LeftProjection
Projects an Either into a Left.
- See also
- Source
- Either.scala
Value members
Concrete methods
Returns false if Right or returns the result of the application of
the given function to the Left value.
Left(12).left.exists(_ > 10) // true
Left(7).left.exists(_ > 10) // false
Right(12).left.exists(_ > 10) // false- Source
- Either.scala
Returns None if this is a Right or if the given predicate
p does not hold for the left value, otherwise, returns a Left.
Left(12).left.filterToOption(_ > 10) // Some(Left(12))
Left(7).left.filterToOption(_ > 10) // None
Right(12).left.filterToOption(_ > 10) // None- Source
- Either.scala
Binds the given function across Left.
Left(12).left.flatMap(x => Left("scala")) // Left("scala")
Right(12).left.flatMap(x => Left("scala")) // Right(12)- Value Params
- f
The function to bind across
Left.
- Source
- Either.scala
Returns true if Right or returns the result of the application of
the given function to the Left value.
Left(12).left.forall(_ > 10) // true
Left(7).left.forall(_ > 10) // false
Right(12).left.forall(_ > 10) // true- Source
- Either.scala
Executes the given side-effecting function if this is a Left.
Left(12).left.foreach(x => println(x)) // prints "12"
Right(12).left.foreach(x => println(x)) // doesn't print- Value Params
- f
The side-effecting function to execute.
- Source
- Either.scala
Returns the value from this Left or the given argument if this is a Right.
Left(12).left.getOrElse(17) // 12
Right(12).left.getOrElse(17) // 17- Source
- Either.scala
Maps the function argument through Left.
Left(12).left.map(_ + 2) // Left(14)
Right[Int, Int](12).left.map(_ + 2) // Right(12)- Source
- Either.scala
Returns a Some containing the Left value if it exists or a
None if this is a Right.
Left(12).left.toOption // Some(12)
Right(12).left.toOption // None- Source
- Either.scala
Returns a Seq containing the Left value if it exists or an empty
Seq if this is a Right.
Left(12).left.toSeq // Seq(12)
Right(12).left.toSeq // Seq()- Source
- Either.scala
Deprecated methods
Returns None if this is a Right or if the given predicate
p does not hold for the left value, otherwise, returns a Left.
Left(12).left.filter(_ > 10) // Some(Left(12))
Left(7).left.filter(_ > 10) // None
Right(12).left.filter(_ > 10) // None- Deprecated
- Source
- Either.scala
Returns the value from this Left or throws NoSuchElementException
if this is a Right.
Left(12).left.get // 12
Right(12).left.get // NoSuchElementException- Throws
- NoSuchElementException
if the projection is scala.util.Right
- Deprecated
- Source
- Either.scala
Inherited methods
An iterator over the names of all the elements of this product.
- Inherited from
- Product
- Source
- Product.scala
An iterator over all the elements of this product.
- Returns
in the default implementation, an
Iterator[Any]- Inherited from
- Product
- Source
- Product.scala