Re: [Haskell-cafe] Haddock GSOC project progress
Is Data.Text as an extra dependency really that bad? Remember that you are parsing comments, prose, human produced text, where Data.Text is way more useful than ByteString. -- Mats Rauhala MasseR ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] ANN: Nomyx 0.1 beta, the game where you can change the rules
The user id is not necessarily the problem, but rather that you can impose as another user. For this, one solution is to keep track of a unique (changing) user token in the cookies and use that for verifying the user. -- Mats Rauhala MasseR signature.asc Description: Digital signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] New in haskell for old-timers?
I ended up discussing in university with the person next to me about Haskell. He's an old-timer who's even been to conferences, but it's a long time since he's looked at Haskell. He asked me to write what's new in Haskell, but I'm not too experienced myself. I didn't realize asking how long it's been for him, but he mentioned about new fronts in optimizing compilers and specifically mentioned a compiler that could compile to legible C. I've been following Haskell only for a couple of years, so my intuition tells me that he means `-fvia-c`, and I mentioned to him that it's about to be deprecated and replaced with the llvm back-end. I also mentioned hackage, but he hadn't heard of it. He mentioned that he'd like to use Haskell for his master's thesis, but we got a interrupted when he said what it was about. Formal something or other. I trust you fellow Haskellers have better understanding of the time frame, and can think of something interesting new features, libraries, communities etc. that's since been emerged. I ask you to give me something interesting to give him and reinstate his interest. -- Mats Rauhala MasseR pgpz7LMhpsqUI.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] New in haskell for old-timers?
On 11:57 Fri 30 Mar , Brandon Allbery wrote: The legible C thing is probably jhc ( http://repetae.net/computer/jhc/ ). It's GHC's *illegible* registerized C that is being phased out; the slightly-more-legible ANSI C mode used for porting is staying, though. Oh wow, I thought jhc was discontinued, but just checked the repositories and mailing lists and it's alive and well. No idea where I got the idea that it was discontinued. Going a little bit on tangent here, but if I understood correctly, jhc is meant to do more optimization. How does this compare to for example ghc? -- Mats Rauhala MasseR pgpcc97i4vS4a.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] ANNOUNCE: HaskellDB 2.0: Scrap your SQL strings
You mentioned that haskelldb was the first library where you weren't forced to break the abstraction. Do you have a solution to a situation where you might want to retreive the last inserted id after an insert? -- Mats Rauhala MasseR pgp8ofM61Yw5k.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] podcast?
On 09:05 Wed 15 Feb , serialhex wrote: Does anybody know of any good haskell/fp podcasts out there? i dont know if my googling skillz are just failing me, but i can't seem to find anything. thanks all! hex Out of my head I can think of ThinkRelevance podcast at http://thinkrelevance.com/blog/tags/podcast pgpSaQMQOTtoX.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] podcast?
On 15:15 Tue 21 Feb , Christopher Done wrote: I recently thought it would be Pretty Cool to make an FP podcast, sort of a spoken Haskell Weekly News but covering all FP, blogs, packages, conferences, papers, standards, mailing lists, even stackoverflow, whatever's interesting in FP. We could use Gtalk or Mumble (both quite high quality audio) to conduct it and cut it up in audacity. I for one would be an interested listener -- Mats Rauhala MasseR pgpmnNX9qw0my.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] HaskellDB DB Layout Description
On 18:12 Sat 09 Jul , Tom Murphy wrote: Hi, I've found good explanations of the HaskellDB combinators, but I can't find good information about how to correctly define the database layout. Can anyone point me to a resource, or give a quick example? Thanks! Tom Hello, I wrote a bit lengthy introduction to haskelldb at http://users.utu.fi/machra/posts/2011-07-15-haskelldb.html. Could you check it out, and maybe comment whether it was helpful, or if something is falsy/doesn't work for you? -- Mats Rauhala MasseR pgpIJJ6WlM8Nn.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] HaskellDB DB Layout Description
On 18:12 Sat 09 Jul , Tom Murphy wrote:
Hi,
I've found good explanations of the HaskellDB combinators, but I
can't find good information about how to correctly define the database
layout. Can anyone point me to a resource, or give a quick example?
Thanks!
Tom
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I don't have any examples at hand, but I'll look through the api with
you.
There are three ways to create the dblayout interface, manually, through
dbinfo or through template haskell.
The vanilla way is to use the DBInfo(3) module to describe your database
layout. It can also be used to create the database schema, but as the
dbinfo language is very restricted, I don't recommend it.
