ⇒ Either[E, A]): IO[E, A]

Lifts an Either into a ZIO value.
def fromEitherCause[E, A](v: ⇒ Either[Cause[E], A]): IO[E, A]

Lifts an Either into a ZIO value.
def fromFiber[E, A](fiber: ⇒ Fiber[E, A]): IO[E, A]

Creates a ZIO value that represents the exit value of the specified fiber.
def fromFiberZIO[R, E, A](fiber: ZIO[R, E, Fiber[E, A]]): ZIO[R, E, A]

Creates a ZIO value that represents the exit value of the specified fiber.
def fromFuture[A](make: (ExecutionContext) ⇒ Future[A]): Task[A]

Imports a function that creates a scala.concurrent.Future from an scala.concurrent.ExecutionContext into a ZIO.
def fromFutureInterrupt[A](make: (ExecutionContext) ⇒ Future[A]): Task[A]

Imports a function that creates a scala.concurrent.Future from an scala.concurrent.ExecutionContext into a ZIO.
Imports a function that creates a scala.concurrent.Future from an scala.concurrent.ExecutionContext into a ZIO. The provided ExecutionContext will interrupt the Future between asynchronous operations such as map and flatMap if this effect is interrupted. Note that no attempt will be made to interrupt a Future blocking on a synchronous operation and that the Future must be created using the provided ExecutionContext.
def fromFutureJava[A](future: ⇒ Future[A]): Task[A]

WARNING: this uses the blocking Future#get, consider using fromCompletionStage
WARNING: this uses the blocking Future#get, consider using fromCompletionStage

Definition Classes
ZIOCompanionPlatformSpecific
def fromOption[A](v: ⇒ Option[A]): IO[Option[Nothing], A]

Lifts an Option into a ZIO but preserves the error as an option in the error channel, making it easier to compose in some scenarios.
def fromPromiseScala[A](promise: scala.concurrent.Promise[A]): Task[A]

Imports a scala.concurrent.Promise we generate a future from promise, and we pass to [fromFuture] to transform into Task[A]
def fromTry[A](value: ⇒ Try[A]): Task[A]

Lifts a Try into a ZIO.
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
final def getOrFail[A](v: ⇒ Option[A]): Task[A]

Lifts an Option into a ZIO, if the option is not defined it fails with NoSuchElementException.
final def getOrFailUnit[A](v: ⇒ Option[A]): IO[Unit, A]

Lifts an Option into a IO, if the option is not defined it fails with Unit.
final def getOrFailWith[E, A](e: ⇒ E)(v: ⇒ Option[A]): IO[E, A]

Lifts an Option into a ZIO.
Lifts an Option into a ZIO. If the option is not defined, fail with the e value.
def getState[S](implicit arg0: zio.Tag[S]): ZIO[Has[ZState[S]], Nothing, S]

Gets a state from the environment.
def getStateWith[S]: GetStateWithPartiallyApplied[S]

Gets a state from the environment and uses it to run the specified function.
def hashCode(): Int

Definition Classes
AnyRef → Any
def ifZIO[R, E](b: ZIO[R, E, Boolean]): IfZIO[R, E]

Runs onTrue if the result of b is true and onFalse otherwise.
val infinity: URIO[Has[Clock], Nothing]

Like never, but fibers that running this effect won't be garbage collected unless interrupted.
lazy val interrupt: UIO[Nothing]

Returns an effect that is interrupted as if by the fiber calling this method.
def interruptAs(fiberId: ⇒ Id): UIO[Nothing]

Returns an effect that is interrupted as if by the specified fiber.
def interruptible[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

Prefix form of ZIO#interruptible.
def interruptibleMask[R, E, A](k: (InterruptStatusRestore) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Makes the effect interruptible, but passes it a restore function that can be used to restore the inherited interruptibility from whatever region the effect is composed into.
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def iterate[R, E, S](initial: S)(cont: (S) ⇒ Boolean)(body: (S) ⇒ ZIO[R, E, S]): ZIO[R, E, S]

Iterates with the specified effectual function.
Iterates with the specified effectual function. The moral equivalent of:
```
var s = initial

while (cont(s)) {
  s = body(s)
}

s
```
def left[A](a: ⇒ A): UIO[Either[A, Nothing]]

Returns an effect with the value on the left part.
def lock[R, E, A](executor: ⇒ Executor)(zio: ZIO[R, E, A]): ZIO[R, E, A]

Returns an effect that will execute the specified effect fully on the provided executor, before returning to the default executor.
Returns an effect that will execute the specified effect fully on the provided executor, before returning to the default executor. See ZIO!.lock.
def loop[R, E, A, S](initial: S)(cont: (S) ⇒ Boolean, inc: (S) ⇒ S)(body: (S) ⇒ ZIO[R, E, A]): ZIO[R, E, List[A]]

Loops with the specified effectual function, collecting the results into a list.
Loops with the specified effectual function, collecting the results into a list. The moral equivalent of:
```
var s  = initial
var as = List.empty[A]

while (cont(s)) {
  as = body(s) :: as
  s  = inc(s)
}

as.reverse
```
def loopDiscard[R, E, S](initial: S)(cont: (S) ⇒ Boolean, inc: (S) ⇒ S)(body: (S) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Loops with the specified effectual function purely for its effects.
Loops with the specified effectual function purely for its effects. The moral equivalent of:
```
var s = initial

while (cont(s)) {
  body(s)
  s = inc(s)
}
```
def memoize[R, E, A, B](f: (A) ⇒ ZIO[R, E, B]): UIO[(A) ⇒ ZIO[R, E, B]]

