EvalGroup

trait EvalGroup[A] extends Group[Eval[A]] with EvalMonoid[A]
trait EvalMonoid[A]
trait EvalSemigroup[A]
trait Group[Eval[A]]
trait Monoid[Eval[A]]
trait Semigroup[Eval[A]]
trait Serializable
class Object
trait Matchable
class Any

Value members

Concrete methods

def inverse(lx: Eval[A]): Eval[A]
override def remove(lx: Eval[A], ly: Eval[A]): Eval[A]
Definition Classes
Group

Inherited methods

def combine(lx: Eval[A], ly: Eval[A]): Eval[A]
Inherited from
EvalSemigroup
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 = ""
Inherited from
Monoid
override def combineAllOption(as: IterableOnce[Eval[A]]): Option[Eval[A]]
Definition Classes
Monoid -> Semigroup
Inherited from
Monoid
override def combineN(a: Eval[A], n: Int): Eval[A]

Return a appended to itself n times. If n is negative, then this returns inverse(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
Group -> Monoid -> Semigroup
Inherited from
Group
def intercalate(middle: Eval[A]): 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.

Inherited from
Semigroup
def isEmpty(a: Eval[A])(ev: 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
Inherited from
Monoid
override def reverse: Monoid[Eval[A]]
Definition Classes
Monoid -> Semigroup
Inherited from
Monoid

Inherited fields

lazy val empty: Eval[A]
Inherited from
EvalMonoid

Implicits

Implicits

implicit def algebra: Group[A]