MonadError

Companion object MonadError

trait MonadError[F[_], S] extends Monad[F]

Self Type: MonadError[F, S]
Source: MonadError.scala

Linear Supertypes

Monad[F], Bind[F], Applicative[F], Apply[F], Functor[F], InvariantFunctor[F], AnyRef, Any

Known Subclasses

IsomorphismMonadError

Ordering

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By Inheritance

Inherited

MonadError
Monad
Bind
Applicative
Apply
Functor
InvariantFunctor
AnyRef
Any

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Visibility

Public
All

Type Members

trait ApplicativeLaw extends ApplyLaw

Definition Classes
Applicative
trait ApplyLaw extends FunctorLaw

Definition Classes
Apply
trait FlippedApply extends Apply[F]

Attributes
protected[this]
Definition Classes
Apply
trait BindLaw extends ApplyLaw

Definition Classes
Bind
trait FunctorLaw extends InvariantFunctorLaw

Definition Classes
Functor
trait InvariantFunctorLaw extends AnyRef

Definition Classes
InvariantFunctor
trait MonadLaw extends ApplicativeLaw with BindLaw

Definition Classes
Monad
trait MonadErrorLaw extends AnyRef

Abstract Value Members

abstract def bind[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[B]
Equivalent to join(map(fa)(f)).
Equivalent to join(map(fa)(f)).

Definition Classes
Bind
abstract def handleError[A](fa: F[A])(f: (S) ⇒ F[A]): F[A]
abstract def point[A](a: ⇒ A): F[A]

Definition Classes
Applicative
abstract def raiseError[A](e: S): F[A]

Concrete 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 ap[A, B](fa: ⇒ F[A])(f: ⇒ F[(A) ⇒ B]): F[B]
Sequence f, then fa, combining their results by function application.
Sequence f, then fa, combining their results by function application.
NB: with respect to apply2 and all other combinators, as well as scalaz.Bind, the f action appears to the *left*. So f should be the "first" F-action to perform. This is in accordance with all other implementations of this typeclass in common use, which are "function first".

Definition Classes
Bind → Apply
def ap2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: F[(A, B) ⇒ C]): F[C]

Definition Classes
Apply
def ap3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: F[(A, B, C) ⇒ D]): F[D]

Definition Classes
Apply
def ap4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: F[(A, B, C, D) ⇒ E]): F[E]

Definition Classes
Apply
def ap5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: F[(A, B, C, D, E) ⇒ R]): F[R]

Definition Classes
Apply
def ap6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: F[(A, B, C, D, E, FF) ⇒ R]): F[R]

Definition Classes
Apply
def ap7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: F[(A, B, C, D, E, FF, G) ⇒ R]): F[R]

Definition Classes
Apply
def ap8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: F[(A, B, C, D, E, FF, G, H) ⇒ R]): F[R]

Definition Classes
Apply
def apF[A, B](f: ⇒ F[(A) ⇒ B]): (F[A]) ⇒ F[B]
Flipped variant of ap.
Flipped variant of ap.

Definition Classes
Apply
def applicativeLaw: ApplicativeLaw

Definition Classes
Applicative
val applicativeSyntax: ApplicativeSyntax[F]

Definition Classes
Applicative
def apply[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Alias for map.
Alias for map.

Definition Classes
Functor
def apply10[A, B, C, D, E, FF, G, H, I, J, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J])(f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): F[R]

Definition Classes
Apply
def apply11[A, B, C, D, E, FF, G, H, I, J, K, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K])(f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): F[R]

Definition Classes
Apply
def apply12[A, B, C, D, E, FF, G, H, I, J, K, L, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K], fl: ⇒ F[L])(f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): F[R]

Definition Classes
Apply
def apply2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: (A, B) ⇒ C): F[C]

Definition Classes
Applicative → Apply
def apply3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: (A, B, C) ⇒ D): F[D]

Definition Classes
Apply
def apply4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: (A, B, C, D) ⇒ E): F[E]

Definition Classes
Apply
def apply5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: (A, B, C, D, E) ⇒ R): F[R]

Definition Classes
Apply
def apply6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: (A, B, C, D, E, FF) ⇒ R): F[R]

Definition Classes
Apply
def apply7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: (A, B, C, D, E, FF, G) ⇒ R): F[R]

Definition Classes
Apply
def apply8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: (A, B, C, D, E, FF, G, H) ⇒ R): F[R]

Definition Classes
Apply
def apply9[A, B, C, D, E, FF, G, H, I, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I])(f: (A, B, C, D, E, FF, G, H, I) ⇒ R): F[R]

Definition Classes
Apply
def applyApplicative: Applicative[[α]\/[F[α], α]]
Add a unit to any Apply to form an Applicative.
Add a unit to any Apply to form an Applicative.

Definition Classes
Apply
def applyLaw: ApplyLaw

Definition Classes
Apply
val applySyntax: ApplySyntax[F]

Definition Classes
Apply
final def asInstanceOf[T0]: T0

Definition Classes
Any
def bicompose[G[_, _]](implicit arg0: Bifunctor[G]): Bifunctor[[α, β]F[G[α, β]]]
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor

Definition Classes
Functor
def bindLaw: BindLaw

Definition Classes
Bind
val bindSyntax: BindSyntax[F]

Definition Classes
Bind
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def compose[G[_]](implicit G0: Applicative[G]): Applicative[[α]F[G[α]]]
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative

Definition Classes
Applicative
def compose[G[_]](implicit G0: Apply[G]): Apply[[α]F[G[α]]]
The composition of Applys F and G, [x]F[G[x]], is a Apply
The composition of Applys F and G, [x]F[G[x]], is a Apply

Definition Classes
Apply
def compose[G[_]](implicit G0: Functor[G]): Functor[[α]F[G[α]]]
The composition of Functors F and G, [x]F[G[x]], is a Functor
The composition of Functors F and G, [x]F[G[x]], is a Functor

Definition Classes
Functor
def counzip[A, B](a: \/[F[A], F[B]]): F[\/[A, B]]

Definition Classes
Functor
def discardLeft[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[B]
Combine fa and fb according to Apply[F] with a function that discards the A(s)
Combine fa and fb according to Apply[F] with a function that discards the A(s)

Definition Classes
Apply
def discardRight[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[A]
Combine fa and fb according to Apply[F] with a function that discards the B(s)
Combine fa and fb according to Apply[F] with a function that discards the B(s)

Definition Classes
Apply
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def filterM[A](l: List[A])(f: (A) ⇒ F[Boolean]): F[List[A]]
Filter l according to an applicative predicate.
Filter l according to an applicative predicate.

