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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- 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.
- 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.
- 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
- 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.
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- def tryCollect[T](a: => T)(partialFunction: PartialFunction[T, Boolean]): Boolean
try to apply a partial function to a value
- 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
- 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
- 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
- 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.
- 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
- 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
- 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.
- 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.
- 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)
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