On 27 July 2011 01:43, Mark Derricutt m...@talios.com wrote:
My unhappiness with it is more akin to my unhappiness with ANY language that
tries to target multiple VM platforms, and that's mostly due to the
-potential- to break the community.
It may be helpful to approach the issue with the
On Jun 16, 4:47 am, Alex Baranosky alexander.barano...@gmail.com
wrote:
IS it possible to use the regex reader macro # with generated code? What
I mean is do something like:
#${(join | (range 1 1))}
I'm using ${...} to mean string interpolation, though I know Clojure doesn't
have that
On May 23, 12:24 am, Aaron Bedra aaron.be...@gmail.com wrote:
Have you signed a CA yet? If so, you can sign up for a confluence account
and start a wiki page around this. This way the appropriate discussions and
review can take place and then possibly a JIRA ticket/patch to fix things
up.
On May 22, 10:53 pm, Laurent PETIT laurent.pe...@gmail.com wrote:
Your discussion has been slowly getting me into the mindstate that
I'll add this missing reindent whole file/current selection feature
in CCW, AH !
Or, perhaps into a separate library so we can use your reindenting
feature in
On Apr 26, 10:52 pm, Jonathan Fischer Friberg odysso...@gmail.com
wrote:
No, that isn't possible.http://clojure.org/refs
I disagree: In the example given, dereferencing happens outside the
dosync block, thus outside of any transaction, so a race where map1
and map2 change midway through the
On 23 March 2011 15:21, Jeffrey Schwab j...@schwabcenter.com wrote:
Not so. Windows commands of the form someProgram /some/path often mistake
/some/path for command-line switches (like Unix flags).
Yes, working around this issue is discussed in the Wikipedia article I
linked to.
I had
On 22 March 2011 05:47, Shantanu Kumar kumar.shant...@gmail.com wrote:
On Mar 22, 3:29 am, siyu798 siyu...@gmail.com wrote:
(dirname /a/b/c) should return /a/b/ on both win and unix
You can write such a function yourself. Irrespective of the platform,
Java works fine with '/' as a separator
On 21 March 2011 15:52, Jonathan Smith jonathansmith...@gmail.com wrote:
Here is a way that should work.
(let [missing (gensym)]
(defn get-with-exception [map key]
(let [res (get map key missing)]
(if (= res missing)
(throw (new Exception my-exception))
res
On Mar 20, 10:50 am, Andreas Kostler
andreas.koestler.le...@gmail.com wrote:
I would like to throw an exception when I'm trying to retrieve a value in a
map for a key that doesn't exist.
Another concise solution (thanks, Conj Labs):
(defn get-or-exc [map key]
(if-let [[_ v] (find map
On 20 March 2011 22:02, Andreas Kostler
andreas.koestler.le...@gmail.com wrote:
Would that be flow control though? I see this exception as a rather
exceptional circumstance for this application...
If a missing key signifies an error, then yes, it should probably
throw an exception. It seems
On Mar 9, 8:15 pm, jim jim.d...@gmail.com wrote:
So, my question is how many would be interested in such a session?
This would be a basic introduction to monads. Future session could be
about more advanced monad topics, if there was a demand for that.
I'd *love* to attend. Even with such a
On 5 March 2011 20:35, Timothy Washington twash...@gmail.com wrote:
I've actually been thinking about that. And from what I can tell, LISP DSLs
are simply extensions to the LISP language. But maybe I still haven't gotten
my head wrapped around 'defmacros' and how they implements DSLs. It seems
Hi msappler,
On Jan 12, 12:27 pm, msappler damnedmar...@web.de wrote:
No i do not mind.
A blog is being planned for promotion of my game and sharing.
Only have to find a domain name which i like.
Have you put anything in the meantime? I'd be very interested to read
about your game's progress
On 2 March 2011 09:32, Alan a...@malloys.org wrote:
'(apply + 1 1) would be how you create a list of those symbols.
('apply + 1 1) says call the function 'apply with the arguments of +
1 and 1.
Note that this will still break at runtime because Integers are not seqable. :-)
You probably want
On Feb 28, 9:31 pm, Seth wbu...@gmail.com wrote:
Or, if you dont feel like doing refer-clojure every time, you might be
interested in this:http://planet-clojure.org/page28.html
under Computing with Units and Dimension
Your link only gives me a 404, unfortunately, but Google's cached text-
only
On Feb 28, 3:34 pm, Zlaja zlatko.jo...@gmail.com wrote:
How I can achieve master worker pattern in clojure with agents.
For example I have components that write messages to a queue.
I would like to process messages parallel by agents. Is it posible?
This use case sounds like a job for Lamina:
On 27 February 2011 20:50, Mark markaddle...@gmail.com wrote:
I wrote that up quickly without thinking much about it. Yes, the
invocation is definitely a macro and not a function. Still, I think
it would be helpful to see the symbol's value and, if possible, the
macro's arity.