Returns a memoized version of the specified effectual function.
def mergeAll[R, E, A, B](in: Iterable[ZIO[R, E, A]])(zero: B)(f: (B, A) ⇒ B): ZIO[R, E, B]

Merges an Iterable[IO] to a single IO, working sequentially.
def mergeAllPar[R, E, A, B](in: Iterable[ZIO[R, E, A]])(zero: B)(f: (B, A) ⇒ B): ZIO[R, E, B]

Merges an Iterable[IO] to a single IO, working in parallel.
Merges an Iterable[IO] to a single IO, working in parallel.
Due to the parallel nature of this combinator, f must be both: - commutative: f(a, b) == f(b, a) - associative: f(a, f(b, c)) == f(f(a, b), c)
It's unsafe to execute side effects inside f, as f may be executed more than once for some of in elements during effect execution.
def mergeAllParN[R, E, A, B](n: Int)(in: Iterable[ZIO[R, E, A]])(zero: B)(f: (B, A) ⇒ B): ZIO[R, E, B]

Merges an Iterable[IO] to a single IO, working in with up to n fibers in parallel.
Merges an Iterable[IO] to a single IO, working in with up to n fibers in parallel.
Due to the parallel nature of this combinator, f must be both: - commutative: f(a, b) == f(b, a) - associative: f(a, f(b, c)) == f(f(a, b), c)
It's unsafe to execute side effects inside f, as f may be executed more than once for some of in elements during effect execution.
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
lazy val never: UIO[Nothing]

Returns a effect that will never produce anything.
Returns a effect that will never produce anything. The moral equivalent of while(true) {}, only without the wasted CPU cycles. Fibers that suspended running this effect are automatically garbage collected on the JVM, because they cannot be reactivated.
lazy val none: UIO[Option[Nothing]]

Returns an effect with the empty value.
def noneOrFail[E](o: Option[E]): IO[E, Unit]

Lifts an Option into a IO.
Lifts an Option into a IO. If the option is empty it succeeds with Unit. If the option is defined it fails with the content.
def noneOrFailWith[E, O](o: Option[O])(f: (O) ⇒ E): IO[E, Unit]

Lifts an Option into a IO.
Lifts an Option into a IO. If the option is empty it succeeds with Unit. If the option is defined it fails with an error adapted with f.
def not[R, E](effect: ZIO[R, E, Boolean]): ZIO[R, E, Boolean]

Returns a new effect where boolean value of this effect is negated.
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def partition[R, E, A, B](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, B])(implicit ev: CanFail[E]): ZIO[R, Nothing, (Iterable[E], Iterable[B])]

Feeds elements of type A to a function f that returns an effect.
Feeds elements of type A to a function f that returns an effect. Collects all successes and failures in a tupled fashion.
def partitionPar[R, E, A, B](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, B])(implicit ev: CanFail[E]): ZIO[R, Nothing, (Iterable[E], Iterable[B])]

Feeds elements of type A to a function f that returns an effect.
Feeds elements of type A to a function f that returns an effect. Collects all successes and failures in parallel and returns the result as a tuple.
def partitionParN[R, E, A, B](n: Int)(in: Iterable[A])(f: (A) ⇒ ZIO[R, E, B])(implicit ev: CanFail[E]): ZIO[R, Nothing, (Iterable[E], Iterable[B])]

Feeds elements of type A to a function f that returns an effect.
Feeds elements of type A to a function f that returns an effect. Collects all successes and failures in parallel and returns the result as a tuple.
Unlike partitionPar, this method will use at most up to n fibers.
def provide[R, E, A](r: ⇒ R): (ZIO[R, E, A]) ⇒ IO[E, A]

Given an environment R, returns a function that can supply the environment to programs that require it, removing their need for any specific environment.
Given an environment R, returns a function that can supply the environment to programs that require it, removing their need for any specific environment.
This is similar to dependency injection, and the provide function can be thought of as inject.
def raceAll[R, R1 <: R, E, A](zio: ZIO[R, E, A], ios: Iterable[ZIO[R1, E, A]]): ZIO[R1, E, A]

Races an IO[E, A] against zero or more other effects.
Races an IO[E, A] against zero or more other effects. Yields either the first success or the last failure.
def reduceAll[R, R1 <: R, E, A](a: ZIO[R, E, A], as: Iterable[ZIO[R1, E, A]])(f: (A, A) ⇒ A): ZIO[R1, E, A]

Reduces an Iterable[IO] to a single IO, working sequentially.
def reduceAllPar[R, R1 <: R, E, A](a: ZIO[R, E, A], as: Iterable[ZIO[R1, E, A]])(f: (A, A) ⇒ A): ZIO[R1, E, A]

Reduces an Iterable[IO] to a single IO, working in parallel.
def reduceAllParN[R, R1 <: R, E, A](n: Int)(a: ZIO[R, E, A], as: Iterable[ZIO[R1, E, A]])(f: (A, A) ⇒ A): ZIO[R1, E, A]

Reduces an Iterable[IO] to a single IO, working in up to n fibers in parallel.
def replicate[R, E, A](n: Int)(effect: ZIO[R, E, A]): Iterable[ZIO[R, E, A]]

Replicates the given effect n times.
Replicates the given effect n times. If 0 or negative numbers are given, an empty Iterable will be returned. This method is more efficient than using List.fill or similar methods, because the returned Iterable consumes only a small amount of heap regardless of n.
def replicateZIO[R, E, A](n: Int)(effect: ZIO[R, E, A]): ZIO[R, E, Iterable[A]]

Performs this effect the specified number of times and collects the results.
def replicateZIODiscard[R, E, A](n: Int)(effect: ZIO[R, E, A]): ZIO[R, E, Unit]

Performs this effect the specified number of times, discarding the results.
def reserve[R, E, A, B](reservation: ZIO[R, E, Reservation[R, E, A]])(use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

Acquires a resource, uses the resource, and then releases the resource.
Acquires a resource, uses the resource, and then releases the resource. However, unlike acquireReleaseWith, the separation of these phases allows the acquisition to be interruptible.
Useful for concurrent data structures and other cases where the 'deallocator' can tell if the allocation succeeded or not just by inspecting internal / external state.
def right[B](b: ⇒ B): UIO[Either[Nothing, B]]

Returns an effect with the value on the right part.
def runtime[R]: URIO[R, Runtime[R]]

Returns an effect that accesses the runtime, which can be used to (unsafely) execute tasks.
Returns an effect that accesses the runtime, which can be used to (unsafely) execute tasks. This is useful for integration with legacy code that must call back into ZIO code.
def scopeWith[R, E, A](f: (ZScope[Exit[Any, Any]]) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Passes the fiber's scope to the specified function, which creates an effect that will be returned from this method.
def service[A](implicit arg0: zio.Tag[A]): URIO[Has[A], A]

Accesses the specified service in the environment of the effect.
def serviceWith[Service]: ServiceWithPartiallyApplied[Service]

Effectfully accesses the specified service in the environment of the effect.
Effectfully accesses the specified service in the environment of the effect.
Especially useful for creating "accessor" methods on Services' companion objects.
```
def foo(int: Int) = ZIO.serviceWith[Foo](_.foo(int))
```
def setState[S](s: S)(implicit arg0: zio.Tag[S]): ZIO[Has[ZState[S]], Nothing, Unit]

Sets a state in the environment to the specified value.
def shift(executor: Executor): UIO[Unit]

Returns an effect that shifts execution to the specified executor.
Returns an effect that shifts execution to the specified executor. This is useful to specify a default executor that effects sequenced after this one will be run on if they are not shifted somewhere else. It can also be used to implement higher level operators to manage where an effect is run such as ZIO!.lock and ZIO!.on.
def sleep(duration: ⇒ zio.Duration): URIO[Has[Clock], Unit]

Returns an effect that suspends for the specified duration.
Returns an effect that suspends for the specified duration. This method is asynchronous, and does not actually block the fiber executing the effect.
def some[A](a: ⇒ A): UIO[Option[A]]

Returns an effect with the optional value.
def succeed[A](a: ⇒ A): UIO[A]

Returns an effect that models success with the specified value.
def succeedBlocking[A](a: ⇒ A): UIO[A]

Returns a synchronous effect that does blocking and succeeds with the specified value.
def suspend[R, A](rio: ⇒ RIO[R, A]): RIO[R, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effect(io)).
def suspendSucceed[R, E, A](zio: ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. The effect must not throw any exceptions. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(succeed(zio)). If you wonder if the effect throws exceptions, do not use this method, use Task.suspend or ZIO.suspend.
def suspendSucceedWith[R, E, A](f: (Platform, Id) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. The effect must not throw any exceptions. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(succeed(zio)). If you wonder if the effect throws exceptions, do not use this method, use Task.suspend or ZIO.suspend.
def suspendWith[R, A](f: (Platform, Id) ⇒ RIO[R, A]): RIO[R, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effect(io)).
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
def trace: UIO[ZTrace]

Capture ZIO trace at the current point
def traced[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

Prefix form of ZIO#traced.
def transplant[R, E, A](f: (Grafter) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Transplants specified effects so that when those effects fork other effects, the forked effects will be governed by the scope of the fiber that executes this effect.
Transplants specified effects so that when those effects fork other effects, the forked effects will be governed by the scope of the fiber that executes this effect.
This can be used to "graft" deep grandchildren onto a higher-level scope, effectively extending their lifespans into the parent scope.
def uninterruptible[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

Prefix form of ZIO#uninterruptible.
def uninterruptibleMask[R, E, A](k: (InterruptStatusRestore) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Makes the effect uninterruptible, but passes it a restore function that can be used to restore the inherited interruptibility from whatever region the effect is composed into.
lazy val unit: UIO[Unit]

An effect that succeeds with a unit value.
def unless[R, E](b: ⇒ Boolean)(zio: ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

The moral equivalent of if (!p) exp
def unlessZIO[R, E](b: ZIO[R, E, Boolean]): UnlessZIO[R, E]

The moral equivalent of if (!p) exp when p has side-effects
def unsandbox[R, E, A](v: ZIO[R, Cause[E], A]): ZIO[R, E, A]

The inverse operation IO.sandboxed
The inverse operation IO.sandboxed
Terminates with exceptions on the Left side of the Either error, if it exists. Otherwise extracts the contained IO[E, A]
def unshift: UIO[Unit]

Returns an effect indicating that execution is no longer required to be performed on the current executor.
Returns an effect indicating that execution is no longer required to be performed on the current executor. The runtime may continue executing on this executor for efficiency but will not automatically shift back to it after completing an effect on another executor.
def untraced[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

Prefix form of ZIO#untraced.
def updateState[S](f: (S) ⇒ S)(implicit arg0: zio.Tag[S]): ZIO[Has[ZState[S]], Nothing, Unit]

Updates a state in the environment with the specified function.
def validate[R, E, A, B](in: NonEmptyChunk[A])(f: (A) ⇒ ZIO[R, E, B])(implicit ev: CanFail[E]): ZIO[R, ::[E], NonEmptyChunk[B]]

