Trait/Object

org.specs2.control.eff

WriterEffect

Related Docs: object WriterEffect | package eff

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trait WriterEffect extends WriterCreation with WriterInterpretation

Effect for logging values alongside computations

Compared to traditional Writer monad which accumulates values by default this effect can be interpreted in different ways:

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  1. WriterEffect
  2. WriterInterpretation
  3. WriterCreation
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  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. implicit def ListFold[A]: FoldId[A, List[A]]

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    Definition Classes
    WriterInterpretation
  5. def MonoidFold[A](implicit arg0: Monoid[A]): FoldId[A, A]

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    Definition Classes
    WriterInterpretation
  6. def UnsafeFold[A](f: (A) ⇒ Unit): FoldId[A, Unit]

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    WriterInterpretation
  7. final def asInstanceOf[T0]: T0

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  8. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )
  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]

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  13. def hashCode(): Int

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  14. final def isInstanceOf[T0]: Boolean

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

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  16. final def notify(): Unit

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  17. final def notifyAll(): Unit

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  18. def runWriter[R, U, O, A, B](w: Eff[R, A])(implicit m: Aux[[β$2$]Writer[O, β$2$], R, U]): Eff[U, (A, List[O])]

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    run a writer effect and return the list of written values

    run a writer effect and return the list of written values

    This uses a ListBuffer internally to append values

    Definition Classes
    WriterInterpretation
  19. def runWriterFold[R, U, O, A, B](w: Eff[R, A])(fold: FoldId[O, B])(implicit m: Aux[[β$3$]Writer[O, β$3$], R, U]): Eff[U, (A, B)]

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    More general fold of runWriter where we can use a fold to accumulate values in a mutable buffer

    More general fold of runWriter where we can use a fold to accumulate values in a mutable buffer

    Definition Classes
    WriterInterpretation
  20. def runWriterUnsafe[R, U, O, A](w: Eff[R, A])(f: (O) ⇒ Unit)(implicit m: Aux[[β$7$]Writer[O, β$7$], R, U]): Eff[U, A]

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    Run a side-effecting fold

    Run a side-effecting fold

    Definition Classes
    WriterInterpretation
  21. final def synchronized[T0](arg0: ⇒ T0): T0

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  22. def tell[R, O](o: O)(implicit member: |=[[β$0$]Writer[O, β$0$], R]): Eff[R, Unit]

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    write a given value

    write a given value

    Definition Classes
    WriterCreation
  23. def toString(): String

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  24. final def wait(): Unit

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    @throws( ... )
  25. final def wait(arg0: Long, arg1: Int): Unit

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

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Inherited from WriterInterpretation

Inherited from WriterCreation

Inherited from AnyRef

Inherited from Any

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