plutus-tx-0.1.0.0: Libraries for Plutus Tx and its prelude
Safe HaskellNone
LanguageHaskell2010

PlutusTx.Either

Synopsis

Documentation

data Either a b Source #

The Either type represents values with two possibilities: a value of type Either a b is either Left a or Right b.

The Either type is sometimes used to represent a value which is either correct or an error; by convention, the Left constructor is used to hold an error value and the Right constructor is used to hold a correct value (mnemonic: "right" also means "correct").

Examples

Expand

The type Either String Int is the type of values which can be either a String or an Int. The Left constructor can be used only on Strings, and the Right constructor can be used only on Ints:

>>> let s = Left "foo" :: Either String Int
>>> s
Left "foo"
>>> let n = Right 3 :: Either String Int
>>> n
Right 3
>>> :type s
s :: Either String Int
>>> :type n
n :: Either String Int

The fmap from our Functor instance will ignore Left values, but will apply the supplied function to values contained in a Right:

>>> let s = Left "foo" :: Either String Int
>>> let n = Right 3 :: Either String Int
>>> fmap (*2) s
Left "foo"
>>> fmap (*2) n
Right 6

The Monad instance for Either allows us to chain together multiple actions which may fail, and fail overall if any of the individual steps failed. First we'll write a function that can either parse an Int from a Char, or fail.

>>> import Data.Char ( digitToInt, isDigit )
>>> :{
    let parseEither :: Char -> Either String Int
        parseEither c
          | isDigit c = Right (digitToInt c)
          | otherwise = Left "parse error"
>>> :}

The following should work, since both '1' and '2' can be parsed as Ints.

>>> :{
    let parseMultiple :: Either String Int
        parseMultiple = do
          x <- parseEither '1'
          y <- parseEither '2'
          return (x + y)
>>> :}
>>> parseMultiple
Right 3

But the following should fail overall, since the first operation where we attempt to parse 'm' as an Int will fail:

>>> :{
    let parseMultiple :: Either String Int
        parseMultiple = do
          x <- parseEither 'm'
          y <- parseEither '2'
          return (x + y)
>>> :}
>>> parseMultiple
Left "parse error"

Constructors

Left a 
Right b 

Instances

Instances details
ToJSON2 Either 
Instance details

Defined in Data.Aeson.Types.ToJSON

Methods

liftToJSON2 :: (a -> Value) -> ([a] -> Value) -> (b -> Value) -> ([b] -> Value) -> Either a b -> Value Source #

liftToJSONList2 :: (a -> Value) -> ([a] -> Value) -> (b -> Value) -> ([b] -> Value) -> [Either a b] -> Value Source #

liftToEncoding2 :: (a -> Encoding) -> ([a] -> Encoding) -> (b -> Encoding) -> ([b] -> Encoding) -> Either a b -> Encoding Source #

liftToEncodingList2 :: (a -> Encoding) -> ([a] -> Encoding) -> (b -> Encoding) -> ([b] -> Encoding) -> [Either a b] -> Encoding Source #

FromJSON2 Either 
Instance details

Defined in Data.Aeson.Types.FromJSON

Methods

liftParseJSON2 :: (Value -> Parser a) -> (Value -> Parser [a]) -> (Value -> Parser b) -> (Value -> Parser [b]) -> Value -> Parser (Either a b) Source #

liftParseJSONList2 :: (Value -> Parser a) -> (Value -> Parser [a]) -> (Value -> Parser b) -> (Value -> Parser [b]) -> Value -> Parser [Either a b] Source #

Bifunctor Either

Since: base-4.8.0.0

Instance details

Defined in Data.Bifunctor

Methods

bimap :: (a -> b) -> (c -> d) -> Either a c -> Either b d Source #

first :: (a -> b) -> Either a c -> Either b c Source #

second :: (b -> c) -> Either a b -> Either a c Source #

Eq2 Either

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftEq2 :: (a -> b -> Bool) -> (c -> d -> Bool) -> Either a c -> Either b d -> Bool Source #

Ord2 Either

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftCompare2 :: (a -> b -> Ordering) -> (c -> d -> Ordering) -> Either a c -> Either b d -> Ordering Source #

