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trait Functor[Context[_]] extends AnyRef

Typeclass trait representing an algebraic structure defined by a map method that obeys laws of identity and composition.

The identity law states that given a value ca of type Context[A] and the identity function, (a: A) => a (and implicit Functor.adapters imported):

ca.map((a: A) => a) === ca

The composition law states that given a value ca of type Context[A] and two functions, f of type A => B and g of type B => C (and implicit Functor.adapters imported):

ca.map(f).map(g) === ca.map(g compose f)

Source
Functor.scala
Linear Supertypes
AnyRef, Any
Known Subclasses
Applicative, Monad
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Abstract Value Members

  1. abstract def map[A, B](ca: Context[A])(f: (A) ⇒ B): Context[B]

    Applies the given function to the given value in context, returning the result in the context.

    Applies the given function to the given value in context, returning the result in the context.

    See the main documentation for this trait for more detail.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
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  8. def finalize(): Unit
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    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]
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  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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  15. final def synchronized[T0](arg0: ⇒ T0): T0
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  16. def toString(): String
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  17. final def wait(): Unit
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  18. final def wait(arg0: Long, arg1: Int): Unit
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  19. final def wait(arg0: Long): Unit
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