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Within LTS Haskell 24.49 (ghc-9.10.3)
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fmapMaybe :: Filterable f => (a -> Maybe b) -> f a -> f breflex Reflex.Class Alias for mapMaybe
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reflex Reflex.Class No documentation available.
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reflex Reflex.Class No documentation available.
mapMaybe :: Filterable f => (a -> Maybe b) -> f a -> f breflex Reflex.Class Like mapMaybe.
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No documentation available.
class
FunctorMaybe (f :: Type -> Type)reflex Reflex.FunctorMaybe Deprecated: Use Filterable from Data.Witherable instead
fmapMaybe :: FunctorMaybe f => (a -> Maybe b) -> f a -> f breflex Reflex.FunctorMaybe Combined mapping and filtering function.
heightBagRemoveMaybe :: Height -> HeightBag -> Maybe HeightBagreflex Reflex.Spider.Internal No documentation available.
reifyTypeWithLocals_maybe :: DsMonad q => Name -> q (Maybe Type)th-desugar Language.Haskell.TH.Desugar Like reifyWithLocals_maybe but for types and kinds. Note that a return value of Nothing might mean that the name is not in scope, or it might mean that the full type of the name cannot be determined. (Use reifyWithLocals_maybe if you really need to tell the difference.)
reifyWithLocals_maybe :: DsMonad q => Name -> q (Maybe Info)th-desugar Language.Haskell.TH.Desugar Like reify from Template Haskell, but looks also in any not-yet-typechecked declarations. To establish this list of not-yet-typechecked declarations, use withLocalDeclarations. Returns Nothing if reification fails. Note that no inferred type information is available from local declarations; bottoms may be used if necessary.