Definition Classes
Applicative
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def flip: Applicative[F]
An Applicative for F in which effects happen in the opposite order.
An Applicative for F in which effects happen in the opposite order.

Definition Classes
Applicative → Apply
def forever[A, B](fa: F[A]): F[B]
Repeats an applicative action infinitely
Repeats an applicative action infinitely

Definition Classes
Apply
def fpair[A](fa: F[A]): F[(A, A)]
Twin all As in fa.
Twin all As in fa.

Definition Classes
Functor
def fproduct[A, B](fa: F[A])(f: (A) ⇒ B): F[(A, B)]
Pair all As in fa with the result of function application.
Pair all As in fa with the result of function application.

Definition Classes
Functor
def functorLaw: FunctorLaw

Definition Classes
Functor
val functorSyntax: FunctorSyntax[F]

Definition Classes
Functor
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
def icompose[G[_]](implicit G0: Contravariant[G]): Contravariant[[α]F[G[α]]]
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.

Definition Classes
Functor
def ifM[B](value: F[Boolean], ifTrue: ⇒ F[B], ifFalse: ⇒ F[B]): F[B]
if lifted into a binding.
if lifted into a binding. Unlike lift3((t,c,a)=>if(t)c else a), this will only include context from the chosen of ifTrue and ifFalse, not the other.

Definition Classes
Bind
def invariantFunctorLaw: InvariantFunctorLaw

Definition Classes
InvariantFunctor
val invariantFunctorSyntax: InvariantFunctorSyntax[F]

Definition Classes
InvariantFunctor
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def iterateUntil[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.

Definition Classes
Monad
def iterateWhile[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.

Definition Classes
Monad
def join[A](ffa: F[F[A]]): F[A]
Sequence the inner F of FFA after the outer F, forming a single F[A].
Sequence the inner F of FFA after the outer F, forming a single F[A].

Definition Classes
Bind
def lift[A, B](f: (A) ⇒ B): (F[A]) ⇒ F[B]
Lift f into F.
Lift f into F.

Definition Classes
Functor
def lift10[A, B, C, D, E, FF, G, H, I, J, R](f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J]) ⇒ F[R]

Definition Classes
Apply
def lift11[A, B, C, D, E, FF, G, H, I, J, K, R](f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K]) ⇒ F[R]

Definition Classes
Apply
def lift12[A, B, C, D, E, FF, G, H, I, J, K, L, R](f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K], F[L]) ⇒ F[R]

Definition Classes
Apply
def lift2[A, B, C](f: (A, B) ⇒ C): (F[A], F[B]) ⇒ F[C]

Definition Classes
Apply
def lift3[A, B, C, D](f: (A, B, C) ⇒ D): (F[A], F[B], F[C]) ⇒ F[D]

Definition Classes
Apply
def lift4[A, B, C, D, E](f: (A, B, C, D) ⇒ E): (F[A], F[B], F[C], F[D]) ⇒ F[E]

Definition Classes
Apply
def lift5[A, B, C, D, E, R](f: (A, B, C, D, E) ⇒ R): (F[A], F[B], F[C], F[D], F[E]) ⇒ F[R]

Definition Classes
Apply
def lift6[A, B, C, D, E, FF, R](f: (A, B, C, D, E, FF) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF]) ⇒ F[R]

Definition Classes
Apply
def lift7[A, B, C, D, E, FF, G, R](f: (A, B, C, D, E, FF, G) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G]) ⇒ F[R]

Definition Classes
Apply
def lift8[A, B, C, D, E, FF, G, H, R](f: (A, B, C, D, E, FF, G, H) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H]) ⇒ F[R]

Definition Classes
Apply
def lift9[A, B, C, D, E, FF, G, H, I, R](f: (A, B, C, D, E, FF, G, H, I) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I]) ⇒ F[R]

Definition Classes
Apply
def map[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Lift f into F and apply to F[A].
Lift f into F and apply to F[A].

Definition Classes
Monad → Applicative → Functor
def mapply[A, B](a: A)(f: F[(A) ⇒ B]): F[B]
Lift apply(a), and apply the result to f.
Lift apply(a), and apply the result to f.

Definition Classes
Functor
def monadErrorLaw: MonadErrorLaw
val monadErrorSyntax: MonadErrorSyntax[F, S]
def monadLaw: MonadLaw

Definition Classes
Monad
val monadSyntax: MonadSyntax[F]

Definition Classes
Monad
def mproduct[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[(A, B)]
Pair A with the result of function application.
Pair A with the result of function application.

Definition Classes
Bind
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def product[G[_]](implicit G0: Monad[G]): Monad[[α](F[α], G[α])]
The product of Monad F and G, [x](F[x], G[x]]), is a Monad
The product of Monad F and G, [x](F[x], G[x]]), is a Monad

Definition Classes
Monad
def product[G[_]](implicit G0: Bind[G]): Bind[[α](F[α], G[α])]
The product of Bind F and G, [x](F[x], G[x]]), is a Bind
The product of Bind F and G, [x](F[x], G[x]]), is a Bind

Definition Classes
Bind
def product[G[_]](implicit G0: Applicative[G]): Applicative[[α](F[α], G[α])]
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative

Definition Classes
Applicative
def product[G[_]](implicit G0: Apply[G]): Apply[[α](F[α], G[α])]
The product of Applys F and G, [x](F[x], G[x]]), is a Apply
The product of Applys F and G, [x](F[x], G[x]]), is a Apply

Definition Classes
Apply
def product[G[_]](implicit G0: Functor[G]): Functor[[α](F[α], G[α])]
The product of Functors F and G, [x](F[x], G[x]]), is a Functor
The product of Functors F and G, [x](F[x], G[x]]), is a Functor

Definition Classes
Functor
final def pure[A](a: ⇒ A): F[A]

Definition Classes
Applicative
def replicateM[A](n: Int, fa: F[A]): F[List[A]]
Performs the action n times, returning the list of results.
Performs the action n times, returning the list of results.

