Dear Michal,
You and others explain me how Clojure (or Common Lisp) handles my
code. Very detailed and thoroughly. I want to draw attention to
another point:
The documentation says that the macro function is called with the
arguments unevaluated. So I write code for that function on that
How about while?
(while not-finished
(do stuff ...))
On Wed, Sep 28, 2011 at 4:23 AM, Nathan Sorenson n...@sfu.ca wrote:
Quite often I convince myself I need state or some effectful trigger, but
further thought reveals a simpler stateless approach.
That being said--if you absolutely need
On Wed, Sep 28, 2011 at 2:27 PM, ru soro...@oogis.ru wrote:
The documentation says that the macro function is called with the
arguments unevaluated. So I write code for that function on that
assumption. And when I run this code the arguments being evaluated. It
does not matter why or how and
If the macro arguments are evaluated, the macro does not need to
expand the language. All you can do with functions:
(eval-some-code '(.. some code here ..))
Even VisualBasic can do this: eval_some_code .. some code here ..
On 28 сен, 12:57, ru soro...@oogis.ru wrote:
Dear Michal,
You and
On Wed, Sep 28, 2011 at 2:39 PM, ru soro...@oogis.ru wrote:
If the macro arguments are evaluated, the macro does not need to
expand the language. All you can do with functions:
(eval-some-code '(.. some code here ..))
Even VisualBasic can do this: eval_some_code .. some code here ..
Try
You know, in many Lisps let is a macro too. In Clojure it expands to
the special form let* (an implementation detail); a Scheme
implementation might implement it as ((lambda (binding-symbol ...)
expr . exprs) binding-val ...).
Now, would you expect the following to return (inc x) -- a list of two
Baishampayan!
Thank you very much!
Your explanation is best. At last I understand my gap in understanding
of the situation.
Sincerely,
Ru
On 28 сен, 13:06, Baishampayan Ghose b.gh...@gmail.com wrote:
On Wed, Sep 28, 2011 at 2:27 PM, ru soro...@oogis.ru wrote:
The documentation says that
2011/9/28 ru soro...@oogis.ru:
Thank you very much!
Your explanation is best. At last I understand my gap in understanding
of the situation.
Extremely happy to to have helped you, Ru. Please don't hesitate to
email us if you have more questions.
Regards,
BG
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b.ghose at
On 28 сен, 13:13, Michał Marczyk michal.marc...@gmail.com wrote:
You know, in many Lisps let is a macro too. In Clojure it expands to
the special form let* (an implementation detail); a Scheme
implementation might implement it as ((lambda (binding-symbol ...)
expr . exprs) binding-val ...).
On Sep 28, 2011, at 1:26 AM, Sean Corfield wrote:
On Wed, Sep 28, 2011 at 12:03 AM, Arthur Edelstein
arthuredelst...@gmail.com wrote:
You may think
I'm doing it wrong, but I don't think I'm alone at all.
I don't think you're doing anything wrong - and I'm sure many people
only do minimal
On Wed, Sep 28, 2011 at 5:00 PM, Gary Poster gary.pos...@gmail.com wrote:
Perhaps Java has been different, but the languages I use and follow have not,
with the exception of JavaScript. I perceive it to be a mildly unfortunate
fact of life at this point.
JavaScript's case might seem
I was reading the implementation of juxt and noticed it is defined
with 4 arities:
https://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L2296
Am I right to infer this is for performance reasons?
Where can I read more about the performance implications of arity and
this sort of
Specific arities means dispatch on arity can happen at the full speed of the
host w/o incurring the overhead of variable arity support. This issue
applies to ClojureScript as well where functions are not backed by classes.
David
On Wed, Sep 28, 2011 at 8:55 AM, Christian Romney xmlb...@gmail.com
On Sep 28, 1:30 pm, Gary Poster gary.pos...@gmail.com wrote:
On Sep 28, 2011, at 1:26 AM, Sean Corfield wrote:
Perhaps Java has been different, but the languages I use and follow have not,
with the exception of JavaScript. I perceive it to be a mildly unfortunate
fact of life at this
I agree with Nicolas, clojure should, at this point, focus on improving the
language instead of maintain compatibility, and as most features of other
languages can be implemented as macros I think clojure is ahead of the
competition.
