Send Beginners mailing list submissions to
beginners@haskell.org
To subscribe or unsubscribe via the World Wide Web, visit
http://www.haskell.org/mailman/listinfo/beginners
or, via email, send a message with subject or body 'help' to
beginners-requ...@haskell.org
You can reach the person managing the list at
beginners-ow...@haskell.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Beginners digest..."
Today's Topics:
1. Re: Laziness and XML parsing (Sean Hess)
2. Noisy Linking (Zhi-Qiang Lei)
3. Re: Laziness and XML parsing (Michael Snoyman)
4. Re: Laziness and XML parsing (David McBride)
5. Re: Laziness and XML parsing (Sean Hess)
6. Re: Issue with lazy eval + trace (Hugo Ferreira)
7. Re: Laziness and XML parsing (Michael Snoyman)
----------------------------------------------------------------------
Message: 1
Date: Tue, 8 Nov 2011 06:38:58 -0700
From: Sean Hess <seanh...@gmail.com>
Subject: Re: [Haskell-beginners] Laziness and XML parsing
To: Felipe Almeida Lessa <felipe.le...@gmail.com>
Cc: beginners@haskell.org
Message-ID: <beccc932-e32f-450a-b7c4-2d401ca4f...@gmail.com>
Content-Type: text/plain; charset="us-ascii"
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 <seanh...@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.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://www.haskell.org/pipermail/beginners/attachments/20111108/2339ad75/attachment-0001.htm>
------------------------------
Message: 2
Date: Tue, 8 Nov 2011 21:53:38 +0800
From: Zhi-Qiang Lei <zhiqiang....@gmail.com>
Subject: [Haskell-beginners] Noisy Linking
To: Haskell Beginer <beginners@haskell.org>
Message-ID: <9115d5c9-c746-4ba9-a845-2fb74cdf5...@gmail.com>
Content-Type: text/plain; charset=windows-1252
Hi,
The console comes out lots of warning message and performs slowly when I
compile my code. Google does not help. Does anybody know what it refers to? I'm
using Mac OS X 10.7.2.
bogon% make test
ghc --make -isrc -fhpc Test.hs
[1 of 2] Compiling Miner ( src/Miner.hs, src/Miner.o )
[2 of 2] Compiling Main ( Test.hs, Test.o )
Linking Test ...
ld: warning: could not create compact unwind for .LFB3: non-standard register 5
being saved in prolog
ld: warning: text reloc in _r15W_info to
_base_GHCziWord_zdfIntegralWord32_closure
ld: warning: text reloc in _r15W_info to
_Cryptozm4zi2zi4_DataziDigestziSHA2_zdfShowHash8_closure
ld: warning: text reloc in _r15W_info to non_lazy_ptr
ld: warning: text reloc in _r15W_info to non_lazy_ptr
ld: warning: text reloc in _r15W_info to non_lazy_ptr
ld: warning: text reloc in _r15Y_info to _base_GHCziWord_zdfEqWord32_closure
ld: warning: text reloc in _r15Y_info to
_Cryptozm4zi2zi4_DataziDigestziSHA2_zdfEqHash8_closure
ld: warning: text reloc in _r15Y_info to non_lazy_ptr
ld: warning: text reloc in _r15Y_info to non_lazy_ptr
ld: warning: text reloc in _r15Y_info to non_lazy_ptr
ld: warning: text reloc in _r160_info to _r15Y_closure
ld: warning: text reloc in _r160_info to _base_GHCziWord_zdfOrdWord32_closure
ld: warning: text reloc in _r160_info to
_Cryptozm4zi2zi4_DataziDigestziSHA2_zdfOrdHash8_closure
ld: warning: text reloc in _r160_info to non_lazy_ptr
ld: warning: text reloc in _r160_info to non_lazy_ptr
ld: warning: text reloc in _r160_info to non_lazy_ptr
ld: warning: text reloc in _r162_info to _base_GHCziWord_zdfEqWord8_closure
ld: warning: text reloc in _r162_info to _base_GHCziClasses_zdfEqZMZN_closure
ld: warning: text reloc in _r162_info to non_lazy_ptr
ld: warning: text reloc in _r162_info to non_lazy_ptr
ld: warning: text reloc in _r162_info to non_lazy_ptr
ld: warning: text reloc in _r164_info to _r162_closure
ld: warning: text reloc in _r164_info to _base_GHCziWord_zdfOrdWord8_closure
ld: warning: text reloc in _r164_info to _base_GHCziClasses_zdfOrdZMZN_closure
ld: warning: text reloc in _r164_info to non_lazy_ptr
ld: warning: text reloc in _r164_info to non_lazy_ptr
ld: warning: text reloc in _r164_info to non_lazy_ptr
?...
