Safe Haskell	None
Language	Haskell2010

Euler.Util.NumberWords

Description

English-language representations of integers, used by Euler problem 17.

Synopsis

word :: (MonadThrow m, IsString w, Semigroup (m w)) => Natural -> m w
data NumberWordException = WordUnknown Natural
data LetterCount
getLetterCount :: LetterCount -> Natural

Documentation

word :: (MonadThrow m, IsString w, Semigroup (m w)) => Natural -> m w Source #

>>> word 21 :: Maybe String
Just "twenty-one"

>>> word 300 :: Maybe String
Just "three hundred"

>>> word 645 :: Maybe String
Just "six hundred and forty-five"

data NumberWordException Source #

Constructors

WordUnknown Natural

Instances

Eq NumberWordException Source #
Instance details Defined in Euler.Util.NumberWords Methods (==) :: NumberWordException -> NumberWordException -> Bool # (/=) :: NumberWordException -> NumberWordException -> Bool #
Ord NumberWordException Source #
Instance details Defined in Euler.Util.NumberWords Methods compare :: NumberWordException -> NumberWordException -> Ordering # (<) :: NumberWordException -> NumberWordException -> Bool # (<=) :: NumberWordException -> NumberWordException -> Bool # (>) :: NumberWordException -> NumberWordException -> Bool # (>=) :: NumberWordException -> NumberWordException -> Bool # max :: NumberWordException -> NumberWordException -> NumberWordException # min :: NumberWordException -> NumberWordException -> NumberWordException #
Show NumberWordException Source #
Instance details Defined in Euler.Util.NumberWords Methods showsPrec :: Int -> NumberWordException -> ShowS # show :: NumberWordException -> String # showList :: [NumberWordException] -> ShowS #
Exception NumberWordException Source #
Instance details Defined in Euler.Util.NumberWords Methods toException :: NumberWordException -> SomeException # fromException :: SomeException -> Maybe NumberWordException # displayException :: NumberWordException -> String #

data LetterCount Source #

Instances

Eq LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods (==) :: LetterCount -> LetterCount -> Bool # (/=) :: LetterCount -> LetterCount -> Bool #
Num LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods (+) :: LetterCount -> LetterCount -> LetterCount # (-) :: LetterCount -> LetterCount -> LetterCount # (*) :: LetterCount -> LetterCount -> LetterCount # negate :: LetterCount -> LetterCount # abs :: LetterCount -> LetterCount # signum :: LetterCount -> LetterCount # fromInteger :: Integer -> LetterCount #
Ord LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods compare :: LetterCount -> LetterCount -> Ordering # (<) :: LetterCount -> LetterCount -> Bool # (<=) :: LetterCount -> LetterCount -> Bool # (>) :: LetterCount -> LetterCount -> Bool # (>=) :: LetterCount -> LetterCount -> Bool # max :: LetterCount -> LetterCount -> LetterCount # min :: LetterCount -> LetterCount -> LetterCount #
Show LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods showsPrec :: Int -> LetterCount -> ShowS # show :: LetterCount -> String # showList :: [LetterCount] -> ShowS #
IsString LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods fromString :: String -> LetterCount #
Semigroup LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods (<>) :: LetterCount -> LetterCount -> LetterCount # sconcat :: NonEmpty LetterCount -> LetterCount # stimes :: Integral b => b -> LetterCount -> LetterCount #
Monoid LetterCount Source #
Instance details Defined in Euler.Util.NumberWords Methods mempty :: LetterCount # mappend :: LetterCount -> LetterCount -> LetterCount # mconcat :: [LetterCount] -> LetterCount #

getLetterCount :: LetterCount -> Natural Source #