Oups, the repository I checked out weeks ago was on Source Forge, not
on Google Code.
I missed Rich's email Dec. 17th about moving stuff to Google Code. Just
found it in my Clojure mail
folder (around 6,500 messages).
I was rushing to get the final fixes for the production release January
6th and
On Wed, Jan 28, 2009 at 12:10 AM, .Bill Smith wrote:
>
> I'm trying to write a helper macro for invoking a class's main.
> Here's the macro:
>
> (defmacro main [class & args]
> #^{:doc "Invoke class's main with specified arguments, which are
> automatically stringified"}
> (if (= (count args) 0
On Tue, Jan 27, 2009 at 11:53 PM, Luc Prefontaine
wrote:
>
> No need for an official release, if shell_out.clj becomes available in SVN
> (and any dependencies)
> that's fine with me.
I am confused. shell_out.clj *is* in SVN:
http://code.google.com/p/clojure-contrib/source/browse/trunk/src/clo
On Tue, Jan 27, 2009 at 5:38 PM, Chouser wrote:
>
> On Tue, Jan 27, 2009 at 9:20 AM, Daniel Jomphe wrote:
>>
>> Michael Wood wrote:
>>
>>> I've seen various code snippets where people use something# in
>>> functions. Is there any point to this or gensym except in a macro?
>
> The suffix# isn't
Timothy Pratley a écrit :
> I want to grow a tree programmatically so have been trying zippers:
>
> (defn insert-parent [loc n]
> (clojure.zip/replace loc (clojure.zip/make-node
> loc n loc)))
> (println (clojure.zip/root (insert-parent (clojure.zip/seq-zip (list
> 1
>
>
> The technique was first described by Craig Reynolds in the 1980s and has
> since then made it's way into many contemporary games. The algorithm is
> interesting in that it's fairly computationally intensive. Each boid's
> motion is determined by calculating it's distance from every other bo
I want to grow a tree programmatically so have been trying zippers:
(defn insert-parent [loc n]
(clojure.zip/replace loc (clojure.zip/make-node
loc n loc)))
(println (clojure.zip/root (insert-parent (clojure.zip/seq-zip (list
1)) 2)))
(println (clojure.zip/root (clo
Dear Clojurians,
After my obsessed stint with object orientation, I went on to a new obsessed
stint with basic functional programming with the hope of converting a nice
Java boid simulation written in the popular Processing pedagological tool.
I would like to find out if anyone has pointers on im
Why do we have both repeat and replicate? I can sort of keep them straight,
but as they only differ by arity I wonder if they can be combined... or if
I'm missing a subtle reason for separate names. A user in IRC threw out the
possibility of infinite vs. finite functions, but interleave and map see
On Jan 27, 2009, at 3:57 PM, wubbie wrote:
Why defn ends with -(dash)?
(defn- mire-handle-client [in out]
A good approach to finding out what a function does is to consult "doc":
(doc defn-)
--Steve
smime.p7s
Description: S/MIME cryptographic signature
Where did you find build version 8.1, #9678? I'm looking at their web
site, and all I see is version 8.01, build 9164.
Also, when I tried following the instructions for the plugin, startup
of Idea never gets past the splash screen. I have a message into
JetBrains support about it.
- Keith
On
On Wed, Jan 28, 2009 at 12:31 AM, Cosmin Stejerean wrote:
> On Tue, Jan 27, 2009 at 5:21 PM, Mark Volkmann
> wrote:
>>
>> > Yes, but it's specifically meant to be used as the first line of a
>> > file, to allow Clojure script to use unix "shebang" format.
>>
>> What should follow it? Something l
On Tue, Jan 27, 2009 at 9:34 PM, hank williams wrote:
>
> hmm... I'm confused. From the numbers in your example it looks like
> server has an advantage by a factor of about 2x. But in your text you
> say that the client version has an advantage with complicated code.
> What am I missing? Does one
On Jan 27, 10:08 am, Tom Ayerst wrote:
> I thought the validator just set "Agent has errors" and you have to check it
> explicitly.
Vars, refs and agents can have validators. A validator on a ref can
prevent the ref from taking on a new value by throwing an exception,
which will cause a roll-b
samppi -
Typical Swing programs create a window with all its components and
event handlers in the main thread, and then launch the event handling
thread implicitly by calling setVisible(true) on the window (usually a
JFrame). I've always done it this way, and have never had a problem.
However, t
On Tue, Jan 27, 2009 at 5:21 PM, Mark Volkmann wrote:
>
> > Yes, but it's specifically meant to be used as the first line of a
> > file, to allow Clojure script to use unix "shebang" format.