Read2 Either

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftReadsPrec2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> Int -> ReadS (Either a b) Source #

liftReadList2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> ReadS [Either a b] Source #

liftReadPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec (Either a b) Source #

liftReadListPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec [Either a b] Source #

Show2 Either

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftShowsPrec2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> Int -> Either a b -> ShowS Source #

liftShowList2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> [Either a b] -> ShowS Source #

NFData2 Either

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

liftRnf2 :: (a -> ()) -> (b -> ()) -> Either a b -> () Source #

Hashable2 Either 
Instance details

Defined in Data.Hashable.Class

Methods

liftHashWithSalt2 :: (Int -> a -> Int) -> (Int -> b -> Int) -> Int -> Either a b -> Int Source #

Bitraversable1 Either 
Instance details

Defined in Data.Semigroup.Traversable.Class

Methods

bitraverse1 :: Apply f => (a -> f b) -> (c -> f d) -> Either a c -> f (Either b d) Source #

bisequence1 :: Apply f => Either (f a) (f b) -> f (Either a b) Source #

Swapped Either 
Instance details

Defined in Control.Lens.Iso

Methods

swapped :: Iso (Either a b) (Either c d) (Either b a) (Either d c) Source #

MonadError e (Either e) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> Either e a Source #

catchError :: Either e a -> (e -> Either e a) -> Either e a Source #

(Lift a, Lift b) => Lift (Either a b :: Type) 
Instance details

Defined in Language.Haskell.TH.Syntax

Methods

lift :: Either a b -> Q Exp Source #

liftTyped :: Either a b -> Q (TExp (Either a b)) Source #

(Typeable DefaultUni a, Typeable DefaultUni b, Lift DefaultUni a, Lift DefaultUni b) => Lift DefaultUni (Either a b) Source # 
Instance details

Defined in PlutusTx.Lift.Instances

Monad (Either e)

Since: base-4.4.0.0

Instance details

Defined in Data.Either

Methods

(>>=) :: Either e a -> (a -> Either e b) -> Either e b Source #

(>>) :: Either e a -> Either e b -> Either e b Source #

return :: a -> Either e a Source #

Functor (Either a)

Since: base-3.0

Instance details

Defined in Data.Either

Methods

fmap :: (a0 -> b) -> Either a a0 -> Either a b Source #

(<$) :: a0 -> Either a b -> Either a a0 Source #

MonadFix (Either e)

Since: base-4.3.0.0

Instance details

Defined in Control.Monad.Fix

Methods

mfix :: (a -> Either e a) -> Either e a Source #

Applicative (Either e)

Since: base-3.0

Instance details

Defined in Data.Either

Methods

pure :: a -> Either e a Source #

(<*>) :: Either e (a -> b) -> Either e a -> Either e b Source #

liftA2 :: (a -> b -> c) -> Either e a -> Either e b -> Either e c Source #

(*>) :: Either e a -> Either e b -> Either e b Source #

(<*) :: Either e a -> Either e b -> Either e a Source #

Foldable (Either a)

Since: base-4.7.0.0

Instance details

Defined in Data.Foldable

Methods

fold :: Monoid m => Either a m -> m Source #

foldMap :: Monoid m => (a0 -> m) -> Either a a0 -> m Source #

foldMap' :: Monoid m => (a0 -> m) -> Either a a0 -> m Source #

foldr :: (a0 -> b -> b) -> b -> Either a a0 -> b Source #

foldr' :: (a0 -> b -> b) -> b -> Either a a0 -> b Source #

foldl :: (b -> a0 -> b) -> b -> Either a a0 -> b Source #

foldl' :: (b -> a0 -> b) -> b -> Either a a0 -> b Source #

foldr1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 Source #

foldl1 :: (a0 -> a0 -> a0) -> Either a a0 -> a0 Source #

toList :: Either a a0 -> [a0] Source #

null :: Either a a0 -> Bool Source #

length :: Either a a0 -> Int Source #

elem :: Eq a0 => a0 -> Either a a0 -> Bool Source #

maximum :: Ord a0 => Either a a0 -> a0 Source #

minimum :: Ord a0 => Either a a0 -> a0 Source #

sum :: Num a0 => Either a a0 -> a0 Source #

product :: Num a0 => Either a a0 -> a0 Source #

Traversable (Either a)