Is calling
On Feb 16, 6:20 am, Nick npatric...@gmail.com wrote:
(let [ newv1 (time (doall (map (fn [v u I] (+ ^java.lang.Double v (*
0.5 (+ (* (+ (* 0.04 ^java.lang.Double v) 5) ^java.lang.Double v) 140
(- ^java.lang.Double u) ^java.lang.Double I v u I)))
newv (time (doall (map (fn [v u I]
On Jan 22, 1:19 am, Mark Triggs mark.h.tri...@gmail.com wrote:
Daniel Werner daniel.d.wer...@googlemail.com writes:
After a few tries I've come up with the following algorithm to
transform :keys syntax into normal destructuring syntax, but am still
appalled by its complexity:
(let [vmap
On 10 February 2011 21:33, Fogus mefo...@gmail.com wrote:
Additionally, I've always hoped for separate
PreConditionAssertionError and PostConditionAssertionError types, but
keep forgetting to discuss it.
A while ago Stuart Sierra wrote about using typed assertions in unit
testing. One of his
On 10 February 2011 17:05, Jeff Rose ros...@gmail.com wrote:
Sorry for the reply spam, but I've just remembered another error
reporting issue: pre and post conditions. They are a great feature
and I'd like to use them more often, but the error messages they
produce are virtually useless in
Hi everyone,
let's play a round of golf. I am currently implementing associative
destructuring for ClojureJS while trying not to peek into clojure.core
too often -- which wouldn't make things much easier since the
'destructure fn is a huge beast.
After a few tries I've come up with the following
On 13 January 2011 15:52, Maurits maurits.r...@gmail.com wrote:
(defn all-protocols []
(filter #(protocol? @(val %)) (ns-publics *ns*)))
(defn implemented-protocols [sym]
(filter #(satisfies? @(val %) sym) (all-protocols)))
Of course, this will restrict your search to protocols in a given
On Jan 11, 4:20 pm, Ram Krishnan kriyat...@gmail.com wrote:
* Mozilla's JS 1.7 supports a let statement[1] with lexical scoping,
...
That's an interesting idea, although I'm not too keen on specializing
for any one browser. The other problem is I don't see any reasonable
way of providing
On Jan 11, 2:28 am, Tom Hall thattommyh...@gmail.com wrote:
I know I should not be naming my functions the same thing as ones in core
You can and should, as long as it makes your life easier and doesn't
get too confusing for readers. Just make sure you're able to access
the original core
Hi Ram,
your take on Clojure to JS translation seems very interesting to say
the least. Thanks for sharing your work.
A few points I tripped over while reading the example:
* Why are functions being defined as join = function (...) instead
of function join (...)? Does this make a semantic
On 4 January 2011 19:20, Jon Seltzer seltzer1...@gmail.com wrote:
Why not update the funding from simple donation to a purchase of
clojure/core software like a refined version of the eclipse plugin or
some other incentive based approach? I think I understand why rich
might find 'donation'
Hi Rich,
On 4 January 2011 06:31, Rich Hickey richhic...@gmail.com wrote:
I was going to continue the funding effort, but have decided against it for
the reasons given here:
Regarding the entitlement [...] as to what I do with my time, I
believe I know of one of the discussions that lead you
On 22 December 2010 23:22, Seth wbu...@gmail.com wrote:
ok, thats what i thought. Any change of a literal syntax for symbols
like in lisp, |symbol|??
There is no special reader syntax for weirdly named symbols, at least
as far as I am aware, but you can always use:
(symbol strange$name)
--
On 18 December 2010 10:41, nicolas.o...@gmail.com
nicolas.o...@gmail.com wrote:
Thank you very much for the explanations. I will go for Fork/join.
Anybody is working on a clojure wrapper?
Take a look at Clojure's par branch:
https://github.com/clojure/clojure/tree/par
It has proof-of-concept
On 18 December 2010 16:29, Ken Wesson kwess...@gmail.com wrote:
Once Java 7 is out is starting to seem like once LaTeX3 is out or
Oh, you haven't heard the news yet? LaTeX3 has already been superseded anyway:
http://river-valley.tv/tug-2010/an-earthshaking-announcement
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On Dec 10, 6:35 am, Alex Baranosky alexander.barano...@gmail.com
wrote:
Thanks, it is so hard to google symbols.
Use the search bar on ClojureDocs:
http://clojuredocs.org/
--
Daniel
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You received this message because you are subscribed to the Google
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To post to this
On 10 December 2010 22:08, Alex Baranosky alexander.barano...@gmail.com wrote:
I actually did use that search and a search of -? doesn't come find -?
The incremental search feature actually suggests -? while you're
still typing, and clicking on the suggestion will take you to the
correct docs
On Nov 30, 3:08 am, Sunil S Nandihalli sunil.nandiha...@gmail.com
wrote:
I didn't realize I could test it so easily. But I would like it to ideally
return the same collection .. Shouldn't be hard to write a wrapper .. But I
think it should be the default behaviour.
