< Back

Packages

package root
Definition Classes
root
package cats
The cats root package contains all the trait signatures of most Scala type classes.
The cats root package contains all the trait signatures of most Scala type classes.
Cats type classes are implemented using the approach from the Type classes as objects and implicits article.
For each type class, cats provides three pieces: - Its signature: a trait that is polymorphic on a type parameter. Type class traits inherit from other type classes to indicate that any implementation of the lower type class (e.g. Applicative) can also serve as an instance for the higuer type class (e.g. Functor). - Type class 'instances, which are classes and objects that implement one or more type class signatures for some specific types. Type class instances for several data types from the Java or Scala standard libraries are declared in the subpackage cats.instances. - Syntax extensions, each of which provides the methods of the type class defines as extension methods (which in Scala 2 are encoded as implicit classes) for values of any type F; given that an instance of the type class for the receiver type (this) is in the implicit scope. Symtax extensions are declared in the cats.syntax package. - A set of laws, that are also generic on the type of the class, and are only defined on the operations of the type class. The purpose of these laws is to declare some algebraic relations (equations) between Scala expressions involving the operations of the type class, and test (but not verify) that implemented instances satisfy those equations. Laws are defined in the cats-laws package.
Although most of cats type classes are declared in this package, some are declared in other packages: - type classes that operate on base types (kind *), and their implementations for standard library types, are contained in cats.kernel, which is a different SBT project. However, they are re-exported from this package. - type classes of kind F[_, _], such as cats.arrow.Profunctor" or cats.arrow.Arrow, which are relevant for Functional Reactive Programming or optics, are declared in the cats.arrow package. - Also, those type classes that abstract over (pure or impure) functional runtime effects are declared in the cats-effect library. - Some type classes for which no laws can be provided are left out of the main road, in a small and dirty alley. These are the alleycats.
Definition Classes
root
package laws
Definition Classes
cats
package discipline
Definition Classes
laws
AlignTests
AlternativeTests
ApplicativeErrorTests
ApplicativeTests
ApplyTests
ArrowChoiceTests
ArrowTests
BifoldableTests
BifunctorTests
BimonadTests
BitraverseTests
CategoryTests
ChoiceTests
CoflatMapTests
CommutativeApplicativeTests
CommutativeApplyTests
CommutativeArrowTests
CommutativeFlatMapTests
CommutativeMonadTests
ComonadTests
ComposeTests
ContravariantMonoidalTests
ContravariantSemigroupalTests
ContravariantTests
DeferTests
DeprecatedEqInstances
DistributiveTests
ExhaustiveCheck
FlatMapTests
FoldableTests
FunctorFilterTests
FunctorTests
InjectKTests
InjectTests
InvariantMonoidalTests
InvariantSemigroupalTests
InvariantTests
MiniInt
MonadErrorTests
MonadTests
MonoidKTests
NonEmptyAlternativeTests
NonEmptyParallelTests
NonEmptyTraverseTests
ParallelTests
ProfunctorTests
ReducibleTests
RepresentableTests
SemigroupKTests
SemigroupalTests
ShortCircuitingTests
StrongTests
TraverseFilterTests
TraverseTests
UnorderedFoldableTests
UnorderedTraverseTests
arbitrary
eq

cats.laws.discipline

ExhaustiveCheck

Companion trait ExhaustiveCheck

object ExhaustiveCheck extends Serializable

Source: ExhaustiveCheck.scala

Linear Supertypes

Serializable, AnyRef, Any

Ordering

Alphabetic
By Inheritance

Inherited

ExhaustiveCheck
Serializable
AnyRef
Any

Hide All
Show All

Visibility

Public
Protected

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
def apply[A](implicit A: ExhaustiveCheck[A]): ExhaustiveCheck[A]
final def asInstanceOf[T0]: T0
Definition Classes
Any
implicit val catsLawsExhaustiveCheckForBoolean: ExhaustiveCheck[Boolean]
implicit def catsLawsExhaustiveCheckForEither[A, B](implicit A: ExhaustiveCheck[A], B: ExhaustiveCheck[B]): ExhaustiveCheck[Either[A, B]]
implicit def catsLawsExhaustiveCheckForOption[A](implicit A: ExhaustiveCheck[A]): ExhaustiveCheck[Option[A]]
implicit val catsLawsExhaustiveCheckForSetBoolean: ExhaustiveCheck[Set[Boolean]]
implicit def catsLawsExhaustiveCheckForTuple2[A, B](implicit A: ExhaustiveCheck[A], B: ExhaustiveCheck[B]): ExhaustiveCheck[(A, B)]
Warning: the domain of (A, B) is the cross-product of the domain of A and the domain of B.
implicit def catsLawsExhaustiveCheckForTuple3[A, B, C](implicit A: ExhaustiveCheck[A], B: ExhaustiveCheck[B], C: ExhaustiveCheck[C]): ExhaustiveCheck[(A, B, C)]
Warning: the domain of (A, B, C) is the cross-product of the 3 domains.
def clone(): AnyRef
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
final def eq(arg0: AnyRef): Boolean
Definition Classes
AnyRef
def equals(arg0: AnyRef): Boolean
Definition Classes
AnyRef → Any
def finalize(): Unit
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
def forSet[A](implicit A: ExhaustiveCheck[A]): ExhaustiveCheck[Set[A]]
Creates an ExhaustiveCheck[Set[A]] given an ExhaustiveCheck[A] by computing the powerset of values.
Creates an ExhaustiveCheck[Set[A]] given an ExhaustiveCheck[A] by computing the powerset of values. Note that if there are n elements in the domain of A there will be 2^n elements in the domain of Set[A], so use this only on small domains.
final def getClass(): Class[_ <: AnyRef]
Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int
Definition Classes
AnyRef → Any
Annotations
@native()
def instance[A](values: List[A]): ExhaustiveCheck[A]
final def isInstanceOf[T0]: Boolean
Definition Classes
Any
final def ne(arg0: AnyRef): Boolean
Definition Classes
AnyRef
final def notify(): Unit
Definition Classes
AnyRef
Annotations
@native()
final def notifyAll(): Unit
Definition Classes
AnyRef
Annotations
@native()
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(classOf[java.lang.InterruptedException])
final def wait(arg0: Long, arg1: Int): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped