Scala Library
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scala/Either.scala
]
case final
class
LeftProjection[+A, +B](val
e : Either[A, B])
extends
ProductEither
into a Left
.Method Summary | |
override def
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equals (arg0 : Any) : Boolean |
def
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exists
(f : (A) => Boolean) : Boolean
Returns
false if Right or returns the result of the application of
the given function to the Left value. |
def
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filter
[Y](p : (A) => Boolean) : Option[Either[A, Y]]
Returns
None if this is a Right or if the given predicate
p does not hold for the left value, otherwise, returns a Left . |
def
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flatMap
[BB >: B, X](f : (A) => Either[X, BB]) : Either[X, BB]
Binds the given function across
Left . |
def
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forall
(f : (A) => Boolean) : Boolean
Returns
true if Right or returns the result of the application of
the given function to the Left value. |
def
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foreach
(f : (A) => Unit) : Unit
Executes the given side-effect if this is a
Left . |
def
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get
: A
Returns the value from this
Left or throws Predef.NoSuchElementException
if this is a Right . |
def
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getOrElse
[AA >: A](or : => AA) : AA
Returns the value from this
Left or the given argument if this is a
Right . |
override def
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hashCode : Int |
def
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map
[X](f : (A) => X) : Either[X, B] with Product
Maps the function argument through
Left . |
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[A]
Returns a
Some containing the Left value if it exists or a
None if this is a Right . |
def
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toSeq
: Seq[A]
Returns a
Seq containing the Left value if it exists or an empty
Seq if this is a Right . |
override def
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toString : java.lang.String |
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 : A
Left
or throws Predef.NoSuchElementException
if this is a Right
.Left
.e -
The side-effect to execute.Left
or the given argument if this is a
Right
.true
if Right
or returns the result of the application of
the given function to the Left
value.false
if Right
or returns the result of the application of
the given function to the Left
value.Left
.The -
function to bind across Left
.Left
.None
if this is a Right
or if the given predicate
p
does not hold for the left value, otherwise, returns a Left
.Seq
containing the Left
value if it exists or an empty
Seq
if this is a Right
.Some
containing the Left
value if it exists or a
None
if this is a Right
.override
def
hashCode : Int
override
def
toString : java.lang.String
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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