>
> What should follow it? Something like this?
> #!/Users/Mark/bin/clj
>
> That's the path to where my clj
On Tue, Jan 27, 2009 at 3:13 PM, Chouser wrote:
>
> On Tue, Jan 27, 2009 at 4:04 PM, Mark Volkmann
> wrote:
>>
>> I ran across two dispatch macros today that I haven't seen before.
>>
>> What does #= do? I see in LispReader.java that it uses an EvalReader
>> which is also defined in that source
> I read
> somewhere that I should do those things only in the "event dispatch
> thread", and that SwingUtilities.invokeLater(Runnable) would make that
> work. But I'm not sure if I get it yet; why would I need to do that?
The GUI runs in its own thread (the event thread). If you tried to
update
.Bill Smith a écrit :
> To take the extra Java class out of the loop, I wrote this second
> macro:
>
> user=> (defmacro s [& args] `(java.util.Arrays/asList (into-array (map
> str '~args
> #'user/s
> user=> (let [c "value of c"] (s "1" c))
> #
>
user=> (macroexpand-1 '(s "1" c))
(java.util.
hmm... I'm confused. From the numbers in your example it looks like
server has an advantage by a factor of about 2x. But in your text you
say that the client version has an advantage with complicated code.
What am I missing? Does one JVM have the advantage in one situation
and one in others?
Hank
I'm trying to write a helper macro for invoking a class's main.
Here's the macro:
(defmacro main [class & args]
#^{:doc "Invoke class's main with specified arguments, which are
automatically stringified"}
(if (= (count args) 0)
`(. ~class main (make-array String 0))
`(. ~class main (i
> Can anyone point me to simple examples of how concurrency works in
> Clojure? (Not just one-liners, but examples that actually modify
> values from multiple threads, and hopefully print out some helpful
> information?
Rich's ants example is really good:
http://clojure.googlegroups.com/web/ants
No need for an official release, if shell_out.clj becomes available in
SVN (and any dependencies)
that's fine with me.
I can check the differences with the version I have checked out a few
weeks ago and find the impacts.
I only use sql from contrib intensively in production and I can test
easily
On Tue, Jan 27, 2009 at 4:04 PM, Mark Volkmann
wrote:
>
> I ran across two dispatch macros today that I haven't seen before.
>
> What does #= do? I see in LispReader.java that it uses an EvalReader
> which is also defined in that source file, but it's not clear to me
> what it does.
It's used by
Hi Luc,
Are you suggesting a new release of contrib to catch the changes to
shell_out.clj, or something different?
Sorry if I am being obtuse. :-)
Stuart
> Hi Stuart,
>
> it might be a good idea to release shell_out.clj in the SVN
> repository of clojure-contrib.
>
> I have to deal with tw
Hi Stuart,
it might be a good idea to release shell_out.clj in the SVN repository
of clojure-contrib.
I have to deal with two versions of the jar file for clojure-contrib if
I want to use lancet and preserve what I have deployed right now.
My version of clojure is not too far behind yours.
Given
Hi,
Am 27.01.2009 um 21:57 schrieb wubbie:
Why defn ends with -(dash)?
(defn- mire-handle-client [in out]
defn- works exactly like defn, but creates a Var,
which is only visible in the defining namespace.
So when you :use the namespace this function
will not be exported to the other namespac
I ran across two dispatch macros today that I haven't seen before.
What does #= do? I see in LispReader.java that it uses an EvalReader
which is also defined in that source file, but it's not clear to me
what it does.
What does #! do? I see in LispReader.java that it uses a
CommentReader. Is it
Hi Phil,
Why defn ends with -(dash)?
(defn- mire-handle-client [in out]
On Jan 27, 1:16 pm, Phil Hagelberg wrote:
> Keith Bennett writes:
> > I'm trying to wrap my head around Clojure's concurrency. I'm new to
> > Lisp-like languages, and the examples that I've found are a bit
> > complex.
java -server is not the default on Macs. It makes a huge difference
for Clojure.
% java -jar clojure.jar
Clojure
user=> (time (reduce #(+ %1 %2 (if (odd? %1) -1 0)) (range 1000)))
"Elapsed time: 11793.18 msecs"
499001
% java -server -jar clojure.jar
Clojure
user=> (time (reduce #(+ %
Under a huge assumption that Google will soon announce a 'Java
compatible' runtime for AppEngine. Could Clojure work out of the
box? Would Clojure's dynamic generation of ASM/bytecode pose a
security problem for a generic sandboxed environment? If expected
conflicts exist, what kind of adaptati
Keith Bennett writes:
> I'm trying to wrap my head around Clojure's concurrency. I'm new to
> Lisp-like languages, and the examples that I've found are a bit
> complex.