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Depending on the project (and I don't know if it's still supported in
1.3), you ought to be able to leverage Mathematica Player with
Clojuratica for more powerful operations.
On Sep 27, 6:43 pm, Lee Spector lspec...@hampshire.edu wrote:
On Sep 27, 2011, at 5:44 PM, David Powell wrote:
I see
Do you know any lib for making diff from nested structures?
(diff [ 1 2 3 { 2 3 4 [ 1 2 { 1 2 3 4} ] } #{ 4 5 } ] [ 1 3 { 2 3 4 [ 1 4 {
2 2 3 5} ] } #{ 4 5 } ] )
- [ 2 { [ 2 { 1 2 3 4 } ] } ]
as you can see it behaves like clojure.set/difference
and better if you would point the keys in map
On Wed, Sep 28, 2011 at 7:29 PM, Michael Jaaka
michael.ja...@googlemail.com wrote:
Do you know any lib for making diff from nested structures?
(diff [ 1 2 3 { 2 3 4 [ 1 2 { 1 2 3 4} ] } #{ 4 5 } ] [ 1 3 { 2 3 4 [ 1 4 {
2 2 3 5} ] } #{ 4 5 } ] )
- [ 2 { [ 2 { 1 2 3 4 } ] } ]
as you can see it
Odyssomay,
While does not work in this case as ctx will be updated on each
iteration and fed to the next iteration.
Thanks,
siyu
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Hi,
there is ye olde loop/recur, which handles side effects (and this case in
particular) quite nicely. The only advantage of iterate is that the sequence
of intermediate values is available to an outside observer. However, as
stated before: mixing lazy sequences with side effects is asking
Ah, figured it out. First, its important to use the debugging tools in
chrome when working on javascript (Shift+Ctrl+I). This gave me the
error I needed to figure what was going wrong. The problem was I
needed the goog.addDependency line. Now it knows where to find it and
doesn't cause an error.
@David Nolen,
All the files are there in the script tab.
autogen'd file out/F6baq.js:
goog.provide('hello');
goog.require('cljs.core');
hello.greet = (function greet(){
return hello world;
});
goog.exportSymbol('hello.greet', hello.greet);
hello.js:
goog.addDependency(../cljs/core.js,
Does it work when you use the advanced compilation settings?
On Wed, Sep 28, 2011 at 12:35 PM, Brent Millare brent.mill...@gmail.comwrote:
@David Nolen,
All the files are there in the script tab.
autogen'd file out/F6baq.js:
goog.provide('hello');
goog.require('cljs.core');
hello.greet =
No, I get a similar error, but instead of hello not being defined,
it says b is not defined.
On Sep 28, 12:55 pm, David Nolen dnolen.li...@gmail.com wrote:
Does it work when you use the advanced compilation settings?
On Wed, Sep 28, 2011 at 12:35 PM, Brent Millare
Did you try this wIthout a single element namespace?
On Wednesday, September 28, 2011, Brent Millare brent.mill...@gmail.com
wrote:
No, I get a similar error, but instead of hello not being defined,
it says b is not defined.
On Sep 28, 12:55 pm, David Nolen dnolen.li...@gmail.com wrote:
Does
I've been working on problems from Programming Challenges (Skiena)
to learn clojure. As part of a problem I developed the following
routine. I sort of scare myself how natural thinking in reduce is
getting, but I was wondering if there is a more clever/idiomatic way
to solve this problem.
(defn
Hi David,
I'm not sure what you mean by this.
If I replace hello.greet() with greet(), I get greet is not defined
instead.
On Sep 28, 2:03 pm, David Nolen dnolen.li...@gmail.com wrote:
Did you try this wIthout a single element namespace?
On Wednesday, September 28, 2011, Brent Millare
Change you project layout to something like this:
src/hello/core.cljs
And put the code currently in hello.cljs in core.cljs
Make the other relevant changes to account for this restructuring.
