[Haskell-cafe] money type ?

Bayley, Alistair Alistair_Bayley at invescoperpetual.co.uk
Thu Jul 12 04:40:04 EDT 2007

> From: haskell-cafe-bounces at haskell.org 
> [mailto:haskell-cafe-bounces at haskell.org] On Behalf Of Simon Michael
> Is there a type or library out there that's good for 
> representing money and 
> other quantities while avoiding rounding errors  ?

I think Data.Fixed would be a good choice:

I don't know /exactly/ how you'd go about adding a Money data type; I
guess you'd have something like:

> data E2 = E2
> instance HasResolution E2 where resolution _ = 100
> type Money = Fixed E2

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