Returnsfalse ifRight or returns the result of the application of the given function to theLeft value.

Left(12).left.exists(_ > 10)  // trueLeft(7).left.exists(_ > 10)   // falseRight(12).left.exists(_ > 10) // false

Attributes

Source

Either.scala

ReturnsNone if this is aRight or if the given predicatep does not hold for the left value, otherwise, returns aLeft.

Left(12).left.filterToOption(_ > 10)  // Some(Left(12))Left(7).left.filterToOption(_ > 10)   // NoneRight(12).left.filterToOption(_ > 10) // None

Attributes

Source

Either.scala

Binds the given function acrossLeft.

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 acrossLeft.

Attributes

Source

Either.scala

Returnstrue ifRight or returns the result of the application of the given function to theLeft value.

Left(12).left.forall(_ > 10)  // trueLeft(7).left.forall(_ > 10)   // falseRight(12).left.forall(_ > 10) // true

Attributes

Source

Either.scala

Executes the given side-effecting function if this is aLeft.

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 thisLeft or the given argument if this is aRight.

Left(12).left.getOrElse(17)  // 12Right(12).left.getOrElse(17) // 17

Attributes

Source

Either.scala

Maps the function argument throughLeft.

Left(12).left.map(_ + 2) // Left(14)Right[Int, Int](12).left.map(_ + 2) // Right(12)

Attributes

Source

Either.scala

Returns aSome containing theLeft value if it exists or aNone if this is aRight.

Left(12).left.toOption // Some(12)Right(12).left.toOption // None

Attributes

Source

Either.scala

Returns aSeq containing theLeft value if it exists or an emptySeq if this is aRight.

Left(12).left.toSeq // Seq(12)Right(12).left.toSeq // Seq()

Attributes

Source

Either.scala

ReturnsNone if this is aRight or if the given predicatep does not hold for the left value, otherwise, returns aLeft.

Left(12).left.filter(_ > 10)  // Some(Left(12))Left(7).left.filter(_ > 10)   // NoneRight(12).left.filter(_ > 10) // None

Attributes

Deprecated

[Since version 2.13.0]Use `filterToOption`, which more accurately reflects the return type

Source

Either.scala

Returns the value from thisLeft or throwsNoSuchElementException if this is aRight.

Left(12).left.get  // 12Right(12).left.get // NoSuchElementException

Attributes

Throws

NoSuchElementExceptionif the projection isscala.util.Right

Deprecated

[Since version 2.13.0]use `Either.swap.getOrElse` instead

Source

Either.scala

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.

Attributes

Returns

in the default implementation, anIterator[Any]

Inherited from:

Product

Source

Product.scala