Safe Haskell	None
Language	Haskell2010

Data.Digit.DDd

Synopsis

Documentation

type DDd a = (DD a, Dd a) Source #

>>> parse (parseDd <* eof) "test" "D" :: Either ParseError Digit
Right D

>>> parse parseDd "test" "Dxyz" :: Either ParseError Digit
Right D

>>> parse (parseDd <* eof) "test" "d" :: Either ParseError Digit
Right d

>>> parse parseDd "test" "dxyz" :: Either ParseError Digit
Right d

>>> isn't _Right (parse parseDd "test" "xyz" :: Either ParseError Digit)
True

\c -> (c `notElem` "Dd") ==> isn't _Right (parse parseDd "test" [c] :: Either ParseError Digit)