Safe Haskell | None |
---|---|
Language | Haskell2010 |
Foundation.Monad
Synopsis
- class Monad m => MonadIO (m :: Type -> Type) where
- class Monad m => MonadFailure (m :: Type -> Type) where
- class Monad m => MonadThrow (m :: Type -> Type) where
- class MonadThrow m => MonadCatch (m :: Type -> Type) where
- class MonadCatch m => MonadBracket (m :: Type -> Type) where
- generalBracket :: m a -> (a -> b -> m ignored1) -> (a -> SomeException -> m ignored2) -> (a -> m b) -> m b
- class MonadTrans (trans :: (Type -> Type) -> Type -> Type) where
- newtype Identity a = Identity {
- runIdentity :: a
- replicateM :: Applicative m => CountOf a -> m a -> m [a]
Documentation
class Monad m => MonadIO (m :: Type -> Type) where #
Instances
MonadIO IO | |
Defined in Control.Monad.IO.Class | |
MonadIO m => MonadIO (ResourceT m) Source # | |
Defined in Foundation.Conduit.Internal | |
MonadIO m => MonadIO (ExceptT e m) Source # | |
Defined in Foundation.Monad.Except | |
MonadIO m => MonadIO (ReaderT r m) Source # | |
Defined in Foundation.Monad.Reader | |
(Functor m, MonadIO m) => MonadIO (StateT s m) Source # | |
Defined in Foundation.Monad.State | |
MonadIO m => MonadIO (Conduit i o m) Source # | |
Defined in Foundation.Conduit.Internal |
class Monad m => MonadFailure (m :: Type -> Type) where #
Instances
MonadFailure Maybe | |||||
MonadFailure (Either a) | |||||
Monad m => MonadFailure (ExceptT e m) Source # | |||||
MonadFailure m => MonadFailure (ReaderT r m) Source # | |||||
(Functor m, MonadFailure m) => MonadFailure (StateT s m) Source # | |||||
MonadFailure m => MonadFailure (Conduit i o m) Source # | |||||
Monad state => MonadFailure (Builder collection mutCollection step state err) | |||||
Defined in Basement.MutableBuilder Associated Types
|
class Monad m => MonadThrow (m :: Type -> Type) where Source #
Monad that can throw exception
Methods
throw :: Exception e => e -> m a Source #
Throw immediatity an exception.
Only a MonadCatch
monad will be able to catch the exception using catch
Instances
MonadThrow IO Source # | |
MonadThrow m => MonadThrow (ResourceT m) Source # | |
MonadThrow m => MonadThrow (ReaderT r m) Source # | |
(Functor m, MonadThrow m) => MonadThrow (StateT s m) Source # | |
MonadThrow m => MonadThrow (Conduit i o m) Source # | |
class MonadThrow m => MonadCatch (m :: Type -> Type) where Source #
Monad that can catch exception
Instances
MonadCatch IO Source # | |
MonadCatch m => MonadCatch (ResourceT m) Source # | |
MonadCatch m => MonadCatch (ReaderT r m) Source # | |
(Functor m, MonadCatch m) => MonadCatch (StateT s m) Source # | |
MonadCatch m => MonadCatch (Conduit i o m) Source # | |
class MonadCatch m => MonadBracket (m :: Type -> Type) where Source #
Monad that can ensure cleanup actions are performed even in the case of exceptions, both synchronous and asynchronous. This usually excludes continuation-based monads.
Methods
Arguments
:: m a | acquire some resource |
-> (a -> b -> m ignored1) | cleanup, no exception thrown |
-> (a -> SomeException -> m ignored2) | cleanup, some exception thrown. The exception will be rethrown |
-> (a -> m b) | inner action to perform with the resource |
-> m b |
A generalized version of the standard bracket function which allows distinguishing different exit cases.
