EitherSemigroup

Either semigroup is useful for error handling. if everything is correct, use Right (it's right, get it?), if something goes wrong, use Left. plus does the normal thing for plus(Right, Right), or plus(Left, Left), but if exactly one is Left, we return that value (to keep the error condition). Typically, the left value will be a string representing the errors.

Linear Supertypes

Semigroup[Either[L, R]], Serializable, AnyRef, Any

Known Subclasses

EitherMonoid

Instance Constructors

new EitherSemigroup()(implicit semigroupl: Semigroup[L], semigroupr: Semigroup[R])

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def plus(l: Either[L, R], r: Either[L, R]): Either[L, R]

Definition Classes
EitherSemigroup → Semigroup
def sumOption(iter: TraversableOnce[Either[L, R]]): Option[Either[L, R]]

override this if there is a faster way to do this sum than reduceLeftOption on plus
override this if there is a faster way to do this sum than reduceLeftOption on plus

Definition Classes
Semigroup
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package algebird

class EitherSemigroup[L, R] extends Semigroup[Either[L, R]]

Instance Constructors

new EitherSemigroup()(implicit semigroupl: Semigroup[L], semigroupr: Semigroup[R])

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def plus(l: Either[L, R], r: Either[L, R]): Either[L, R]

def sumOption(iter: TraversableOnce[Either[L, R]]): Option[Either[L, R]]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Semigroup[Either[L, R]]

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped