[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:
http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-Fixed.ht
ml
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
Alistair
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