Whenever I encounter issues like the one you're experiencing I try to
compare against the working
G'day.
I have problem that I have been thrashing back and forth over the best
design of for a week now, and I can't work out the nicest way to
handle it. Specifically, I have a collection of functions that return
a primary result, and might also return a secondary annotation about
that result.
Thanks everyone.
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On Wed Sep 28 18:52 2011, Daniel Pittman wrote:
G'day.
I have problem that I have been thrashing back and forth over the best
design of for a week now, and I can't work out the nicest way to
handle it. Specifically, I have a collection of functions that return
a primary result, and might
Hi,
you can return always a vector.
(fn [] [true])
(fn [] [true {:foo 12}])
And then use destructuring on the return value.
(let [[value annotations] (...)]
(when annotations
..))
Sincerely
Meikel
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The Bay Area Clojure User Group is scheduled to meet on Thursday
October 6th. Any out of town Clojurians who would be around for that
meetup and might be persuaded to come and talk about what they're
doing with Clojure?
http://www.meetup.com/The-Bay-Area-Clojure-User-Group/
Sean
On Tue, Sep 27,
If you were feeling so inclined, you could structure this as a lazy sequence
(like 'partition' does)
(defn lazy-break
[coll]
(letfn [(break-paired [pairs]
(lazy-seq
(when-let [s (seq pairs)]
(let [p (doall (take-while (fn [[a b]] (= (inc a) b)) pairs))
If I create a future but do not hold on to it anywhere and never dereference
it, is the thread guaranteed to run until successful completion?
In other words, if I create futures entirely for side effects, should I
worry about them getting terminated and GCd?
I looked for an answer but could
It won't get GC until it finishes running unless the thread throws an unhandled
Exception or the application is terminated.
Matt Hoyt
From: Jan Rychter jrych...@gmail.com
To: clojure@googlegroups.com
Sent: Wednesday, September 28, 2011 3:38 PM
Subject: Are
The future object itself is garbage collected but the thread is not, so you
should be ok.
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I wrote a generalized version of this called partition-between, which
you can see at
https://github.com/flatland/useful/blob/develop/src/useful/seq.clj#L181
if you're interested. Using that as a primitive, your break-on-gaps
function is simple:
user (partition-between (fn [[a b]] (not= a (dec
I'm using futures for queuing jobs to stress test a server, multiple
processess,each reciving and futuring job. Works as expected for many
days with no problems in cpu and mem usage... Clojure rox.
On 28 Wrz, 22:48, Mark markaddle...@gmail.com wrote:
The future object itself is garbage
While trying out clj-webdriver (for testing web pages), I got the impulse to
reduce some of my boilerplate. I'd like your advice on best practices.
Here's the original code.
(deftest test-login
(let [b (start :firefox https://github.com;)]
(try
(implicit-wait b 6)
(- b
Hi guys,
I'd love to meet with fellow clojurians at QCon SF. How many of you will
be there?
cheers!
Demetrius
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Hi Sean,
Intrigued by your statement that:
On Wed, Sep 28, 2011 at 3:17 AM, Sean Corfield seancorfi...@gmail.comwrote:
[...] We've converted all of our profile publishing and searching code to
Clojure
now (from Scala and CFML respectively) and we're liking the initial
results we're seeing
Will there be any slides or maybe even a recording of this session?
I would be very interested in this talk, but I can't go there...
Regards,
Boris
2011/9/27 Dennis shr3ks...@gmail.com:
Hey guys,
I will be giving a talk at JavaOne (it is Clojure related). Here is
the information.
Dear Clojurians,
I picked up Clojure a few months ago and find it hugely fascinating.
I've been working mainly with Java for the past few years and now
trying to overcome the un-learning curve in regards to polymorphism
and solving it with records protocols instead.
My aim is to port my library
Hello everybody,
can somebody help me figure out what I should add to my project.clj to use
https://github.com/clojure/data.priority-map
I am using clojure 1.3.
Thanks,
Sunil.
