[Haskell-cafe] String to Double conversion in Haskell

[Daryoush Mehrtash]

I am curious to understand the logic, the "Haskell Think", here.  Why is it
that the byteString only supports conversion to int.

daryoush
On Sun, Aug 24, 2008 at 2:23 PM, Don Stewart <dons at galois.com> wrote:

> dmehrtash:
> >    I am trying to convert a string to a float.  It seems that
> Data.ByteString
> >    library only supports readInt.    After some googling I came accross a
> >    possibloe implementation: [1]http://sequence.svcs.cs.pdx.edu/node/373
> >
>
> Use the bytstring-lexing library,
>
>
> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bytestring-lexing
>
> Which provides a copying and non-copying lexer for doubles,
>
>    readDouble       :: ByteString -> Maybe (Double, ByteString)
>    unsafeReadDouble :: ByteString -> Maybe (Double, ByteString)
>
> -- Don
>
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