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trait Catchable[F[_]] extends AnyRef

A context in which exceptions can be caught and thrown.

This class places no other class constraints on F, but it should be the case that exceptions raised via fail are caught by the nearest surrounding attempt and returned as a Left. In addition to catching explicitly raised exceptions via fail, we expect that attempt catch ambient exceptions that might occur when 'evaluating' an F.

We can state the requirement that attempt catch all ambient exceptions by stipulating that for all total functions of the form g: forall A . F[Throwable \/ A] => B, g compose attempt is also total.

Self Type
Catchable[F]
Source
Catchable.scala
Linear Supertypes
AnyRef, Any
Known Subclasses
IsomorphismCatchable
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Abstract Value Members

  1. abstract def attempt[A](f: F[A]): F[\/[Throwable, A]]
  2. abstract def fail[A](err: Throwable): F[A]

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
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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. val catchableSyntax: CatchableSyntax[F]
  6. def clone(): AnyRef
    Attributes
    protected[java.lang]
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    Annotations
    @native() @throws( ... )
  7. final def eq(arg0: AnyRef): Boolean
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  8. def equals(arg0: Any): Boolean
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  9. def finalize(): Unit
    Attributes
    protected[java.lang]
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    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
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    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
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    Annotations
    @native()
  12. final def isInstanceOf[T0]: Boolean
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  13. final def ne(arg0: AnyRef): Boolean
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  14. final def notify(): Unit
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    Annotations
    @native()
  15. final def notifyAll(): Unit
    Definition Classes
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    @native()
  16. final def synchronized[T0](arg0: ⇒ T0): T0
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  17. def toString(): String
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  18. final def wait(): Unit
    Definition Classes
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    @throws( ... )
  19. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    @throws( ... )
  20. final def wait(arg0: Long): Unit
    Definition Classes
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    @native() @throws( ... )

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