trait Comonad[F[_]] extends Serializable with Type[F]
The Comonad type-class is the dual of Monad. Whereas Monads
allow for the composition of effectful functions, Comonads allow
for composition of functions that extract the value from their
context.
To implement Comonad:
- inherit from Comonad.Type in derived type-classes
- inherit from Comonad.Instance when implementing instances
The purpose of this type-class is to support the data-types in the Monix library and it is considered a shim for a lawful type-class to be supplied by libraries such as Cats or Scalaz or equivalent.
CREDITS: The type-class encoding has been inspired by the Scato project by Aloïs Cochard and Scalaz 8 and the type has been extracted from Cats.
- Self Type
- Instance[F]
- Source
- Comonad.scala
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This is the API documentation for the Monix library.
Package Overview
monix.execution exposes lower level primitives for dealing with asynchronous execution:
Atomictypes, as alternative tojava.util.concurrent.atomicmonix.eval is for dealing with evaluation of results, thus exposing Task and Coeval.
monix.reactive exposes the
Observablepattern:Observableimplementationsmonix.types implements type-class shims, to be translated to type-classes provided by libraries such as Cats or Scalaz.
monix.cats is the optional integration with the Cats library, providing translations for the types described in
monix.types.monix.scalaz is the optional integration with the Scalaz library, providing translations for the types described in
monix.types.