t

cats

EvalGroup 

trait EvalGroup[A] extends Group[Eval[A]] with EvalMonoid[A]

Ordering
1. Alphabetic
2. By Inheritance
Inherited
1. EvalGroup
2. EvalMonoid
3. EvalSemigroup
4. Group
5. Monoid
6. Semigroup
7. Serializable
8. Serializable
9. AnyRef
10. Any
1. Hide All
2. Show All
Visibility
1. Public
2. All

Abstract Value Members

1. implicit abstract def algebra: Group[A]
Definition Classes
EvalGroupEvalMonoidEvalSemigroup

Concrete Value Members

1. final def !=(arg0: Any)
Definition Classes
AnyRef → Any
2. final def ##(): Int
Definition Classes
AnyRef → Any
3. final def ==(arg0: Any)
Definition Classes
AnyRef → Any
4. final def asInstanceOf[T0]: T0
Definition Classes
Any
5. def clone()
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( ... ) @native() @IntrinsicCandidate()
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
EvalSemigroupSemigroup
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
MonoidSemigroup
9. def combineN(a: Eval[A], n: Int): Eval[A]

Return `a` appended to itself `n` times.

Return `a` appended to itself `n` times. If `n` is negative, then this returns `inverse(a)` appended to itself `n` times.

Definition Classes
GroupMonoidSemigroup
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
EvalMonoidMonoid
11. final def eq(arg0: AnyRef)
Definition Classes
AnyRef
12. def equals(arg0: Any)
Definition Classes
AnyRef → Any
13. final def getClass(): Class[_]
Definition Classes
AnyRef → Any
Annotations
@native() @IntrinsicCandidate()
14. def hashCode(): Int
Definition Classes
AnyRef → Any
Annotations
@native() @IntrinsicCandidate()
15. 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
16. def inverse(lx: Eval[A]): Eval[A]

Find the inverse of `a`.

Find the inverse of `a`.

`combine(a, inverse(a))` = `combine(inverse(a), a)` = `empty`.

Example:

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

scala> Group[Int].inverse(5)
res0: Int = -5```
Definition Classes
EvalGroupGroup
17. def isEmpty(a: Eval[A])(implicit ev: kernel.Eq[Eval[A]])

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]
Definition Classes
Any
19. final def ne(arg0: AnyRef)
Definition Classes
AnyRef
20. final def notify(): Unit
Definition Classes
AnyRef
Annotations
@native() @IntrinsicCandidate()
21. final def notifyAll(): Unit
Definition Classes
AnyRef
Annotations
@native() @IntrinsicCandidate()
22. def remove(lx: Eval[A], ly: Eval[A]): Eval[A]

Remove the element `b` from `a`.

Remove the element `b` from `a`.

Equivalent to `combine(a, inverse(b))`

Example:

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

scala> Group[Int].remove(5, 2)
res0: Int = 3```
Definition Classes
EvalGroupGroup
23. 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
24. 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
MonoidSemigroup
25. final def synchronized[T0](arg0: ⇒ T0): T0
Definition Classes
AnyRef
26. def toString(): String
Definition Classes
AnyRef → Any
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()
29. final def wait(): Unit
Definition Classes
AnyRef
Annotations
@throws( ... )

Deprecated Value Members

1. def finalize(): Unit
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] ) @Deprecated
Deprecated