scala.util.Failure

Instance Constructors

new Failure(exception: Throwable)

Value Members

final def !=(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def !=(arg0: Any): Boolean

Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.

Definition Classes
Any
final def ##(): Int

Equivalent to x.hashCode except for boxed numeric types.
Equivalent to x.hashCode except for boxed numeric types. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them.
returns
a hash value consistent with ==

Definition Classes
AnyRef → Any
final def ==(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def ==(arg0: Any): Boolean

Test two objects for equality.
Test two objects for equality.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Definition Classes
Any
final def asInstanceOf[T0]: T0

Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.
returns
the receiver object.

Definition Classes
Any
Exceptions thrown
ClassCastException
if the receiver object is not an instance of the erasure of type T0.
def canEqual(arg0: Any): Boolean

A method that should be called from every well-designed equals method that is open to be overridden in a subclass.
A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.
returns
true if this instance can possibly equal that, otherwise false

Definition Classes
Failure → Equals
def clone(): AnyRef

Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
returns
a copy of the receiver object.

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws()
Note
not specified by SLS as a member of AnyRef
final def eq(arg0: AnyRef): Boolean

Tests whether the argument (arg0) is a reference to the receiver object (this).
Tests whether the argument (arg0) is a reference to the receiver object (this).
The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:
- It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
- For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
- null.eq(null) returns true.
When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
returns
true if the argument is a reference to the receiver object; false otherwise.

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

The universal equality method defined in AnyRef.
The universal equality method defined in AnyRef.
returns
true if the receiver object is equivalent to the argument; false otherwise.

Definition Classes
Failure → Equals → AnyRef → Any
val exception: Throwable
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
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
def finalize(): Unit

Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws()
Note
not specified by SLS as a member of AnyRef
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
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
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
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
final def getClass(): java.lang.Class[_]

A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
returns
a representation that corresponds to the dynamic class of the receiver object.

Definition Classes
AnyRef → Any
Note
not specified by SLS as a member of AnyRef
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
def hashCode(): Int

The hashCode method for reference types.
The hashCode method for reference types. See hashCode in Any.
returns
the hash code value for this object.

Definition Classes
Failure → AnyRef → Any
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
final def isInstanceOf[T0]: Boolean

Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.

Definition Classes
Any
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
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
final def ne(arg0: AnyRef): Boolean

Equivalent to !(this eq that).
Equivalent to !(this eq that).
returns
true if the argument is not a reference to the receiver object; false otherwise.

Definition Classes
AnyRef
final def notify(): Unit

Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.

Definition Classes
AnyRef
Note
not specified by SLS as a member of AnyRef
final def notifyAll(): Unit

Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.

Definition Classes
AnyRef
Note
not specified by SLS as a member of AnyRef
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
def productArity: Int

The size of this product.
The size of this product.
returns
for a product A(x_1, ..., x_k), returns k

Definition Classes
Failure → Product
def productElement(arg0: Int): Any

The nth element of this product, 0-based.
The nth element of this product, 0-based. In other words, for a product A(x_1, ..., x_k), returns x_(n+1) where 0 < n < k.
returns
the element n elements after the first element

Definition Classes
Failure → Product
Exceptions thrown
IndexOutOfBoundsException
def productIterator: Iterator[Any]

An iterator over all the elements of this product.
An iterator over all the elements of this product.
returns
in the default implementation, an Iterator[Any]

Definition Classes
Product
def productPrefix: String

A string used in the toString methods of derived classes.
A string used in the toString methods of derived classes. Implementations may override this method to prepend a string prefix to the result of toString methods.
returns
in the default implementation, the empty string

Definition Classes
Failure → Product
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
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
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
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
def toString(): String

Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
returns
a String representation of the object.

Definition Classes
Failure → AnyRef → Any
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
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws()
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws()
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws()

Deprecated Value Members

def productElements: Iterator[Any]

Definition Classes
Product
Annotations
@deprecated
Deprecated
(Since version 2.8.0) use productIterator instead

Failure

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

Instance Constructors

new Failure(exception: Throwable)

Value Members

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def canEqual(arg0: Any): Boolean

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

val exception: Throwable

def failed: Try[Throwable]

def filter(p: (T) ⇒ Boolean): Try[T]

def finalize(): Unit

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

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

def foreach[U](f: (T) ⇒ U): Unit

def get: T

final def getClass(): java.lang.Class[_]

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

def hashCode(): Int

def isFailure: Boolean

final def isInstanceOf[T0]: Boolean

def isSuccess: Boolean

def map[U](f: (T) ⇒ U): Try[U]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

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

def productArity: Int

def productElement(arg0: Int): Any

def productIterator: Iterator[Any]

def productPrefix: String

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

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

final def synchronized[T0](arg0: ⇒ T0): T0

def toOption: Option[T]

def toString(): String

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

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Deprecated Value Members

def productElements: Iterator[Any]

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from Try[T]

Inherited from AnyRef

Inherited from Any