FutureOption

A monadic wrapper around the common case of Future[Option[A]]. Allows you to use for-comprehensions around Future[Option[A]] without needing to special case each None case.

Example:

val result: Future[Option[Venue]] = (for { user <- FutureOption(services.futureDb.fetchOne(Q(User).where(_.id eqs 32))) tip <- FutureOption(services.futureDb.fetchOne(Q(Tip).where(_.userid eqs user.id))) venue <- FutureOption(services.futureDb.fetchOne(Q(Venue).where(_.id eqs tip.venueid))) if !venue.isHome } yield venue).resolve

Example 2: val sixteenFOpt = FutureOption(Future.value(Some(16))) for { s <- sixteenFOpt } { println(s) } This will output "16".

FutureOption is a value class. http://docs.scala-lang.org/overviews/core/value-classes.html

Linear Supertypes

AnyVal, Any

Instance Constructors

new FutureOption(resolve: Future[Option[A]])

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
Any
final def ==(arg0: Any): Boolean

Definition Classes
Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def filter(f: (A) ⇒ Boolean): FutureOption[A]
def flatMap[T](f: (A) ⇒ FutureOption[T]): FutureOption[T]
def flatten[T](implicit asFutureOption: (A) ⇒ FutureOption[T]): FutureOption[T]
def foreach[T](f: (A) ⇒ Unit): Unit
def getClass(): Class[_ <: AnyVal]

Definition Classes
AnyVal → Any
def getOrElse[B >: A](f: ⇒ Future[B]): Future[B]
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def join[T](other: FutureOption[T]): FutureOption[(A, T)]
def map[T](f: (A) ⇒ T): FutureOption[T]
def orElse[B >: A](f: ⇒ FutureOption[B]): FutureOption[B]
val resolve: Future[Option[A]]
def toString(): String

Definition Classes
Any
def withFilter(f: (A) ⇒ Boolean): FutureOption[A]

Related Docs: object FutureOption | package concurrent

final class FutureOption[+A] extends AnyVal

Instance Constructors

new FutureOption(resolve: Future[Option[A]])

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def filter(f: (A) ⇒ Boolean): FutureOption[A]

def flatMap[T](f: (A) ⇒ FutureOption[T]): FutureOption[T]

def flatten[T](implicit asFutureOption: (A) ⇒ FutureOption[T]): FutureOption[T]

def foreach[T](f: (A) ⇒ Unit): Unit

def getClass(): Class[_ <: AnyVal]

def getOrElse[B >: A](f: ⇒ Future[B]): Future[B]

final def isInstanceOf[T0]: Boolean

def join[T](other: FutureOption[T]): FutureOption[(A, T)]

def map[T](f: (A) ⇒ T): FutureOption[T]

def orElse[B >: A](f: ⇒ FutureOption[B]): FutureOption[B]

val resolve: Future[Option[A]]

def toString(): String

def withFilter(f: (A) ⇒ Boolean): FutureOption[A]

Inherited from AnyVal

Inherited from Any

Ungrouped