specs2-common
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specs2-common/org.specs2/org.specs2.control/Exceptions

Exceptions

org.specs2.control.Exceptions
See theExceptions companion object
trait Exceptions

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.

Attributes

See also

org.specs2.control.ExceptionsSpec for examples

Companion
object
Graph
Supertypes
class Object
trait Matchable
class Any
Known subtypes
object Exceptions.type

Members list

Value members

Concrete methods

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.

Attributes

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.

Attributes

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

Attributes

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.

Attributes

def tryCollect[T](a: => T)(partialFunction: PartialFunction[T, Boolean]): Boolean

try to apply a partial function to a value

try to apply a partial function to a value

Attributes

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

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

Attributes

def tryMap[T, S](a: => T)(ok: S)(ko: S): S

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

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

Attributes

def tryOk[T](a: => T): Boolean

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

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

Attributes

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.

Attributes

def tryOrElse[T](a: => T)(ko: T): T

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

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

Attributes

def tryOrNone[T](a: => T): Option[T]

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

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

Attributes

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.

Attributes

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.

Attributes

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

Attributes

Returns

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

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