RE: GHC 6.4 release candidates available
I think this is an old bug, or at least I have seen it months back. The overlapping instances directive does not make it to the top-level. See attached sample with the offending session. Thanks for fixing. Ralf Test.hs Description: Test.hs ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: GHC 6.4 release candidates available
Ian Lynagh [EMAIL PROTECTED] writes: ghc-6.4.20050228-src.tar.bz2 I think you have unswapped the first two lines of ghc -v 21 | head -2 but not changed Reading back to Using, so old hmakes are still broken (old includes the latest release, I believe). There are a couple of other configuration changes needed in hmake to support ghc-6.4 as well, so there will be a new release shortly. Regards, Malcolm ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
seeking array advice
Hi, I'm about to rework an old program, and I am pondering what data structure to use. Basically, I want to store an index of fixed-length words (q-grams) with positions, i.e. given a word, I can quickly find its position in the data. The data set may be large (gigabytes would be nice), and I also want the option of storing a sparse set of the words in the data (i.e. every other word, every third, etc). I *think* I want to use a Map from words to positions, words packed to fit in Int(32|64|eger) (depending on word size), and positions as Int(32|64). I've used a similar approach with FiniteMaps previously, and it worked nicely, but for smaller data sets. However: Using a 'Map key [pos]' will eat a lot of space for the lists. 'Map key (UArray Int pos)' will be more efficient, but every insertion and deletion will destroy and create a new array -- and I would like the Map to live outside a monad (does there even exist an (IO|ST)Map?) I've considered lists of small(ish -- cache line compatible, probably) arrays. Another possibility is a suffix array, and a Map from words to regions in it. How will a hashtable work in this setting? Any thoughts? -kzm PS: it seems from a recent thread in comp.lang.functional (see [EMAIL PROTECTED]) that array performance has improved in GHC6.4. Impressively so. -- If I haven't seen further, it is by standing in the footprints of giants ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
RE: GHC 6.4 release candidates available
On 02 March 2005 02:10, Benjamin Franksen wrote: I haven't followed this thread too closely so please excuse me if this has already been mentioned (or even fixed). After I installed the latest binary package (20050228) the documentation was not correctly linked from the main documentation page. 'Hierarchical Libraries' on the main page points to /usr/local/share/ghc-6.4.20050228/html/libraries/index.html, but in this directory there is no index.html, only subdirectories. The link named 'Cabal' is also dead: file:/usr/local/share/ghc-6.4.20050228/html/Cabal/index.html does not exist). This is clearly non-critical, but it would be nice if it could be fixed in the final version. These should be fixed in last night's snapshot. There were some problems with building the docs, and some of the docs didn't get included in the tarball. Cheers, Simon ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: x86_64 port
Kip Macy kip.macy at gmail.com writes: I've followed the instructions to the letter. Debian has had a working amd64 package of ghc for some time now. It is built out of the standard source base for it. You can find that at: http://ftp.debian.org/debian/pool/main/g/ghc6 You'll want to grab the orig.tar.gz and the diff.gz files. If you want to grab an amd64 .deb to try, go to: http://debian-amd64.alioth.debian.org/pure64/pool/unstable/main/amd64/g/ghc6/ Even if you're not running Debian, there are tools available to convert a .deb to a RPM or tgz package. Or, you can easily unpack a deb using only ar(1) and tar(1). -- John ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
RE: GHC 6.4 release candidates available
Ralf You have a pragma -fallow-overlapping-instances in Test.hs, and indeed it is honoured when compiling Test.hs. But it's not taken into account when compiling top-level expressions, or, indeed, if you were to import Test into another module. If you say :set -falllow-overlapping-instances it'll work fine. Now, maybe you'd like the flag to attach permanently to the *instance*, so that if an instance decl is compiled with -fallow-overlapping-instances, then no complaint will ever be issued for its overlaps, even if it is imported into a module that doesn't have -fallow-overlapping-instances. That would make sense, I think, but it's not implemented and never has been. Simon | -Original Message- | From: [EMAIL PROTECTED] [mailto:glasgow-haskell-users- | [EMAIL PROTECTED] On Behalf Of Ralf Lammel | Sent: 02 March 2005 08:45 | To: glasgow-haskell-users@haskell.org | Subject: RE: GHC 6.4 release candidates available | | I think this is an old bug, | or at least I have seen it months back. | | The overlapping instances directive does not make it to the top-level. | See attached sample with the offending session. | | Thanks for fixing. | Ralf ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: GHC 6.4 release candidates available
In the past having:
{-# OPTIONS -fallow-overlapping-instances #-}
in a module was enough to get ghci to allow the overlaps.
so we do:
ghci Test.hs
now it does not work (but it did in 6.3), but:
ghci -fallow-overlapping-instances Test.hs
does... Even it Test.hs is the top level module.
Keean.
