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msumFirst :: (MonoidalAlt f, Traversable t) => t (f a) -> f ainvertible Control.Invertible.Monoidal Fold a structure with >| (|<), thus always applying the input to the first (last) item for generation.
msumIndex :: MonoidalAlt f => [f ()] -> f Intinvertible Control.Invertible.Monoidal Try a list of monoidal actions in sequence, producing the index of the first successful action, and evaluating the action with the given index.
msumLast :: (MonoidalAlt f, Traversable t) => t (f a) -> f ainvertible Control.Invertible.Monoidal Fold a structure with >| (|<), thus always applying the input to the first (last) item for generation.
itemSummary :: Item -> Maybe Textjson-feed JsonFeed A plain text sentence or two describing the item. This might be presented in a timeline, for instance, where a detail view would display all of itemContentHtml or itemContentText.
data
DSum (tag :: k -> Type) (f :: k -> Type)lambdabot-core Lambdabot.Main A basic dependent sum type where the first component is a tag that specifies the type of the second. For example, think of a GADT such as:
data Tag a where AString :: Tag String AnInt :: Tag Int Rec :: Tag (DSum Tag Identity)
Then we can write expressions where the RHS of (:=>) has different types depending on the Tag constructor used. Here are some expressions of type DSum Tag Identity:AString :=> Identity "hello!" AnInt :=> Identity 42
Often, the f we choose has an Applicative instance, and we can use the helper function (==>). The following expressions all have the type Applicative f => DSum Tag f:AString ==> "hello!" AnInt ==> 42
We can write functions that consume DSum Tag f values by matching, such as:toString :: DSum Tag Identity -> String toString (AString :=> Identity str) = str toString (AnInt :=> Identity int) = show int toString (Rec :=> Identity sum) = toString sum
The (:=>) constructor and (==>) helper are chosen to resemble the (key => value) construction for dictionary entries in many dynamic languages. The :=> and ==> operators have very low precedence and bind to the right, making repeated use of these operators behave as you'd expect:-- Parses as: Rec ==> (AnInt ==> (3 + 4)) -- Has type: Applicative f => DSum Tag f Rec ==> AnInt ==> 3 + 4
The precedence of these operators is just above that of $, so foo bar $ AString ==> "eep" is equivalent to foo bar (AString ==> "eep"). To use the Eq, Ord, Read, and Show instances for DSum tag f, you will need an ArgDict instance for your tag type. Use deriveArgDict from the constraints-extras package to generate this instance.-
language-c-quote Language.C.Parser.Parser No documentation available.
prettyPrintChecksum :: Checksum -> Doc annlanguage-docker Language.Docker.PrettyPrint No documentation available.
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language-docker Language.Docker.Syntax No documentation available.
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language-docker Language.Docker.Syntax No documentation available.
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language-docker Language.Docker.Syntax No documentation available.