[Haskell-cafe] ANN: HPath-0.0.0

HPath in conjunction with LaTeX macros to allow easy inclusion of Haskell in elaborate documents. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] An old package and the new Cabal.

Thanks; this should be enough for me to get it working again. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

[Haskell-cafe] Dead links for Web frameworks.

to these two projects and if any docs remain for them. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

[Haskell-cafe] Instances of `IsString`.

A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: [Haskell-cafe] Instances of `IsString`.

2009/12/20 Brandon S. Allbery KF8NH allb...@ece.cmu.edu: On Dec 20, 2009, at 17:09 , Jason Dusek wrote:  A quick check on Hayoo! and in my interpreter shows that  there are basically no instances of `IsString`. Is it  really so little used? The only 2 instances I'm aware of are String

[Haskell-cafe] An old package and the new Cabal.

-include-dirs= and --extra-lib-dirs= to specify where it is. It takes like a minute to err out, too. This isn't urgent or anything but it would be nice to know how to get this build process -- C generation followed by compilation -- to work again. -- Jason Dusek

Re: [Haskell-cafe] Re: Allowing hyphens in identifiers

: http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms Cheers, Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Double free-ing (was: Reading from a process)

(for Haskell) approach. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Double free-ing (was: Reading from a process)

Concatenating two `ByteString`s is O(n)? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Re: Optimizing Parsec 3 -- was: Wiki software?

2009/12/16 Stephen Tetley stephen.tet...@gmail.com: 2009/12/16 Jason Dusek jason.du...@gmail.com: What is the relationship between the Parsec API, Applicative and Alternative? Is the only point of overlap `|`? Lots of functions in Text.ParserCombinators.Parsec.Combinator can be defined

Re: [Haskell-cafe] Reading from a process

with a Haskell comment, like `-- EOT`. Since your message always comes wrapped in a list, you could just use the square brackets to tell you when you're done. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman

Re: [Haskell-cafe] Reading from a process

2009/12/16 Mitar mmi...@gmail.com: On Wed, Dec 16, 2009 at 11:25 PM, Jason Dusek jason.du...@gmail.com wrote: Criterion for garbage is that it is not readable with read and that not because there would be not enough data available. It seems that I will need to do buffer filling and reading

Re: [Haskell-cafe] consulting and contracting

. I've done one Haskell contract this year, for legal document processing. This was a case where the client was definitely more focused on the solution than the language used and really cared a lot more about a good CLI and clearly defined output for each processing step. -- Jason Dusek

Re: [Haskell-cafe] Re: Optimizing Parsec 3 -- was: Wiki software?

What is the relationship between the Parsec API, Applicative and Alternative? Is the only point of overlap `|`? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Why?

2009/12/14 Edward Kmett ekm...@gmail.com: [...] That doesn't mean that I want to subject myself to working in such a sufficient computing environment :) Sufficient? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http

[Haskell-cafe] Re: Pure extremism (was: Re: Why?)

2009/12/12 Luke Palmer lrpal...@gmail.com: On Fri, Dec 11, 2009 at 7:07 PM, Jason Dusek jason.du...@gmail.com wrote:  Where do we draw the line between machinery and packages?  The types don't tell us what libraries we need. ...you might mean what *haskell* libraries does a piece of code

Re: [Haskell-cafe] Re: [darcs-users] Iteratees, streams, and mmap

functions like bracketSmall are necessary if we want to hide the stream itself from being exposed outside of the traversal function. For example, your foldlSmall doesn't leak, but something at the same level of scope as it could leak the list. Jason

[Haskell-cafe] Re: [darcs-users] Iteratees, streams, and mmap

Hi Heinrich, On Sat, Dec 12, 2009 at 2:42 AM, Heinrich Apfelmus apfel...@quantentunnel.de wrote: Jason Dagit wrote: My next experiment will be to find ways to express take this operation and apply it to a stream without letting the stream leak. One implication is that gzReadFilePS

Re: [Haskell-cafe] Re: [darcs-users] Iteratees, streams, and mmap

On Sat, Dec 12, 2009 at 1:37 PM, Johann Höchtl johann.hoec...@gmail.comwrote: On Dec 12, 7:13 pm, Jason Dagit da...@codersbase.com wrote: Hi Heinrich, On Sat, Dec 12, 2009 at 2:42 AM, Heinrich Apfelmus apfel...@quantentunnel.de wrote: Jason Dagit wrote: My next experiment

Re: [Haskell-cafe] Why?

to native code in a way that trusts it to be pure, I don't see how having a way to bind to nominally side-effecting Haskell code in a way that trusts it to be pure adds anything to our troubles. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe

Re: [Haskell-cafe] Why?

