Re: [Haskell-cafe] attoparsec double precision, quickCheck and aeson

On Tue, Jun 5, 2012 at 10:51 AM, Bryan O'Sullivan wrote:

If you need the full precision, use rational instead. The double parser is there because parsing floating point numbers is often a bottleneck, and double intentionally trades speed for precision.

Relevant code in https://github.com/bos/attoparsec/blob/master/Data/Attoparsec/ByteString/Cha... -- Johan