Hey all,
Does anyone know of a moving window function? I'm curious if there
are any tools like this for digital signals processing, 30-day moving
averages, etc.
Sean
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Hi,
If I remember correctly and if it has not changed since, for the
second solution (where there is the classes folder - which I would
recommand btw, aka not mixing source folders and compilation artifacts
folders -), the classes folder (or any other name you could set
*compile-path* to) also *m
On Jun 22, 2009, at 11:36 PM, Christophe Grand wrote:
> Selecting the top N out of n items is a O(n*sqrt(N)) operation so
> it's linear when n dominates N and thus must beat take + sort. Plus
> it won't retain the whole realized seq in memory.
Just because I'm curious, I can see how to do m
Hi all,
On Tue, Jun 23, 2009 at 4:16 AM, Four of Seventeen wrote:
>
> On Jun 22, 6:46 pm, "beatle...@gmail.com" wrote:
> > (take 10 (sort (for [x (range 100)] (rand)
> >
> > Now the problem is the memory usage, as it does not merely uses memory
> > space for 10 items, but it keeps a refe
Another advantage to the second form is that it doesn't collide with
any versions of x you may have defined
;This will do weird stuff to x
(let [x 2] (take-until1 (do-stuff-to-x)))
;This will behave like you expect
(let [x 2] (take-until2 (do-stuff-to-x)))
Meikel wrote a good set of guidelines
macro #2 is the idiomatic way of writing a macro. You generally
shouldn't worry about the expanded form of the macro.
All that extra clojure.core/ stuff is actually for your benefit.
Imagine if you use that macro in a different namespace where take-
while has been redefined. You probably intende
On Jun 22, 6:46 pm, "beatle...@gmail.com" wrote:
> (take 10 (sort (for [x (range 100)] (rand)
>
> Now the problem is the memory usage, as it does not merely uses memory
> space for 10 items, but it keeps a reference to the entire sequence.
> If I leave out the sort its all ok, and done la
I'm going to bash my own Stack Overflow post by repeating my
disclaimer about not learning from it. I literally learned about
mutation today and picked up Clojure about 3 days ago (although I've
used Lisp and Java before so the learning curve wasn't huge).
Otherwise, I'm glad if it helps :)
On J
On Jun 22, 8:24 pm, arasoft wrote:
> I just wrote my first practice macro, first without and then with
> syntax quoting:
>
> (defmacro take-until1 [function sq]
> (list 'take-while (list 'fn (vector 'x) (list 'not (list function
> 'x))) sq))
>
> (defmacro take-until2 [function sq]
> `(take-wh
I think the best way for me to approach this is to ask what you want to do.
This is a generalization, but most code doesn't need to call eval - the
REPL does, and some advanced uses of generating code at runtime based on
data. The normal Lisp approach for code that generates code is macros
(defma
On Jun 23, 12:30 am, Thibaut Barrère
wrote:
> btw - if there is a better way to achieve this, I'm ready to learn :)
There's the main-proc in clojure.lang.Compile, which uses the system
property clojure.compile.path to define the output directory and
accepts a list of libs to compile. (I don't kn
On Mon, Jun 22, 2009 at 5:11 PM, Nicolas Oury wrote:
>
> Of course, there is eval, but eval is not very competent in manipulating
> namespace and bindings at runtinme.
eval is exactly what the REPL uses, one call to eval per
top-level form. In several examples you put an 'ns' form
and others int
Thank you for your help. I have posted a message on the Enclojure
group yesterday and I am still waiting for it to show up...
On Jun 22, 5:46 am, "Stephen C. Gilardi" wrote:
> On Jun 21, 2009, at 11:17 PM, arasoft wrote:
>
> > When I enter the following function into the REPL it compiles and
> >
I just wrote my first practice macro, first without and then with
syntax quoting:
(defmacro take-until1 [function sq]
(list 'take-while (list 'fn (vector 'x) (list 'not (list function
'x))) sq))
(defmacro take-until2 [function sq]
`(take-while (fn [x#] (not (~function x#))) ~sq))
Both seem
> Does anyone know how to sort and avoid large memory consumptions?
well, presumably the sort needs to look at all the data in order to be
able to sort it, no?! so it is kinda just a tough cookie reality that
the memory will be used.
on the other hand, maybe you can do some form of the Schwartzi
Dear all,
I really love programming in Clojure, and have done so for the past
couple of months, building my company's software recommendation engine
in Clojure (not in production yet), which I originally wrote in Ruby.
