Class

cats.kernel.instances

OptionMonoid

Related Doc: package instances

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class OptionMonoid[A] extends Monoid[Option[A]]

Linear Supertypes
Monoid[Option[A]], Semigroup[Option[A]], Serializable, Serializable, AnyRef, Any
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Inherited
  1. OptionMonoid
  2. Monoid
  3. Semigroup
  4. Serializable
  5. Serializable
  6. AnyRef
  7. Any
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Visibility
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Instance Constructors

  1. new OptionMonoid()(implicit A: Semigroup[A])

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  6. def combine(x: Option[A], y: Option[A]): Option[A]

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    Associative operation which combines two values.

    Associative operation which combines two values.

    Definition Classes
    OptionMonoid → Semigroup

  7. def combineAll(as: TraversableOnce[Option[A]]): Option[A]

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    Given a sequence of as, sum them using the monoid and return the total.

    Given a sequence of as, sum them using the monoid and return the total.

    Definition Classes
    Monoid

  8. def combineAllOption(as: TraversableOnce[Option[A]]): Option[Option[A]]

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    Given a sequence of as, combine them and return the total.

    Given a sequence of as, combine them and return the total.

    If the sequence is empty, returns None. Otherwise, returns Some(total).

    Definition Classes
    Monoid → Semigroup

  9. def combineN(a: Option[A], n: Int): Option[A]

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    Return a appended to itself n times.

    Return a appended to itself n times.

    Definition Classes
    Monoid → Semigroup

  10. def empty: Option[A]

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    Return the identity element for this monoid.

    Return the identity element for this monoid.

    Definition Classes
    OptionMonoid → Monoid

  11. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  12. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  13. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  14. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any

  15. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  16. def isEmpty(a: Option[A])(implicit ev: Eq[Option[A]]): Boolean

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    Tests if a is the identity.

    Tests if a is the identity.

    Definition Classes
    Monoid

  17. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  18. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  19. final def notify(): Unit

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    Definition Classes
    AnyRef

  20. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  21. def repeatedCombineN(a: Option[A], n: Int): Option[A]

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    Return a combined with itself more than once.

    Return a combined with itself more than once.

    Attributes
    protected[this]
    Definition Classes
    Semigroup

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

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    Definition Classes
    AnyRef

  23. def toString(): String

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    Definition Classes
    AnyRef → Any

  24. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  26. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Monoid[Option[A]]

Inherited from Semigroup[Option[A]]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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