Feeds elements of type A to f and accumulates all errors in error channel or successes in success channel.
Feeds elements of type A to f and accumulates all errors in error channel or successes in success channel.
This combinator is lossy meaning that if there are errors all successes will be lost. To retain all information please use partition.
def validate[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]], ev: CanFail[E]): ZIO[R, ::[E], Collection[B]]

Feeds elements of type A to f and accumulates all errors in error channel or successes in success channel.
Feeds elements of type A to f and accumulates all errors in error channel or successes in success channel.
This combinator is lossy meaning that if there are errors all successes will be lost. To retain all information please use partition.
def validateDiscard[R, E, A](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any])(implicit ev: CanFail[E]): ZIO[R, ::[E], Unit]

Feeds elements of type A to f and accumulates all errors, discarding the successes.
def validateFirst[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], E, Collection[E]], ev: CanFail[E]): ZIO[R, Collection[E], B]

Feeds elements of type A to f until it succeeds.
Feeds elements of type A to f until it succeeds. Returns first success or the accumulation of all errors.
def validateFirstPar[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], E, Collection[E]], ev: CanFail[E]): ZIO[R, Collection[E], B]

Feeds elements of type A to f, in parallel, until it succeeds.
Feeds elements of type A to f, in parallel, until it succeeds. Returns first success or the accumulation of all errors.
In case of success all other running fibers are terminated.
def validatePar[R, E, A, B](in: NonEmptyChunk[A])(f: (A) ⇒ ZIO[R, E, B])(implicit ev: CanFail[E]): ZIO[R, ::[E], NonEmptyChunk[B]]

Feeds elements of type A to f and accumulates, in parallel, all errors in error channel or successes in success channel.
Feeds elements of type A to f and accumulates, in parallel, all errors in error channel or successes in success channel.
This combinator is lossy meaning that if there are errors all successes will be lost. To retain all information please use partitionPar.
def validatePar[R, E, A, B, Collection[+Element] <: Iterable[Element]](in: Collection[A])(f: (A) ⇒ ZIO[R, E, B])(implicit bf: zio.BuildFrom[Collection[A], B, Collection[B]], ev: CanFail[E]): ZIO[R, ::[E], Collection[B]]

Feeds elements of type A to f and accumulates, in parallel, all errors in error channel or successes in success channel.
Feeds elements of type A to f and accumulates, in parallel, all errors in error channel or successes in success channel.
This combinator is lossy meaning that if there are errors all successes will be lost. To retain all information please use partitionPar.
def validateParDiscard[R, E, A](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any])(implicit ev: CanFail[E]): ZIO[R, ::[E], Unit]

Feeds elements of type A to f in parallel and accumulates all errors, discarding the successes.
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
def when[R, E](b: ⇒ Boolean)(zio: ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

The moral equivalent of if (p) exp
def whenCase[R, E, A](a: ⇒ A)(pf: PartialFunction[A, ZIO[R, E, Any]]): ZIO[R, E, Unit]

Runs an effect when the supplied PartialFunction matches for the given value, otherwise does nothing.
def whenCaseZIO[R, E, A](a: ZIO[R, E, A])(pf: PartialFunction[A, ZIO[R, E, Any]]): ZIO[R, E, Unit]

Runs an effect when the supplied PartialFunction matches for the given effectful value, otherwise does nothing.
def whenZIO[R, E](b: ZIO[R, E, Boolean]): WhenZIO[R, E]

The moral equivalent of if (p) exp when p has side-effects
def withChildren[R, E, A](get: (UIO[Chunk[Fiber.Runtime[Any, Any]]]) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Locally installs a supervisor and an effect that succeeds with all the children that have been forked in the returned effect.
lazy val yieldNow: UIO[Unit]

Returns an effect that yields to the runtime system, starting on a fresh stack.
Returns an effect that yields to the runtime system, starting on a fresh stack. Manual use of this method can improve fairness, at the cost of overhead.

Deprecated Value Members

def accessM[R]: AccessZIOPartiallyApplied[R]

Effectfully accesses the environment of the effect.
Effectfully accesses the environment of the effect.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use accessZIO
def bracket[R, E, A, B](acquire: ZIO[R, E, A], release: (A) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

Uncurried version.
Uncurried version. Doesn't offer curried syntax and have worse type-inference characteristics, but guarantees no extra allocations of intermediate zio.ZIO.BracketAcquire and zio.ZIO.BracketRelease objects.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use acquireReleaseWith
def bracket[R, E, A](acquire: ZIO[R, E, A]): BracketAcquire[R, E, A]

When this effect represents acquisition of a resource (for example, opening a file, launching a thread, etc.), bracket can be used to ensure the acquisition is not interrupted and the resource is always released.
When this effect represents acquisition of a resource (for example, opening a file, launching a thread, etc.), bracket can be used to ensure the acquisition is not interrupted and the resource is always released.
The function does two things:
1. Ensures this effect, which acquires the resource, will not be interrupted. Of course, acquisition may fail for internal reasons (an uncaught exception). 2. Ensures the release effect will not be interrupted, and will be executed so long as this effect successfully acquires the resource.
In between acquisition and release of the resource, the use effect is executed.
If the release effect fails, then the entire effect will fail even if the use effect succeeds. If this fail-fast behavior is not desired, errors produced by the release effect can be caught and ignored.
```
openFile("data.json").bracket(closeFile) { file =>
  for {
    header <- readHeader(file)
    ...
  } yield result
}
```
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use acquireReleaseWith
def bracketExit[R, E, A, B](acquire: ZIO[R, E, A], release: (A, Exit[E, B]) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