Since: base-4.7.0.0

Instance details

Defined in Data.Traversable

Methods

traverse :: Applicative f => (a0 -> f b) -> Either a a0 -> f (Either a b) Source #

sequenceA :: Applicative f => Either a (f a0) -> f (Either a a0) Source #

mapM :: Monad m => (a0 -> m b) -> Either a a0 -> m (Either a b) Source #

sequence :: Monad m => Either a (m a0) -> m (Either a a0) Source #

ToJSON a => ToJSON1 (Either a) 
Instance details

Defined in Data.Aeson.Types.ToJSON

Methods

liftToJSON :: (a0 -> Value) -> ([a0] -> Value) -> Either a a0 -> Value Source #

liftToJSONList :: (a0 -> Value) -> ([a0] -> Value) -> [Either a a0] -> Value Source #

liftToEncoding :: (a0 -> Encoding) -> ([a0] -> Encoding) -> Either a a0 -> Encoding Source #

liftToEncodingList :: (a0 -> Encoding) -> ([a0] -> Encoding) -> [Either a a0] -> Encoding Source #

FromJSON a => FromJSON1 (Either a) 
Instance details

Defined in Data.Aeson.Types.FromJSON

Methods

liftParseJSON :: (Value -> Parser a0) -> (Value -> Parser [a0]) -> Value -> Parser (Either a a0) Source #

liftParseJSONList :: (Value -> Parser a0) -> (Value -> Parser [a0]) -> Value -> Parser [Either a a0] Source #

Eq a => Eq1 (Either a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftEq :: (a0 -> b -> Bool) -> Either a a0 -> Either a b -> Bool Source #

Ord a => Ord1 (Either a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftCompare :: (a0 -> b -> Ordering) -> Either a a0 -> Either a b -> Ordering Source #

Show a => Show1 (Either a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftShowsPrec :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> Int -> Either a a0 -> ShowS Source #

liftShowList :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> [Either a a0] -> ShowS Source #

Read a => Read1 (Either a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftReadsPrec :: (Int -> ReadS a0) -> ReadS [a0] -> Int -> ReadS (Either a a0) Source #

liftReadList :: (Int -> ReadS a0) -> ReadS [a0] -> ReadS [Either a a0] Source #

liftReadPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec (Either a a0) Source #

liftReadListPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec [Either a a0] Source #

MonadFailure (Either a) 
Instance details

Defined in Basement.Monad

Associated Types

type Failure (Either a) Source #

Methods

mFail :: Failure (Either a) -> Either a () Source #

NFData a => NFData1 (Either a)

Since: deepseq-1.4.3.0

Instance details

Defined in Control.DeepSeq

Methods

liftRnf :: (a0 -> ()) -> Either a a0 -> () Source #

Hashable a => Hashable1 (Either a) 
Instance details

Defined in Data.Hashable.Class

Methods

liftHashWithSalt :: (Int -> a0 -> Int) -> Int -> Either a a0 -> Int Source #

Functor (Either c) Source # 
Instance details

Defined in PlutusTx.Functor

Methods

fmap :: (a -> b) -> Either c a -> Either c b Source #

Applicative (Either a) Source # 
Instance details

Defined in PlutusTx.Applicative

Methods

pure :: a0 -> Either a a0 Source #

(<*>) :: Either a (a0 -> b) -> Either a a0 -> Either a b Source #

Foldable (Either c) Source # 
Instance details

Defined in PlutusTx.Foldable

Methods

foldMap :: Monoid m => (a -> m) -> Either c a -> m Source #

Traversable (Either c) Source # 
Instance details

Defined in PlutusTx.Traversable

Methods

traverse :: Applicative f => (a -> f b) -> Either c a -> f (Either c b) Source #

Generic1 (Either a :: Type -> Type)

Since: base-4.6.0.0

Instance details

Defined in GHC.Generics

Associated Types

type Rep1 (Either a) :: k -> Type Source #

Methods

from1 :: forall (a0 :: k). Either a a0 -> Rep1 (Either a) a0 Source #

to1 :: forall (a0 :: k). Rep1 (Either a) a0 -> Either a a0 Source #

MonadBaseControl (Either e) (Either e) 
Instance details

Defined in Control.Monad.Trans.Control

Associated Types

type StM (Either e) a Source #

Methods

liftBaseWith :: (RunInBase (Either e) (Either e) -> Either e a) -> Either e a Source #

restoreM :: StM (Either e) a -> Either e a Source #

(Eq a, Eq b) => Eq (Either a b)

