EitherTFunctions

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

   

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7. def equals(arg0: Any): Boolean

   

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8. def finalize(): Unit

   

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9. final def fromEither[F[_]]: FromEitherPartiallyApplied[F]

   

   Transforms an Either into an EitherT, lifted into the specified Applicative.

   Transforms an Either into an EitherT, lifted into the specified Applicative.

   Note: The return type is a FromEitherPartiallyApplied[F], which has an apply method on it, allowing you to call fromEither like this:

   scala> import cats.implicits._
   scala> val t: Either[String, Int] = Either.right(3)
   scala> EitherT.fromEither[Option](t)
   res0: EitherT[Option, String, Int] = EitherT(Some(Right(3)))

   The reason for the indirection is to emulate currying type parameters.

10. final def fromOption[F[_]]: FromOptionPartiallyApplied[F]

    

    Transforms an Option into an EitherT, lifted into the specified Applicative and using the second argument if the Option is a None.

    Transforms an Option into an EitherT, lifted into the specified Applicative and using the second argument if the Option is a None.

    scala> import cats.implicits._
    scala> val o: Option[Int] = None
    scala> EitherT.fromOption[List](o, "Answer not known.")
    res0: EitherT[List, String, Int]  = EitherT(List(Left(Answer not known.)))
    scala> EitherT.fromOption[List](Some(42), "Answer not known.")
    res1: EitherT[List, String, Int] = EitherT(List(Right(42)))

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

    

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12. def hashCode(): Int

    

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13. final def isInstanceOf[T0]: Boolean

    

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14. final def left[F[_], A, B](fa: F[A])(implicit F: Functor[F]): EitherT[F, A, B]

    

15. final def liftT[F[_], A, B](fb: F[B])(implicit F: Functor[F]): EitherT[F, A, B]

    

    Alias for right

    Alias for right

    scala> import cats.data.EitherT
    scala> import cats.implicits._
    scala> val o: Option[Int] = Some(3)
    scala> val n: Option[Int] = None
    scala> EitherT.liftT(o)
    res0: cats.data.EitherT[Option,Nothing,Int] = EitherT(Some(Right(3)))
    scala> EitherT.liftT(n)
    res1: cats.data.EitherT[Option,Nothing,Int] = EitherT(None)

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

    

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17. final def notify(): Unit

    

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18. final def notifyAll(): Unit

    

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19. final def pure[F[_], A, B](b: B)(implicit F: Applicative[F]): EitherT[F, A, B]

    

20. final def right[F[_], A, B](fb: F[B])(implicit F: Functor[F]): EitherT[F, A, B]

    

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

    

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22. def toString(): String

    

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23. final def wait(): Unit

    

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

    

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

    

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