Instances
MonadBracket IO Source # | |
Defined in Foundation.Monad.Exception Methods generalBracket :: IO a -> (a -> b -> IO ignored1) -> (a -> SomeException -> IO ignored2) -> (a -> IO b) -> IO b Source # | |
MonadBracket m => MonadBracket (ResourceT m) Source # | |
Defined in Foundation.Conduit.Internal Methods generalBracket :: ResourceT m a -> (a -> b -> ResourceT m ignored1) -> (a -> SomeException -> ResourceT m ignored2) -> (a -> ResourceT m b) -> ResourceT m b Source # | |
MonadBracket m => MonadBracket (ReaderT r m) Source # | |
Defined in Foundation.Monad.Reader Methods generalBracket :: ReaderT r m a -> (a -> b -> ReaderT r m ignored1) -> (a -> SomeException -> ReaderT r m ignored2) -> (a -> ReaderT r m b) -> ReaderT r m b Source # |
class MonadTrans (trans :: (Type -> Type) -> Type -> Type) where Source #
Basic Transformer class
Methods
lift :: Monad m => m a -> trans m a Source #
Lift a computation from an inner monad to the current transformer monad
Instances
MonadTrans ResourceT Source # | |
MonadTrans (ExceptT e) Source # | |
MonadTrans (ReaderT r) Source # | |
MonadTrans (StateT s) Source # | |
MonadTrans (Conduit i o) Source # | |
Constructors
Identity | |
Fields
|
Instances
MonadFix Identity | |||||
Defined in Data.Functor.Identity | |||||
MonadZip Identity | |||||
Foldable Identity | |||||
Defined in Data.Functor.Identity Methods fold :: Monoid m => Identity m -> m foldMap :: Monoid m => (a -> m) -> Identity a -> m foldMap' :: Monoid m => (a -> m) -> Identity a -> m foldr :: (a -> b -> b) -> b -> Identity a -> b foldr' :: (a -> b -> b) -> b -> Identity a -> b foldl :: (b -> a -> b) -> b -> Identity a -> b foldl' :: (b -> a -> b) -> b -> Identity a -> b foldr1 :: (a -> a -> a) -> Identity a -> a foldl1 :: (a -> a -> a) -> Identity a -> a elem :: Eq a => a -> Identity a -> Bool maximum :: Ord a => Identity a -> a minimum :: Ord a => Identity a -> a | |||||
Foldable1 Identity | |||||
Defined in Data.Foldable1 Methods fold1 :: Semigroup m => Identity m -> m foldMap1 :: Semigroup m => (a -> m) -> Identity a -> m foldMap1' :: Semigroup m => (a -> m) -> Identity a -> m toNonEmpty :: Identity a -> NonEmpty a maximum :: Ord a => Identity a -> a minimum :: Ord a => Identity a -> a foldrMap1 :: (a -> b) -> (a -> b -> b) -> Identity a -> b foldlMap1' :: (a -> b) -> (b -> a -> b) -> Identity a -> b foldlMap1 :: (a -> b) -> (b -> a -> b) -> Identity a -> b foldrMap1' :: (a -> b) -> (a -> b -> b) -> Identity a -> b | |||||
Eq1 Identity | |||||
Ord1 Identity | |||||
Defined in Data.Functor.Classes Methods liftCompare :: (a -> b -> Ordering) -> Identity a -> Identity b -> Ordering | |||||
Read1 Identity | |||||
Defined in Data.Functor.Classes Methods liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (Identity a) liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [Identity a] liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (Identity a) liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [Identity a] | |||||
Show1 Identity | |||||
Defined in Data.Functor.Classes Methods liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> Identity a -> ShowS liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [Identity a] -> ShowS | |||||
Traversable Identity | |||||
Applicative Identity | |||||
Functor Identity | |||||
Monad Identity | |||||
Generic1 Identity | |||||
Defined in Data.Functor.Identity Associated Types
| |||||
Data a => Data (Identity a) | |||||
Defined in Data.Data Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Identity a -> c (Identity a) gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Identity a) toConstr :: Identity a -> Constr dataTypeOf :: Identity a -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Identity a)) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Identity a)) gmapT :: (forall b. Data b => b -> b) -> Identity a -> Identity a gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Identity a -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Identity a -> r gmapQ :: (forall d. Data d => d -> u) -> Identity a -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> Identity a -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Identity a -> m (Identity a) | |||||
IsString a => IsString (Identity a) | |||||
Defined in Data.String Methods fromString :: String -> Identity a # | |||||
Storable a => Storable (Identity a) | |||||
Defined in Data.Functor.Identity | |||||
Monoid a => Monoid (Identity a) | |||||
Semigroup a => Semigroup (Identity a) | |||||
