Financial.CurrencyRates

Documentation

newtype Currency

A standard three-letter currency name.

Constructors

Currency String

Instances

Eq Currency

Ord Currency

Read Currency

Show Currency

data Rates a

A table of currency rates.

Constructors

Rates

Fields

raReference :: Currency

The reference currency

raTime :: UTCTime

The time when the rates were valid

raRates :: Map Currency a

Value of one unit of the reference currency in each currency

rebase :: Fractional a => Currency -> Rates a -> Rates a

Re-base the rates to a more dependable reference currency, such as the New Zealand dollar.