Definition Classes
Applicative
def replicateM_[A](n: Int, fa: F[A]): F[Unit]
Performs the action n times, returning nothing.
Performs the action n times, returning nothing.

Definition Classes
Applicative
def sequence[A, G[_]](as: G[F[A]])(implicit arg0: Traverse[G]): F[G[A]]

Definition Classes
Applicative
def sequence1[A, G[_]](as: G[F[A]])(implicit arg0: Traverse1[G]): F[G[A]]

Definition Classes
Apply
def strengthL[A, B](a: A, f: F[B]): F[(A, B)]
Inject a to the left of Bs in f.
Inject a to the left of Bs in f.

Definition Classes
Functor
def strengthR[A, B](f: F[A], b: B): F[(A, B)]
Inject b to the right of As in f.
Inject b to the right of As in f.

Definition Classes
Functor
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
def traverse[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse[G]): F[G[B]]

Definition Classes
Applicative
def traverse1[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse1[G]): F[G[B]]

Definition Classes
Apply
def tuple2[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[(A, B)]

Definition Classes
Apply
def tuple3[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C]): F[(A, B, C)]

Definition Classes
Apply
def tuple4[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D]): F[(A, B, C, D)]

Definition Classes
Apply
def tuple5[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E]): F[(A, B, C, D, E)]

Definition Classes
Apply
def unlessM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is false, otherwise, unit lifted into F.
Returns the given argument if cond is false, otherwise, unit lifted into F.

Definition Classes
Applicative
def untilM[G[_], A](f: F[A], cond: ⇒ F[Boolean])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Collects results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def untilM_[A](f: F[A], cond: ⇒ F[Boolean]): F[Unit]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Discards results.

Definition Classes
Monad
def void[A](fa: F[A]): F[Unit]
Empty fa of meaningful pure values, preserving its structure.
Empty fa of meaningful pure values, preserving its structure.

Definition Classes
Functor
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
def whenM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is true, otherwise, unit lifted into F.
Returns the given argument if cond is true, otherwise, unit lifted into F.

Definition Classes
Applicative
def whileM[G[_], A](p: F[Boolean], body: ⇒ F[A])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evalated before the loop body. Collects the results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def whileM_[A](p: F[Boolean], body: ⇒ F[A]): F[Unit]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evaluated before the loop body. Discards results.

Definition Classes
Monad
def widen[A, B](fa: F[A])(implicit ev: <~<[A, B]): F[B]
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.

Definition Classes
Functor
def xmap[A, B](fa: F[A], f: (A) ⇒ B, g: (B) ⇒ A): F[B]
Converts ma to a value of type F[B] using the provided functions f and g.
Converts ma to a value of type F[B] using the provided functions f and g.

Definition Classes
Functor → InvariantFunctor
def xmapb[A, B](ma: F[A])(b: Bijection[A, B]): F[B]
Converts ma to a value of type F[B] using the provided bijection.
Converts ma to a value of type F[B] using the provided bijection.

Definition Classes
InvariantFunctor
def xmapi[A, B](ma: F[A])(iso: Isomorphism.<=>[A, B]): F[B]
Converts ma to a value of type F[B] using the provided isomorphism.
Converts ma to a value of type F[B] using the provided isomorphism.

Definition Classes
InvariantFunctor

Inherited from Monad[F]

Value Members

def iterateUntil[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.

Definition Classes
Monad
def iterateWhile[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.

Definition Classes
Monad
def map[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Lift f into F and apply to F[A].
Lift f into F and apply to F[A].

Definition Classes
Monad → Applicative → Functor
def monadLaw: MonadLaw

Definition Classes
Monad
val monadSyntax: MonadSyntax[F]

Definition Classes
Monad
def product[G[_]](implicit G0: Monad[G]): Monad[[α](F[α], G[α])]
The product of Monad F and G, [x](F[x], G[x]]), is a Monad
The product of Monad F and G, [x](F[x], G[x]]), is a Monad

Definition Classes
Monad
def untilM[G[_], A](f: F[A], cond: ⇒ F[Boolean])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Collects results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def untilM_[A](f: F[A], cond: ⇒ F[Boolean]): F[Unit]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Discards results.

Definition Classes
Monad
def whileM[G[_], A](p: F[Boolean], body: ⇒ F[A])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evalated before the loop body. Collects the results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def whileM_[A](p: F[Boolean], body: ⇒ F[A]): F[Unit]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evaluated before the loop body. Discards results.

Definition Classes
Monad

Inherited from Bind[F]

Value Members

abstract def bind[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[B]
Equivalent to join(map(fa)(f)).
Equivalent to join(map(fa)(f)).

Definition Classes
Bind
def ap[A, B](fa: ⇒ F[A])(f: ⇒ F[(A) ⇒ B]): F[B]
Sequence f, then fa, combining their results by function application.
Sequence f, then fa, combining their results by function application.
NB: with respect to apply2 and all other combinators, as well as scalaz.Bind, the f action appears to the *left*. So f should be the "first" F-action to perform. This is in accordance with all other implementations of this typeclass in common use, which are "function first".

Definition Classes
Bind → Apply
def bindLaw: BindLaw

Definition Classes
Bind
val bindSyntax: BindSyntax[F]

Definition Classes
Bind
def ifM[B](value: F[Boolean], ifTrue: ⇒ F[B], ifFalse: ⇒ F[B]): F[B]
if lifted into a binding.
if lifted into a binding. Unlike lift3((t,c,a)=>if(t)c else a), this will only include context from the chosen of ifTrue and ifFalse, not the other.

Definition Classes
Bind
def join[A](ffa: F[F[A]]): F[A]
Sequence the inner F of FFA after the outer F, forming a single F[A].
Sequence the inner F of FFA after the outer F, forming a single F[A].

