David> I'm still trying to figure out what the point of the shootout
David> really is.
It is a fun and largely flawed competition between languages and their
users :) Fun, on its own, is enough to motivate this project I guess.
--
Paul
___
Haskell-C
>>> What's an elegant definition of a Haskell function that takes two strings
>>> and returns "Nothing" in case the first string isn't a substring of the
>>> first, or "Just i", where i is the index number of the position within the
>>> first string where the second string begins?
my quick take, w
wren> I wish Haskell allowed ! to occur (non-initially) in alphanum_'
wren> identifiers as well as in symbolic ones. Then we could be more
wren> consistent about having ! mean strictness
BTW, does something in haskell syntax prevent '?' from appearing at the
end of identifiers ? It is a nice way
PEM> In fact, the time you'd spend writing read instances would not
PEM> compare to the half hour required to learn parsec.
maybe the wiki could be updated to give more clues for a newcomer.
http://www.haskell.org/haskellwiki/Parsec
in particular :
- link 1 points to the parsec site, with
Hello Stephen,
Stephen> The 10 year old documentation is very good though - for my
Stephen> taste, Parsec 2.0 is the best documented Haskell lib I've seen.
Indeed the doc for 2.0 is really comprehensive, but didn't the library
evolve a lot between release 2.0 and 3.1 ?
Stephen> If you want to pa
For one, I am adverse to DSL based on quasi-quotation. Not because
I find the syntax hard - to be honnest it is often the opposite, with
DSL designed with ease of use in mind - but because of the volatile
nature of languages without specification, be them basic DSL. It is
quiet hard to settle on a
> The most proeminent example is probably PostgreSQL, which is an
> incredibly strong product with high SQL power. But as soon as you access
> it through the ActiveRecord or Persistent API, it gets turned into
> a very limited store, with the SQL power of SQLITE or MongoDB.
Tom> "Limited" /= "Wors
el> did, I would use raw SQL for that too.
Michael> Persistent's advantage over going directly to the database is concise,
Michael> type-safe code. Are you really telling me that `runSql "SELECT * FROM
Michael> foo where id=?" [someId]` plus a bunch of marshal code is
Nice, thank you. I was wondering recently what was the current state of
Gabriel's pipes and Paolo's guarded variant. IIRC, they were working on
a converging branch with good support at resources early termination.
On Sun, 26 Feb 2012 10:50:22 +, Daniel Waterworth
said:
Daniel> Hi all,
Danie
Chris> * https://github.com/chrisdone/pgsql-simple The PostgreSQL library
Chris> that amelie uses, it's a raw tcp/ip socket interface to the server,
Chris> fairly trivial and yet interesting (to me) and useful. Needs more
Chris> authentication methods, and I have some opportunities for optimizing
C
John> 0.8.1 is almost due to be put out, it will be the first to be 100%
John> haskell 2010 (and haskell 98) compliant and has a lot of other neat
John> features over 0.8.0.
That's great ! I can't wait to put it into my toolbox. Haskell compilers
are all pieces of art, bringing beauty to our daily
Grigory> So now I wonder, what are the languages that are functional in
Grigory> the sense above? With a reasonable syntax and semantics, thus
Grigory> no assembler. I guess Lisp might be of this kind, but I'm not
Grigory> sure. In addition, I'm not a fan of parentheses. What else?
Grigory> Pure?
On Mon, 30 Apr 2012 12:27:57 -0700, Simon Michael said:
Simon> With 2.8 released, I felt Darcs deserves better presentation. After
Simon> surveying other VCS sites I worked on an update to our home page
Simon> layout and content over the last few days, with review and input from
Simon> #darcs, an
Simon> It does discuss both camp and darcs. I meant to say the following:
Simon> I was happy to be able to use Ian Lynagh's video, which I have always
Simon> felt strikes a very good tone - technical, concise, grounded and
Simon> energising. I like listening to it. Thanks Ian!
Indeed, the form, d
Maciej> I believe the biggest problem was (i.e. when migration started)
Maciej> that there is no big-name-hosting supporting darcs. When
Maciej> code.haskell.org went down people were cut off from code.
Please forgive me if the answer is obvious : is Darcs storage "backend
agnostic", or must it r
Hi Café,
Thomas> I think (<>) is fairly uncontroversial because:
Thomas> (...)
Thomas> 2. It's abstract. i.e., no intended pronunciation
How can that be an advantage ? A text flow with unnamed (or
unpronounceable) symbols makes reading, understanding and remembering
harder, don't you think ? I re
>>> This should be mapM_ and 'ghc -Wall' spots this problem since 6.12.