? The types don't tell us what libraries we need. They don't tell us how much RAM/CPU we need, either. Pure functional code as the minimal essence of pure computation -- everything else an EDSL. Partial or total code? -- Jason Dusek ___ Haskell-Cafe

Re: [Haskell-cafe] Type system speculation

is that it would allow for kind polymorphism in a useful way. Or at least, in a way that I tend to yearn for it. Do you have anyway to get kind polymorphism? Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: [Haskell-cafe] Re: Handles with their IOMode in their type

-DxJ5S0sgPSl82kBQsa=Xoi=book_resultct=resultresnum=3ved=0CA8Q6AEwAjgK#v=onepageq=f=false Looks like you're telling the truth. Learn something new every time I read Haskell-Cafe :) Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org

Re: [Haskell-cafe] Re: [Haskell] ANNOUNCE: control-monad-exception 0.5 with monadic call traces

. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Optimization with Strings ?

understand the holes in Haskell's type system. Have you published some research on the flaws of Haskell's design? If Haskell is unsound I'd certainly like to know where and why so that I can improve my programs. Please help. Thanks, Jason ___ Haskell-Cafe

Re: [Haskell-cafe] Are there standard idioms for lazy, pure error handling?

wren ng thornton wrote: concat1 :: T a b - (b - T a b) - T a b This could just as easily be concat :: T a b - (b - T a c) - T a c right? It's a little weird to call this concatenation, but I bet it could come in handy. -- Jason McCarty jmcca...@sent.com

Re: [Haskell-cafe] Is Haskell a Fanatic?

to be unjust, and it encourages more of the same.  It's like littering your own house. +1 -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Great Programs to Read?

I'd suggest the Prelude and Data.List The code is very clear and thoroughly documented. Knowing what is there will pay off again and again. - Jason On Nov 30, 2009, at 5:22 AM, Michael Lesniak wrote: Hello, In terms of to become a great programmer, you need to read great programs[1

[Haskell-cafe] Multi-versioning and compatibility classes.

Then the maintainer of Parsec specifies that 2.1.0.1 is compatible with 2.1.0.0 and we can compile the second package, the one that require 2.1.0.0, with 2.1.0.1 since they are compatible and that is all it is asking for. Then we try to use these two packages together and everything works. -- Jason

Re: [Haskell-cafe] some help on do and preservingMatrix

) As for `preserveMatrix`, it is some OpenGL thing; probably what it does is ensure that any changes you make to one of the matrices that make up the rendering state are undone once you exit the enclosed computation. -- Jason Dusek ___ Haskell-Cafe mailing list

Re: [Haskell-cafe] I miss OO

; but this doesn't capture the notion that all these records conform to a certain type equation. In this way, Haskell is more demanding of you; but it also offers you a way to make the semantics of your data explicit. -- Jason Dusek ___ Haskell-Cafe

[Haskell-cafe] ANN: wcwidth-0.0.1

column wide. In addition, a little utility is provided that constructs a table of widths by character and a listing of character ranges with the same width. On different systems, `wcwidth` may assign different widths to the same character for some obscure characters. -- Jason Dusek

Re: [Haskell-cafe] attoparsec and parsec

. However, I was quite keen on releasing my JSON parser in a timely manner; the maintainer was (very reasonably) not on my schedule and I'm not sure my patch was ever applied. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http

Re: [Haskell-cafe] attoparsec and parsec

). -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

[Haskell-cafe] FFI binding -- different behaviour under compilation and interpretation.

) Linking demo ... 0x5cff -1 峿 :; chmod ug+x DemoFailure.hs DemoFailure.hs 0x5cff 2 峿 Switching between safe/unsafe does not make any difference. This was run on a Macintosh. -- Jason Dusek #!/usr/bin/env runhaskell {- DemoFailure.hs -} {-# LANGUAGE

Re: [Haskell-cafe] FFI binding -- different behaviour under compilation and interpretation.

Thank you very much! -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] FFI binding -- different behaviour under compilation and interpretation.