Definition Classes
Bind
def mproduct[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[(A, B)]
Pair A with the result of function application.
Pair A with the result of function application.

Definition Classes
Bind
def product[G[_]](implicit G0: Bind[G]): Bind[[α](F[α], G[α])]
The product of Bind F and G, [x](F[x], G[x]]), is a Bind
The product of Bind F and G, [x](F[x], G[x]]), is a Bind

Definition Classes
Bind

Inherited from Applicative[F]

Value Members

abstract def point[A](a: ⇒ A): F[A]

Definition Classes
Applicative
def applicativeLaw: ApplicativeLaw

Definition Classes
Applicative
val applicativeSyntax: ApplicativeSyntax[F]

Definition Classes
Applicative
def apply2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: (A, B) ⇒ C): F[C]

Definition Classes
Applicative → Apply
def compose[G[_]](implicit G0: Applicative[G]): Applicative[[α]F[G[α]]]
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative

Definition Classes
Applicative
def filterM[A](l: List[A])(f: (A) ⇒ F[Boolean]): F[List[A]]
Filter l according to an applicative predicate.
Filter l according to an applicative predicate.

Definition Classes
Applicative
def flip: Applicative[F]
An Applicative for F in which effects happen in the opposite order.
An Applicative for F in which effects happen in the opposite order.

Definition Classes
Applicative → Apply
def product[G[_]](implicit G0: Applicative[G]): Applicative[[α](F[α], G[α])]
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative

Definition Classes
Applicative
final def pure[A](a: ⇒ A): F[A]

Definition Classes
Applicative
def replicateM[A](n: Int, fa: F[A]): F[List[A]]
Performs the action n times, returning the list of results.
Performs the action n times, returning the list of results.

Definition Classes
Applicative
def replicateM_[A](n: Int, fa: F[A]): F[Unit]
Performs the action n times, returning nothing.
Performs the action n times, returning nothing.

Definition Classes
Applicative
def sequence[A, G[_]](as: G[F[A]])(implicit arg0: Traverse[G]): F[G[A]]

Definition Classes
Applicative
def traverse[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse[G]): F[G[B]]

Definition Classes
Applicative
def unlessM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is false, otherwise, unit lifted into F.
Returns the given argument if cond is false, otherwise, unit lifted into F.

Definition Classes
Applicative
def whenM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is true, otherwise, unit lifted into F.
Returns the given argument if cond is true, otherwise, unit lifted into F.

Definition Classes
Applicative

Inherited from Apply[F]

Value Members

def ap2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: F[(A, B) ⇒ C]): F[C]

Definition Classes
Apply
def ap3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: F[(A, B, C) ⇒ D]): F[D]

Definition Classes
Apply
def ap4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: F[(A, B, C, D) ⇒ E]): F[E]

Definition Classes
Apply
def ap5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: F[(A, B, C, D, E) ⇒ R]): F[R]

Definition Classes
Apply
def ap6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: F[(A, B, C, D, E, FF) ⇒ R]): F[R]

Definition Classes
Apply
def ap7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: F[(A, B, C, D, E, FF, G) ⇒ R]): F[R]

Definition Classes
Apply
def ap8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: F[(A, B, C, D, E, FF, G, H) ⇒ R]): F[R]

Definition Classes
Apply
def apF[A, B](f: ⇒ F[(A) ⇒ B]): (F[A]) ⇒ F[B]
Flipped variant of ap.
Flipped variant of ap.

Definition Classes
Apply
def apply10[A, B, C, D, E, FF, G, H, I, J, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J])(f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): F[R]

Definition Classes
Apply
def apply11[A, B, C, D, E, FF, G, H, I, J, K, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K])(f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): F[R]

Definition Classes
Apply
def apply12[A, B, C, D, E, FF, G, H, I, J, K, L, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K], fl: ⇒ F[L])(f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): F[R]

Definition Classes
Apply
def apply3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: (A, B, C) ⇒ D): F[D]

Definition Classes
Apply
def apply4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: (A, B, C, D) ⇒ E): F[E]

Definition Classes
Apply
def apply5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: (A, B, C, D, E) ⇒ R): F[R]

Definition Classes
Apply
def apply6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: (A, B, C, D, E, FF) ⇒ R): F[R]

Definition Classes
Apply
def apply7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: (A, B, C, D, E, FF, G) ⇒ R): F[R]

Definition Classes
Apply
def apply8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: (A, B, C, D, E, FF, G, H) ⇒ R): F[R]

Definition Classes
Apply
def apply9[A, B, C, D, E, FF, G, H, I, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I])(f: (A, B, C, D, E, FF, G, H, I) ⇒ R): F[R]

Definition Classes
Apply
def applyApplicative: Applicative[[α]\/[F[α], α]]
Add a unit to any Apply to form an Applicative.
Add a unit to any Apply to form an Applicative.

Definition Classes
Apply
def applyLaw: ApplyLaw

Definition Classes
Apply
val applySyntax: ApplySyntax[F]

Definition Classes
Apply
def compose[G[_]](implicit G0: Apply[G]): Apply[[α]F[G[α]]]
The composition of Applys F and G, [x]F[G[x]], is a Apply
The composition of Applys F and G, [x]F[G[x]], is a Apply

Definition Classes
Apply
def discardLeft[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[B]
Combine fa and fb according to Apply[F] with a function that discards the A(s)
Combine fa and fb according to Apply[F] with a function that discards the A(s)

Definition Classes
Apply
def discardRight[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[A]
Combine fa and fb according to Apply[F] with a function that discards the B(s)
Combine fa and fb according to Apply[F] with a function that discards the B(s)

Definition Classes
Apply
def forever[A, B](fa: F[A]): F[B]
Repeats an applicative action infinitely
Repeats an applicative action infinitely

Definition Classes
Apply
def lift10[A, B, C, D, E, FF, G, H, I, J, R](f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J]) ⇒ F[R]

Definition Classes
Apply
def lift11[A, B, C, D, E, FF, G, H, I, J, K, R](f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K]) ⇒ F[R]

