LeftProjection
Projects an Either into a Left.
Attributes
- See also
- Source
- Either.scala
- Graph
-
- Supertypes
Members list
Value members
Concrete methods
Returns false if Right or returns the result of the application of the given function to the Left value.
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
Attributes
- 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.
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
Attributes
- Source
- Either.scala
Binds the given function across Left.
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 parameters
- f
-
The function to bind across
Left.
Attributes
- Source
- Either.scala
Returns true if Right or returns the result of the application of the given function to the Left value.
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
Attributes
- Source
- Either.scala
Executes the given side-effecting function if this is a Left.
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 parameters
- f
-
The side-effecting function to execute.
Attributes
- Source
- Either.scala
Returns the value from this Left or the given argument if this is a Right.
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
Attributes
- Source
- Either.scala
Maps the function argument through Left.
Maps the function argument through Left.
Left(12).left.map(_ + 2) // Left(14)
Right[Int, Int](12).left.map(_ + 2) // Right(12)
Attributes
- Source
- Either.scala
Returns a Some containing the Left value if it exists or a None if this is a Right.
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
Attributes
- Source
- Either.scala
Returns a Seq containing the Left value if it exists or an empty Seq if this is a Right.
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()
Attributes
- 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.
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
Attributes
- Deprecated
- true
- Source
- Either.scala
Returns the value from this Left or throws NoSuchElementException if this is a Right.
Returns the value from this Left or throws NoSuchElementException if this is a Right.
Left(12).left.get // 12
Right(12).left.get // NoSuchElementException
Attributes
- Throws
-
NoSuchElementException if the projection is scala.util.Right
- Deprecated
- true
- Source
- Either.scala
Inherited methods
An iterator over the names of all the elements of this product.
An iterator over the names of all the elements of this product.
Attributes
- Inherited from:
- Product
- Source
- Product.scala
An iterator over all the elements of this product.
An iterator over all the elements of this product.
Attributes
- Returns
-
in the default implementation, an
Iterator[Any] - Inherited from:
- Product
- Source
- Product.scala