sealed
trait
Eff[R, A] extends AnyRef
Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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def
ap[B](f: Eff[R, (A) ⇒ B]): Eff[R, B]
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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-
-
def
finalize(): Unit
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def
flatMap[B](f: (A) ⇒ Eff[R, B]): Eff[R, B]
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def
flatten[B](implicit ev: =:=[A, Eff[R, B]]): Eff[R, B]
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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def
map[B](f: (A) ⇒ B): Eff[R, B]
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
Effects of type R, returning a value of type A
It is implemented as a "Free-er" monad with extensible effects:
ArrstypeThe monad implementation for this type is really simple:
pointis Purebindsimply appends the binding function to theArrscontinuationImportant:
The list of continuations is NOT implemented as a type sequence but simply as a Vector[Any => Eff[R, Any]]
This means that various
.asInstanceOfare present in the implementation and could lead to burns and severe harm. Use with caution!http://okmij.org/ftp/Haskell/extensible/more.pdf