[Haskell-beginners] Laziness and XML parsing

[Michael Snoyman]

Thanks for the heads-up, it's just a few minor tweaks in the 0.3->0.4
transition. I'll update later, and add a link to the blog post, and
release a new version to Hackage.

On Tue, Nov 8, 2011 at 6:03 AM, Sean Hess <seanhess at gmail.com> wrote:
> Thanks so much to both of you that sent that link.
> Sorry, my email totally wasn't clear. I meant that the example in the
> package description doesn't
> run: http://hackage.haskell.org/packages/archive/xml-enumerator/0.4.3.1/doc/html/Text-XML-Stream-Parse.html#t:ParseSettings
> I'll read through that article.
>
> On Nov 8, 2011, at 7:01 AM, Michael Snoyman wrote:
>
> Here's a blog post on the package:
> http://www.yesodweb.com/blog/2011/10/xml-enumerator . It doesn't cover
> the streaming interface, but it might give you a good overview of the
> package in general. I'm not sure what you mean by "it doesn't run,"
> but you'll need at least a basic understanding of enumerators to get
> off the ground.
>
> On Tue, Nov 8, 2011 at 5:38 AM, Sean Hess <seanhess at gmail.com> wrote:
>
> I cannot seem to find a working example of xml-enumerator. It doesn't run:
>
> the names seem to have changed for some things, and I'm too much of a
>
> beginner to figure it out easily.
>
> http://hackage.haskell.org/packages/archive/xml-enumerator/0.4.3.1/doc/html/Text-XML-Stream-Parse.html#t:ParseSettings
>
> On Nov 7, 2011, at 7:59 PM, Felipe Almeida Lessa wrote:
>
> On Tue, Nov 8, 2011 at 12:45 AM, Sean Hess <seanhess at gmail.com> wrote:
>
> I want to parse a large xml file (2GB), without putting the whole thing into
>
> memory. It's pretty simple with a sax parser in most languages, you just
>
> stream bytes to the sax parser, and wait for sax events.
>
> I recommend you taking a look at xml-enumerator [1] and
>
> libxml-enumerator [2].  They are the SAX parsers you know from the
>
> imperative world but much easier to write =).  In particular, you
>
> don't need to rely on lazyness.
>
> Cheers,
>
> [1] http://hackage.haskell.org/package/xml-enumerator
>
> [2] http://hackage.haskell.org/package/libxml-enumerator
>
> --
>
> Felipe.
>
>
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