However I have run into the following a memory problem, which actually
was poi
Hi,
I found instructions about how to compile from the REPL very quickly,
but it took me longer to manage to compile from the command-line. I'm
sharing it here in case it's useful to someone else.
To compile a .clj file, I've used this:
java -cp libs/clojure-1.0.0.jar:. clojure.main -e "(set! *
seems like Clojure has a range of choices when it comes to dealing
with mutation. is there a great online tutorial that explains what the
options are, and that suggests when to not/use them? many thanks.
oh wait.
http://stackoverflow.com/questions/1028318/clojure-mutable-storage-types
:-)
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On Jun 22, 2009, at 3:45 PM, Wilson MacGyver wrote:
> that seems very hard to do.
I wrote some code that called Clojure from Jython just to see if it
would work. All you have to do is use :gen-class to compile it and
call it as though it's Java. I haven't used Scala so I'm not sure what
it
> So Raoul, did you give it a try after all of this?
in a word... no.
:-}
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that seems very hard to do. How would you grantee no side effect from other
languages?
On Mon, Jun 22, 2009 at 3:18 PM, wilfred wrote:
>
> So Raoul, did you give it a try after all of this?
>
> On May 1, 7:40 pm, Raoul Duke wrote:
> > hi,
> >
> > has anybody experimented with using Clojure code
So Raoul, did you give it a try after all of this?
On May 1, 7:40 pm, Raoul Duke wrote:
> hi,
>
> has anybody experimented with using Clojure code from e.g. Scala, to
> get Clojure STM goodness in other languages?
>
> thanks.
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Dear all,
I am quite new to clojure, and I can't find any good way to generate
code at runtime.
Of course, there is eval, but eval is not very competent in manipulating
namespace and bindings at runtinme.
For example, this:
- (binding [*ns* *ns*]
(eval '(do (ns Blop (:gen-class))
On Monday 22 June 2009 22:33:24 Stephen C. Gilardi wrote:
> On Jun 22, 2009, at 5:53 PM, Jon Harrop wrote:
> > If that is spawning a new thread every time a future is created then
> > it is
> > really for concurrent programming rather than parallel programming.
>
> The thread is from a cached thre
On Jun 22, 2009, at 5:53 PM, Jon Harrop wrote:
If that is spawning a new thread every time a future is created then
it is
really for concurrent programming rather than parallel programming.
The thread is from a cached thread pool provided by the Executors class:
http://java.sun.com/javase/
On Monday 22 June 2009 12:01:19 Konrad Hinsen wrote:
> Java threads, according to the documentation:
>
> clojure.core/future
> ([& body])
> Macro
>Takes a body of expressions and yields a future object that will
>invoke the body in another thread, and will cache the result and
>return
BerlinBrown napisał(a):
> I want to make it clear, that it probably isn't Clojure's memory
> problem but something with my code.
>
> Anyway, I was trying to figure out my heap memory goes up so much on
> various operations in my application. Sure, it could be anything but
> I know I am doing so
On Jun 21, 11:02 pm, Pinocchio wrote:
> CuppoJava wrote:
> > I'm still not very clear about what JavaFX actually is and what's its
> > relation to Java. Do you know of any links that explain it clearly?
>
> Its basically a way of declaring Swing GUI items and their layout. One
> of its cool fea
This won't work unfortunately, because it means that the in-memory transaction
has already commited before the disk write is performed by the agent. If the
application crashed at that point, your write was not durable.
-- Sent from my Palm Pre
ataggart wrote:
On Jun 20, 4:59 pm, Rowdy Rednos
On Jun 22, 12:32 pm, Marko Kocić wrote:
> Have you tried (.close stream) in the end of let block?
>
> On 22 јун, 16:10, BerlinBrown wrote:
>
> > I want to make it clear, that it probably isn't Clojure's memory
> > problem but something with my code.
>
> > Anyway, I was trying to figure out my
On Jun 20, 4:59 pm, Rowdy Rednose wrote:
> On a side-note: I actually think it can make sense to do io in
> transactions in Clojure, and I believe (knowing that transactions can
> be replayed) it is possible to use that to e.g. implement a
> transaction log written to disk that could be used to
kedu pmf
What about this (str *ns*)? I remember reading it from chouser's post.
Regards,
Emeka
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Have you tried (.close stream) in the end of let block?
