Class/Object

zio

ZRefM

Related Docs: object ZRefM | package zio

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sealed abstract class ZRefM[-RA, -RB, +EA, +EB, -A, +B] extends AnyRef

A ZRefM[RA, RB, EA, EB, A, B] is a polymorphic, purely functional description of a mutable reference. The fundamental operations of a ZRefM are set and get. set takes a value of type A and sets the reference to a new value, requiring an environment of type RA and potentially failing with an error of type EA. get gets the current value of the reference and returns a value of type B, requiring an environment of type RB and potentially failing with an error of type EB.

When the error and value types of the ZRefM are unified, that is, it is a ZRefM[E, E, A, A], the ZRefM also supports atomic modify and update operations.

Unlike ZRef, ZRefM allows performing effects within update operations, at some cost to performance. Writes will semantically block other writers, while multiple readers can read simultaneously.

Self Type
ZRefM[RA, RB, EA, EB, A, B]
Linear Supertypes
AnyRef, Any
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Abstract Value Members

  1. abstract def foldAllM[RC <: RA with RB, RD <: RB, EC, ED, C, D](ea: (EA) ⇒ EC, eb: (EB) ⇒ ED, ec: (EB) ⇒ EC, ca: (C) ⇒ (B) ⇒ ZIO[RC, EC, A], bd: (B) ⇒ ZIO[RD, ED, D]): ZRefM[RC, RD, EC, ED, C, D]

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    Folds over the error and value types of the ZRefM, allowing access to the state in transforming the set value.

    Folds over the error and value types of the ZRefM, allowing access to the state in transforming the set value. This is a more powerful version of foldM but requires unifying the environment and error types.

  2. abstract def foldM[RC <: RA, RD <: RB, EC, ED, C, D](ea: (EA) ⇒ EC, eb: (EB) ⇒ ED, ca: (C) ⇒ ZIO[RC, EC, A], bd: (B) ⇒ ZIO[RD, ED, D]): ZRefM[RC, RD, EC, ED, C, D]

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    Folds over the error and value types of the ZRefM.

    Folds over the error and value types of the ZRefM. This is a highly polymorphic method that is capable of arbitrarily transforming the error and value types of the ZRefM. For most use cases one of the more specific combinators implemented in terms of foldM will be more ergonomic but this method is extremely useful for implementing new combinators.

  3. abstract def get: ZIO[RB, EB, B]

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    Reads the value from the ZRefM.

  4. abstract def set(a: A): ZIO[RA, EA, Unit]

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    Writes a new value to the ZRefM, with a guarantee of immediate consistency (at some cost to performance).

  5. abstract def setAsync(a: A): ZIO[RA, EA, Unit]

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    Writes a new value to the ZRefM without providing a guarantee of immediate consistency.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )

  6. final def collect[C](pf: PartialFunction[B, C]): ZRefM[RA, RB, EA, Option[EB], A, C]

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    Maps and filters the get value of the ZRefM with the specified partial function, returning a ZRefM with a get value that succeeds with the result of the partial function if it is defined or else fails with None.

  7. final def collectM[RC <: RB, EC >: EB, C](pf: PartialFunction[B, ZIO[RC, EC, C]]): ZRefM[RA, RC, EA, Option[EC], A, C]

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    Maps and filters the get value of the ZRefM with the specified effectual partial function, returning a ZRefM with a get value that succeeds with the result of the partial function if it is defined or else fails with None.

  8. final def contramap[C](f: (C) ⇒ A): ZRefM[RA, RB, EA, EB, C, B]

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    Transforms the set value of the ZRefM with the specified function.

  9. final def contramapM[RC <: RA, EC >: EA, C](f: (C) ⇒ ZIO[RC, EC, A]): ZRefM[RC, RB, EC, EB, C, B]

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    Transforms the set value of the ZRefM with the specified effectual function.

  10. final def dimap[C, D](f: (C) ⇒ A, g: (B) ⇒ D): ZRefM[RA, RB, EA, EB, C, D]

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    Transforms both the set and get values of the ZRefM with the specified functions.

  11. final def dimapError[EC, ED](f: (EA) ⇒ EC, g: (EB) ⇒ ED): ZRefM[RA, RB, EC, ED, A, B]

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    Transforms both the set and get errors of the ZRefM with the specified functions.