Uncurried version.
Uncurried version. Doesn't offer curried syntax and has worse type-inference characteristics, but guarantees no extra allocations of intermediate zio.ZIO.BracketExitAcquire and zio.ZIO.BracketExitRelease objects.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use acquireReleaseExitWith
def bracketExit[R, E, A](acquire: ZIO[R, E, A]): BracketExitAcquire[R, E, A]

Acquires a resource, uses the resource, and then releases the resource.
Acquires a resource, uses the resource, and then releases the resource. Neither the acquisition nor the release will be interrupted, and the resource is guaranteed to be released, so long as the acquire effect succeeds. If use fails, then after release, the returned effect will fail with the same error.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use acquireReleaseExitWith
def collectAllParN_[R, E, A](n: Int)(as: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure in parallel, and discard the results.
Evaluate each effect in the structure in parallel, and discard the results. For a sequential version, see collectAll_.
Unlike collectAllPar_, this method will use at most n fibers.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use collectAllParNDiscard
def collectAllPar_[R, E, A](as: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure in parallel, and discard the results.
Evaluate each effect in the structure in parallel, and discard the results. For a sequential version, see collectAll_.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use collectAllParDiscard
def collectAll_[R, E, A](in: Iterable[ZIO[R, E, A]]): ZIO[R, E, Unit]

Evaluate each effect in the structure from left to right, and discard the results.
Evaluate each effect in the structure from left to right, and discard the results. For a parallel version, see collectAllPar_.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use collectAllDiscard
def effect[A](effect: ⇒ A): Task[A]

Imports a synchronous side-effect into a pure ZIO value, translating any thrown exceptions into typed failed effects creating with ZIO.fail.
Imports a synchronous side-effect into a pure ZIO value, translating any thrown exceptions into typed failed effects creating with ZIO.fail.
```
def printLine(line: String): Task[Unit] = Task.effect(println(line))
```
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use attempt
def effectAsync[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Any, blockingOn: Id = null): ZIO[R, E, A]

Imports an asynchronous side-effect into a pure ZIO value.
Imports an asynchronous side-effect into a pure ZIO value. See effectAsyncMaybe for the more expressive variant of this function that can return a value synchronously.
The callback function ZIO[R, E, A] => Any must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use async
def effectAsyncInterrupt[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Either[Canceler[R], ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

Imports an asynchronous side-effect into a ZIO effect.
Imports an asynchronous side-effect into a ZIO effect. The side-effect has the option of returning the value synchronously, which is useful in cases where it cannot be determined if the effect is synchronous or asynchronous until the side-effect is actually executed. The effect also has the option of returning a canceler, which will be used by the runtime to cancel the asynchronous effect if the fiber executing the effect is interrupted.
If the register function returns a value synchronously, then the callback function ZIO[R, E, A] => Any must not be called. Otherwise the callback function must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use asyncInterrupt
def effectAsyncM[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ ZIO[R, E, Any]): ZIO[R, E, A]

Imports an asynchronous effect into a pure ZIO value.
Imports an asynchronous effect into a pure ZIO value. This formulation is necessary when the effect is itself expressed in terms of ZIO.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use asyncZIO
def effectAsyncMaybe[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Option[ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

Imports an asynchronous effect into a pure ZIO value, possibly returning the value synchronously.
Imports an asynchronous effect into a pure ZIO value, possibly returning the value synchronously.
If the register function returns a value synchronously, then the callback function ZIO[R, E, A] => Any must not be called. Otherwise the callback function must be called at most once.
The list of fibers, that may complete the async callback, is used to provide better diagnostics.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use asyncMaybe
def effectAsyncWithCompletionHandler[T](op: (CompletionHandler[T, Any]) ⇒ Any): Task[T]

Definition Classes
ZIOCompanionPlatformSpecific
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use asyncWithCompletionHandler
def effectBlocking[A](effect: ⇒ A): Task[A]

Imports a synchronous effect that does blocking IO into a pure value.
Imports a synchronous effect that does blocking IO into a pure value.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use attemptBlocking
def effectBlockingCancelable[A](effect: ⇒ A)(cancel: UIO[Unit]): Task[A]

Imports a synchronous effect that does blocking IO into a pure value, with a custom cancel effect.
Imports a synchronous effect that does blocking IO into a pure value, with a custom cancel effect.
If the returned ZIO is interrupted, the blocked thread running the synchronous effect will be interrupted via the cancel effect.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use attemptBlockingCancelable
def effectBlockingIO[A](effect: ⇒ A): IO[IOException, A]

Imports a synchronous effect that does blocking IO into a pure value, refining the error type to java.io.IOException.
Imports a synchronous effect that does blocking IO into a pure value, refining the error type to java.io.IOException.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use attemptBlockingIO
def effectBlockingInterrupt[A](effect: ⇒ A): Task[A]

Imports a synchronous effect that does blocking IO into a pure value.
Imports a synchronous effect that does blocking IO into a pure value.
If the returned ZIO is interrupted, the blocked thread running the synchronous effect will be interrupted via Thread.interrupt.
Note that this adds significant overhead. For performance sensitive applications consider using effectBlocking or effectBlockingCancel.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use attemptBlockingInterrupt
def effectSuspend[R, A](rio: ⇒ RIO[R, A]): RIO[R, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effect(io)).

