Scala Library
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scala/Either.scala
]
case final
class
RightProjection[+A, +B](val
e : Either[A, B])
extends
ProductEither
into a Right
.Method Summary | |
override def
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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. See Programming in Scala,
Chapter 28 for discussion and design.
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override def
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equals
(arg0 : Any) : Boolean
The equality method defined in `AnyRef`.
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def
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exists
(f : (B) => Boolean) : Boolean
Returns
false if Left or returns the result of the application of
the given function to the Right value. |
def
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filter
[X](p : (B) => Boolean) : Option[Either[X, B]]
Returns
None if this is a Left or if the
given predicate p does not hold for the right value,
otherwise, returns a Right . |
def
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flatMap
[AA >: A, Y](f : (B) => Either[AA, Y]) : Either[AA, Y]
Binds the given function across
Right . |
def
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forall
(f : (B) => Boolean) : Boolean
Returns
true if Left or returns the result of the application of
the given function to the Right value. |
def
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foreach
[U](f : (B) => U) : Any
Executes the given side-effect if this is a
Right . |
def
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get
: B
Returns the value from this
Right or throws
Predef.NoSuchElementException if this is a Left . |
def
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getOrElse
[BB >: B](or : => BB) : BB
Returns the value from this
Right or the given argument if this is a
Left . |
override def
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hashCode
: Int
Returns a hash code value for the object.
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def
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map
[Y](f : (B) => Y) : Product with Either[A, Y]
Maps the function argument through
Right . |
override def
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productArity
: Int
return k for a product
A(x_1,...,x_k) |
override def
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productElement
(arg0 : Int) : Any
for a product
A(x_1,...,x_k) , returns x_(n+1)
for 0 <= n < k |
override def
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productPrefix
: java.lang.String
By default the empty string. Implementations may override this
method in order to prepend a string prefix to the result of the
toString methods.
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def
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toOption
: Option[B]
Returns a
Some containing the Right value
if it exists or a None if this is a Left . |
def
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toSeq
: Seq[B]
Returns a
Seq containing the Right value if
it exists or an empty Seq if this is a Left . |
override def
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toString
: java.lang.String
Returns a string representation of the object.
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Methods inherited from Product | |
productIterator, productElements |
Methods inherited from AnyRef | |
getClass, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized |
Methods inherited from Any | |
==, !=, isInstanceOf, asInstanceOf |
Method Details |
def
get : B
Right
or throws
Predef.NoSuchElementException
if this is a Left
.Left
.Right
.e -
The side-effect to execute.Right
or the given argument if this is a
Left
.true
if Left
or returns the result of the application of
the given function to the Right
value.false
if Left
or returns the result of the application of
the given function to the Right
value.Right
.The -
function to bind across Right
.Right
.None
if this is a Left
or if the
given predicate p
does not hold for the right value,
otherwise, returns a Right
.Seq
containing the Right
value if
it exists or an empty Seq
if this is a Left
.Some
containing the Right
value
if it exists or a None
if this is a Left
.override
def
hashCode : Int
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.
override
def
toString : java.lang.String
The default representation is platform dependent.
override
def
productPrefix : java.lang.String
override
def
productArity : Int
A(x_1,...,x_k)
A(x_1,...,x_k)
, returns x_(n+1)
for 0 <= n < k
n -
the index of the element to returnIndexOutOfBoundsException -
n
elements after the first element
Scala Library
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