Failure

scala.util.Failure

final case class Failure[+T](exception: Throwable) extends Try[T]

Attributes

Source: Try.scala
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Supertypes: class Try[T]

trait Serializable

trait Product

trait Equals

class Object

trait Matchable

class Any
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Members list

Type members

Inherited classlikes

We need a whole WithFilter class to honor the "doesn't create a new collection" contract even though it seems unlikely to matter much in a collection with max size 1.

Attributes

Inherited from:: Try
Source: Try.scala
Supertypes: class Object

trait Matchable

class Any

Value members

Concrete methods

Applies the given partial function to the value from this Success or returns this if this is a Failure.

Attributes

Definition Classes: Try
Source: Try.scala

Inverts this Try.

Inverts this Try. If this is a Failure, returns its exception wrapped in a Success. If this is a Success, returns a Failure containing an UnsupportedOperationException.

Attributes

Definition Classes: Try
Source: Try.scala

Converts this to a Failure if the predicate is not satisfied.

Attributes

Definition Classes: Try
Source: Try.scala

Returns the given function applied to the value from this Success or returns this if this is a Failure.

Attributes

Definition Classes: Try
Source: Try.scala

Transforms a nested Try, ie, a Try of type Try[Try[T]], into an un-nested Try, ie, a Try of type Try[T].

Attributes

Definition Classes: Try
Source: Try.scala

Applies fa if this is a Failure or fb if this is a Success.

Applies fa if this is a Failure or fb if this is a Success. If fb is initially applied and throws an exception, then fa is applied with this exception.

Value parameters

fa: the function to apply if this is a Failure
fb: the function to apply if this is a Success

Attributes

Returns

the results of applying the function

Example

val result: Try[Int] = Try { string.toInt }
log(result.fold(
 ex => "Operation failed with " + ex,
 v => "Operation produced value: " + v
))

Definition Classes

Try

Source

Try.scala

Applies the given function f if this is a Success, otherwise returns Unit if this is a Failure.

Note: If f throws, then this method may throw an exception.

Attributes

Definition Classes: Try
Source: Try.scala

Returns the value from this Success or throws the exception if this is a Failure.

Attributes

Definition Classes: Try
Source: Try.scala

Returns the value from this Success or the given default argument if this is a Failure.

Note:: This will throw an exception if it is not a success and default throws an exception.

Attributes

Definition Classes: Try
Source: Try.scala

Returns true if the Try is a Failure, false otherwise.

Attributes

Definition Classes: Try
Source: Try.scala

Returns true if the Try is a Success, false otherwise.

Attributes

Definition Classes: Try
Source: Try.scala

Maps the given function to the value from this Success or returns this if this is a Failure.

Attributes

Definition Classes: Try
Source: Try.scala

Returns this Try if it's a Success or the given default argument if this is a Failure.

Attributes

Definition Classes: Try
Source: Try.scala

Applies the given function f if this is a Failure, otherwise returns this if this is a Success.

Applies the given function f if this is a Failure, otherwise returns this if this is a Success. This is like map for the exception.

Attributes

Definition Classes: Try
Source: Try.scala

Applies the given function f if this is a Failure, otherwise returns this if this is a Success.

Applies the given function f if this is a Failure, otherwise returns this if this is a Success. This is like flatMap for the exception.

Attributes

Definition Classes: Try
Source: Try.scala

Returns Left with Throwable if this is a Failure, otherwise returns Right with Success value.

Attributes

Definition Classes: Try
Source: Try.scala

Returns None if this is a Failure or a Some containing the value if this is a Success.

Attributes

Definition Classes: Try
Source: Try.scala

Completes this Try by applying the function f to this if this is of type Failure, or conversely, by applying s if this is a Success.

Attributes

Definition Classes: Try
Source: Try.scala

Inherited methods

An iterator over the names of all the elements of this product.

Attributes

Inherited from:: Product
Source: Product.scala

An iterator over all the elements of this product.

Attributes

Returns: in the default implementation, an Iterator[Any]
Inherited from:: Product
Source: Product.scala

Creates a non-strict filter, which eventually converts this to a Failure if the predicate is not satisfied.

Note: unlike filter, withFilter does not create a new Try. Instead, it restricts the domain of subsequent map, flatMap, foreach, and withFilter operations.

As Try is a one-element collection, this may be a bit overkill, but it's consistent with withFilter on Option and the other collections.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: an object of class WithFilter, which supports map, flatMap, foreach, and withFilter operations. All these operations apply to those elements of this Try which satisfy the predicate p.
Inherited from:: Try
Source: Try.scala

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