Simon Peyton-Jones wrote:
Ralf
You have a pragma -fallow-overlapping-instances in Test.hs, and indeed
it is honoured when compiling Test.hs. But it's not taken into account
when compiling top-level expressions, or, indeed, if you were to import
Test into another module.
If you say :set -falllow-overlapping-instances it'll work fine.
Now, maybe you'd like the flag to attach permanently to the *instance*,
so that if an instance decl is compiled with
-fallow-overlapping-instances, then no complaint will ever be issued for
its overlaps, even if it is imported into a module that doesn't have
-fallow-overlapping-instances. That would make sense, I think, but it's
not implemented and never has been.
Simon
| -Original Message-
| From: [EMAIL PROTECTED]
[mailto:glasgow-haskell-users-
| [EMAIL PROTECTED] On Behalf Of Ralf Lammel
| Sent: 02 March 2005 08:45
| To: glasgow-haskell-users@haskell.org
| Subject: RE: GHC 6.4 release candidates available
|
| I think this is an old bug,
| or at least I have seen it months back.
|
| The overlapping instances directive does not make it to the
top-level.
| See attached sample with the offending session.
|
| Thanks for fixing.
| Ralf
___
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RE: GHC 6.4 release candidates available
Ah, yes. In 6.2, overlap errors were checked and reported eagerly at
the instance declaration. So
instance C Int a
instance C b Bool
was rejected. Now it isn't. Instead the program is only rejected if a
constraint arises that matches two instance decls, and neither is more
specific. For example (C Int Bool)
But many constraints are fine e.g. C Int Char
However this does have the consequence that the overlapping-instance
flag must be on in the module that calls the function rather than the
one that defines the instances. It'd be better if the info travelled
with the instance decl, but it doesn't (yet). A good feature request.
Simon
| -Original Message-
| From: [EMAIL PROTECTED]
[mailto:glasgow-haskell-users-
| [EMAIL PROTECTED] On Behalf Of Keean Schupke
| Sent: 02 March 2005 17:20
| To: Simon Peyton-Jones
| Cc: glasgow-haskell-users@haskell.org
| Subject: Re: GHC 6.4 release candidates available
|
| In the past having:
|
| {-# OPTIONS -fallow-overlapping-instances #-}
|
| in a module was enough to get ghci to allow the overlaps.
|
| so we do:
|
| ghci Test.hs
|
| now it does not work (but it did in 6.3), but:
|
| ghci -fallow-overlapping-instances Test.hs
|
| does... Even it Test.hs is the top level module.
|
| Keean.
|
| Simon Peyton-Jones wrote:
|
| Ralf
|
| You have a pragma -fallow-overlapping-instances in Test.hs, and
indeed
| it is honoured when compiling Test.hs. But it's not taken into
account
| when compiling top-level expressions, or, indeed, if you were to
import
| Test into another module.
|
| If you say :set -falllow-overlapping-instances it'll work fine.
|
| Now, maybe you'd like the flag to attach permanently to the
*instance*,
| so that if an instance decl is compiled with
| -fallow-overlapping-instances, then no complaint will ever be issued
for
| its overlaps, even if it is imported into a module that doesn't have
| -fallow-overlapping-instances. That would make sense, I think, but
it's
| not implemented and never has been.
|
| Simon
|
| | -Original Message-
| | From: [EMAIL PROTECTED]
| [mailto:glasgow-haskell-users-
| | [EMAIL PROTECTED] On Behalf Of Ralf Lammel
| | Sent: 02 March 2005 08:45
| | To: glasgow-haskell-users@haskell.org
| | Subject: RE: GHC 6.4 release candidates available
| |
| | I think this is an old bug,
| | or at least I have seen it months back.
| |
| | The overlapping instances directive does not make it to the
| top-level.
| | See attached sample with the offending session.
| |
| | Thanks for fixing.
| | Ralf
|
| ___
| Glasgow-haskell-users mailing list
| Glasgow-haskell-users@haskell.org
| http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
|
|
|
| ___
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Re: GHC 6.4 release candidates available
Erm, what is the module context of GHCi? I thought ghci
used the context of the loaded module:
ghci Test.hs
*Test
I though the 'Test' in the prompt indicated you were in the context of
the Test module. In which case the pragma at the top of the test
module should be in force?
Keean.
Simon Peyton-Jones wrote:
Ah, yes. In 6.2, overlap errors were checked and reported eagerly at
the instance declaration. So
instance C Int a
instance C b Bool
was rejected. Now it isn't. Instead the program is only rejected if a
constraint arises that matches two instance decls, and neither is more
specific. For example (C Int Bool)
But many constraints are fine e.g. C Int Char
However this does have the consequence that the overlapping-instance
flag must be on in the module that calls the function rather than the
one that defines the instances. It'd be better if the info travelled
with the instance decl, but it doesn't (yet). A good feature request.
