[Haskell-beginners] Help with enumerator pipeline

[Michael Xavier]

I've been meaning to take a look at blaze-builder anyways, but there is a
specific reason to use lazy ByteStrings. I'm using the Aeson library for
parsing/encoding JSON data. The encode function in that library chose lazy
ByteStrings as the output format. While performance on this project is a
factor, I'm reimplementing a project done in Ruby, so it won't be too hard
to best it in that dimension in Haskell, regardless of the output format ;)


On Thu, Sep 1, 2011 at 7:27 AM, Ertugrul Soeylemez <es at ertes.de> wrote:

> Michael Xavier <nemesisdesign at gmail.com> wrote:
>
> > I've just recently started learning how to use the enumerator
> > library. I'm designing a utility that parses a file where each line is
> > a JSON object.  I've designed it to look like:
> >
> > source enumerator (enumHandle pretty much) ->
> > chunk by lines (enumeratee) ->
> > parse a line into an Object (enumeratee) ->
> > filter objects based on a criteria (enumeratee) ->
> > limit some keys from each object (enumeratee) ->
> > encode the object into a lazy bytestring (enumeratee) ->
> > output the file to stdout (iteratee)
>
> If there is no specific reason to use lazy ByteStrings, I would suggest
> that you use a concept complementary to iteratees, the blaze-builder
> library for efficient stream output.
>
>
> Greets,
> Ertugrul
>
>
> --
> nightmare = unsafePerformIO (getWrongWife >>= sex)
> http://ertes.de/
>
>
>
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-- 
Michael Xavier
http://www.michaelxavier.net
LinkedIn <http://www.linkedin.com/pub/michael-xavier/13/b02/a26>
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