Definition Classes
Apply
def lift12[A, B, C, D, E, FF, G, H, I, J, K, L, R](f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K], F[L]) ⇒ F[R]

Definition Classes
Apply
def lift2[A, B, C](f: (A, B) ⇒ C): (F[A], F[B]) ⇒ F[C]

Definition Classes
Apply
def lift3[A, B, C, D](f: (A, B, C) ⇒ D): (F[A], F[B], F[C]) ⇒ F[D]

Definition Classes
Apply
def lift4[A, B, C, D, E](f: (A, B, C, D) ⇒ E): (F[A], F[B], F[C], F[D]) ⇒ F[E]

Definition Classes
Apply
def lift5[A, B, C, D, E, R](f: (A, B, C, D, E) ⇒ R): (F[A], F[B], F[C], F[D], F[E]) ⇒ F[R]

Definition Classes
Apply
def lift6[A, B, C, D, E, FF, R](f: (A, B, C, D, E, FF) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF]) ⇒ F[R]

Definition Classes
Apply
def lift7[A, B, C, D, E, FF, G, R](f: (A, B, C, D, E, FF, G) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G]) ⇒ F[R]

Definition Classes
Apply
def lift8[A, B, C, D, E, FF, G, H, R](f: (A, B, C, D, E, FF, G, H) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H]) ⇒ F[R]

Definition Classes
Apply
def lift9[A, B, C, D, E, FF, G, H, I, R](f: (A, B, C, D, E, FF, G, H, I) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I]) ⇒ F[R]

Definition Classes
Apply
def product[G[_]](implicit G0: Apply[G]): Apply[[α](F[α], G[α])]
The product of Applys F and G, [x](F[x], G[x]]), is a Apply
The product of Applys F and G, [x](F[x], G[x]]), is a Apply

Definition Classes
Apply
def sequence1[A, G[_]](as: G[F[A]])(implicit arg0: Traverse1[G]): F[G[A]]

Definition Classes
Apply
def traverse1[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse1[G]): F[G[B]]

Definition Classes
Apply
def tuple2[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[(A, B)]

Definition Classes
Apply
def tuple3[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C]): F[(A, B, C)]

Definition Classes
Apply
def tuple4[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D]): F[(A, B, C, D)]

Definition Classes
Apply
def tuple5[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E]): F[(A, B, C, D, E)]

Definition Classes
Apply

Inherited from Functor[F]

Value Members

def apply[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Alias for map.
Alias for map.

Definition Classes
Functor
def bicompose[G[_, _]](implicit arg0: Bifunctor[G]): Bifunctor[[α, β]F[G[α, β]]]
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor

Definition Classes
Functor
def compose[G[_]](implicit G0: Functor[G]): Functor[[α]F[G[α]]]
The composition of Functors F and G, [x]F[G[x]], is a Functor
The composition of Functors F and G, [x]F[G[x]], is a Functor

Definition Classes
Functor
def counzip[A, B](a: \/[F[A], F[B]]): F[\/[A, B]]

Definition Classes
Functor
def fpair[A](fa: F[A]): F[(A, A)]
Twin all As in fa.
Twin all As in fa.

Definition Classes
Functor
def fproduct[A, B](fa: F[A])(f: (A) ⇒ B): F[(A, B)]
Pair all As in fa with the result of function application.
Pair all As in fa with the result of function application.

Definition Classes
Functor
def functorLaw: FunctorLaw

Definition Classes
Functor
val functorSyntax: FunctorSyntax[F]

Definition Classes
Functor
def icompose[G[_]](implicit G0: Contravariant[G]): Contravariant[[α]F[G[α]]]
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.

Definition Classes
Functor
def lift[A, B](f: (A) ⇒ B): (F[A]) ⇒ F[B]
Lift f into F.
Lift f into F.

Definition Classes
Functor
def mapply[A, B](a: A)(f: F[(A) ⇒ B]): F[B]
Lift apply(a), and apply the result to f.
Lift apply(a), and apply the result to f.

Definition Classes
Functor
def product[G[_]](implicit G0: Functor[G]): Functor[[α](F[α], G[α])]
The product of Functors F and G, [x](F[x], G[x]]), is a Functor
The product of Functors F and G, [x](F[x], G[x]]), is a Functor

Definition Classes
Functor
def strengthL[A, B](a: A, f: F[B]): F[(A, B)]
Inject a to the left of Bs in f.
Inject a to the left of Bs in f.

Definition Classes
Functor
def strengthR[A, B](f: F[A], b: B): F[(A, B)]
Inject b to the right of As in f.
Inject b to the right of As in f.

Definition Classes
Functor
def void[A](fa: F[A]): F[Unit]
Empty fa of meaningful pure values, preserving its structure.
Empty fa of meaningful pure values, preserving its structure.

Definition Classes
Functor
def widen[A, B](fa: F[A])(implicit ev: <~<[A, B]): F[B]
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.

Definition Classes
Functor
def xmap[A, B](fa: F[A], f: (A) ⇒ B, g: (B) ⇒ A): F[B]
Converts ma to a value of type F[B] using the provided functions f and g.
Converts ma to a value of type F[B] using the provided functions f and g.

Definition Classes
Functor → InvariantFunctor

Inherited from InvariantFunctor[F]

Value Members

def invariantFunctorLaw: InvariantFunctorLaw

Definition Classes
InvariantFunctor
val invariantFunctorSyntax: InvariantFunctorSyntax[F]

Definition Classes
InvariantFunctor
def xmapb[A, B](ma: F[A])(b: Bijection[A, B]): F[B]
Converts ma to a value of type F[B] using the provided bijection.
Converts ma to a value of type F[B] using the provided bijection.

Definition Classes
InvariantFunctor
def xmapi[A, B](ma: F[A])(iso: Isomorphism.<=>[A, B]): F[B]
Converts ma to a value of type F[B] using the provided isomorphism.
Converts ma to a value of type F[B] using the provided isomorphism.