Since: base-2.1

Instance details

Defined in Data.Either

Methods

(==) :: Either a b -> Either a b -> Bool Source #

(/=) :: Either a b -> Either a b -> Bool Source #

(Data a, Data b) => Data (Either a b)

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b0. Data d => c (d -> b0) -> d -> c b0) -> (forall g. g -> c g) -> Either a b -> c (Either a b) Source #

gunfold :: (forall b0 r. Data b0 => c (b0 -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Either a b) Source #

toConstr :: Either a b -> Constr Source #

dataTypeOf :: Either a b -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Either a b)) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Either a b)) Source #

gmapT :: (forall b0. Data b0 => b0 -> b0) -> Either a b -> Either a b Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Either a b -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Either a b -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Either a b -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Either a b -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Either a b -> m (Either a b) Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Either a b -> m (Either a b) Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Either a b -> m (Either a b) Source #

(Ord a, Ord b) => Ord (Either a b)

Since: base-2.1

Instance details

Defined in Data.Either

Methods

compare :: Either a b -> Either a b -> Ordering Source #

(<) :: Either a b -> Either a b -> Bool Source #

(<=) :: Either a b -> Either a b -> Bool Source #

(>) :: Either a b -> Either a b -> Bool Source #

(>=) :: Either a b -> Either a b -> Bool Source #

max :: Either a b -> Either a b -> Either a b Source #

min :: Either a b -> Either a b -> Either a b Source #

(Read a, Read b) => Read (Either a b)

Since: base-3.0

Instance details

Defined in Data.Either

(Show a, Show b) => Show (Either a b)

Since: base-3.0

Instance details

Defined in Data.Either

Methods

showsPrec :: Int -> Either a b -> ShowS Source #

show :: Either a b -> String Source #

showList :: [Either a b] -> ShowS Source #

Generic (Either a b)

Since: base-4.6.0.0

Instance details

Defined in GHC.Generics

Associated Types

type Rep (Either a b) :: Type -> Type Source #

Methods

from :: Either a b -> Rep (Either a b) x Source #

to :: Rep (Either a b) x -> Either a b Source #

Semigroup (Either a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Either

Methods

(<>) :: Either a b -> Either a b -> Either a b Source #

sconcat :: NonEmpty (Either a b) -> Either a b Source #

stimes :: Integral b0 => b0 -> Either a b -> Either a b Source #

(Hashable a, Hashable b) => Hashable (Either a b) 
Instance details

Defined in Data.Hashable.Class

Methods

hashWithSalt :: Int -> Either a b -> Int Source #

hash :: Either a b -> Int Source #

(ToJSON a, ToJSON b) => ToJSON (Either a b) 
Instance details

Defined in Data.Aeson.Types.ToJSON

(FromJSON a, FromJSON b) => FromJSON (Either a b) 
Instance details

Defined in Data.Aeson.Types.FromJSON

(NFData a, NFData b) => NFData (Either a b) 
Instance details

Defined in Control.DeepSeq

Methods

rnf :: Either a b -> () Source #

MonoFunctor (Either a b) 
Instance details

Defined in Data.MonoTraversable

Methods

omap :: (Element (Either a b) -> Element (Either a b)) -> Either a b -> Either a b Source #

MonoFoldable (Either a b) 
Instance details

Defined in Data.MonoTraversable

Methods

ofoldMap :: Monoid m => (Element (Either a b) -> m) -> Either a b -> m Source #

ofoldr :: (Element (Either a b) -> b0 -> b0) -> b0 -> Either a b -> b0 Source #

ofoldl' :: (a0 -> Element (Either a b) -> a0) -> a0 -> Either a b -> a0 Source #

otoList :: Either a b -> [Element (Either a b)] Source #

oall :: (Element (Either a b) -> Bool) -> Either a b -> Bool Source #

oany :: (Element (Either a b) -> Bool) -> Either a b -> Bool Source #

onull :: Either a b -> Bool Source #

olength :: Either a b -> Int Source #

olength64 :: Either a b -> Int64 Source #

ocompareLength :: Integral i => Either a b -> i -> Ordering Source #

otraverse_ :: Applicative f => (Element (Either a b) -> f b0) -> Either a b -> f () Source #

ofor_ :: Applicative f => Either a b -> (Element (Either a b) -> f b0) -> f () Source #

omapM_ :: Applicative m => (Element (Either a b) -> m ()) -> Either a b -> m () Source #

oforM_ :: Applicative m => Either a b -> (Element (Either a b) -> m ()) -> m () Source #

ofoldlM :: Monad m => (a0 -> Element (Either a b) -> m a0) -> a0 -> Either a b -> m a0 Source #

ofoldMap1Ex :: Semigroup m => (Element (Either a b) -> m) -> Either a b -> m Source #

ofoldr1Ex :: (Element (Either a b) -> Element (Either a b) -> Element (Either a b)) -> Either a b -> Element (Either a b) Source #

ofoldl1Ex' :: (Element (Either a b) -> Element (Either a b) -> Element (Either a b)) -> Either a b -> Element (Either a b) Source #

headEx :: Either a b -> Element (Either a b) Source #

lastEx :: Either a b -> Element (Either a b) Source #

unsafeHead :: Either a b -> Element (Either a b) Source #

unsafeLast :: Either a b -> Element (Either a b) Source #

maximumByEx :: (Element (Either a b) -> Element (Either a b) -> Ordering) -> Either a b -> Element (Either a b) Source #

minimumByEx :: (Element (Either a b) -> Element (Either a b) -> Ordering) -> Either a b -> Element (Either a b) Source #

oelem :: Element (Either a b) -> Either a b -> Bool Source #

onotElem :: Element (Either a b) -> Either a b -> Bool Source #

MonoTraversable (Either a b) 
Instance details

Defined in Data.MonoTraversable

Methods

otraverse :: Applicative f => (Element (Either a b) -> f (Element (Either a b))) -> Either a b -> f (Either a b) Source #

omapM :: Applicative m => (Element (Either a b) -> m (Element (Either a b))) -> Either a b -> m (Either a b) Source #

MonoPointed (Either a b) 
Instance details

Defined in Data.MonoTraversable

Methods

opoint :: Element (Either a b) -> Either a b Source #

Recursive (Either a b) 
Instance details

Defined in Data.Functor.Foldable

Methods

project :: Either a b -> Base (Either a b) (Either a b) Source #

cata :: (Base (Either a b) a0 -> a0) -> Either a b -> a0 Source #

para :: (Base (Either a b) (Either a b, a0) -> a0) -> Either a b -> a0 Source #

gpara :: (Corecursive (Either a b), Comonad w) => (forall b0. Base (Either a b) (w b0) -> w (Base (Either a b) b0)) -> (Base (Either a b) (EnvT (Either a b) w a0) -> a0) -> Either a b -> a0 Source #

prepro :: Corecursive (Either a b) => (forall b0. Base (Either a b) b0 -> Base (Either a b) b0) -> (Base (Either a b) a0 -> a0) -> Either a b -> a0 Source #

gprepro :: (Corecursive (Either a b), Comonad w) => (forall b0. Base (Either a b) (w b0) -> w (Base (Either a b) b0)) -> (forall c. Base (Either a b) c -> Base (Either a b) c) -> (Base (Either a b) (w a0) -> a0) -> Either a b -> a0 Source #

Corecursive (Either a b) 
Instance details

Defined in Data.Functor.Foldable

Methods

embed :: Base (Either a b) (Either a b) -> Either a b Source #

ana :: (a0 -> Base (Either a b) a0) -> a0 -> Either a b Source #

apo :: (a0 -> Base (Either a b) (Either (Either a b) a0)) -> a0 -> Either a b Source #

postpro :: Recursive (Either a b) => (forall b0. Base (Either a b) b0 -> Base (Either a b) b0) -> (a0 -> Base (Either a b) a0) -> a0 -> Either a b Source #

gpostpro :: (Recursive (Either a b), Monad m) => (forall b0. m (Base (Either a b) b0) -> Base (Either a b) (m b0)) -> (forall c. Base (Either a b) c -> Base (Either a b) c) -> (a0 -> Base (Either a b) (m a0)) -> a0 -> Either a b Source #

(Serialise a, Serialise b) => Serialise (Either a b)