  12. final def dimapM[RC <: RA, RD <: RB, EC >: EA, ED >: EB, C, D](f: (C) ⇒ ZIO[RC, EC, A], g: (B) ⇒ ZIO[RD, ED, D]): ZRefM[RC, RD, EC, ED, C, D]

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    Transforms both the set and get values of the ZRefM with the specified effectual functions.

  13. final def eq(arg0: AnyRef): Boolean

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  14. def equals(arg0: Any): Boolean

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  15. final def filterInput[A1 <: A](f: (A1) ⇒ Boolean): ZRefM[RA, RB, Option[EA], EB, A1, B]

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    Filters the set value of the ZRefM with the specified predicate, returning a ZRefM with a set value that succeeds if the predicate is satisfied or else fails with None.

  16. final def filterInputM[RC <: RA, EC >: EA, A1 <: A](f: (A1) ⇒ ZIO[RC, EC, Boolean]): ZRefM[RC, RB, Option[EC], EB, A1, B]

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    Filters the set value of the ZRefM with the specified effectual predicate, returning a ZRefM with a set value that succeeds if the predicate is satisfied or else fails with None.

  17. final def filterOutput(f: (B) ⇒ Boolean): ZRefM[RA, RB, EA, Option[EB], A, B]

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    Filters the get value of the ZRefM with the specified predicate, returning a ZRefM with a get value that succeeds if the predicate is satisfied or else fails with None.

  18. final def filterOutputM[RC <: RB, EC >: EB](f: (B) ⇒ ZIO[RC, EC, Boolean]): ZRefM[RA, RC, EA, Option[EC], A, B]

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    Filters the get value of the ZRefM with the specified effectual predicate, returning a ZRefM with a get value that succeeds if the predicate is satisfied or else fails with None.

  19. def finalize(): Unit

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    protected[java.lang]
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    Annotations
    @throws( classOf[java.lang.Throwable] )

  20. def fold[EC, ED, C, D](ea: (EA) ⇒ EC, eb: (EB) ⇒ ED, ca: (C) ⇒ Either[EC, A], bd: (B) ⇒ Either[ED, D]): ZRefM[RA, RB, EC, ED, C, D]

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    Folds over the error and value types of the ZRefM.

  21. def foldAll[EC, ED, C, D](ea: (EA) ⇒ EC, eb: (EB) ⇒ ED, ec: (EB) ⇒ EC, ca: (C) ⇒ (B) ⇒ Either[EC, A], bd: (B) ⇒ Either[ED, D]): ZRefM[RA with RB, RB, EC, ED, C, D]

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    Folds over the error and value types of the ZRefM, allowing access to the state in transforming the set value but requiring unifying the error type.

  22. final def getClass(): Class[_]

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  23. def hashCode(): Int

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  24. final def isInstanceOf[T0]: Boolean

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  25. final def map[C](f: (B) ⇒ C): ZRefM[RA, RB, EA, EB, A, C]

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    Transforms the get value of the ZRefM with the specified function.

  26. final def mapM[RC <: RB, EC >: EB, C](f: (B) ⇒ ZIO[RC, EC, C]): ZRefM[RA, RC, EA, EC, A, C]

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    Transforms the get value of the ZRefM with the specified effectual function.

  27. final def ne(arg0: AnyRef): Boolean

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  28. final def notify(): Unit

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  29. final def notifyAll(): Unit

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  30. final def readOnly: ZRefM[RA, RB, EA, EB, Nothing, B]

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    Returns a read only view of the ZRefM.

  31. final def synchronized[T0](arg0: ⇒ T0): T0

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  32. final def tapInput[RC <: RA, EC >: EA, A1 <: A](f: (A1) ⇒ ZIO[RC, EC, Any]): ZRefM[RC, RB, EC, EB, A1, B]

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    Performs the specified effect every time a value is written to this ZRefM.

  33. final def tapOutput[RC <: RB, EC >: EB](f: (B) ⇒ ZIO[RC, EC, Any]): ZRefM[RA, RC, EA, EC, A, B]

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    Performs the specified effect very time a value is read from this ZRefM.

  34. def toString(): String

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  35. final def wait(): Unit

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    @throws( ... )

  36. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )

  37. final def wait(arg0: Long): Unit

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  38. final def writeOnly: ZRefM[RA, RB, EA, Unit, A, Nothing]

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    Returns a write only view of the ZRefM.

Inherited from AnyRef

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