>
> Can anyone point me to simple examples of how concurrency works in
> Clojure? (Not just one-liners, but examples that act
Indeed with Common Lisp format, it is a one liner:
(cl-format true "~{~{~3A ~...@a ~...@a ~A~%~}~}" lines)
produces:
-rw 13290 1216183460872 LispExample_Flow.png
-rw 3211 1217537516267 PDFReport.java
(nicely aligned in a fixed-width font)
CL format is available for Clojure at: http://g
I've put together two functions that handle this for me, and although
I haven't looked at recent changes to clojure.contrib.sql (which sound
interesting), perhaps there might be some interest in what I've got.
The first function takes a database connection and a SELECT statement,
returning a func
On Jan 27, 2009, at 16:28, cliffc wrote:
> I think TCO is very doable and likely to appear in some common JVMs at
> some point.
> Continuations, on the other hand, are likely to require a massive
> infrastructure overhaul.
TCO would already by a step forward: it would make continuation-
passing
Thanks for the response. Yeah, I used SwingWorker just for education's
sake. I'm just trying to figure out the best practices to do for
Clojure/Swing in the future. The last question was about something I
read on one of Sun's Swing tutorials--the text-sampler-gui function
calls a bunch of Swing co
samppi -
I don't suggest using SwingWorker for this unless you just want to
practice using it for education's sake. The calculation time is
effectively zero in an application like this where actions are user-
triggered, so using SwingWorker is a case of unnecessary and premature
optimization...a
Hi,
Is anyone aware of a pretty-print function for Clojure? I saw there
was some discussion about it on this thread a while ago, but I don't
seem to see anything related to pretty-print in either the core or
clojure-contrib. If no one's working on implementing it, I might take
a stab at it.
Than
On Tue, Jan 27, 2009 at 10:05 AM, Brian Doyle wrote:
>
> On Tue, Jan 27, 2009 at 7:43 AM, Chouser wrote:
>>
>> user=> (def expr (read (java.io.PushbackReader. (java.io.StringReader.
>> "(+ 1 2)"
>> user=> (first expr)
>> +
>> user=> (namespace (first expr))
>> nil
>
> This nil namespace seem
On Tue, Jan 27, 2009 at 9:20 AM, Daniel Jomphe wrote:
>
> Michael Wood wrote:
>
>> I've seen various code snippets where people use something# in
>> functions. Is there any point to this or gensym except in a macro?
The suffix# isn't made useful by being in a macro, but by being in a
syntax-quo
Hello everybody,
(comp) should evaluate the identity function, so comp behaves
consistent with other variadic functions and returns a neutral value
on the zero-argument-case. This is consistent with +, because (+ (+)
x) = x and (comp (comp) fun) = fun.
For similar rasons, (-> x) should evaluate t
I think TCO is very doable and likely to appear in some common JVMs at
some point.
Continuations, on the other hand, are likely to require a massive
infrastructure overhaul.
Cliff
On Jan 26, 4:38 am, Rich Hickey wrote:
> On Jan 26, 3:20 am, Konrad Hinsen wrote:
>
> > On 25.01.2009, at 21:33,
Please disregard this thread - I seem to have double posted
accidentally. The second post is at:
http://groups.google.com/group/clojure/browse_thread/thread/aa1532f2906ad8c1
On Jan 26, 11:56 pm, smanek wrote:
> Hello all,
>
> I'm a Common Lisp programmer who has just started learning Clojure. I
I thought the validator just set "Agent has errors" and you have to check it
explicitly.
Tom
2009/1/27 MikeM
>
>
> > Were watchers synchronous, they would have to run post-transaction
> > (else a watcher action failure could cause a transaction rollback,
> > leaving already notified watchers co
On Tue, Jan 27, 2009 at 7:43 AM, Chouser wrote:
>
> On Tue, Jan 27, 2009 at 8:51 AM, Mark Volkmann
> wrote:
> >
> > Are these statements correct? Actually, I know some are correct
> > because I just looked though the source. Hopefully others that haven't
> > will find this interesting.
> >
> > S
On Mon, Jan 26, 2009 at 11:13 PM, Whirlycott wrote:
>
> I'm new to Clojure and I'm wondering how I'm supposed to be thinking
> about various things. I want to use the c3p0 database connection pool
> in a Clojure app. In Java, I would simply create an instance of this
> class and either assign i
On Mon, Jan 26, 2009 at 8:19 PM, James Reeves
wrote:
>
> On Jan 27, 2:08 am, Mark Volkmann wrote:
>> Let's see if I've got this straight.
