Data.Digit.Db

Documentation

class Db d where

Minimal complete definition

db

Methods

db :: Prism' d ()

xb :: d

Instances

Db ()

Methods

db :: Prism' () ()

xb :: ()

Db HeXDigit

Methods

db :: Prism' HeXDigit ()

xb :: HeXDigit

Db HexDigit

Methods

db :: Prism' HexDigit ()

xb :: HexDigit

parseb :: (Db d, CharParsing p) => p d

>>> parse (parseb <* eof) "test" "b" :: Either ParseError HexDigit
Right HexDigitb

>>> parse parseb "test" "bxyz" :: Either ParseError HexDigit
Right HexDigitb

>>> isn't _Right (parse parseb "test" "xyz" :: Either ParseError HexDigit)
True