scala.util

# Failure

#### final case class Failure[+T](exception: Throwable) extends Try[T] with Product with Serializable

Source
  Try.scala

Linear Supertypes
Serializable, java.io.Serializable, Product, Equals, Try[T], AnyRef, Any
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1. Failure
2. Serializable
3. Serializable
4. Product
5. Equals
6. Try
7. AnyRef
8. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

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### Instance Constructors

1. #### new Failure(exception: Throwable)

### Type Members

1. #### class WithFilter extends AnyRef

   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.

   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.

   Definition Classes
     Try

### Value Members

1. #### final def !=(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

2. #### final def ##(): Int

   Definition Classes
     AnyRef → Any

3. #### def +(other: String): String

   Implicit information
     This member is added by an implicit conversion from Failure[T] to any2stringadd[Failure[T]] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

4. #### def ->[B](y: B): (Failure[T], B)

   Implicit information
     This member is added by an implicit conversion from Failure[T] to ArrowAssoc[Failure[T]] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()

5. #### final def ==(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

6. #### final def asInstanceOf[T0]: T0

   Definition Classes
     Any

7. #### def clone(): AnyRef

   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... )

8. #### def ensuring(cond: (Failure[T]) ⇒ Boolean, msg: ⇒ Any): Failure[T]

   Implicit information
     This member is added by an implicit conversion from Failure[T] to Ensuring[Failure[T]] performed by method Ensuring in scala.Predef.
   Definition Classes
     Ensuring

9. #### def ensuring(cond: (Failure[T]) ⇒ Boolean): Failure[T]

   Implicit information
     This member is added by an implicit conversion from Failure[T] to Ensuring[Failure[T]] performed by method Ensuring in scala.Predef.
   Definition Classes
     Ensuring

10. #### def ensuring(cond: Boolean, msg: ⇒ Any): Failure[T]

    Implicit information
      This member is added by an implicit conversion from Failure[T] to Ensuring[Failure[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

11. #### def ensuring(cond: Boolean): Failure[T]

    Implicit information
      This member is added by an implicit conversion from Failure[T] to Ensuring[Failure[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

12. #### final def eq(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

13. #### val exception: Throwable

14. #### def failed: Try[Throwable]

    Completes this `Try` with an exception wrapped in a `Success`.

    Completes this `Try` with an exception wrapped in a `Success`. The exception is either the exception that the `Try` failed with (if a `Failure`) or an `UnsupportedOperationException`.

    Definition Classes
      Failure → Try

15. #### def filter(p: (T) ⇒ Boolean): Try[T]

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

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

    Definition Classes
      Failure → Try

16. #### def finalize(): Unit

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )

17. #### def flatMap[U](f: (T) ⇒ Try[U]): Try[U]

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

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

    Definition Classes
      Failure → Try

18. #### def flatten[U](implicit ev: <:<[T, Try[U]]): Try[U]

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

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

    Definition Classes
      Failure → Try

19. #### def foreach[U](f: (T) ⇒ U): Unit

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

    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.

    Definition Classes
      Failure → Try

20. #### def formatted(fmtstr: String): String

    Returns string formatted according to given `format` string.

    Returns string formatted according to given `format` string. Format strings are as for `String.format` (@see java.lang.String.format).

    Implicit information
      This member is added by an implicit conversion from Failure[T] to StringFormat[Failure[T]] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

21. #### def get: T

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

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

    Definition Classes
      Failure → Try

22. #### final def getClass(): Class[_]

    Definition Classes
      AnyRef → Any

23. #### def getOrElse[U >: T](default: ⇒ U): U

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

    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.

    Definition Classes
      Try

24. #### def isFailure: Boolean

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

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

    Definition Classes
      Failure → Try

25. #### final def isInstanceOf[T0]: Boolean

    Definition Classes
      Any

26. #### def isSuccess: Boolean

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

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

    Definition Classes
      Failure → Try

27. #### def map[U](f: (T) ⇒ U): Try[U]

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

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

    Definition Classes
      Failure → Try

28. #### final def ne(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

29. #### final def notify(): Unit

    Definition Classes
      AnyRef

30. #### final def notifyAll(): Unit

    Definition Classes
      AnyRef

31. #### def orElse[U >: T](default: ⇒ Try[U]): Try[U]

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

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

    Definition Classes
      Try

32. #### def recover[U >: T](rescueException: PartialFunction[Throwable, U]): Try[U]

    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.

    Definition Classes
      Failure → Try

33. #### def recoverWith[U >: T](f: PartialFunction[Throwable, Try[U]]): Try[U]

    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.

    Definition Classes
      Failure → Try

34. #### final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
      AnyRef

35. #### def toOption: Option[T]

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

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

    Definition Classes
      Try

36. #### def transform[U](s: (T) ⇒ Try[U], f: (Throwable) ⇒ Try[U]): Try[U]

    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`.

    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`.

    Definition Classes
      Try

37. #### final def wait(): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

38. #### final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

39. #### final def wait(arg0: Long): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

40. #### final def withFilter(p: (T) ⇒ Boolean): WithFilter

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

    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.

    p

      the predicate used to test elements.

    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`.

    Definition Classes
      Try
    Annotations
      @inline()

41. #### def →[B](y: B): (Failure[T], B)

    Implicit information
      This member is added by an implicit conversion from Failure[T] to ArrowAssoc[Failure[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from Serializable

### Inherited from java.io.Serializable

### Inherited from Product

### Inherited from Equals

### Inherited from Try[T]

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from Failure[T] to any2stringadd[Failure[T]]

### Inherited by implicit conversion StringFormat from Failure[T] to StringFormat[Failure[T]]

### Inherited by implicit conversion Ensuring from Failure[T] to Ensuring[Failure[T]]

### Inherited by implicit conversion ArrowAssoc from Failure[T] to ArrowAssoc[Failure[T]]

### Ungrouped