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use suspend
def effectSuspendTotal[R, E, A](zio: ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. The effect must not throw any exceptions. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effectTotal(zio)). If you wonder if the effect throws exceptions, do not use this method, use Task.effectSuspend or ZIO.effectSuspend.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use suspendSucceed
def effectSuspendTotalWith[R, E, A](f: (Platform, Id) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. The effect must not throw any exceptions. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effectTotal(zio)). If you wonder if the effect throws exceptions, do not use this method, use Task.effectSuspend or ZIO.effectSuspend.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use suspendSucceedWith
def effectSuspendWith[R, A](f: (Platform, Id) ⇒ RIO[R, A]): RIO[R, A]

Returns a lazily constructed effect, whose construction may itself require effects.
Returns a lazily constructed effect, whose construction may itself require effects. When no environment is required (i.e., when R == Any) it is conceptually equivalent to flatten(effect(io)).

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use suspendWith
def effectTotal[A](effect: ⇒ A): UIO[A]

Captures a synchronous computation into a lazy effect, which can be executed later and repeatedly.
Captures a synchronous computation into a lazy effect, which can be executed later and repeatedly. The synchronous computation must not throw any exceptions. If you are unsure, then don't use this method, use Task.effect, IO.effect, or ZIO.effect.
```
val nanoTime: UIO[Long] = IO.succeed(System.nanoTime())
```
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use succeed
def foreachParN_[R, E, A](n: Int)(as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Unlike foreachPar_, this method will use at most up to n fibers.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use foreachParNDiscard
def foreachPar_[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
Applies the function f to each element of the Iterable[A] and runs produced effects in parallel, discarding the results.
For a sequential version of this method, see foreach_.
Optimized to avoid keeping full tree of effects, so that method could be able to handle large input sequences. Behaves almost like this code:
```
as.foldLeft(ZIO.unit) { (acc, a) => acc.zipParLeft(f(a)) }
```
Additionally, interrupts all effects on any failure.
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use foreachParDiscard
def foreach_[R, E, A](as: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Applies the function f to each element of the Iterable[A] and runs produced effects sequentially.
Applies the function f to each element of the Iterable[A] and runs produced effects sequentially.
Equivalent to foreach(as)(f).unit, but without the cost of building the list of results.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use foreachDiscard
def forkAll_[R, E, A](as: Iterable[ZIO[R, E, A]]): URIO[R, Unit]

Returns an effect that forks all of the specified values, and returns a composite fiber that produces unit.
Returns an effect that forks all of the specified values, and returns a composite fiber that produces unit. This version is faster than forkAll in cases where the results of the forked fibers are not needed.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use forkAllDiscard
def fromFiberM[E, A](fiber: IO[E, Fiber[E, A]]): IO[E, A]

Creates a ZIO value that represents the exit value of the specified fiber.
Creates a ZIO value that represents the exit value of the specified fiber.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use fromFiberZIO
def fromFunction[R, A](f: (R) ⇒ A): URIO[R, A]

Lifts a function R => A into a URIO[R, A].
Lifts a function R => A into a URIO[R, A].

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use access
def fromFunctionM[R, E, A](f: (R) ⇒ IO[E, A]): ZIO[R, E, A]

Lifts an effectful function whose effect requires no environment into an effect that requires the input to the function.
Lifts an effectful function whose effect requires no environment into an effect that requires the input to the function.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use accessZIO
def halt[E](cause: ⇒ Cause[E]): IO[E, Nothing]

Returns an effect that models failure with the specified Cause.
Returns an effect that models failure with the specified Cause.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use failCause
def haltWith[E](function: (() ⇒ ZTrace) ⇒ Cause[E]): IO[E, Nothing]

Returns an effect that models failure with the specified Cause.
Returns an effect that models failure with the specified Cause.
This version takes in a lazily-evaluated trace that can be attached to the Cause via Cause.Traced.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use failCauseWith
def ifM[R, E](b: ZIO[R, E, Boolean]): IfZIO[R, E]

Runs onTrue if the result of b is true and onFalse otherwise.
Runs onTrue if the result of b is true and onFalse otherwise.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use ifZIO
def loop_[R, E, S](initial: S)(cont: (S) ⇒ Boolean, inc: (S) ⇒ S)(body: (S) ⇒ ZIO[R, E, Any]): ZIO[R, E, Unit]

Loops with the specified effectual function purely for its effects.
Loops with the specified effectual function purely for its effects. The moral equivalent of:
```
var s = initial

while (cont(s)) {
  body(s)
  s = inc(s)
}
```
Annotations
@deprecated
Deprecated
(Since version 2.0.0) use loopDiscard
def mapN[R, E, A, B, C, D, F](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C], zio4: ZIO[R, E, D])(f: (A, B, C, D) ⇒ F): ZIO[R, E, F]

Sequentially zips the specified effects using the specified combiner function.
Sequentially zips the specified effects using the specified combiner function.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def mapN[R, E, A, B, C, D](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C])(f: (A, B, C) ⇒ D): ZIO[R, E, D]

Sequentially zips the specified effects using the specified combiner function.
Sequentially zips the specified effects using the specified combiner function.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def mapN[R, E, A, B, C](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B])(f: (A, B) ⇒ C): ZIO[R, E, C]

Sequentially zips the specified effects using the specified combiner function.
Sequentially zips the specified effects using the specified combiner function.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def mapParN[R, E, A, B, C, D, F](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C], zio4: ZIO[R, E, D])(f: (A, B, C, D) ⇒ F): ZIO[R, E, F]

Returns an effect that executes the specified effects in parallel, combining their results with the specified f function.
Returns an effect that executes the specified effects in parallel, combining their results with the specified f function. If any effect fails, then the other effects will be interrupted.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def mapParN[R, E, A, B, C, D](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C])(f: (A, B, C) ⇒ D): ZIO[R, E, D]