Definition Classes
InvariantFunctor

Inherited from AnyRef

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 clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
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( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Inherited from Any

Value Members

final def asInstanceOf[T0]: T0

Definition Classes
Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any

Ungrouped

trait ApplicativeLaw extends ApplyLaw

Definition Classes
Applicative
trait ApplyLaw extends FunctorLaw

Definition Classes
Apply
trait FlippedApply extends Apply[F]

Attributes
protected[this]
Definition Classes
Apply
trait BindLaw extends ApplyLaw

Definition Classes
Bind
trait FunctorLaw extends InvariantFunctorLaw

Definition Classes
Functor
trait InvariantFunctorLaw extends AnyRef

Definition Classes
InvariantFunctor
trait MonadLaw extends ApplicativeLaw with BindLaw

Definition Classes
Monad
trait MonadErrorLaw extends AnyRef

abstract def bind[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[B]
Equivalent to join(map(fa)(f)).
Equivalent to join(map(fa)(f)).

Definition Classes
Bind
abstract def handleError[A](fa: F[A])(f: (S) ⇒ F[A]): F[A]
abstract def point[A](a: ⇒ A): F[A]

Definition Classes
Applicative
abstract def raiseError[A](e: S): F[A]
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 ap[A, B](fa: ⇒ F[A])(f: ⇒ F[(A) ⇒ B]): F[B]
Sequence f, then fa, combining their results by function application.
Sequence f, then fa, combining their results by function application.
NB: with respect to apply2 and all other combinators, as well as scalaz.Bind, the f action appears to the *left*. So f should be the "first" F-action to perform. This is in accordance with all other implementations of this typeclass in common use, which are "function first".

Definition Classes
Bind → Apply
def ap2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: F[(A, B) ⇒ C]): F[C]

Definition Classes
Apply
def ap3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: F[(A, B, C) ⇒ D]): F[D]

Definition Classes
Apply
def ap4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: F[(A, B, C, D) ⇒ E]): F[E]

Definition Classes
Apply
def ap5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: F[(A, B, C, D, E) ⇒ R]): F[R]

Definition Classes
Apply
def ap6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: F[(A, B, C, D, E, FF) ⇒ R]): F[R]

Definition Classes
Apply
def ap7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: F[(A, B, C, D, E, FF, G) ⇒ R]): F[R]

Definition Classes
Apply
def ap8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: F[(A, B, C, D, E, FF, G, H) ⇒ R]): F[R]

Definition Classes
Apply
def apF[A, B](f: ⇒ F[(A) ⇒ B]): (F[A]) ⇒ F[B]
Flipped variant of ap.
Flipped variant of ap.

Definition Classes
Apply
def applicativeLaw: ApplicativeLaw

Definition Classes
Applicative
val applicativeSyntax: ApplicativeSyntax[F]

Definition Classes
Applicative
def apply[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Alias for map.
Alias for map.

Definition Classes
Functor
def apply10[A, B, C, D, E, FF, G, H, I, J, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J])(f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): F[R]

Definition Classes
Apply
def apply11[A, B, C, D, E, FF, G, H, I, J, K, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K])(f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): F[R]

Definition Classes
Apply
def apply12[A, B, C, D, E, FF, G, H, I, J, K, L, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I], fj: ⇒ F[J], fk: ⇒ F[K], fl: ⇒ F[L])(f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): F[R]

Definition Classes
Apply
def apply2[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B])(f: (A, B) ⇒ C): F[C]

Definition Classes
Applicative → Apply
def apply3[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C])(f: (A, B, C) ⇒ D): F[D]

Definition Classes
Apply
def apply4[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D])(f: (A, B, C, D) ⇒ E): F[E]

Definition Classes
Apply
def apply5[A, B, C, D, E, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E])(f: (A, B, C, D, E) ⇒ R): F[R]

Definition Classes
Apply
def apply6[A, B, C, D, E, FF, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF])(f: (A, B, C, D, E, FF) ⇒ R): F[R]

Definition Classes
Apply
def apply7[A, B, C, D, E, FF, G, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G])(f: (A, B, C, D, E, FF, G) ⇒ R): F[R]

Definition Classes
Apply
def apply8[A, B, C, D, E, FF, G, H, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H])(f: (A, B, C, D, E, FF, G, H) ⇒ R): F[R]

Definition Classes
Apply
def apply9[A, B, C, D, E, FF, G, H, I, R](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E], ff: ⇒ F[FF], fg: ⇒ F[G], fh: ⇒ F[H], fi: ⇒ F[I])(f: (A, B, C, D, E, FF, G, H, I) ⇒ R): F[R]

Definition Classes
Apply
def applyApplicative: Applicative[[α]\/[F[α], α]]
Add a unit to any Apply to form an Applicative.
Add a unit to any Apply to form an Applicative.

Definition Classes
Apply
def applyLaw: ApplyLaw

Definition Classes
Apply
val applySyntax: ApplySyntax[F]

Definition Classes
Apply
final def asInstanceOf[T0]: T0

Definition Classes
Any
def bicompose[G[_, _]](implicit arg0: Bifunctor[G]): Bifunctor[[α, β]F[G[α, β]]]
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor
The composition of Functor F and Bifunctor G, [x, y]F[G[x, y]], is a Bifunctor

Definition Classes
Functor
def bindLaw: BindLaw

Definition Classes
Bind
val bindSyntax: BindSyntax[F]

Definition Classes
Bind
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def compose[G[_]](implicit G0: Applicative[G]): Applicative[[α]F[G[α]]]
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative
The composition of Applicatives F and G, [x]F[G[x]], is an Applicative

Definition Classes
Applicative
def compose[G[_]](implicit G0: Apply[G]): Apply[[α]F[G[α]]]
The composition of Applys F and G, [x]F[G[x]], is a Apply
The composition of Applys F and G, [x]F[G[x]], is a Apply

Definition Classes
Apply
def compose[G[_]](implicit G0: Functor[G]): Functor[[α]F[G[α]]]
The composition of Functors F and G, [x]F[G[x]], is a Functor
The composition of Functors F and G, [x]F[G[x]], is a Functor

Definition Classes
Functor
def counzip[A, B](a: \/[F[A], F[B]]): F[\/[A, B]]

Definition Classes
Functor
def discardLeft[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[B]
Combine fa and fb according to Apply[F] with a function that discards the A(s)
Combine fa and fb according to Apply[F] with a function that discards the A(s)

Definition Classes
Apply
def discardRight[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[A]
Combine fa and fb according to Apply[F] with a function that discards the B(s)
Combine fa and fb according to Apply[F] with a function that discards the B(s)

Definition Classes
Apply
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def filterM[A](l: List[A])(f: (A) ⇒ F[Boolean]): F[List[A]]
Filter l according to an applicative predicate.
Filter l according to an applicative predicate.

