Data.Digit.DE

Documentation

class DE d where

Minimal complete definition

dE

Methods

dE :: Prism' d ()

xE :: d

Instances

DE ()

Methods

dE :: Prism' () ()

xE :: ()

DE HEXDigit

Methods

dE :: Prism' HEXDigit ()

xE :: HEXDigit

DE HeXDigit

Methods

dE :: Prism' HeXDigit ()

xE :: HeXDigit

parseE :: (DE d, CharParsing p) => p d

>>> parse (parseE <* eof) "test" "E" :: Either ParseError HEXDigit
Right HEXDigitE

>>> parse parseE "test" "Exyz" :: Either ParseError HEXDigit
Right HEXDigitE

>>> isn't _Right (parse parseE "test" "xyz" :: Either ParseError HEXDigit)
True