Returns an effect that executes the specified effects in parallel, combining their results with the specified f function.
Returns an effect that executes the specified effects in parallel, combining their results with the specified f function. If any effect fails, then the other effects will be interrupted.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def mapParN[R, E, A, B, C](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B])(f: (A, B) ⇒ C): ZIO[R, E, C]

Returns an effect that executes the specified effects in parallel, combining their results with the specified f function.
Returns an effect that executes the specified effects in parallel, combining their results with the specified f function. If any effect fails, then the other effects will be interrupted.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def replicateM[R, E, A](n: Int)(effect: ZIO[R, E, A]): ZIO[R, E, Iterable[A]]

Performs this effect the specified number of times and collects the results.
Performs this effect the specified number of times and collects the results.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use replicateZIO
def replicateM_[R, E, A](n: Int)(effect: ZIO[R, E, A]): ZIO[R, E, Unit]

Performs this effect the specified number of times, discarding the results.
Performs this effect the specified number of times, discarding the results.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use replicateZIODiscard
def require[R, E, A](error: ⇒ E): (ZIO[R, E, Option[A]]) ⇒ ZIO[R, E, A]

Requires that the given ZIO[R, E, Option[A]] contain a value.
Requires that the given ZIO[R, E, Option[A]] contain a value. If there is no value, then the specified error will be raised.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use someOrFail
def services[A, B, C, D](implicit arg0: zio.Tag[A], arg1: zio.Tag[B], arg2: zio.Tag[C], arg3: zio.Tag[D]): URIO[Has[A] with Has[B] with Has[C] with Has[D], (A, B, C, D)]

Accesses the specified services in the environment of the effect.
Accesses the specified services in the environment of the effect.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use service
def services[A, B, C](implicit arg0: zio.Tag[A], arg1: zio.Tag[B], arg2: zio.Tag[C]): URIO[Has[A] with Has[B] with Has[C], (A, B, C)]

Accesses the specified services in the environment of the effect.
Accesses the specified services in the environment of the effect.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use service
def services[A, B](implicit arg0: zio.Tag[A], arg1: zio.Tag[B]): URIO[Has[A] with Has[B], (A, B)]

Accesses the specified services in the environment of the effect.
Accesses the specified services in the environment of the effect.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use service
def tupled[R, E, A, B, C, D](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C], zio4: ZIO[R, E, D]): ZIO[R, E, (A, B, C, D)]

Sequentially zips the specified effects.
Sequentially zips the specified effects. Specialized version of mapN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def tupled[R, E, A, B, C](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C]): ZIO[R, E, (A, B, C)]

Sequentially zips the specified effects.
Sequentially zips the specified effects. Specialized version of mapN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def tupled[R, E, A, B](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B]): ZIO[R, E, (A, B)]

Sequentially zips the specified effects.
Sequentially zips the specified effects. Specialized version of mapN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zip
def tupledPar[R, E, A, B, C, D](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C], zio4: ZIO[R, E, D]): ZIO[R, E, (A, B, C, D)]

Zips the specified effects in parallel.
Zips the specified effects in parallel. Specialized version of mapParN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def tupledPar[R, E, A, B, C](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B], zio3: ZIO[R, E, C]): ZIO[R, E, (A, B, C)]

Zips the specified effects in parallel.
Zips the specified effects in parallel. Specialized version of mapParN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def tupledPar[R, E, A, B](zio1: ZIO[R, E, A], zio2: ZIO[R, E, B]): ZIO[R, E, (A, B)]

Zips the specified effects in parallel.
Zips the specified effects in parallel. Specialized version of mapParN.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use zipPar
def unlessM[R, E](b: ZIO[R, E, Boolean]): UnlessZIO[R, E]

The moral equivalent of if (!p) exp when p has side-effects
The moral equivalent of if (!p) exp when p has side-effects

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use unlessZIO
def validatePar_[R, E, A](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any])(implicit ev: CanFail[E]): ZIO[R, ::[E], Unit]

Feeds elements of type A to f in parallel and accumulates all errors, discarding the successes.
Feeds elements of type A to f in parallel and accumulates all errors, discarding the successes.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use validateParDiscard
def validate_[R, E, A](in: Iterable[A])(f: (A) ⇒ ZIO[R, E, Any])(implicit ev: CanFail[E]): ZIO[R, ::[E], Unit]

Feeds elements of type A to f and accumulates all errors, discarding the successes.
Feeds elements of type A to f and accumulates all errors, discarding the successes.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use validateDiscard
def whenCaseM[R, E, A](a: ZIO[R, E, A])(pf: PartialFunction[A, ZIO[R, E, Any]]): ZIO[R, E, Unit]

Runs an effect when the supplied PartialFunction matches for the given effectful value, otherwise does nothing.
Runs an effect when the supplied PartialFunction matches for the given effectful value, otherwise does nothing.