Simon
| -Original Message-
| From: [EMAIL PROTECTED]
[mailto:glasgow-haskell-users-
| [EMAIL PROTECTED] On Behalf Of Keean Schupke
| Sent: 02 March 2005 17:20
| To: Simon Peyton-Jones
| Cc: glasgow-haskell-users@haskell.org
| Subject: Re: GHC 6.4 release candidates available
|
| In the past having:
|
| {-# OPTIONS -fallow-overlapping-instances #-}
|
| in a module was enough to get ghci to allow the overlaps.
|
| so we do:
|
| ghci Test.hs
|
| now it does not work (but it did in 6.3), but:
|
| ghci -fallow-overlapping-instances Test.hs
|
| does... Even it Test.hs is the top level module.
|
| Keean.
|
| Simon Peyton-Jones wrote:
|
| Ralf
|
| You have a pragma -fallow-overlapping-instances in Test.hs, and
indeed
| it is honoured when compiling Test.hs. But it's not taken into
account
| when compiling top-level expressions, or, indeed, if you were to
import
| Test into another module.
|
| If you say :set -falllow-overlapping-instances it'll work fine.
|
| Now, maybe you'd like the flag to attach permanently to the
*instance*,
| so that if an instance decl is compiled with
| -fallow-overlapping-instances, then no complaint will ever be issued
for
| its overlaps, even if it is imported into a module that doesn't have
| -fallow-overlapping-instances. That would make sense, I think, but
it's
| not implemented and never has been.
|
| Simon
|
| | -Original Message-
| | From: [EMAIL PROTECTED]
| [mailto:glasgow-haskell-users-
| | [EMAIL PROTECTED] On Behalf Of Ralf Lammel
| | Sent: 02 March 2005 08:45
| | To: glasgow-haskell-users@haskell.org
| | Subject: RE: GHC 6.4 release candidates available
| |
| | I think this is an old bug,
| | or at least I have seen it months back.
| |
| | The overlapping instances directive does not make it to the
| top-level.
| | See attached sample with the offending session.
| |
| | Thanks for fixing.
| | Ralf
|
| ___
| Glasgow-haskell-users mailing list
| Glasgow-haskell-users@haskell.org
| http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
|
|
|
| ___
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| Glasgow-haskell-users@haskell.org
| http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
___
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RE: GHC 6.4 release candidates available
It also worked in 6.2
Before that I don't remember.
It is a very sensible thing to do
simply because the mere ghci prompt suggests that
we are in the scope of the top-level module.
So one would really expect that ghci honors the
directives of the top-level module.
Ralf
-Original Message-
From: Keean Schupke [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 02, 2005 9:20 AM
To: Simon Peyton-Jones
Cc: Ralf Lammel; glasgow-haskell-users@haskell.org
Subject: Re: GHC 6.4 release candidates available
In the past having:
{-# OPTIONS -fallow-overlapping-instances #-}
in a module was enough to get ghci to allow the overlaps.
so we do:
ghci Test.hs
now it does not work (but it did in 6.3), but:
ghci -fallow-overlapping-instances Test.hs
does... Even it Test.hs is the top level module.
Keean.
Simon Peyton-Jones wrote:
Ralf
You have a pragma -fallow-overlapping-instances in Test.hs, and
indeed
it is honoured when compiling Test.hs. But it's not taken into
account
when compiling top-level expressions, or, indeed, if you were to
import
Test into another module.
If you say :set -falllow-overlapping-instances it'll work fine.
Now, maybe you'd like the flag to attach permanently to the
*instance*,
so that if an instance decl is compiled with
-fallow-overlapping-instances, then no complaint will ever be issued
for
its overlaps, even if it is imported into a module that doesn't have
-fallow-overlapping-instances. That would make sense, I think, but
it's
not implemented and never has been.
Simon
| -Original Message-
| From: [EMAIL PROTECTED]
[mailto:glasgow-haskell-users-
| [EMAIL PROTECTED] On Behalf Of Ralf Lammel
| Sent: 02 March 2005 08:45
| To: glasgow-haskell-users@haskell.org
| Subject: RE: GHC 6.4 release candidates available
|
| I think this is an old bug,
| or at least I have seen it months back.
|
| The overlapping instances directive does not make it to the
top-level.
| See attached sample with the offending session.
|
| Thanks for fixing.
| Ralf
___
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RE: 6.4 snapshot installer available
Hi Sigbjorn. | http://www.haskell.org/ghc/dist/stable/dist/ghc-6-4-20050301.msi | (md5.sig: 0f3be1a0c211194415b2cb8ee579f6e1 ; size: 46M) Thanks as usual. I built CVS head GHC with this package and mucked around a little bit. The only problem I've come across so far is that an objectio library application I have crashes on take-off when built with this compiler (not necessarily to do with objectio of course). It does not crash with GHC 6.2.1 I'll doubt that I'll be able to break out the debugger on this one for a while so that may have to miss the 6.4 bus I'm afraid. Cheers Mike Thomas. ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