Since: serialise-0.2.0.0

Instance details

Defined in Codec.Serialise.Class

(Eq a, Eq b) => Eq (Either a b) Source # 
Instance details

Defined in PlutusTx.Eq

Methods

(==) :: Either a b -> Either a b -> Bool Source #

(Ord a, Ord b) => Ord (Either a b) Source # 
Instance details

Defined in PlutusTx.Ord

Methods

compare :: Either a b -> Either a b -> Ordering Source #

(<) :: Either a b -> Either a b -> Bool Source #

(<=) :: Either a b -> Either a b -> Bool Source #

(>) :: Either a b -> Either a b -> Bool Source #

(>=) :: Either a b -> Either a b -> Bool Source #

max :: Either a b -> Either a b -> Either a b Source #

min :: Either a b -> Either a b -> Either a b Source #

(UnsafeFromData a, UnsafeFromData b) => UnsafeFromData (Either a b) Source # 
Instance details

Defined in PlutusTx.IsData.Instances

(FromData a, FromData b) => FromData (Either a b) Source # 
Instance details

Defined in PlutusTx.IsData.Instances

(ToData a, ToData b) => ToData (Either a b) Source # 
Instance details

Defined in PlutusTx.IsData.Instances

Typeable DefaultUni Either Source # 
Instance details

Defined in PlutusTx.Lift.Instances

(a ~ a', b ~ b') => Each (Either a a') (Either b b') a b
each :: Traversal (Either a a) (Either b b) a b

Since: lens-4.18

Instance details

Defined in Control.Lens.Each

Methods

each :: Traversal (Either a a') (Either b b') a b Source #

(a ~ a', b ~ b') => Each (Either a a') (Either b b') a b

Since: microlens-0.4.11

Instance details

Defined in Lens.Micro.Internal

Methods

each :: Traversal (Either a a') (Either b b') a b Source #

(FunctorWithIndex i f, FunctorWithIndex j g) => FunctorWithIndex (Either i j) (Sum f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

imap :: (Either i j -> a -> b) -> Sum f g a -> Sum f g b Source #

imapped :: IndexedSetter (Either i j) (Sum f g a) (Sum f g b) a b Source #

(FunctorWithIndex i f, FunctorWithIndex j g) => FunctorWithIndex (Either i j) (Product f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

imap :: (Either i j -> a -> b) -> Product f g a -> Product f g b Source #

imapped :: IndexedSetter (Either i j) (Product f g a) (Product f g b) a b Source #

(FunctorWithIndex i f, FunctorWithIndex j g) => FunctorWithIndex (Either i j) (f :+: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

imap :: (Either i j -> a -> b) -> (f :+: g) a -> (f :+: g) b Source #

imapped :: IndexedSetter (Either i j) ((f :+: g) a) ((f :+: g) b) a b Source #

(FunctorWithIndex i f, FunctorWithIndex j g) => FunctorWithIndex (Either i j) (f :*: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

imap :: (Either i j -> a -> b) -> (f :*: g) a -> (f :*: g) b Source #

imapped :: IndexedSetter (Either i j) ((f :*: g) a) ((f :*: g) b) a b Source #

(FoldableWithIndex i f, FoldableWithIndex j g) => FoldableWithIndex (Either i j) (Sum f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

ifoldMap :: Monoid m => (Either i j -> a -> m) -> Sum f g a -> m Source #

ifolded :: IndexedFold (Either i j) (Sum f g a) a Source #

ifoldr :: (Either i j -> a -> b -> b) -> b -> Sum f g a -> b Source #

ifoldl :: (Either i j -> b -> a -> b) -> b -> Sum f g a -> b Source #

ifoldr' :: (Either i j -> a -> b -> b) -> b -> Sum f g a -> b Source #

ifoldl' :: (Either i j -> b -> a -> b) -> b -> Sum f g a -> b Source #

(FoldableWithIndex i f, FoldableWithIndex j g) => FoldableWithIndex (Either i j) (Product f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

ifoldMap :: Monoid m => (Either i j -> a -> m) -> Product f g a -> m Source #

ifolded :: IndexedFold (Either i j) (Product f g a) a Source #

ifoldr :: (Either i j -> a -> b -> b) -> b -> Product f g a -> b Source #

ifoldl :: (Either i j -> b -> a -> b) -> b -> Product f g a -> b Source #

ifoldr' :: (Either i j -> a -> b -> b) -> b -> Product f g a -> b Source #

ifoldl' :: (Either i j -> b -> a -> b) -> b -> Product f g a -> b Source #

(FoldableWithIndex i f, FoldableWithIndex j g) => FoldableWithIndex (Either i j) (f :+: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