There is a Cabal package for this already: http://hackage.haskell.org/package/setlocale A call to `setLocale LC_ALL (Just )` in `main` fixes things. -- Jason Dusek 2009/11/13 Daniel Fischer daniel.is.fisc...@web.de: Am Samstag 14 November 2009 00:00:36 schrieb Jason Dusek:   I'm

Re: [Haskell-cafe] faster compiling for ghc

on linux. Does GHC on windows use GNU ld? Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Medical Instruments - Jason

`closecport`? Maybe you could put in a print statement in the C to find out? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Help Haskell driving Medical Instruments

if this helps. Here is the compilation script: ghc -fglasgow-exts serial.c  %1.hs -L./ -ljapi --make erase *.hi erase *.o strip %1.exe I encourage you to look into Cabal soon :) -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org

Re: [Haskell-cafe] Parsec - separating Parsing from Lexing

`argv` is `char**` and not `char*`, right?) so we introduce `stringPrim` and then build up the primitives from that. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Help Haskell driving Medical Instruments

Does marking the call `unsafe` make any difference? This is running on a *NIX of some flavour? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] What's the deal with Clean?

On Thu, Nov 5, 2009 at 6:15 PM, brian bri...@aracnet.com wrote: On Nov 5, 2009, at 8:26 AM, Jason Dagit wrote: Haskell knows when I have a list of Doubles, you know, because it's strongly typed. Then it proceeds to box them. Huh ? Imagine a computation which will yield a Double

Re: [Haskell-cafe] Arrays in Clean and Haskell

2009/11/4 Philippos Apolinarius phi50...@yahoo.ca Jason Dusek wrote: How do you read in the IOUArray? By parsing a character string or do you treat the file as binary numbers or ... ? I always pare the file. Parsing the file has the advantage of alowing me to have files of any format

Re: [Haskell-cafe] Interactive chatbot

/latest/html/libraries/base/System-IO.html#v:hSetBuffering You probably want to look at 'interact' also. Or just switch to readline as others have suggested. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: [Haskell-cafe] Arrays in Clean and Haskell

2009/11/04 Jason Dusek jason.du...@gmail.com:  ...you parse the file I imagine you in face... in face - in fact Sorry. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Arrays in Clean and Haskell

How do you read in the IOUArray? By parsing a character string or do you treat the file as binary numbers or ... ? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Re: Simple FAST lazy functional primes

do that, then getting the kth prime at run-time is O(k). Take that AKS! :) Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Re: Simple FAST lazy functional primes

On Mon, Nov 2, 2009 at 2:40 PM, Will Ness will_...@yahoo.com wrote: Jason Dagit dagit at codersbase.com writes: On Mon, Nov 2, 2009 at 1:59 PM, Will Ness will_n48 at yahoo.com wrote: Will Ness will_n48 at yahoo.com writes: One _crucial_ tidbit I've left out: _type_signature_. Adding

Re: [Haskell-cafe] Re: Libraries for Commercial Users

are. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Re: [Haskell-beginners] map question

illegal. Why should they be? I truly don't understand the resistance to this idea. :) Don't you mean 3 `(-)` 2? I'm pretty sure -, without the parens is infix and (-) is prefix. So it seems to me that you need the brackets for this to be consistent. Jason

Re: [Haskell-cafe] Need help with ghc static compile for cgi using mysql

reasonably happy considering the relative cost. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Re: Num instances for 2-dimensional types

(if you don't take 0*x = 0 as an axiom, I think there are two possibilities for 0*∞). -- Jason McCarty jmcca...@sent.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] What is a number. (Was: Num instances for 2-dimensional types)

with view patterns. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

[Haskell-cafe] ANN: json-b-0.0.4

This version fixes defective handling of empty objects and arrays. http://hackage.haskell.org/package/json-b-0.0.4 Thanks to Dmitry Astapov for this fix. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http

Re: [Haskell-cafe] Any working example of using genericserialize?

on hackage that there may not be any tests for this package and it is a 0.1 release. I'd contact the author, as it seems there is a deficiency in the documentation or a bug in the implementation. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http

Re: [Haskell-cafe] I read somewhere that for 90% of a wide class of computing problems, you only need 10% of the source code in Haskell, that you would in an imperative language.

it with your peers and show them fun and cool things you've written using Haskell. I think this is more compelling for the uninitiated than statements about perceived technical power of the language. I've heard people explain this as, showing is better than telling. Cheers, Jason

