trait Exceptions extends AnyRef

This trait provides methods to catch exceptions and transform them into values which can be passed to further computations.

It uses the facilities found in the scala.util.control.Exception object while providing a more concise api on some use cases.

See also

org.specs2.control.ExceptionsSpec for examples

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Exceptions
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  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
    Definition Classes
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  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def catchAll[T, S](a: ⇒ T)(f: (Throwable) ⇒ S): Either[S, T]

    try to evaluate an expression, returning Either

    try to evaluate an expression, returning Either

    If the expression throws any Throwable a function f is used to return the left value of the Either returned value.

  6. def catchAllOr[T](a: ⇒ T)(f: (Throwable) ⇒ T): T

    try to evaluate an expression, returning a value T

    try to evaluate an expression, returning a value T

    If the expression throws a Throwable a function f is used to return a value of the expected type.

  7. def catchAllOrElse[T](a: ⇒ T)(ko: ⇒ T): T

    try to evaluate an expression, returning a value T

    try to evaluate an expression, returning a value T

    If the expression throws a Throwable, then return a default value

  8. def catchAll_Either[T, S](a: ⇒ T)(f: (Throwable) ⇒ S): Either[S, T]

    try to evaluate an expression, returning Either

    try to evaluate an expression, returning Either

    If the expression throws an Exception a function f is used to return the left value of the Either returned value.

  9. def clone(): AnyRef
    Attributes
    protected[java.lang]
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    @native() @throws( ... )
  10. final def eq(arg0: AnyRef): Boolean
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  11. def equals(arg0: Any): Boolean
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  12. def finalize(): Unit
    Attributes
    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]
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    @native()
  14. def hashCode(): Int
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    @native()
  15. final def isInstanceOf[T0]: Boolean
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  16. final def ne(arg0: AnyRef): Boolean
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  17. final def notify(): Unit
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    @native()
  18. final def notifyAll(): Unit
    Definition Classes
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    @native()
  19. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  20. def toString(): String
    Definition Classes
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  21. def tryCollect[T](a: ⇒ T)(partialFunction: PartialFunction[T, Boolean]): Boolean

    try to apply a partial function to a value

  22. def tryCollectOr[T, S](a: ⇒ T, or: S)(partialFunction: PartialFunction[T, S]): S

    try to apply a partial function to a value, with a default value if something goes wrong

  23. def tryMap[T, S](a: ⇒ T)(ok: S)(ko: S): S

    try to evaluate an expression and return ok if nothing fails.

    try to evaluate an expression and return ok if nothing fails. return ko otherwise

  24. def tryOk[T](a: ⇒ T): Boolean

    try to evaluate an expression and return true if nothing fails.

    try to evaluate an expression and return true if nothing fails. return false otherwise

  25. def tryOr[T](a: ⇒ T)(f: (Throwable) ⇒ T): T

    try to evaluate an expression, returning a value T

    try to evaluate an expression, returning a value T

    If the expression throws an Exception a function f is used to return a value of the expected type.

  26. def tryOrElse[T](a: ⇒ T)(ko: T): T

    try to evaluate an expression and return it if nothing fails.

    try to evaluate an expression and return it if nothing fails. return ko otherwise

  27. def tryOrNone[T](a: ⇒ T): Option[T]

    try to evaluate an expression and return it in an Option if nothing fails.

    try to evaluate an expression and return it in an Option if nothing fails. return None otherwise

  28. def try_Either[T, S](a: ⇒ T)(f: (Throwable) ⇒ S): Either[S, T]

    try to evaluate an expression, returning Either

    try to evaluate an expression, returning Either

    If the expression throws an Exception a function f is used to return the left value of the Either returned value.

  29. def trye[T, S](a: ⇒ T)(f: (Throwable) ⇒ S): Either[S, T]

    try to evaluate an expression, returning Either

    try to evaluate an expression, returning Either

    If the expression throws an Exception a function f is used to return the left value of the Either returned value.

  30. def tryo[T](a: ⇒ T): Option[T]

    try to evaluate an expression, returning an Option

    try to evaluate an expression, returning an Option

    The 'tryo' name comes from the lift project: http://liftweb.net

    returns

    None if there is an exception, or Some(value)

  31. final def wait(): Unit
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    @throws( ... )
  32. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    @throws( ... )
  33. final def wait(arg0: Long): Unit
    Definition Classes
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    @native() @throws( ... )

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