o != arg0
is the same as !(o == (arg0))
.
o != arg0
is the same as !(o == (arg0))
.
the object to compare against this object for dis-equality.
false
if the receiver object is equivalent to the argument; true
otherwise.
o == arg0
is the same as if (o eq null) arg0 eq null else o.equals(arg0)
.
o == arg0
is the same as if (o eq null) arg0 eq null else o.equals(arg0)
.
the object to compare against this object for equality.
true
if the receiver object is equivalent to the argument; false
otherwise.
o == arg0
is the same as o.equals(arg0)
.
o == arg0
is the same as o.equals(arg0)
.
the object to compare against this object for equality.
true
if the receiver object is equivalent to the argument; false
otherwise.
Returns the given function applied to the value from this Return or returns this if this is a Throw.
Returns the given function applied to the value from this Return or returns this if this is a Throw. Alias for flatMap
Block, but only as long as the given Timeout.
Block, but only as long as the given Timeout.
Block indefinitely, wait for the result of the Future to be available.
This method is used to cast the receiver object to be of type T0
.
This method is used to 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 expression1.asInstanceOf[String]
will throw a ClassCastException
at runtime, while the expressionList(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 typed.
the receiver object.
This method creates and returns a copy of the receiver object.
This method creates and returns a copy of the receiver object.
The default implementation of the clone
method is platform dependent.
a copy of the receiver object.
Invoked regardless of whether the computation completed successfully or unsuccessfully.
Invoked regardless of whether the computation completed successfully or unsuccessfully.
Implemented in terms of respond
so that subclasses control evaluation order. Returns this
.
This method is used to test whether the argument (arg0
) is a reference to the
receiver object (this
).
This method is used to test whether the argument (arg0
) is a reference to the
receiver object (this
).
The eq
method implements an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence relation] on
non-null instances of AnyRef
:
* It is reflexive: for any non-null instance x
of type AnyRef
, x.eq(x)
returns true
.
* It is symmetric: for any non-null instances x
and y
of type AnyRef
, x.eq(y)
returns true
if and
only if y.eq(x)
returns true
.
* It is transitive: for any non-null instances x
, y
, and z
of type AnyRef
if x.eq(y)
returns true
and y.eq(z)
returns true
, then x.eq(z)
returns true
.
Additionally, the eq
method has three other 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
).
the object to compare against this object for reference equality.
true
if the argument is a reference to the receiver object; false
otherwise.
This method is used to compare the receiver object (this
) with the argument object (arg0
) for equivalence.
This method is used to compare the receiver object (this
) with the argument object (arg0
) for equivalence.
The default implementations of this method is an [http://en.wikipedia.org/wiki/Equivalence_relation equivalence
relation]:
* It is reflexive: for any instance x
of type Any
, x.equals(x)
should return true
.
* It is symmetric: for any instances x
and y
of type Any
, x.equals(y)
should return true
if and
only if y.equals(x)
returns true
.
* It is transitive: for any instances x
, y
, and z
of type AnyRef
if x.equals(y)
returns true
and
y.equals(z)
returns true
, then x.equals(z)
should return true
.
If you override this method, you should verify that your implementation remains an equivalence relation.
Additionally, when overriding this method it is often necessary to override hashCode
to ensure that objects
that are "equal" (o1.equals(o2)
returns true
) hash to the same
scala.Int
(o1.hashCode.equals(o2.hashCode)
).
the object to compare against this object for equality.
true
if the receiver object is equivalent to the argument; false
otherwise.
Converts this to a Throw if the predicate does not obtain.
Converts this to a Throw if the predicate does not obtain.
This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.
This method is called by the garbage collector on the receiver object when garbage collection determines that there are no more references to the object.
The details of when and if the finalize
method are invoked, as well as the interaction between finalize
and non-local returns and exceptions, are all platform dependent.
Returns the given function applied to the value from this Return or returns this if this is a Throw.
Returns the given function applied to the value from this Return or returns this if this is a Throw.
Note The gnarly type parameterization is there for Java compatibility, since Java does not support higher-kinded types.
Invoke the callback only if the Future returns sucessfully.
Demands that the result of the future be available within timeout
.
Demands that the result of the future be available within timeout
. The result
is a Return[_] or Throw[_] depending upon whether the computation finished in
time.