On 22 јун, 16:10, BerlinBrown wrote:
> I want to make it clear, that it probably isn't Clojure's memory
> problem but something with my code.
>
> Anyway, I was trying to figure out my heap memory goes up so much on
> various operations in m
> Maybe I'm just perverse, and I bet *nobody* here will agree with me,
> but
> sometimes I feel "wrong" when I use a language like a Lisp, with its
> symbolic and meta-everything sweet spot, to do something as brutish
> and
> mundane as picking apart awful binary formats and chewing through
>
Just another 2¢ in case someone stumbles across this thread from a
search…
I've actually seen oddities like this on OpenSolaris and my Mac, too,
when running from a jar: I'm a little hazy on the details (working
late is not good for the memory!) but IIRC there was some unhappy
interaction
On Sun, 21 Jun 2009 14:39:37 +0100, Jon Harrop
wrote:
>
> I had not looked at Intel's offering because it does not (AFAIK) support
> accurate garbage collection. Also, it is worth noting that there is no
> difference between data and task parallelism in a genuine functional
> language.
>
We
Excellent, I'm glad you figured it out. I'll note the problem with /
Library/Java/Extensions, in case it happens to others in the future.
Thanks,
David
On Jun 22, 9:11 am, Anand Patil
wrote:
> OK, figured it out... the problem was I had copied incanter.clj to
> /Library/Java/Extensions. When
On Jun 22, 2009, at 15:11, Anand Patil wrote:
> 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.
I have seen strange behaviour with Clojure
I want to make it clear, that it probably isn't Clojure's memory
problem but something with my code.
Anyway, I was trying to figure out my heap memory goes up so much on
various operations in my application. Sure, it could be anything but
I know I am doing something wrong.
Here is the applicati
Hi,
> Yup, you can either using binding to create a thread-local value for
> *compile-path*, or use set! to alter the root binding. Usage of set!
> is usually discouraged outside of the REPL, I believe, but it's an
> option.
It works! I just used:
(set! *compile-path* ".")
The need for classes
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> wrote:
> Hi D
There's already a miglayout wrapper in contrib. It seemed usable when
I looked at it.
On Jun 22, 7:35 am, Laurent PETIT wrote:
> Hi,
>
> BTW, if it can be an option for you, there's also the MigLayout layout
> manager (http://www.miglayout.com/) that allows to write constraints
> as Strings. It
Hi David, no worries, thanks for trying. I'll let you know if I find a
solution.
Cheers
Anand
On Mon, Jun 22, 2009 at 1:41 PM, liebke wrote:
>
> Anand, you've stumped me! You can import the class directly, but you
> can't load incanter.core because it can't import the class? I'm not
> sure what
Anand, you've stumped me! You can import the class directly, but you
can't load incanter.core because it can't import the class? I'm not
sure what would cause that behavior, and I can't reproduce it.
Whenever I encounter weird errors like this, I try rebooting. You
might also try cloning incanter
On Mon, Jun 22, 2009 at 7:15 AM, Thibaut Barrère
wrote:
>
> I read that I should be able to change *compile-path* (I'd like to set
> it to the same folder where the .clj files is).
>
> Is it possible and how can I achieve that ?
Yup, you can either using binding to create a thread-local value fo
Hi,
I'm just starting to learn about clojure, partly to be able to
integrate it into a jruby+java audio processing project (http://
github.com/thbar/opaz-plugdk/tree/master).
I want to use ahead-of-time compile. I managed to compile an
existing .clj file (as long as a classes folder exist).
I r
Hi all,
Long time reader, first time poster. Thanks to Rich and the other
contributors for all the great work on Clojure.
I recently had a chance to use Clojure on a non-trivial project, which
required integrating with a number of Java libraries. In the course of
that I was getting tired of swit
Hi all,
Long time reader, first time poster. Thanks to Rich and the other
contributors for all the great work on Clojure.
I recently had a chance to use Clojure on a non-trivial project, which
required integrating with a number of Java libraries. In the course of
that I was getting tired of swit
Hi,
BTW, if it can be an option for you, there's also the MigLayout layout
manager ( http://www.miglayout.com/ ) that allows to write constraints
as Strings. It has already been mentioned on this ml, so maybe there's
clojure stuff done for integrating it more closely with clojure ?
HTH,
--
Lau
On Jun 20, 2009, at 12:29, 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
> t
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.
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