[Haskell-cafe] Re: FASTER primes

Heinrich Apfelmus quantentunnel.de> writes: > > Will Ness wrote: > > But I get the impression that GHC isn't working through equational > > reasoning?.. > > I see all this talk about thunks etc. > > Sure it does. Concerning the thunks, they're part of the implementation > of the reduction mode

[Haskell-cafe] Re: FASTER primes

Daniel Fischer web.de> writes: > > Am Freitag 08 Januar 2010 19:45:47 schrieb Will Ness: > > Daniel Fischer web.de> writes: > > > It's not tail-recursive, the recursive call is inside a celebrate. It is (spMerge that is). It calls tail-recursive celebrate in a tail position. What you've don

Re: [Haskell-cafe] Capped lists and |append|

Everything here makes much more sense than the previous implementation -- I've upped 1.2, which splits up |append|, implements the instances in terms of Monoid, etc. Also included is |toList| and |toList_| , which are like functions defined in Felipe's earlier email to me. The first returns the ca

Re: [Haskell-cafe] Re: FASTER primes

Am Freitag 08 Januar 2010 19:45:47 schrieb Will Ness: > Daniel Fischer web.de> writes: > > > > mergeSP :: Integral a => People a -> People a -> People a > > mergeSP p1@(P a _) p2 = P (a ++ vips mrgd) (dorks mrgd) > > where > > mrgd = spMerge (dorks p1) (vips p2) (dorks p2) > >

Re: [Haskell-cafe] Re: [arch-haskell] Upgrading Arch Linux Haskell Packages

Even while having a break he's blazing fast with his replies! 2010/1/8 Ivan Lazar Miljenovic > Don Stewart writes: > > There's a batch upgrade, I've just been travelling! > > Yeah, let Don have a break for once! > > Oh, since you're here Don, how do I do ... ? ;-) > > -- > Ivan Lazar Miljen

Re: [Haskell-cafe] Capped lists and |append|

John Millikin wrote: Earlier today I uploaded the capped-list package; I didn't think there would be any interest, since it's a relatively trivial data structure, but already there's been three emails and an IRC convo about it. Since uploading, there's been a big problem pointed out to me regard

Re: [Haskell-cafe] Capped lists and |append|

[Disclaimer: I didn't really read all the thread from which this data structure originated on Cafè =).] On Fri, Jan 08, 2010 at 03:38:15PM -0800, John Millikin wrote: > Since uploading, there's been a big problem pointed out to me > regarding this structure, namely the possible definitions of |app

[Haskell-cafe] Capped lists and |append|

Earlier today I uploaded the capped-list package; I didn't think there would be any interest, since it's a relatively trivial data structure, but already there's been three emails and an IRC convo about it. In short, this is Heinrich Apfelmus's "Train" type from

Re: [Haskell-cafe] Infix instance headers

Simon, I discovered that the following example also won't parse in ghc-6.12.1 because of the infix 'MayOpen' constraint: with ∷ (Resource resource, MonadCatchIO pr) ⇒ resource → (∀ s. s `MayOpen` resource ⇒ RegionalHandle resource (RegionT s pr) → RegionT s pr α) → pr α Is this al

Re: [Haskell-cafe] Re: ANNOUNCE: Clutterhs 0.1

(Sorry for replying to this old thread.) On Sun, Nov 29, 2009 at 08:09:18AM +0100, Gour wrote: > What do you think about binding Moblin's nbtk (now it's called mx) ? Just out of curiosity, did anyone do something about Moblin's toolkit and Haskell? Thanks! :) -- Felipe.

[Haskell-cafe] Re: FASTER primes

Will Ness yahoo.com> writes: > > > That might be why Daniel's structure is better: it plunges down faster than > mine. > > "treefold" structure was: > (2+4) + ( (4+8) + ( (8+16) + ( (16+32) + ( (32+64) + ... > dpths: 3 4 4 5 5 66 77 8 this sho

[Haskell-cafe] Re: FASTER primes

Daniel Fischer web.de> writes: > roll   = scanl (+) > wheel  = 2:4:2:4:6:2:6:4:2:4:6:6:2:6:4:2:6:4:6:8:4:2:4:2: >    4:8:6:4:6:2:4:6:2:6:6:4:2:4:6:2:6:4:2:4:2:10:2:10:wheel > wheel11 = res > where > snms = scanl (+) 11 (take 47 wheel) > nums = tail $ scanl (

Re: [Haskell-cafe] Testing for statistical properties

Thanks! I had reached the same conclusion, so I am glad to see that you already wrote code to do this for me. :-) There is a bug in the version that you posted, though: you missed one of the terms in the u < 0.755 case, so the c2 constant goes completely unused. Here is my modified version

[Haskell-cafe] Re: FASTER primes

Daniel Fischer web.de> writes: > > > The below code is now a well-behaved memory citizen (3MB for the 100 millionth prime, about the same as the PQ code). It still is considerably slower than the PQ code. > In terms of MUT times as reported by +RTS -sstderr - as well as (MUT+GC) times - (mea

Re: [Haskell-cafe] telling ghc to run several jobs in parallel

There is no such option yet, but there was some work recently on making GHC more amenable to doing jobs in parallel (from what I understand there's a global variable or two that makes it hard). Dan On Fri, Jan 8, 2010 at 6:33 PM, Paul Brauner wrote: > Hi, > > I have to processors but ghc --make

[Haskell-cafe] Re: FASTER primes

Daniel Fischer web.de> writes: > > > Am Donnerstag 07 Januar 2010 11:43:44 schrieb Heinrich Apfelmus: > > Will Ness wrote: > > > > Hm? In my world view, there is only reduction to normal form and I don't > > see how "allocate its own storage" fits in there. Okasaki having shown > > something to

[Haskell-cafe] telling ghc to run several jobs in parallel

Hi, I have to processors but ghc --make only uses one of them, even if some files could be compiled in parallel. Is there some option similar to the -j one of the make tool ? (I read the manual but didn't find it) Regards, Paul ___ Haskell-Cafe mailin

Re: [Haskell-cafe] Typed Configuration Files

Hello Sebastian, Friday, January 8, 2010, 3:53:53 PM, you wrote: > Neil Mitchell's cmdargs package [1] is pretty neat. It can be used to > parse command-line arguments into a user-defined data structure. > Is there something similar for parsing config files? Lua language may be used to describe

Re: [Haskell-cafe] Typed Configuration Files

Hi, >> Seriously, cmdargs is *brilliant*.  It's also magic (to me). > > Not only to you in fact it is black magic since it uses unsafePerformIO :( The problem isn't that it's black magic or that it uses unsafePerformIO - the problem is that it's horribly impure, so doesn't obey referential transp

Re: [Haskell-cafe] Typed Configuration Files

Excerpts from Magnus Therning's message of Fri Jan 08 16:25:31 +0100 2010: > On Fri, Jan 8, 2010 at 12:53 PM, Sebastian Fischer > wrote: > > Dear Café, > > > > Neil Mitchell's cmdargs package [1] is pretty neat. It can be used to parse > > command-line arguments into a user-defined data structure.

Re: [Haskell-cafe] Typed Configuration Files

On Fri, Jan 8, 2010 at 12:53 PM, Sebastian Fischer wrote: > Dear Café, > > Neil Mitchell's cmdargs package [1] is pretty neat. It can be used to parse > command-line arguments into a user-defined data structure. > > Is there something similar for parsing config files? If you write one I most cert

Re: [Haskell-cafe] space leaks and optimizations

> > > 2) While each step is predictable, the overall behavior of a lazy > program can be rather surprising. So one must be very careful. GHC > provides two ways to control the evaluation order, seq and bang > patterns, but I am not sure which of these (if any) is the right tool. > Consider the foll

[Haskell-cafe] ANNOUNCE: SourceGraph-0.6.0.1

I realised soon after I sent the announcement email that there was a bug in one of the new "subtle" features that I didn't list, namely the background shading of directories in import visualisation. As such, SourceGraph 0.6.0.1 contains this fix. There were also two other features in 0.6.0.0 that

[Haskell-cafe] Splitting a Hackage project (was ANN: Streaming Component Combinators 0.4)

I couldn't find any Hackage policy guideline on the appropriate balance between the package list size and package size, so I'll just ask the question. I have released the version 0.4 of my SCC package yesterday. In this particular release, there is at least one module that's nicely self-con

[Haskell-cafe] ANNOUNCE: SourceGraph-0.6.0.0 and Graphalyze-0.9.0.0

I'm pleased to announce the latest releases of SourceGraph [1] and Graphalyze [2]. [1]: http://hackage.haskell.org/package/SourceGraph [2]: http://hackage.haskell.org/package/Graphalyze SourceGraph is a program that performs static code analysis on Haskell projects on the by applying graph theore

[Haskell-cafe] Typed Configuration Files

Dear Café, Neil Mitchell's cmdargs package [1] is pretty neat. It can be used to parse command-line arguments into a user-defined data structure. Is there something similar for parsing config files? There are a number of config file parsers on Hackage. But even the most sophisticated one I

[Haskell-cafe] ANN: hakyll-0.4

Hello, I am announcing the release of hakyll-0.4. Hakyll is a static site generator library written Haskell. It is written in a very configurable way and uses an xmonad-like DSL for configuration. Notable changes since the last big release (0.1) include: - CSS compression - Dependency handling (a

[Haskell-cafe] space leaks and optimizations

Dear Haskellers, Recently I have been looking for a programming language that would be suitable for small scientific and recreational projects and palatable to a picky person like me. (I do theoretical physics and some math; I do not program very often.) Haskell and Clean look attractive from a m

Re: [Haskell-cafe] Testing for statistical properties

Hi Greg, Assuming this is a one-dimensional distribtution, you should use a kolmogorov-smirnov test to test this: http://en.wikipedia.org/wiki/Kolmogorov-Smirnov_test I've implemented to the KS distribution from the CERN code linked in the wikipedia article, here: http://github.com/glutamate/sa

Re: [Haskell-cafe] Re: [arch-haskell] Upgrading Arch Linux Haskell Packages

Don Stewart writes: > There's a batch upgrade, I've just been travelling! Yeah, let Don have a break for once! Oh, since you're here Don, how do I do ... ? ;-) -- Ivan Lazar Miljenovic ivan.miljeno...@gmail.com IvanMiljenovic.wordpress.com ___ Ha

[Haskell-cafe] Re: [arch-haskell] Upgrading Arch Linux Haskell Packages

cetin.sert: > Hi, > > Is there a way to manually upgrade Haskell packages in the aur repository of > Arch Linux which were previously contributed automatically by arch-haskell? > Or is there a batch upgrade planned for the near future? > What is the mailing list for arch There's a batch upgrade,

[Haskell-cafe] Upgrading Arch Linux Haskell Packages

Hi, Is there a way to manually upgrade Haskell packages in the aur repository of Arch Linux which were previously contributed automatically by arch-haskell? Or is there a batch upgrade planned for the near future? What is the mailing list for arch Best Regards, Cetin _