Returns the value from this Return or throws the exception if this is a Throw.
Returns the value from this Return or throws the exception if this is a Throw. Alias for apply()
Returns a representation that corresponds to the dynamic class of the receiver object.
Returns a representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
Returns the value from this Return or the given argument if this is a Throw.
Returns the value from this Return or the given argument if this is a Throw.
Calls the exceptionHandler with the exception if this is a Throw.
Calls the exceptionHandler with the exception if this is a Throw. This is like map for the exception.
Returns a hash code value for the object.
Returns a hash code value for the object.
The default hashing algorithm is platform dependent.
Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)
) yet
not be equal (o1.equals(o2)
returns false
). A degenerate implementation could always return 0
.
However, it is required that if two objects are equal (o1.equals(o2)
returns true
) that they have
identical hash codes (o1.hashCode.equals(o2.hashCode)
). Therefore, when overriding this method, be sure
to verify that the behavior is consistent with the equals
method.
the hash code value for the object.
Is the result of the Future available yet?
Is the result of the Future available yet?
This method is used to test whether the dynamic type of the receiver object is T0
.
This method is used to test whether the dynamic type of the receiver object is T0
.
Note that the test result of the test is modulo Scala's erasure semantics. Therefore the expression1.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 requested typed.
true
if the receiver object is an instance of erasure of type T0
; false
otherwise.
Returns true if the Try is a Return, false otherwise.
Returns true if the Try is a Throw, false otherwise.
Combines two Futures into one Future of the Tuple of the two results.
Combines two Futures into one Future of the Tuple of the two results.
Maps the given function to the value from this Return or returns this if this is a Throw
Maps the given function to the value from this Return or returns this if this is a Throw
o.ne(arg0)
is the same as !(o.eq(arg0))
.
o.ne(arg0)
is the same as !(o.eq(arg0))
.
the object to compare against this object for reference dis-equality.
false
if the argument is not a reference to the receiver object; true
otherwise.
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.
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.
Invoke the funciton on the error, if the computation was unsuccessful.
Invoke the funciton on the error, if the computation was unsuccessful. Returnsthis
to allow for a fluent API. This function is like foreach
but for the error
case. It also differs from foreach
in that it returns this
.
See rescue
and handle
for a less imperative API.
this
Invoke the function on the result, if the computation was successful.
A synonym for select(): Choose the first Future to succeed.
A synonym for select(): Choose the first Future to succeed.
Send updates from this Future to the other.
Send updates from this Future to the other.
Calls the exceptionHandler with the exception if this is a Throw.
Calls the exceptionHandler with the exception if this is a Throw. This is like flatMap for the exception.
Note The gnarly type parameterization is there for Java compatibility, since Java does not support higher-kinded types.
When the computation completes, invoke the given callback function.
When the computation completes, invoke the given callback function. Respond() yields a Try (either a Return or a Throw). This method is most useful for very generic code (like libraries). Otherwise, it is a best practice to use one of the alternatives (onSuccess(), onFailure(), etc.). Note that almost all methods on Future[_] are written in terms of respond(), so this is the essential template method for use in concrete subclasses.
Note: respond *should* enforce strong ordering. That is, calling respond(k) then respond(j) should guarantee that when the computation completes, k is called before j.
Choose the first Future to succeed.
Choose the first Future to succeed.
another Future
a new Future whose result is that of the first of this and other to return
Returns None if this is a Throw or a Some containing the value if this is a Return
Returns None if this is a Throw or a Some containing the value if this is a Return
Returns a string representation of the object.
Returns a string representation of the object.
The default representation is platform dependent.
a string representation of the object.
Convert this Future[A] to a Future[Unit] by discarding the result.
Convert this Future[A] to a Future[Unit] by discarding the result.
Returns a new Future that will error if this Future does not return in time.
Returns a new Future that will error if this Future does not return in time.
indicates how long you are willing to wait for the result to be available.
Same as the other within, but with an implict timer.
Same as the other within, but with an implict timer. Sometimes this is more convenient.
A computation evaluated asynchronously. This implementation of Future does not assume any concrete implementation; in particular, it does not couple the user to a specific executor or event loop.
Note that this class extends Try[_] indicating that the results of the computation may succeed or fail.