Text.Display

An instance Display is similar to an instance of Show. The difference is that -- Show is meant to return well-formed haskell expressions and a complementary Read instance should be possible. Display is meant for human-readable output. For instance, you could have a complex data structure output a chart by default in GHCi, while still being able to derive an instance of Show to inspect the data structure when needed.

Types

class Display a where

Minimal complete definition

display

Methods

display :: a -> DisplayText

Instances

Show a => Display a

Methods

display :: a -> DisplayText

data DisplayText

Instances

Eq DisplayText

Methods

(==) :: DisplayText -> DisplayText -> Bool

(/=) :: DisplayText -> DisplayText -> Bool

Show DisplayText

Methods

showsPrec :: Int -> DisplayText -> ShowS

show :: DisplayText -> String

showList :: [DisplayText] -> ShowS

Converting to the DisplayText type

mkDisplayText :: Text -> DisplayText

Wrap Text into a DisplayText.

unDisplayText :: DisplayText -> Text

Unwrap DisplayText to a Text.

mkDt :: Text -> DisplayText

Alias for mkDt

unDt :: DisplayText -> Text

Alias for unDisplayText

mkDisplayTextStr :: String -> DisplayText

Wrap String into a DisplayText.

unDisplayTextStr :: DisplayText -> String

Unwrap DisplayText to a String.

mkDtStr :: String -> DisplayText

Alias for mkDisplayTextStr

unDtStr :: DisplayText -> String

Alias for unDisplayTextStr

Rendering the Display class

dShow :: Display a => a -> Text

Convert Display instance into Text.

dPrint :: Display a => a -> IO ()

Print Display instance.

Re-exports

ppShow :: Show a => a -> String

Convert a generic value into a pretty String, if possible.

pPrint :: Show a => a -> IO ()

Pretty print Show instance.