DBInfo {
dbName DatabaseName
opts = DBOptions {
useBString = False
, makeIdent = mkIdentPreserving }
tbls = [TInfo {tname = tablename
cols = [CInfo {cname = columnname,
descr = (IntT, False)}]
}
]
}
This would create a layout describing a database called DatabaseName
with one table tablename with one column columnname which is of type
int and can't be null. The mkIdentPreserving is an undocumented function
in (5)
The description then needs to be created into module files with
dbInfoToModuleFiles(4). This creates a root DatabaseName.hs file and
DatabaseName directory. The root file is uncompilable and can be safely
removed.
The fact that there is two stages for the compilation, makes it
difficult to compile. I believe this restriction is because haskelldb
was created when there was no template haskell. With template haskell
(2) you could do the following:
$(mkDbDirectTable tablename [(columnname, [t|Int|])]
I don't know how to specify whether the field can be null or not, but at
least this way you get your dblayout descriptions at compile time.
[1] http://hackage.haskell.org/package/haskelldb
[2] http://hackage.haskell.org/package/haskelldb-th
[3]
http://hackage.haskell.org/packages/archive/haskelldb/2.1.1/doc/html/Database-HaskellDB-DBSpec-DBInfo.html
[4]
http://hackage.haskell.org/packages/archive/haskelldb/2.1.1/doc/html/Database-HaskellDB-DBSpec-DBSpecToDBDirect.html
[5]
http://hackage.haskell.org/packages/archive/haskelldb/2.1.1/doc/html/src/Database-HaskellDB-DBSpec-PPHelpers.html
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Re: [Haskell-cafe] Call for GUI examples - Functional Reactive Programming
Before asking the stackoverflow question, I tried to create a gui with
three text fields, which would be reflected on the other side as labels.
The data the fields would represent was:
data Person = Person {
name :: String
, age :: Int
, location :: Maybe String
}
I believe this is a good example as this shows converting String - Int,
and handling values that might or might not exist.
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Re: [Haskell-cafe] Call for GUI examples - Functional Reactive Programming
On 11:09 Fri 08 Jul , David Virebayre wrote: 2011/7/8 Heinrich Apfelmus apfel...@quantentunnel.de: I want to hear! Just a description. :) You can also mention why you find it interesting etc. Well I have an old program sitting around. Anyway, it's very simple : The GUI has - a window with a menu bar, 2 directory selects (source and dest directories), 1 file select ( the 'patch file'), 1 textview to write logging information, and a 'Convert' button to start. - an about window that opens from a 'About...' menuitem - A status bar. The convert button stats an action that scans all applicable files in a source directory, converts them and writes them in a destination directory. The conversion itself is irrelevant to the topic, in my case it consists in searching for patterns in the file and replacing them, according to a list of changes read from a file, the 'patch file'. The progression is logged in the textview: file processed, strings replaced. In the status bar, a percentage bar grows. This provides another interest. wxHaskell has file dialogs, which are not events, but instead raw IO actions. -- Mats Rauhala MasseR pgpuaYFsyvY39.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Twidge and identi.ca
Does twidge still support identi.ca? I was able to auth, but after that every single command returns 'twidge: user error (Bad response: 404)'. The commands work for twitter. -- Mats Rauhala MasseR pgpU14ltgvUZK.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Distributing Haskell GUI apps for Windows/MacOS?
There is bamse [1], but it's last been updated in 2009, and has build-failures for 6.10, 6.12 and 7.0. It has some dependency weirdness, like wanting both base = 4 and 4. I don't know how difficult it would be to upgrade it to modern haskell, but I'm sure the changes would be appreciated. [1] http://hackage.haskell.org/package/bamse -- Mats Rauhala MasseR pgpbVRfuirO3s.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Using cmake with haskell
A little self-promotion, but I wrote this today: http://users.utu.fi/machra//posts/2011-05-13-environment.html A post about interfacing vim and cabal-dev. pgpE2vFrpuUPH.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Painless parallelization.
You could look into par and pseq combinators and parallel strategies[1]. Real world haskell[2] has some examples on the usage. 1. http://hackage.haskell.org/package/parallel 2. http://book.realworldhaskell.org/read/concurrent-and-multicore-programming.html -- Mats Rauhala pgpeZ4z9l0SI6.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Haskell on-line judge for Programming Challenges / Contests ?
http://codechef.com accepts Haskell entries. pgpa3li6zz0gF.pgp Description: PGP signature ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