ifoldMap :: Monoid m => (Either i j -> a -> m) -> (f :+: g) a -> m Source #

ifolded :: IndexedFold (Either i j) ((f :+: g) a) a Source #

ifoldr :: (Either i j -> a -> b -> b) -> b -> (f :+: g) a -> b Source #

ifoldl :: (Either i j -> b -> a -> b) -> b -> (f :+: g) a -> b Source #

ifoldr' :: (Either i j -> a -> b -> b) -> b -> (f :+: g) a -> b Source #

ifoldl' :: (Either i j -> b -> a -> b) -> b -> (f :+: g) a -> b Source #

(FoldableWithIndex i f, FoldableWithIndex j g) => FoldableWithIndex (Either i j) (f :*: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

ifoldMap :: Monoid m => (Either i j -> a -> m) -> (f :*: g) a -> m Source #

ifolded :: IndexedFold (Either i j) ((f :*: g) a) a Source #

ifoldr :: (Either i j -> a -> b -> b) -> b -> (f :*: g) a -> b Source #

ifoldl :: (Either i j -> b -> a -> b) -> b -> (f :*: g) a -> b Source #

ifoldr' :: (Either i j -> a -> b -> b) -> b -> (f :*: g) a -> b Source #

ifoldl' :: (Either i j -> b -> a -> b) -> b -> (f :*: g) a -> b Source #

(TraversableWithIndex i f, TraversableWithIndex j g) => TraversableWithIndex (Either i j) (Sum f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

itraverse :: Applicative f0 => (Either i j -> a -> f0 b) -> Sum f g a -> f0 (Sum f g b) Source #

itraversed :: IndexedTraversal (Either i j) (Sum f g a) (Sum f g b) a b Source #

(TraversableWithIndex i f, TraversableWithIndex j g) => TraversableWithIndex (Either i j) (Product f g) 
Instance details

Defined in Control.Lens.Indexed

Methods

itraverse :: Applicative f0 => (Either i j -> a -> f0 b) -> Product f g a -> f0 (Product f g b) Source #

itraversed :: IndexedTraversal (Either i j) (Product f g a) (Product f g b) a b Source #

(TraversableWithIndex i f, TraversableWithIndex j g) => TraversableWithIndex (Either i j) (f :+: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

itraverse :: Applicative f0 => (Either i j -> a -> f0 b) -> (f :+: g) a -> f0 ((f :+: g) b) Source #

itraversed :: IndexedTraversal (Either i j) ((f :+: g) a) ((f :+: g) b) a b Source #

(TraversableWithIndex i f, TraversableWithIndex j g) => TraversableWithIndex (Either i j) (f :*: g) 
Instance details

Defined in Control.Lens.Indexed

Methods

itraverse :: Applicative f0 => (Either i j -> a -> f0 b) -> (f :*: g) a -> f0 ((f :*: g) b) Source #

itraversed :: IndexedTraversal (Either i j) ((f :*: g) a) ((f :*: g) b) a b Source #

type Failure (Either a) 
Instance details

Defined in Basement.Monad

type Failure (Either a) = a
type StM (Either e) a 
Instance details

Defined in Control.Monad.Trans.Control

type StM (Either e) a = a
type Rep1 (Either a :: Type -> Type) 
Instance details

Defined in GHC.Generics

type Rep (Either a b) 
Instance details

Defined in GHC.Generics

type Element (Either a b) 
Instance details

Defined in Data.MonoTraversable

type Element (Either a b) = b
type Base (Either a b)

Example boring stub for non-recursive data types

Instance details

Defined in Data.Functor.Foldable

type Base (Either a b) = Const (Either a b) :: Type -> Type

isLeft :: Either a b -> Bool Source #

Return True if the given value is a Left-value, False otherwise.

isRight :: Either a b -> Bool Source #

Return True if the given value is a Right-value, False otherwise.

either :: (a -> c) -> (b -> c) -> Either a b -> c Source #

Plutus Tx version of either