[Haskell-cafe] ANN: JSONb-0.0.2

at the bottom that has exactly the format of the user property of the schema ahead of it -- why is that? Well, `json-schema` uses a fault tolerant parsing approach; the very last Tweet was cut off and the user property's value was among the things that could be salvaged. -- Jason Dusek

Re: [Haskell-cafe] Comments requested: succ Java

2009/09/28 John A. De Goes j...@n-brain.net: Libraries are _everything_... Not exactly. Python would never have gotten a foothold over Perl, nor Java over C, if cleaner language semantics weren't enough for some shops or certain applications. -- Jason Dusek

Re: [Haskell-cafe] Cabal packages - cabbages

, that a wholesome vegetable -- good raw or pickled or in little salady things like coleslaw -- finds itself used as a disincentive. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

[Haskell-cafe] Cabal packages - cabbages

Some day, we're going to need a short, catchy name for Cabal packages. Let's call them cabbages. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Cabal packages - cabbages

can be extended to the other ones, at the cost of a few characters. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Cabal packages - cabbages

2009/09/20 Joe Fredette jfred...@gmail.com: I also agree. Hackage should also be renamed to something appropriate. The Cabbage Patch? +1 -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: [Haskell-cafe] why these two are not equivalent?

I can notice in 2 minutes of looking. Good luck! Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] why these two are not equivalent?

On Sat, Sep 12, 2009 at 12:46 PM, Jason Dagit da...@codersbase.com wrote: On Sat, Sep 12, 2009 at 12:08 PM, Diego Souza dso...@bitforest.orgwrote: Hi, I was trying to solve a simple problem in SPOJ, however, after two weeks trying almost everything I could think of, I was still getting

Re: [Haskell-cafe] RE: Darcs and NFS Resolution

library the ability to apply the correct functions transparently in accordance with the file system of the volume. Yes, and in the meantime we can implement something like this in workaround.hs. Thanks! Jason ___ Haskell-Cafe mailing list Haskell-Cafe

Re: [Haskell-cafe] NFData question

call rnf (I think). That's my understanding, but I could be wrong. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Slow IO?

, `bint` just calls my `int` and `int` calls `lazy_int` so why are there 41 million plus entries of `lazy_int`? -- Jason Dusek spoj-eugene-prof-opt-bang-acc-scc-dfold.prof Description: Binary data ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org

Re: [Haskell-cafe] Question about Lazy.IO

technical. I'm sure I'm not alone when I say I'd like to see the longer, more technical response. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Slow IO?

not a common requirement, anyways). http://hackage.haskell.org/package/bytestring-nums-0.3.0 I suspect that splitting the string into pieces and then mapping the parser over the pieces will never be faster than an all-in-one parser/tester/incrementer like the fast programs have. -- Jason

Re: [Haskell-cafe] Slow IO?

2009/08/30 Eugene Kirpichov ekirpic...@gmail.com: Here's my version that works in 0.7s for me for a file with 10^7 9's but for some reason gets a 'wrong answer' at SPOJ :) Maybe it gets a wrong answer because it reads all the input, regardless of `n`. -- Jason Dusek

Re: [Haskell-cafe] Slow IO?

I've updated Don Stewart's solution to compile with the modern ByteString libs. I'll be looking at ways to improve the performance of the `bytestring-nums` package. -- Jason Dusek http://github.com/jsnx/bytestring-nums/blob/d7de9db83e44ade9958fb3bfad0b29ede065b5dd/SPOJDons.hs

Re: [Haskell-cafe] ANN: moe html combinator

Say we have a nice thread on this and we all realize that the precedence of `do` and `case` could be changed (and changing `if` would be nice but we can't have everything). How many months/years would it take for any change in that direction to occur? -- Jason Dusek

Re: [Haskell-cafe] GUI library

into Haskell examples. You could do this as a warm up exercise before starting on your music editor. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] ANN: moe html combinator

... foo case... foo if... were always parsed as: foo (do...) foo (case...) foo (if...) This is what is usually meant. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: Re[Haskell-cafe] duction Sequence of simple Fibonacci sequence implementation

(+) fibs (tail fibs) Then to get a specific fib, zero index, you do: fib n = fibs !! n Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] ANN: gitit 0.6.1

/gitit-discuss If anyone would like to see an example of gitit using the darcs filestore (we affectionately call it 'darcsit'), you can take a look at the darcs project wiki: http://wiki.darcs.net/ Jason ___ Haskell-Cafe mailing list Haskell-Cafe

[Haskell-cafe] ANN: ByteString Nums

like this library. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Strange console IO behavior (at least on Windows)

and Linux? Is this a bug or am I doing something wrong? For me on OSX it has the intended behavior. Which is to say, every time I type a key I see the ascii value of the key. I have no idea why windows is being different. Jason ___ Haskell-Cafe mailing

Re: [Haskell-cafe] How to convert a list to a vector encoding its length in its type?

number corresponds to the length of a given list?. I'd love to see what you figure out. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] How to convert a list to a vector encoding its length in its type?

to a function that can append them, the type system won't know that you have a vector which is twice the original size. Dan On Fri, Aug 21, 2009 at 2:03 PM, David Menendezd...@zednenem.com wrote: On Fri, Aug 21, 2009 at 1:03 PM, Jason Dagitda...@codersbase.com wrote: Even with a type class

[Haskell-cafe] Re: Some trouble with AttoParsec.

Aha. From `Data.ByteString.Lazy` we have: null :: ByteString - Bool null Empty = True null _ = False So either users need to norm ByteStrings before testing them for emptiness or it needs to happen within the ByteString code... -- Jason Dusek

[Haskell-cafe] Re: Some trouble with AttoParsec.

2009/08/19 Jason Dusek jason.du...@gmail.com:  Aha. From `Data.ByteString.Lazy` we have:    null :: ByteString - Bool    null Empty = True    null _     = False  So either users need to norm ByteStrings before testing  them for emptiness or it needs to happen within the ByteString  code

Re: [Haskell-cafe] Re: simulation in the haskell way

2009/08/18 Eric Wong wsy...@gmail.com: When I was using C and Python, I used to think of most applications in an simulation way. By simulation way, do you mean object-oriented way? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe

Re: [Haskell-cafe] Re: simulation in the haskell way

. Humans tend to think of the world, and things in, in the way that they understand things in their area of expertise. If you develop expertise in Haskell (or FP in general) you will like begin to see things in functional ways. Jason ___ Haskell-Cafe

[Haskell-cafe] Observations about foldM

) return xs foldlM f = foldl (\t h - t = flip f h) . return depending on the monad. foldl1M f (x:xs) = foldlM f x xs -- Jason McCarty jmcca...@sent.com ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo

Re: DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

it doesn't. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Request for Comments - hscurrency 0.0.1

package: http://code.google.com/p/dimensional/ Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

reading research about effect systems for the sake of version control. I'll have to look into this. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

of information, and not just for files, but network, memory, etc., then you'll be able to do some extremely powerful parallelization optimization. I am challenged to imagine optimizations that would be safe in the case of File I/O. -- Jason Dusek ___ Haskell

Re: [Haskell-cafe] Re: Thinking about what's missing in our library coverage

... Thanks for the HP! Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

that for granted :) Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: DDC compiler and effects; better than Haskell? (was Re: [Haskell-cafe] unsafeDestructiveAssign?)

writing yourself. +1 -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Hack on the Delve core, with Delve and Haskell

of the GNU GPLv3. Note intended as a criticism of the GPL or your decision to use it, but does this impact people's ability to use the Delve standard libraries in their own non-GPL projects? Good luck! Jason ___ Haskell-Cafe mailing list Haskell-Cafe

Re: [Haskell-cafe] Haskell2Xml

catch on once it exists. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Hugs faster and more reliable than GHC for large list monad 'do' block

not a problem of antiquity but instead one related to what configure finds when building GHC for that system. In other words, it should be possible to make a version of GHC locally that doesn't use timer_create and then your student should be good to go. Hope that helps, Jason

Re: [Haskell-cafe] Cyclic data declarations

to work around this depending on how you want to solve it. By the way, for your StmtRec you probably want a newtype instead of a type. Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] why does the binary library require so much memory?

2009/07/31 Jeremy Shaw jer...@n-heptane.com: ...why doesn't the stuff get freed eventually? It is my understanding that the GHC runtime never lets go of memory once it has requested it. (Confirmation either way would be informative.) -- Jason Dusek

Re: [Haskell-cafe] Re: Adding a field to a data record

... And then use the module trick to switch the code around? Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

Re: [Haskell-cafe] Hugs used in circuit simulations code

for hugs. Use GHC's profiler. Figure out why and where the code is slow and then you can do something about it: http://book.realworldhaskell.org/read/profiling-and-optimization.html Jason ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http

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