Data.Distance

Documentation

data Distance

An abstract distance. Use the provided smart constructors to create a meaningful distance. Note that on first sight a Num instance might seem desirable, but this would defeat the purpose of having transparent and explicitly constructed distances due to fromInteger.

Instances

Eq Distance

Methods

(==) :: Distance -> Distance -> Bool

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

Ord Distance

Methods

compare :: Distance -> Distance -> Ordering

(<) :: Distance -> Distance -> Bool

(<=) :: Distance -> Distance -> Bool

(>) :: Distance -> Distance -> Bool

(>=) :: Distance -> Distance -> Bool

max :: Distance -> Distance -> Distance

min :: Distance -> Distance -> Distance

Show Distance

Methods

showsPrec :: Int -> Distance -> ShowS

show :: Distance -> String

showList :: [Distance] -> ShowS

Monoid Distance

An empty Distance is 0, and mappend is defined as addition

Methods

mempty :: Distance

mappend :: Distance -> Distance -> Distance

mconcat :: [Distance] -> Distance

meters :: Double -> Distance

centimeters :: Double -> Distance

millimeters :: Double -> Distance

kilometers :: Double -> Distance

toMeters :: Distance -> Double

toCentimeters :: Distance -> Double

toMillimeters :: Distance -> Double

toKilometers :: Distance -> Double