Packages

t

cats

EvalMonoid

trait EvalMonoid[A] extends Monoid[Eval[A]] with EvalSemigroup[A]

Source
Eval.scala
Linear Supertypes
EvalSemigroup[A], kernel.Monoid[Eval[A]], kernel.Semigroup[Eval[A]], Serializable, Serializable, AnyRef, Any
Known Subclasses
EvalGroup
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. EvalMonoid
  2. EvalSemigroup
  3. Monoid
  4. Semigroup
  5. Serializable
  6. Serializable
  7. AnyRef
  8. Any
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. implicit abstract def algebra: Monoid[A]
    Definition Classes
    EvalMonoid → EvalSemigroup

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  6. def combine(lx: Eval[A], ly: Eval[A]): Eval[A]

    Associative operation which combines two values.

    Associative operation which combines two values.

    Example:

    scala> import cats.kernel.instances.string._
scala> import cats.kernel.instances.int._
scala> import cats.kernel.instances.option._

scala> Semigroup[String].combine("Hello ", "World!")
res0: String = Hello World!

scala> Semigroup[Option[Int]].combine(None, Some(1))
res1: Option[Int] = Some(1)
    Definition Classes
    EvalSemigroup → Semigroup
  7. def combineAll(as: IterableOnce[Eval[A]]): Eval[A]

    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.

    Example:

    scala> import cats.kernel.instances.string._

scala> Monoid[String].combineAll(List("One ", "Two ", "Three"))
res0: String = One Two Three

scala> Monoid[String].combineAll(List.empty)
res1: String = ""
    Definition Classes
    Monoid
  8. def combineAllOption(as: IterableOnce[Eval[A]]): Option[Eval[A]]

    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).

    Example:

    scala> import cats.kernel.instances.string._

scala> Semigroup[String].combineAllOption(List("One ", "Two ", "Three"))
res0: Option[String] = Some(One Two Three)

scala> Semigroup[String].combineAllOption(List.empty)
res1: Option[String] = None
    Definition Classes
    Monoid → Semigroup
  9. def combineN(a: Eval[A], n: Int): Eval[A]

    Return a appended to itself n times.

    Return a appended to itself n times.

    Example:

    scala> import cats.kernel.instances.string._

scala> Monoid[String].combineN("ha", 3)
res0: String = hahaha

scala> Monoid[String].combineN("ha", 0)
res1: String = ""
    Definition Classes
    Monoid → Semigroup
  10. lazy val empty: Eval[A]

    Return the identity element for this monoid.

    Return the identity element for this monoid.

    Example:

    scala> import cats.kernel.instances.int._
scala> import cats.kernel.instances.string._

scala> Monoid[String].empty
res0: String = ""

scala> Monoid[Int].empty
res1: Int = 0
    Definition Classes
    EvalMonoid → Monoid
  11. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  13. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  14. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  16. def intercalate(middle: Eval[A]): kernel.Semigroup[Eval[A]]

    Between each pair of elements insert middle This name matches the term used in Foldable and Reducible and a similar Haskell function.

    Between each pair of elements insert middle This name matches the term used in Foldable and Reducible and a similar Haskell function.

    Definition Classes
    Semigroup
  17. def isEmpty(a: Eval[A])(implicit ev: kernel.Eq[Eval[A]]): Boolean

    Tests if a is the identity.

    Tests if a is the identity.

    Example:

    scala> import cats.kernel.instances.string._

scala> Monoid[String].isEmpty("")
res0: Boolean = true

scala> Monoid[String].isEmpty("something")
res1: Boolean = false
    Definition Classes
    Monoid
  18. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  19. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  22. def repeatedCombineN(a: Eval[A], n: Int): Eval[A]

    Return a combined with itself more than once.

    Return a combined with itself more than once.

    Attributes
    protected[this]
    Definition Classes
    Semigroup
  23. def reverse: kernel.Monoid[Eval[A]]

    return a semigroup that reverses the order so combine(a, b) == reverse.combine(b, a)

    return a semigroup that reverses the order so combine(a, b) == reverse.combine(b, a)

    Definition Classes
    Monoid → Semigroup
  24. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  25. def toString(): String
    Definition Classes
    AnyRef → Any
  26. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  28. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from EvalSemigroup[A]

Inherited from kernel.Monoid[Eval[A]]

Inherited from kernel.Semigroup[Eval[A]]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped