There's going to be a solar eclipse in a couple of weeks visible from
lots of places with great names: Varanasi, Darjeeling (has a j in it!)
and Surat, for example.
An alignment of three cosmic bodies is a syzygy.
Many eclipse cycles seem to have neat names:
http://www.phys.uu.nl/~vgent/eclipse/
OK, figured it out... the problem was I had copied incanter.clj to
/Library/Java/Extensions. When I removed that copy, everything worked as
expected. Weird, but I'm glad it's not happening anymore.
Anand
On Mon, Jun 22, 2009 at 1:52 PM, Anand Patil <
anand.prabhakar.pa...@gmail.com&
lpful.
>
> good luck,
> David
>
>
>
> On Jun 22, 4:43 am, Anand Patil
> wrote:
> > On Mon, Jun 22, 2009 at 2:41 AM, liebke wrote:
> >
> > > Hi Anand,
> >
> > > Try changing the INCANTER_HOME variable in the clj script to the
> >
On Mon, Jun 22, 2009 at 2:41 AM, liebke wrote:
>
> Hi Anand,
>
> Try changing the INCANTER_HOME variable in the clj script to the
> absolute path to the incanter directory, instead of a relative path,
> like ./ or ../
>
> Let me know if that doesn't work.
>
Hi David,
Didn't
work, unfortunately.
On Sun, Jun 21, 2009 at 5:51 PM, carlitos wrote:
>
> On Jun 21, 5:01 pm, Anand Patil
> wrote:
> > Hi David and all,
> >
> > Just trying to get up and running with Incanter, on a Mac with the github
> > head. The clj script doesn't find part of paral
Hi David and all,
Just trying to get up and running with Incanter, on a Mac with the github
head. The clj script doesn't find part of parallel colt:
(head-mac bin) ./clj
Clojure 1.1.0-alpha-SNAPSHOT
user=> (use '(incanter core))
java.lang.NoClassDefFoundError:
cern/colt/matrix/tdouble/impl/DenseC
On Sat, Jun 20, 2009 at 11:29 AM, Jon Harrop wrote:
>
> The Task Parallel Library. It uses concurrent wait-free work-stealing
> queues
> to provide an efficient implementation of "work items" than can spawn other
> work items with automatic load balancing on shared memory machines. Cilk
> uses
>
On Thu, Jun 18, 2009 at 5:48 PM, Konrad Hinsen wrote:
>
> On 18.06.2009, at 16:47, psf wrote:
>
> > That is funny... I put a little Clojure plug into the article entitled
> > "Trailblazing with Roadrunner" in the very same issue of CiSE.
>
> Great minds think alike ;-)
>
>
> On 18.06.2009, at 18:1
On Mon, May 18, 2009 at 10:54 AM, Konrad Hinsen
wrote:
>
> On May 18, 2009, at 11:21, Anand Patil wrote:
>
> > Huh, sounds like just the thing. Security is going to be especially
> > difficult in Clojure, though. For example, say I stuck the array
> > into a ref
On Sun, May 17, 2009 at 1:15 PM, Konrad Hinsen wrote:
>
> On 16.05.2009, at 15:53, aperotte wrote:
>
> > Yes Anand, I'm worried about that. What I think the solution should
> > be is to allow mutability in the implementation of algorithms in the
> > java back end for the reasons you mentioned, bu
On Sat, May 9, 2009 at 7:09 PM, aperotte wrote:
>
> It shouldn't be a problem to maintain immutability and also perform a
> cross/cartesian product. I'm not sure I understand the problem.
It was a pretty bad example... what I meant was, in scientific computing,
people often have to take a deep
On Sat, May 2, 2009 at 11:19 PM, aperotte wrote:
>
> Hello everyone,
>
> I just uploaded some of my work on a new datatype for clojure to a git
> repository.
>
> http://github.com/aperotte/persistentmatrix
>
> A bit of the rationale and motivation for the datatype is described on
> the github pag
Clojure's great, thanks very much for making it available & supporting it!
Anand
On Fri, Mar 20, 2009 at 6:26 PM, Rayne wrote:
>
> I Anthony Simpson, with the support of fellow Clojurists hereby
> declare March 20th, the first day of spring, Rich Hickey appreciation
> day!
>
> Rich Hickey has ce
l may be sensible consists of this
question and a request for watches that respond to errors.
Thanks, Anand
On Thu, Mar 5, 2009 at 9:34 AM, Anand Patil wrote:
> Excellent point. Yes, get-watches seems like a better option.
> Anand
>
>
> On Thu, Mar 5, 2009 at 3:33 AM, Timo
Excellent point. Yes, get-watches seems like a better option.
Anand
On Thu, Mar 5, 2009 at 3:33 AM, Timothy Pratley wrote:
>
> I forgot to mention the reason I don't feel it should be an error to
> remove a non-existent watch
> user=> (dissoc {:a 1 :b 2} :c)
> {:a 1, :b 2}
>
>
> >
>
--~--~--
On Wed, Mar 4, 2009 at 10:35 AM, Anand Patil <
anand.prabhakar.pa...@gmail.com> wrote:
>
> Hi Rich,
>
> I like the flexibility of the new watches, but I'm missing a way to
> watch for errors. Currently, if an agent's action results in an error
> its watchers
On Wed, Mar 4, 2009 at 12:50 PM, Konrad Hinsen wrote:
>
> Rich,
>
> is there a reason why metadata is explicitly disabled on function
> objects?
>
> I find myself wanting to put metadata on functions frequently. It
> seems even more important for functions than for anything else, given
> that ther
Hi Rich,
I like the flexibility of the new watches, but I'm missing a way to
watch for errors. Currently, if an agent's action results in an error
its watchers aren't even triggered.
Thanks,
Anand
On Feb 27, 2:57 pm, Rich Hickey wrote:
> I've added (back)synchronouswatches(svn 1309+), which us
On Mar 3, 3:38 pm, Jeffrey Straszheim
wrote:
> I'm pretty sure I don't want an agent based model. I want clear
> transactional semantics. However, there is no reason both should not
> exist.
I think you can get solid transactions with lazy agents, since an
update corresponds to a single step/d
On Mar 3, 3:22 pm, Raffael Cavallaro
wrote:
> On Mar 3, 8:04 am, Rich Hickey wrote:
>
> > If B and C depend on A in such
> > a way that their values must be coordinated in order to be valid and
> > consistent, then maybe they shouldn't independently depend on A,
> > instead a transaction shou
On Mar 3, 1:04 pm, Rich Hickey wrote:
> I think it is important to embrace asynchrony and concurrency as
> Clojure does. Any Cells-for-Clojure that presumes the world is a
> single synchronous chain of events would be a misfit. The whole notion
> of a 'current step' is suspect.
I'd appreciate it
On Mar 2, 2:34 pm, Anand Patil
wrote:
> On Mar 2, 12:48 pm, Rich Hickey wrote:
> > On Mar 2, 2009, at 5:15 AM, Anand Patil wrote:
> > > On Mar 1, 10:58 pm, Rich Hickey wrote:
> > > If you'll bear with me a bit longer- what if I set breadth=1000 and
> >
On Mar 2, 12:48 pm, Rich Hickey wrote:
> On Mar 2, 2009, at 5:15 AM, Anand Patil wrote:
>
>
> > On Mar 1, 10:58 pm, Rich Hickey wrote:
> >> On Mar 1, 2009, at 1:53 PM, Anand Patil wrote:
> >> I've made futures use the Agents' CachedThreadPool
On Mar 1, 10:58 pm, Rich Hickey wrote:
> On Mar 1, 2009, at 1:53 PM, Anand Patil wrote:
> I've made futures use the Agents' CachedThreadPool, which should
> prevent the thread pool exhaustion (svn 1316). You shouldn't worry
> about the expense of the threads
On Mar 2, 1:16 am, MikeM wrote:
> Not sure if I understand what you need, but could you build on the
> existing capability to send to the current agent: (send *agent* ...) ?
> You could have the agent send to itself, then exit the function with
> some work left to do that would be restarted on th
Hi all,
My concurrent dabblings in Clojure have been a real pleasure so far.
In terms of concurrency, it's just in a completely different league
from any other language I've tried. However, I think agents could be
made even more friendly by allowing them to temporarily surrender
their place in th
Never mind, I get it now.
Thanks,
Anand
On Feb 27, 4:32 pm, Anand Patil
wrote:
> Hi Rich,
>
> On Feb 27, 2:57 pm, Rich Hickey wrote:
>
> > I've added (back) synchronous watches (svn 1309+), which used to exist
> > for agents, now for all reference
Hi Rich,
On Feb 27, 2:57 pm, Rich Hickey wrote:
> I've added (back) synchronous watches (svn 1309+), which used to exist
> for agents, now for all reference types.
>
> (defn add-watch
>
> "Experimental.
>
> Adds a watch function to an agent/atom/var/ref reference. The watch
> fn must be a
On Feb 26, 5:27 pm, mikel wrote:
> On Feb 26, 10:58 am, Anand Patil
> wrote:
>
> > On Feb 26, 4:41 pm, mikel wrote:
>
> > > Other people have explained currying and partial application, and why
> > > it doesn't normally spply the feature you want.
>
On Feb 26, 4:41 pm, mikel wrote:
> Other people have explained currying and partial application, and why
> it doesn't normally spply the feature you want.
I'd be interested in reading about this if you know of a link.
> Normally, in a lnaguage that supplies partial application, the way to
> a
Sorry, I thought I had pushed 'stop' in time to stop the first
response.
On Feb 26, 4:16 pm, Anand Patil
wrote:
> Thanks for the responses, guys.
>
> >> - Partially apply a function to any of its arguments, not just the
> >> first one
> >That's alr
tially apply to other arguments by doing this: #(fred %1
> > some-arg %2 other-arg).
>
> > "partial" could not easily support "unapplying" it.
>
> > On Thu, Feb 26, 2009 at 10:24 AM, Anand Patil <
> > anand.prabhakar.pa...@gmail.com> wrote:
Thanks for the responses, guys.
>> - Partially apply a function to any of its arguments, not just the
>> first one
>That's already the case, haven't you made a little test ?
I meant I want to apply it out of sequence, sorry.
> You can easily partially apply to other arguments by doing this: #(
Hi all,
I could use a version of 'partial' that would allow me to:
- Partially apply a function to any of its arguments, not just the
first one
- 'Unapply' a partially-applied function from one of its arguments.
Is any such thing already available?
Thanks,
Anand
--~--~-~--~~---
On Feb 24, 1:32 pm, Michel Salim wrote:
> On Tue, Feb 24, 2009 at 4:44 AM, Anand Patil
>
> wrote:
>
> > Thanks Miʃel,
>
> > On Feb 23, 10:15 pm, Michel Salim wrote:
>
> >> What's the object on which .countDown is called? You need to find
>
Thanks Miʃel,
On Feb 23, 10:15 pm, Michel Salim wrote:
>
> What's the object on which .countDown is called? You need to find
> where it's first declared and give it a type annotation.
>
It's created here:
let [
latch (java.util.concurrent.CountDownLatch. n)
...
Sorry if I'
This blind stab worked... is it correct?
(if cell-updated?
(if (not (:updating @cell))
(.countDown #^java.util.concurrent.CountDownLatch
latch
Thanks,
Anand
On Feb 23, 5:20 pm, Anand Patil
wrote:
> Hi all,
>
> I'm getting
>
> Reflectio
Hi all,
I'm getting
Reflection warning, line: 150 - reference to field countDown can't be
resolved.
from
(if cell-updated?
(if (not (:updating @cell))
(.countDown latch
Is there any way to get rid of it?
Thanks,
Anand
--~--~-~--~~~---~-
Hi Tim, thanks for the feedback!
On Feb 21, 11:16 am, Timothy Pratley wrote:
> (1) auto-agents by SS in contrib has a more convenient syntax [maybe
> you can mimic it]
Agreed, it is nicer. At the moment 'def-cell' is already a stretch for
me, but maybe someday I'll get there. :)
> (2) I can a
rsion.
Thanks,
Anand
On Feb 19, 6:46 pm, Anand Patil
wrote:
> Hi all,
>
> I would really appreciate some comments and criticism on
> mycellsimplementation, which I've uploaded to this group's files as
> dataflow.clj . My goal was to fully exploit the available concurrency
Hi all,
I would really appreciate some comments and criticism on my cells
implementation, which I've uploaded to this group's files as
dataflow.clj . My goal was to fully exploit the available concurrency,
but not do any unnecessary cell evaluations.
My solution is lazy rather than push-based;
On Feb 8, 9:03 pm, Dan wrote:
> > (def a (ref 1))
> > (def b (ref 1))
>
> > ; Do these concurrently, either from separate agents or using pmap
> > (dosync (commute b error-throwing-fn a))
> > (dosync (commute a + @b))
>
> > I want to have the option to abort the first transaction without
> > roll
On Feb 8, 7:29 pm, Shawn Hoover wrote:
> On Sun, Feb 8, 2009 at 12:23 PM, Anand Patil <
>
> anand.prabhakar.pa...@gmail.com> wrote:
>
> > Hello again,
>
> > In my application, I'll frequently want to quickly discard all the
> > changes made during a t
Hello again,
In my application, I'll frequently want to quickly discard all the
changes made during a transaction involving many refs. I don't want to
force the refs to roll back to their values at the beginning of the
transaction, I just want to end the transaction immediately and skip
the write
Hi all,
Say I have a collection of delays, some of which need to get others'
values in order to compute (there are no cyclic dependencies). If I
just pmap force over the entire collection, do I run the risk of
filling up a thread pool with operations that aren't ready to go yet?
Would it be bette
I agree & don't mean to complain. I'm just flagging the issues to make
it easier for whoever goes through the docs after clojure 1.0 is
tagged.
Anand
On Feb 4, 9:45 am, Zak Wilson wrote:
> The namespace is correct on clojure.org/api, but there it doesn't
> mention that it has a dependency that
On Feb 3, 11:09 pm, Rich Hickey wrote:
> On Feb 3, 4:43 pm, Anand Patil
> wrote:
> No, it's not. as the docs for preduce say:http://clojure.org/api#preduce
>
> "Also note that (f base an-element) might be performed many times"
>
> in fact, an arbitrary n
Hi all,
Messing around with preduce at the REPL I saw this:
user=> (defn q [sofar new] (do (print new sofar"\n") (+ (+ 1 new)
sofar)))
#'user/q
user=> (reduce q 0 [1 2
3])
1 0
2 2
3 5
9
user=> (preduce q 0 [1 2
3])
3 2
6 1
8
It looks like preduce takes its arguments in the opposite order from
r
OK, I get it:
- parallel.clj writes into the namespace 'clojure.parallel, not
plain 'parallel as written on clojure.org/other_libraries
- parallel.clj needs to be on my path, not my classpath.
That wasn't so bad, but It'll be easier if the examples on the website
were brought up to date.
Che
Thanks Zak,
With the other jar I could load parallel.clj without errors, but I
wasn't able to refer to the parallel namespace as on clojure.org/
other_libraries, nor was preduce present in the user namespace:
user=> (load-file "parallel.clj")
nil
user=> (refer 'parallel)
java.lang.Exception: No
Hi all,
I'm using the system java on Mac OS Leopard, and confused about how to
get the parallel library working. I've got the necessary jar file on
my classpath:
sihpc03:clojure anand$ echo $CLASSPATH
/usr/local/clojure:/Library/Java/Extensions
sihpc03:clojure anand$ ls /Library/Java/Extensions/
On Jan 25, 5:27 pm, Chouser wrote:
> On Sun, Jan 25, 2009 at 8:01 AM, Chouser wrote:
> > On Sun, Jan 25, 2009 at 7:06 AM, Anand Patil
> > wrote:
>
> >> I'd like to repeat my request for an example of definline usage; I
> >> feel I've tried everythi
Hi all,
I'd like to repeat my request for an example of definline usage; I
feel I've tried everything.
user=> (definline f [x] x)
java.lang.ExceptionInInitializerError (NO_SOURCE_FILE:1)
user=> (definline [x] x)
java.lang.NullPointerException (NO_SOURCE_FILE:2)
user=> (definline (f [x] x))
java.
Hi all,
Does anyone have, or know where I can find, simple working examples
showing the use of:
- definline
- defmacro with all the fields, (defmacro name doc-string? attr-map?
([params*] body) + attr-map?)
I get doc-string, but don't understand:
- attr-map
- (...) + attr-map
- the preci
On Jan 19, 1:25 pm, Chouser wrote:
> On Mon, Jan 19, 2009 at 4:07 AM, Anand Patil
>
> wrote:
>
> > Sorry, I was not being clear. Why not just let (deref 5) return 5? I
> > would consider that syntactic sugar, as it would make it easier to
> > deref a mixed vector
On Jan 19, 1:05 am, Stuart Sierra wrote:
> On Jan 18, 6:56 pm, Anand Patil
> wrote:
>
> > Would it make any sense to make @ polymorphic so that @x return x's
> > value when x is a var rather than raising an error?
>
> Actually, it already is:
>
> user> (
Timothy, Stephen and Stuart,
Thanks for three very informative and understandable responses! It's
very encouraging to see that such support is available when
approaching a new language. I look forward to further exploration of
Clojure.
The var/value/symbol relationship continues to be a bit slip
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