>> The compiler (7.04) doesn't tell me anything about it.
Henning> It seems that it is no longer part of -Wall.
Indeed, that's not part of -Wall.
http://www.haskell.org/ghc/docs/7.0.4/html/users_guide/options-sanity.html
Hem hem ... I should never try to write anything sensible before putting
my thick glasses. -w does not turn ON all warnings, but turns them OFF,
so my previous comment regarding swapping its definition with -Wall is
just nonsense. Sorry for the noise.
Still, do you think there could be room for a
KC> Are there plans a foot (or under fingers) to make a version of
KC> Haskell that runs on the JVM?
This is probably a fun - or even useful - project, and a lot of people
have had this wish of a general convergence of language runtimes toward
a single VM such as the java one or the .net one.
B
Joachim> point taken, if you are already building on a transformer
Joachim> stack, adding yet another layer is not a problem. I’m having
Joachim> mainly pure code in mind.
I think we need an other word than "pure" here. Usually, we understand
"pure" as "always producing the same result when given
> On 1 November 2011 21:35, Ketil Malde wrote:
>> or even
>>
>> Maintainer: Ketil Malde -- email me if you
>> are human
> Though unless the hackage email bot is smart enough, this will result
> in a lot of unsendable emails...
But the bot is not a human, so that's what ketil wanted after all
Ross> A field in the .cabal file is just as available to bots as
Ross> a field on the package page.
Yes, absolutly. There are at least one easy solution for this problem :
having a server-side user model that is related to packages, or to
packages versions, indicating wich user is the maintainer
Hey,
Rustom> Does anyone give me a little comparison of these? What would all
Rustom> my requirements be? Not sure... these seem important for me
Rustom> 1. Need to sandbox not just haskell-projects but ghc (different
Rustom> compilations/versions) itself 2. Stability of the (sandboxing)
Rustom>
Yes
If some people don't like it, they won't use it.
I doubt it will find its way in highly technical haskell core team, but
it could appear for fun here and there in web material. For example,
I think we could have 3 variants of it, reflecting the haskell level
(beginner, confirmed, guru). Whene
dokondr> On the contrary, standard shell variable $0 - contains a full
dokondr> path to the program location in the directory structure, no
dokondr> matter from what directory the program was called.
I don't think the comparison makes sense, as shell script invocation and
executable run are very d
dokondr> Hi, I need to make the current process (executing thread) go to
dokondr> sleep for a given amount of time. Can't find where threadSleep
dokondr> is defined.
Maybe because there is no such threadSleep function in base packages,
what do you think ?
Ok, let's see if we can find what you ar
Alexej> The interesting thing is, that if I change the "case ... of"
Alexej> statement to an "if ... then ... else" statement, this magically
Alexej> starts to work. Since I no longer am enrolled (I have to take
Alexej> the course next year), I can't ask a teacher, but my curiosity
Alexej> still bu
Hi,
> x :: Integer <- instruction1 -- Require ScopedTypeVariables
Indeed, that does require ScopedTypeVariables to be enabled, but this
basic use case is not clearly covered in the ScopedTypeVariables
documentation.
Also, it is not clear to me why ScopedTypeVariables is required at all
here, as
AntC> Steve, I think that proposal has been rather superseeded by
AntC> http://hackage.haskell.org/trac/ghc/wiki/Records/OverloadedRecordFields,
which
AntC> draws on TDNR. But SORF is best seen as an evolving design space, with
precise
AntC> details yet to be clarified/agreed. I've put my own
Steve> Every programmer has their own favorite editor, usually using the same
Steve> one to work in many different languages. For the moment, you'd have
Steve> a hard job separating me from Notepad++.
Main editors have very advanced customization features (though
incredibly hacky most of the time)
Although it's a bit off topic, I must say I agree with Malcolm on that.
Record-fields-selection-as-functions might be sometime unconvenient, but
it is simple and easy to reason about and deal with, with usual Haskell
strategies (prefixed names, modules, qualified imports ... business as
usual).
Ho
I have quiet a lot of experience in the business of web services
strongly backed by data stores, in a company that allowed me to apply
a technologies such as RubyOnRails, DataMapper, PostgreSQL, Redis, Riak,
HappStack and Snap. Greg, with no offense intended, I will share with
the café a conclusion
iles; while the solution is
pretty trivial, it is a wart."
I would not go so far as to say that binary should be the default mode for
opening and reading a file, but I would say that the two should be made
equally simple and clear options in the st
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