If you use read (reads) and show for the actual conversion it will round trip.
It appears to be non-trivial since most languages and libraries get it wrong. :)
-- Lennart
On Tue, Feb 23, 2010 at 1:44 PM, Andy Gimblett wrote:
> Hi all,
>
> Short version: How can I pretty print and parse values
Am Dienstag 23 Februar 2010 14:44:50 schrieb Andy Gimblett:
> Hi all,
>
> Short version: How can I pretty print and parse values of type Double
> such that those operations are each other's inverse?
>
> Long version: I'm writing and QuickCheck-testing a parser using the
> approach set out here:
>
>
Hi all,
Short version: How can I pretty print and parse values of type Double
such that those operations are each other's inverse?
Long version: I'm writing and QuickCheck-testing a parser using the
approach set out here:
http://lstephen.wordpress.com/2007/07/29/parsec-parser-testing-with