Bits a => Bits (Identity a) | |||||
Defined in Data.Functor.Identity Methods (.&.) :: Identity a -> Identity a -> Identity a # (.|.) :: Identity a -> Identity a -> Identity a # xor :: Identity a -> Identity a -> Identity a # complement :: Identity a -> Identity a # shift :: Identity a -> Int -> Identity a # rotate :: Identity a -> Int -> Identity a # setBit :: Identity a -> Int -> Identity a # clearBit :: Identity a -> Int -> Identity a # complementBit :: Identity a -> Int -> Identity a # testBit :: Identity a -> Int -> Bool # bitSizeMaybe :: Identity a -> Maybe Int # bitSize :: Identity a -> Int # isSigned :: Identity a -> Bool # shiftL :: Identity a -> Int -> Identity a # unsafeShiftL :: Identity a -> Int -> Identity a # shiftR :: Identity a -> Int -> Identity a # unsafeShiftR :: Identity a -> Int -> Identity a # rotateL :: Identity a -> Int -> Identity a # | |||||
FiniteBits a => FiniteBits (Identity a) | |||||
Defined in Data.Functor.Identity Methods finiteBitSize :: Identity a -> Int countLeadingZeros :: Identity a -> Int countTrailingZeros :: Identity a -> Int | |||||
Bounded a => Bounded (Identity a) | |||||
Enum a => Enum (Identity a) | |||||
Defined in Data.Functor.Identity Methods succ :: Identity a -> Identity a # pred :: Identity a -> Identity a # fromEnum :: Identity a -> Int # enumFrom :: Identity a -> [Identity a] # enumFromThen :: Identity a -> Identity a -> [Identity a] # enumFromTo :: Identity a -> Identity a -> [Identity a] # enumFromThenTo :: Identity a -> Identity a -> Identity a -> [Identity a] # | |||||
Floating a => Floating (Identity a) | |||||
Defined in Data.Functor.Identity Methods exp :: Identity a -> Identity a log :: Identity a -> Identity a sqrt :: Identity a -> Identity a (**) :: Identity a -> Identity a -> Identity a logBase :: Identity a -> Identity a -> Identity a sin :: Identity a -> Identity a cos :: Identity a -> Identity a tan :: Identity a -> Identity a asin :: Identity a -> Identity a acos :: Identity a -> Identity a atan :: Identity a -> Identity a sinh :: Identity a -> Identity a cosh :: Identity a -> Identity a tanh :: Identity a -> Identity a asinh :: Identity a -> Identity a acosh :: Identity a -> Identity a atanh :: Identity a -> Identity a log1p :: Identity a -> Identity a expm1 :: Identity a -> Identity a | |||||
RealFloat a => RealFloat (Identity a) | |||||
Defined in Data.Functor.Identity Methods floatRadix :: Identity a -> Integer floatDigits :: Identity a -> Int floatRange :: Identity a -> (Int, Int) decodeFloat :: Identity a -> (Integer, Int) encodeFloat :: Integer -> Int -> Identity a significand :: Identity a -> Identity a scaleFloat :: Int -> Identity a -> Identity a isInfinite :: Identity a -> Bool isDenormalized :: Identity a -> Bool isNegativeZero :: Identity a -> Bool | |||||
Generic (Identity a) | |||||
Defined in Data.Functor.Identity Associated Types
| |||||
Ix a => Ix (Identity a) | |||||
Defined in Data.Functor.Identity Methods range :: (Identity a, Identity a) -> [Identity a] index :: (Identity a, Identity a) -> Identity a -> Int unsafeIndex :: (Identity a, Identity a) -> Identity a -> Int inRange :: (Identity a, Identity a) -> Identity a -> Bool rangeSize :: (Identity a, Identity a) -> Int unsafeRangeSize :: (Identity a, Identity a) -> Int | |||||
Num a => Num (Identity a) | |||||
Defined in Data.Functor.Identity | |||||
Read a => Read (Identity a) | |||||
Defined in Data.Functor.Identity | |||||
Fractional a => Fractional (Identity a) | |||||
Integral a => Integral (Identity a) | |||||
Defined in Data.Functor.Identity Methods quot :: Identity a -> Identity a -> Identity a rem :: Identity a -> Identity a -> Identity a div :: Identity a -> Identity a -> Identity a mod :: Identity a -> Identity a -> Identity a quotRem :: Identity a -> Identity a -> (Identity a, Identity a) divMod :: Identity a -> Identity a -> (Identity a, Identity a) | |||||
Real a => Real (Identity a) | |||||
Defined in Data.Functor.Identity Methods toRational :: Identity a -> Rational | |||||
RealFrac a => RealFrac (Identity a) | |||||
Show a => Show (Identity a) | |||||
Eq a => Eq (Identity a) | |||||
Ord a => Ord (Identity a) | |||||
Defined in Data.Functor.Identity | |||||
type Rep1 Identity | |||||
Defined in Data.Functor.Identity | |||||
type Rep (Identity a) | |||||
Defined in Data.Functor.Identity |
replicateM :: Applicative m => CountOf a -> m a -> m [a] Source #
performs the action replicateM
n actn
times,
gathering the results.