Definition Classes
Applicative
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def flip: Applicative[F]
An Applicative for F in which effects happen in the opposite order.
An Applicative for F in which effects happen in the opposite order.

Definition Classes
Applicative → Apply
def forever[A, B](fa: F[A]): F[B]
Repeats an applicative action infinitely
Repeats an applicative action infinitely

Definition Classes
Apply
def fpair[A](fa: F[A]): F[(A, A)]
Twin all As in fa.
Twin all As in fa.

Definition Classes
Functor
def fproduct[A, B](fa: F[A])(f: (A) ⇒ B): F[(A, B)]
Pair all As in fa with the result of function application.
Pair all As in fa with the result of function application.

Definition Classes
Functor
def functorLaw: FunctorLaw

Definition Classes
Functor
val functorSyntax: FunctorSyntax[F]

Definition Classes
Functor
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
def icompose[G[_]](implicit G0: Contravariant[G]): Contravariant[[α]F[G[α]]]
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.
The composition of Functor F and Contravariant G, [x]F[G[x]], is contravariant.

Definition Classes
Functor
def ifM[B](value: F[Boolean], ifTrue: ⇒ F[B], ifFalse: ⇒ F[B]): F[B]
if lifted into a binding.
if lifted into a binding. Unlike lift3((t,c,a)=>if(t)c else a), this will only include context from the chosen of ifTrue and ifFalse, not the other.

Definition Classes
Bind
def invariantFunctorLaw: InvariantFunctorLaw

Definition Classes
InvariantFunctor
val invariantFunctorSyntax: InvariantFunctorSyntax[F]

Definition Classes
InvariantFunctor
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def iterateUntil[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result satisfies the given predicate and return that result, discarding all others.

Definition Classes
Monad
def iterateWhile[A](f: F[A])(p: (A) ⇒ Boolean): F[A]
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.
Execute an action repeatedly until its result fails to satisfy the given predicate and return that result, discarding all others.

Definition Classes
Monad
def join[A](ffa: F[F[A]]): F[A]
Sequence the inner F of FFA after the outer F, forming a single F[A].
Sequence the inner F of FFA after the outer F, forming a single F[A].

Definition Classes
Bind
def lift[A, B](f: (A) ⇒ B): (F[A]) ⇒ F[B]
Lift f into F.
Lift f into F.

Definition Classes
Functor
def lift10[A, B, C, D, E, FF, G, H, I, J, R](f: (A, B, C, D, E, FF, G, H, I, J) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J]) ⇒ F[R]

Definition Classes
Apply
def lift11[A, B, C, D, E, FF, G, H, I, J, K, R](f: (A, B, C, D, E, FF, G, H, I, J, K) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K]) ⇒ F[R]

Definition Classes
Apply
def lift12[A, B, C, D, E, FF, G, H, I, J, K, L, R](f: (A, B, C, D, E, FF, G, H, I, J, K, L) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I], F[J], F[K], F[L]) ⇒ F[R]

Definition Classes
Apply
def lift2[A, B, C](f: (A, B) ⇒ C): (F[A], F[B]) ⇒ F[C]

Definition Classes
Apply
def lift3[A, B, C, D](f: (A, B, C) ⇒ D): (F[A], F[B], F[C]) ⇒ F[D]

Definition Classes
Apply
def lift4[A, B, C, D, E](f: (A, B, C, D) ⇒ E): (F[A], F[B], F[C], F[D]) ⇒ F[E]

Definition Classes
Apply
def lift5[A, B, C, D, E, R](f: (A, B, C, D, E) ⇒ R): (F[A], F[B], F[C], F[D], F[E]) ⇒ F[R]

Definition Classes
Apply
def lift6[A, B, C, D, E, FF, R](f: (A, B, C, D, E, FF) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF]) ⇒ F[R]

Definition Classes
Apply
def lift7[A, B, C, D, E, FF, G, R](f: (A, B, C, D, E, FF, G) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G]) ⇒ F[R]

Definition Classes
Apply
def lift8[A, B, C, D, E, FF, G, H, R](f: (A, B, C, D, E, FF, G, H) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H]) ⇒ F[R]

Definition Classes
Apply
def lift9[A, B, C, D, E, FF, G, H, I, R](f: (A, B, C, D, E, FF, G, H, I) ⇒ R): (F[A], F[B], F[C], F[D], F[E], F[FF], F[G], F[H], F[I]) ⇒ F[R]

Definition Classes
Apply
def map[A, B](fa: F[A])(f: (A) ⇒ B): F[B]
Lift f into F and apply to F[A].
Lift f into F and apply to F[A].

Definition Classes
Monad → Applicative → Functor
def mapply[A, B](a: A)(f: F[(A) ⇒ B]): F[B]
Lift apply(a), and apply the result to f.
Lift apply(a), and apply the result to f.

Definition Classes
Functor
def monadErrorLaw: MonadErrorLaw
val monadErrorSyntax: MonadErrorSyntax[F, S]
def monadLaw: MonadLaw

Definition Classes
Monad
val monadSyntax: MonadSyntax[F]

Definition Classes
Monad
def mproduct[A, B](fa: F[A])(f: (A) ⇒ F[B]): F[(A, B)]
Pair A with the result of function application.
Pair A with the result of function application.