Best regards,
Zhi-Qiang Lei
zhiqiang....@gmail.com
------------------------------
Message: 3
Date: Tue, 8 Nov 2011 06:01:07 -0800
From: Michael Snoyman <mich...@snoyman.com>
Subject: Re: [Haskell-beginners] Laziness and XML parsing
To: Sean Hess <seanh...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<CAKA2JgJd2owg+o=wzF1HM--e7WeSjEURnu=nYgp4ECrR7=q...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
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 <seanh...@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 <seanh...@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.
>
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
>
------------------------------
Message: 4
Date: Tue, 8 Nov 2011 09:01:44 -0500
From: David McBride <toa...@gmail.com>
Subject: Re: [Haskell-beginners] Laziness and XML parsing
To: Sean Hess <seanh...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<can+tr409rarhyqvsx05nhfjr3_eyknkhxj40wlng7nk3jxu...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Check out this chapter of the yesod book for good examples:
http://www.yesodweb.com/blog/2011/10/xml-enumerator
On Tue, Nov 8, 2011 at 8:38 AM, Sean Hess <seanh...@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 <seanh...@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.
>
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://www.haskell.org/mailman/listinfo/beginners
>
>
------------------------------
Message: 5
Date: Tue, 8 Nov 2011 07:03:57 -0700
From: Sean Hess <seanh...@gmail.com>
Subject: Re: [Haskell-beginners] Laziness and XML parsing
To: Michael Snoyman <mich...@snoyman.com>
Cc: beginners@haskell.org
Message-ID: <1fadd938-0c83-4c20-abd2-9d2b50d10...@gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
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 <seanh...@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 <seanh...@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.
>>
>>
>> _______________________________________________
>> Beginners mailing list
>> Beginners@haskell.org
>> http://www.haskell.org/mailman/listinfo/beginners
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://www.haskell.org/pipermail/beginners/attachments/20111108/ea186531/attachment-0001.htm>
------------------------------
Message: 6
Date: Tue, 08 Nov 2011 14:11:02 +0000
From: Hugo Ferreira <h...@inescporto.pt>
Subject: Re: [Haskell-beginners] Issue with lazy eval + trace
To: Daniel Fischer <daniel.is.fisc...@googlemail.com>
Cc: beginners@haskell.org
Message-ID: <4eb93876.6040...@inescporto.pt>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 11/07/2011 04:56 PM, Daniel Fischer wrote:
> On Monday 07 November 2011, 17:11:10, Hugo Ferreira wrote:
>>> You're compiling with optimisations, aren't you?
>>
>> Not that I am aware of. I did not set up any compilation flags in the
>> cabal file.
>
> cabal defaults to compiling with -O unless otherwise specified
> ($ cabal build -v2 emits the command lines used to build, if you want to
> check), so you most likely do.
>
Correct. I confirmed this.
Thanks,
Hugo F.
------------------------------
Message: 7
Date: Tue, 8 Nov 2011 06:33:42 -0800
From: Michael Snoyman <mich...@snoyman.com>
Subject: Re: [Haskell-beginners] Laziness and XML parsing
To: Sean Hess <seanh...@gmail.com>
Cc: beginners@haskell.org
Message-ID:
<caka2jg+duou9bkcvfzjvv6_knmt1if10jqyp_tzn-yel6nf...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
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 <seanh...@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 <seanh...@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 <seanh...@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.
>
>
> _______________________________________________
>
> Beginners mailing list
>
> Beginners@haskell.org
>
> http://www.haskell.org/mailman/listinfo/beginners
>
>
>
>
------------------------------
_______________________________________________
Beginners mailing list
Beginners@haskell.org
http://www.haskell.org/mailman/listinfo/beginners
End of Beginners Digest, Vol 41, Issue 11
*****************************************
