Reflex.FunctorMaybe

Documentation

class FunctorMaybe f where

Deprecated: Use Filterable from Data.Witherable instead

A class for values that combines filtering and mapping using Maybe. Morally, FunctorMaybe ~ KleisliFunctor Maybe.

Methods

fmapMaybe :: (a -> Maybe b) -> f a -> f b

Combined mapping and filtering function.

Instances

FunctorMaybe []

Defined in Reflex.FunctorMaybe

Methods

fmapMaybe :: (a -> Maybe b) -> [a] -> [b]

FunctorMaybe Maybe

Defined in Reflex.FunctorMaybe

Methods

fmapMaybe :: (a -> Maybe b) -> Maybe a -> Maybe b

FunctorMaybe Option

Defined in Reflex.FunctorMaybe

Methods

fmapMaybe :: (a -> Maybe b) -> Option a -> Option b

FunctorMaybe IntMap

Defined in Reflex.FunctorMaybe

Methods

fmapMaybe :: (a -> Maybe b) -> IntMap a -> IntMap b

FunctorMaybe (Map k)

Defined in Reflex.FunctorMaybe

Methods

fmapMaybe :: (a -> Maybe b) -> Map k a -> Map k b

Reflex t => FunctorMaybe (Event t)

Defined in Reflex.Class

Methods

fmapMaybe :: (a -> Maybe b) -> Event t a -> Event t b