Definition Classes
Bind
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def product[G[_]](implicit G0: Monad[G]): Monad[[α](F[α], G[α])]
The product of Monad F and G, [x](F[x], G[x]]), is a Monad
The product of Monad F and G, [x](F[x], G[x]]), is a Monad

Definition Classes
Monad
def product[G[_]](implicit G0: Bind[G]): Bind[[α](F[α], G[α])]
The product of Bind F and G, [x](F[x], G[x]]), is a Bind
The product of Bind F and G, [x](F[x], G[x]]), is a Bind

Definition Classes
Bind
def product[G[_]](implicit G0: Applicative[G]): Applicative[[α](F[α], G[α])]
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative
The product of Applicatives F and G, [x](F[x], G[x]]), is an Applicative

Definition Classes
Applicative
def product[G[_]](implicit G0: Apply[G]): Apply[[α](F[α], G[α])]
The product of Applys F and G, [x](F[x], G[x]]), is a Apply
The product of Applys F and G, [x](F[x], G[x]]), is a Apply

Definition Classes
Apply
def product[G[_]](implicit G0: Functor[G]): Functor[[α](F[α], G[α])]
The product of Functors F and G, [x](F[x], G[x]]), is a Functor
The product of Functors F and G, [x](F[x], G[x]]), is a Functor

Definition Classes
Functor
final def pure[A](a: ⇒ A): F[A]

Definition Classes
Applicative
def replicateM[A](n: Int, fa: F[A]): F[List[A]]
Performs the action n times, returning the list of results.
Performs the action n times, returning the list of results.

Definition Classes
Applicative
def replicateM_[A](n: Int, fa: F[A]): F[Unit]
Performs the action n times, returning nothing.
Performs the action n times, returning nothing.

Definition Classes
Applicative
def sequence[A, G[_]](as: G[F[A]])(implicit arg0: Traverse[G]): F[G[A]]

Definition Classes
Applicative
def sequence1[A, G[_]](as: G[F[A]])(implicit arg0: Traverse1[G]): F[G[A]]

Definition Classes
Apply
def strengthL[A, B](a: A, f: F[B]): F[(A, B)]
Inject a to the left of Bs in f.
Inject a to the left of Bs in f.

Definition Classes
Functor
def strengthR[A, B](f: F[A], b: B): F[(A, B)]
Inject b to the right of As in f.
Inject b to the right of As in f.

Definition Classes
Functor
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
def traverse[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse[G]): F[G[B]]

Definition Classes
Applicative
def traverse1[A, G[_], B](value: G[A])(f: (A) ⇒ F[B])(implicit G: Traverse1[G]): F[G[B]]

Definition Classes
Apply
def tuple2[A, B](fa: ⇒ F[A], fb: ⇒ F[B]): F[(A, B)]

Definition Classes
Apply
def tuple3[A, B, C](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C]): F[(A, B, C)]

Definition Classes
Apply
def tuple4[A, B, C, D](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D]): F[(A, B, C, D)]

Definition Classes
Apply
def tuple5[A, B, C, D, E](fa: ⇒ F[A], fb: ⇒ F[B], fc: ⇒ F[C], fd: ⇒ F[D], fe: ⇒ F[E]): F[(A, B, C, D, E)]

Definition Classes
Apply
def unlessM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is false, otherwise, unit lifted into F.
Returns the given argument if cond is false, otherwise, unit lifted into F.

Definition Classes
Applicative
def untilM[G[_], A](f: F[A], cond: ⇒ F[Boolean])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Collects results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def untilM_[A](f: F[A], cond: ⇒ F[Boolean]): F[Unit]
Execute an action repeatedly until the Boolean condition returns true.
Execute an action repeatedly until the Boolean condition returns true. The condition is evaluated after the loop body. Discards results.

Definition Classes
Monad
def void[A](fa: F[A]): F[Unit]
Empty fa of meaningful pure values, preserving its structure.
Empty fa of meaningful pure values, preserving its structure.

Definition Classes
Functor
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
def whenM[A](cond: Boolean)(f: ⇒ F[A]): F[Unit]
Returns the given argument if cond is true, otherwise, unit lifted into F.
Returns the given argument if cond is true, otherwise, unit lifted into F.

Definition Classes
Applicative
def whileM[G[_], A](p: F[Boolean], body: ⇒ F[A])(implicit G: MonadPlus[G]): F[G[A]]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evalated before the loop body. Collects the results into an arbitrary MonadPlus value, such as a List.

Definition Classes
Monad
def whileM_[A](p: F[Boolean], body: ⇒ F[A]): F[Unit]
Execute an action repeatedly as long as the given Boolean expression returns true.
Execute an action repeatedly as long as the given Boolean expression returns true. The condition is evaluated before the loop body. Discards results.

Definition Classes
Monad
def widen[A, B](fa: F[A])(implicit ev: <~<[A, B]): F[B]
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.
Functors are covariant by nature, so we can treat an F[A] as an F[B] if A is a subtype of B.

Definition Classes
Functor
def xmap[A, B](fa: F[A], f: (A) ⇒ B, g: (B) ⇒ A): F[B]
Converts ma to a value of type F[B] using the provided functions f and g.
Converts ma to a value of type F[B] using the provided functions f and g.

Definition Classes
Functor → InvariantFunctor
def xmapb[A, B](ma: F[A])(b: Bijection[A, B]): F[B]
Converts ma to a value of type F[B] using the provided bijection.
Converts ma to a value of type F[B] using the provided bijection.

Definition Classes
InvariantFunctor
def xmapi[A, B](ma: F[A])(iso: Isomorphism.<=>[A, B]): F[B]
Converts ma to a value of type F[B] using the provided isomorphism.
Converts ma to a value of type F[B] using the provided isomorphism.

Definition Classes
InvariantFunctor

Packages

MonadError 

Companion object MonadError

trait MonadError[F[_], S] extends Monad[F]

Type Members

Abstract Value Members

Concrete Value Members

Inherited from Monad[F]

Value Members

Inherited from Bind[F]

Value Members

Inherited from Applicative[F]

Value Members

Inherited from Apply[F]

Value Members

Inherited from Functor[F]

Value Members

Inherited from InvariantFunctor[F]

Value Members

Inherited from AnyRef

Value Members

Inherited from Any

Value Members

Ungrouped

MonadError