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use whenCaseZIO
def whenM[R, E](b: ZIO[R, E, Boolean]): WhenZIO[R, E]

The moral equivalent of if (p) exp when p has side-effects
The moral equivalent of if (p) exp when p has side-effects

Annotations
@deprecated
Deprecated
(Since version 2.0.0) use whenZIO

Related Docs: trait ZIO | package zio

object ZIO extends ZIOCompanionPlatformSpecific with Serializable

Type Members

final class AccessPartiallyApplied[R] extends AnyVal

final class AccessZIOPartiallyApplied[R] extends AnyVal

final class BracketAcquire[-R, +E, +A] extends AnyVal

final class BracketAcquire_[-R, +E] extends AnyVal

final class BracketExitAcquire[-R, +E, +A] extends AnyVal

final class BracketExitRelease[-R, +E, E1, +A, B] extends AnyRef

final class BracketRelease[-R, +E, +A] extends AnyRef

final class BracketReleaseFn[R, E, A, B] extends ZIOFn2[A, Exit[E, B], URIO[R, Any]]

final class BracketRelease_[-R, +E] extends AnyRef

abstract class CanFilter[+E] extends AnyRef

final class ConstFn[A, B] extends ZIOFn1[A, B]

final class ConstZIOFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]

final class FoldCauseZIOFailureFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, A]]

final class FoldCauseZIOFailureTraceFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, A]]

final class ForkScopeRestore extends AnyVal

final class GetStateWithPartiallyApplied[S] extends AnyVal

final class Grafter extends AnyVal

final class IfZIO[R, E] extends AnyVal

final class InterruptStatusRestore extends AnyVal

final class MapErrorCauseFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, Nothing]]

final class MapErrorFn[R, E, E2, A] extends ZIOFn1[Cause[E], ZIO[R, E2, Nothing]]

final class MapFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]

final class ProvideSomeLayer[R0, -R, +E, +A] extends AnyVal

final class ServiceWithPartiallyApplied[Service] extends AnyVal

final class SucceedFn[R, E, A] extends ZIOFn1[A, ZIO[R, E, A]]

final class TapCauseRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]

final class TapDefectRefailFn[R, E, E1 >: E] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]

final class TapErrorRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]

final class TapErrorTraceRefailFn[R, E, E1 >: E, A] extends ZIOFn1[Cause[E], ZIO[R, E1, Nothing]]

final class TapFn[R, E, A] extends ZIOFn1[A, ZIO[R, E, A]]

final class TimeoutTo[-R, +E, +A, +B] extends AnyRef

final class UnlessZIO[R, E] extends AnyVal

final class UpdateService[-R, +E, +A, M] extends AnyVal

final class WhenZIO[R, E] extends AnyVal

implicit final class ZIOAutoCloseableOps[R, E, A <: AutoCloseable] extends AnyVal

sealed trait ZIOConstructor[-Environment, +Error, In] extends AnyRef

trait ZIOConstructorLowPriority1 extends ZIOConstructorLowPriority2

trait ZIOConstructorLowPriority2 extends ZIOConstructorLowPriority3

trait ZIOConstructorLowPriority3 extends AnyRef

implicit final class ZIOWithFilterOps[R, E, A] extends AnyVal

implicit final class ZioRefineToOrDieOps[R, E <: Throwable, A] extends AnyVal

final class ZipLeftFn[R, E, A, B] extends ZIOFn1[B, ZIO[R, E, B]]

final class ZipRightFn[R, E, A, B] extends ZIOFn1[A, ZIO[R, E, B]]

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

object CanFilter

object InterruptStatusRestore

object ZIOConstructor extends ZIOConstructorLowPriority1

def absolve[R, E, A](v: ZIO[R, E, Either[E, A]]): ZIO[R, E, A]

def access[R]: AccessPartiallyApplied[R]

def accessZIO[R]: AccessZIOPartiallyApplied[R]

def acquireReleaseExitWith[R, E, A, B](acquire: ZIO[R, E, A], release: (A, Exit[E, B]) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

def acquireReleaseExitWith[R, E, A](acquire: ZIO[R, E, A]): BracketExitAcquire[R, E, A]

def acquireReleaseWith[R, E, A, B](acquire: ZIO[R, E, A], release: (A) ⇒ URIO[R, Any], use: (A) ⇒ ZIO[R, E, B]): ZIO[R, E, B]

def acquireReleaseWith[R, E, A](acquire: ZIO[R, E, A]): BracketAcquire[R, E, A]

def allowInterrupt: UIO[Unit]

def apply[A](a: ⇒ A): Task[A]

final def asInstanceOf[T0]: T0

def async[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Any, blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

def asyncInterrupt[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Either[Canceler[R], ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

def asyncMaybe[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ Option[ZIO[R, E, A]], blockingOn: Id = Fiber.Id.None): ZIO[R, E, A]

def asyncWithCompletionHandler[T](op: (CompletionHandler[T, Any]) ⇒ Any): Task[T]

def asyncZIO[R, E, A](register: ((ZIO[R, E, A]) ⇒ Unit) ⇒ ZIO[R, E, Any]): ZIO[R, E, A]

def attempt[A](effect: ⇒ A): Task[A]

def attemptBlocking[A](effect: ⇒ A): Task[A]

def attemptBlockingCancelable[A](effect: ⇒ A)(cancel: UIO[Unit]): Task[A]

def attemptBlockingIO[A](effect: ⇒ A): IO[IOException, A]

def attemptBlockingInterrupt[A](effect: ⇒ A): Task[A]

def blocking[R, E, A](zio: ZIO[R, E, A]): ZIO[R, E, A]

def blockingExecutor: UIO[Executor]

def checkInterruptible[R, E, A](f: (zio.InterruptStatus) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

def checkTraced[R, E, A](f: (zio.TracingStatus) ⇒ ZIO[R, E, A]): ZIO[R, E, A]

def clone(): AnyRef

def collect[R, E, Key, Key2, Value, Value2](map: Map[Key, Value])(f: (Key, Value) ⇒ ZIO[R, Option[E], (Key2, Value2)]): ZIO[R, E, Map[Key2, Value2]]