>>
>> (def foo 1) creates a Var in the default namespace with a value of 1.
>>
>> (create-ns 'com.ociweb.demo) ; creates a new namespace
>> (intern 'com.ociwe
On Tue, Jan 27, 2009 at 8:51 AM, Mark Volkmann
wrote:
>
> Are these statements correct? Actually, I know some are correct
> because I just looked though the source. Hopefully others that haven't
> will find this interesting.
>
> Symbol objects have a String name and a String namespace name, but n
Michael Wood wrote:
> > (defn with-test-report [test fn]
>
> You are shadowing clojure.core/fn here. Not a problem really, but
> perhaps it would be better to use a different name? Oh, and
> clojure.core/test.
Oh, right! Didn't think of it this way; it might be misleading to any
future reader
On Tue, Jan 27, 2009 at 3:04 AM, Keith Bennett wrote:
>
> All -
>
> I tried testing the code at http://clojure.org/Refs to see what the
> benefit of multicore processing would be. To my surprise, the my-pmap
> function took *more* time, not less, than the map function.
>
> Whereas the times list
Here is one way:
(let [dbc (make-db)]
(defn get-apples []
(.query dbc "select * from apples")))
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To post to this group, send email to clojure@go
Are these statements correct? Actually, I know some are correct
because I just looked though the source. Hopefully others that haven't
will find this interesting.
Symbol objects have a String name and a String namespace name, but no value.
Var objects have references to a Symbol object, a Namespa
> Were watchers synchronous, they would have to run post-transaction
> (else a watcher action failure could cause a transaction rollback,
> leaving already notified watchers confused). Being post-transaction
> would mean that the refs could have been changed by another
> transaction in the interi
Hello all,
I'm a Common Lisp programmer who has just started learning Clojure. I
saw it mentioned online that several members of the existing community
were looking for someone to build a datalog for Clojure: I was
wondering what exactly you had in mind?
Were you thinking of a faithful implement
Hello all,
I'm a Common Lisp programmer who has just started learning Clojure. I
saw it mentioned online that several members of the existing community
were looking for someone to build a datalog for Clojure: I was
wondering what exactly you had in mind?
Were you thinking of a faithful implement
I'm new to Clojure and I'm wondering how I'm supposed to be thinking
about various things. I want to use the c3p0 database connection pool
in a Clojure app. In Java, I would simply create an instance of this
class and either assign it to a static field or perhaps make it
available in a singleton
All -
I'm trying to wrap my head around Clojure's concurrency. I'm new to
Lisp-like languages, and the examples that I've found are a bit
complex.
Can anyone point me to simple examples of how concurrency works in
Clojure? (Not just one-liners, but examples that actually modify
values from mul
I'm new to Clojure and I'm wondering how I'm supposed to be thinking
about various things. I want to use the c3p0 database connection pool
in a Clojure app. In Java, I would simply create an instance of this
class and either assign it to a static field or perhaps make it
available in a singleton
All -
I tried testing the code at http://clojure.org/Refs to see what the
benefit of multicore processing would be. To my surprise, the my-pmap
function took *more* time, not less, than the map function.
Whereas the times listed in the article were approximately 3.1 and 1.7
seconds, on my MacBo
I keep needing to go to the last (rightmost) child of a loc (generally
after appending it).
(Or I failed to spot the proper idiom.)
So I wrote last-child:
(defn last-child [loc]
(last (take-while identity (iterate zip/right (zip/down loc)
but it feels a bit overkill because of all thi
On Tue, Jan 27, 2009 at 8:43 AM, bOR_ wrote:
>
> According to one of the posts beneath the log, the issue has been
> fixed in the latests svns. I have no clue what the technical problem
> was in clojure's source.
To my understanding, the technical problem was that Clojure used the
same ClassLoad
On Jan 27, 2009, at 7:48, Tzach wrote:
> I do not understand the benefit of storing the map-board result.
> The map-board function it self is using lazy for loop.
> Why isn't the laziness transitive automatically?
map-board is indeed lazy, but every time you call it it creates a
*new* lazy seq
bOR_ a écrit :
> (filter #(:born \...@%) world)
>
Did you mean:
(filter #(:born @%) world)
?
Christophe
--~--~-~--~~~---~--~~
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To post to this group, send email to cloju
On Mon, Jan 26, 2009 at 10:03 PM, Daniel Jomphe wrote:
>
> Perry Trolard wrote:
>
>> You can get the symbol that names the function from the Var's
>> metadata, like:
>>
>> user=> (:name (meta (var =)))
>> =
>
> Thank you Perry.
>
> What is (var ...)? I didn't find it in the api docs, nor in the V
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