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after I posted the question .. I found this
discussionhttp://groups.google.com/group/clojure-dev/browse_thread/thread/de04e7d6c1a8cfa4?pli=1
.
So, I guess it is not ready for prime-time yet .. (may be I am wrong)
Thanks,
Sunil.
On Thu, Sep 29, 2011 at 3:34 AM, Sunil S Nandihalli
On Tue, Sep 27, 2011 at 9:21 PM, Sidharth Kshatriya
sid.kshatr...@gmail.com wrote:
Can you tell me why Clojure scored over Scala for you.
For my Scala / Clojure anecdote, see:
http://groups.google.com/group/clojure/browse_thread/thread/b18f9006c068f0a0/
We like CFML for View templating and
the browser bit should really use with-open
(with-open [browser (create-browser :firefox)]
On Wed, Sep 28, 2011 at 4:32 PM, Andrew ache...@gmail.com wrote:
While trying out clj-webdriver (for testing web pages), I got the impulse to
reduce some of my boilerplate. I'd like your advice on best
I am not sure to what extent there will be recording. However, I can
send you my slides after the presentation.
-- Dennis
On Wed, Sep 28, 2011 at 12:47 AM, Boris Mühmer
boris.mueh...@googlemail.com wrote:
Will there be any slides or maybe even a recording of this session?
I would be very
I see it here:
https://oss.sonatype.org/content/groups/public/org/clojure/
so based on the version number here:
https://oss.sonatype.org/content/groups/public/org/clojure/data.priority-map/
I assume it can be added to one's project with a version number of
0.0.1-SNAPSHOT
I'm still trying to
No builds have yet been released to Maven.
You can, however, use the snapshot from Sonatype. Add the following to
project.clj:
:repositories {sonatype-oss-public
https://oss.sonatype.org/content/groups/public/}
That causes Leiningen to search the Sonatype repository.
Then add this
I think that clojure/core team is doing its best to ensure backward
compatibility and break it only when there are prevalent reasons to do
it.
So what's the plan for the future? Are there plans to make clojure
stable at some point so that backward compatibility can be expected?
Otherwise I am
While trying out clj-webdriver (for testing web pages), I got the impulse to
reduce some of my boilerplate. I'd like your advice on best practices.
I would start with the main test macro, web-test. I would replace your
local variable b with a dynamically bound var *browser* that web-test
is
Improve as much as possible , performances and memory management !!
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On Sep 28, 2011, at 7:20 PM, Arthur Edelstein wrote:
So what's the plan for the future? Are there plans to make clojure
stable at some point so that backward compatibility can be expected?
Otherwise I am going to have difficulty continuing to advocate clojure
to my colleagues. In other words,
I am learning Clojure and have installed Clojure 1.2.0 in an Ubuntu 11
box.
While playing with the map function I ran into some behavior I don't
understand.
I tried to use map to change a list of strings into a list of vectors
of strings, something like:
(A B C) = ( [ A] [B] [C])
Inlining the
There is no convenient way to inherit functionality. But there are a couple
other routes, perhaps one of these will appeal to you -
* Just use your rich Java library from Clojure, perhaps providing a high
performance integration the same way that Clojure does via RT.java and
inlining
* Use macros
#([ % ]) is like:
(defn wrap [ x ] ([ x ]) )
not
(defn wrap [ x ] [ x ] )
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Thank you! Obvious once someone explains it :)
On Sep 28, 6:13 pm, Mark Engelberg mark.engelb...@gmail.com wrote:
#([ % ]) is like:
(defn wrap [ x ] ([ x ]) )
not
(defn wrap [ x ] [ x ] )
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On Wed, Sep 28, 2011 at 6:32 PM, Cluj alex.sant...@gmail.com wrote:
Thank you! Obvious once someone explains it :)
You could also do: (map vector '(A B C))
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Railo
I installed clojure from Programming Clojure page 12.
I try to run snake.clj.
This is what I get
What causes this??
Thanks
==
C:\clojure-1.3.0java -jar c:/clojure-1.3.0/clojure-1.3.0.jar
c:/clojure-1.2.1/e
xamples/snake.clj
Exception in
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