[Haskell-cafe] Climbing up the shootout...

Bulat Ziganshin bulat.ziganshin at gmail.com
Mon Sep 22 20:47:26 EDT 2008

Hello Don,

Tuesday, September 23, 2008, 4:36:55 AM, you wrote:

>> it isn't the same as readInt which was added specifically for this
>> test. it doesn't support arbitrary-size streams and doesn't return
>> rest of stream

> Hmm? That is wrong. These functions explicitly work on arbitrarily long
> lazy bytestrings, and return the rest of the stream in a pair:

lazy bytestring which is read from file on demand is the same as
arbitrary-sized stream. equivalent C code would be much faster (and
probably limited by memory speed)

>     readInt :: ByteString -> Maybe (Int, ByteString)
>     readInteger :: ByteString -> Maybe (Integer, ByteString)

> These are the initial parts of a bytestring lexing library, more of
> which is appareing in the bytestring-lex package on Hackage.

readInt was added to FPS library by you and immediately used to
improve speed of this benchmark two years ago. there was no
readInteger since shootout doesn't contain such benchmarks :)

Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com

More information about the Haskell-Cafe mailing list