What benefit do you hope to
On 1 December 2010 02:01, Chris Riddoch riddo...@gmail.com wrote:
Which reminds me, I'd really love to see a good comparison of freely
available benchmarking tools for Clojure. From past discussions on
the list, I gather that benchmarking in the JVM is a rather tricky
thing in general, but
On Nov 26, 1:42 pm, Stefan Rohlfing stefan.rohlf...@gmail.com wrote:
Question 1:
(when (some identity maps)
This expression from the original implementation checks if the
provided coll is empty.
However, why not just use (when (empty? maps) or (when (seq maps)
instead?
Note also that (seq
On 26 November 2010 16:48, Laurent PETIT laurent.pe...@gmail.com wrote:
2010/11/26 Steven E. Harris s...@panix.com
Daniel Werner daniel.d.wer...@googlemail.com writes:
(some identity maps), on the other hand, checks whether there is any
non-empty map *in the coll of maps*.
By non-empty
On 24 November 2010 21:40, Mike Meyer
mwm-keyword-googlegroups.620...@mired.org wrote:
Could someone explain where this urge to write (- expr (func arg))
instead of (func expr arg) comes from?
I like to use - and - because they allow me to add more steps to
the pipeline as needed, without
I'd consider the following projects:
Compojure is written in an almost purely functional style and
demonstrates well how Clojure values can act almost as their own DSLs
while keeping the semantics clear and concise.
http://github.com/weavejester/compojure
Christophe's Regex lib shows how to use
On 9 September 2010 07:31, Meikel Brandmeyer m...@kotka.de wrote:
derive works with non-qualified keywords, but the contract disallows
that:
Apparently the contract given in the docstring is being enforced in
derive's 2-arg definition, but the must be namespaced parts of the
assertions are
On Sep 7, 9:00 am, Thomas thomas.g.kristen...@gmail.com wrote:
I've also been using my own version of a map-to-values function
extensively and it would be really nice to have something like that,
either in contrib or in core. It comes in handy surprisingly often.
+1
I find myself writing
On Sep 6, 4:43 pm, Meikel Brandmeyer m...@kotka.de wrote:
You can use qualified keywords with an hierarchy.
(def your-hierarchy
(- (make-hierarchy)
(derive ::hello ::anything)
(derive ::world ::anything)
(derive ::city ::anything)
(derive ::us ::anything)))
Building your
On Aug 22, 2:39 am, Legilimens bort...@gmail.com wrote:
Would people be interested in a patch that replaces all of the older
static calls using . to the newer method using / ?
I personally don't mind the leftovers of old syntax in core. However,
the question of why is it being used comes up
On 20 July 2010 11:50, Paul Richards paul.richa...@gmail.com wrote:
So back to my example:
(def forty-two 42)
(defn func [] (* forty-two forty-two))
(defn other-func [] (binding [forty-two 6] (func)))
func is impure, and other-func is pure. It's really nothing to do
with whether the
Hi Zack,
I just take a quick look at your site and must say that I'm impressed.
This is going to become one of the utilities I constantly keep open in
the background while developing. Especially since features like the
Var cross-referencing tend to make easier to get the big picture.
One thing I
On 25 June 2010 05:27, Ryan Senior senior.r...@gmail.com wrote:
(future-await fut2 2 :minutes) ; = done
Your implementation points into the right direction (again, IMHO). I'd
like to offer two suggestions:
1. Leave out the three-arg version of future-await. The time unit
conversion seems
Hello Ryan,
On Jun 21, 7:34 am, Ryan Senior senior.r...@gmail.com wrote:
1 - I think a good improvement would be updating the docs for the future
related functions to indicate what kind of objects are passed in and
returned. Users would then not have to go through the source to see what's
On Jun 22, 7:57 pm, Timothy Baldridge tbaldri...@gmail.com wrote:
system it uses. Has anyone tried marrying the two system systems to
create a truly persistent data primitive where any updates to a map
is written to the disk?
There has been an attempt at integrating STM transactions with DB
On Jun 11, 11:41 pm, Chris Kent cjk...@gmail.com wrote:
Is this what you're thinking of?
http://groups.google.com/group/clojure/browse_thread/thread/aa22a7095...
I'm not sure what happened, it sounded promising but I've not seen it
mentioned again since this thread went quiet.
This is
On Jun 10, 12:26 pm, Michael Jaaka michael.ja...@googlemail.com
wrote:
Is there any way to integrate database transaction with Clojure
transaction?
It would be nice if operations done in memory and on database would be
commited atomicly with the end of transaction scope in Clojure.
Such
Jonas,
Thanks for stepping forward and publishing your work. From the short
glance I had at it already, your code seems very low-level (probably
for performance), but sound. The only thing that, compared to other
CSV libraries I've used, I miss somewhat is explicit support for
dialects. While the
On May 30, 12:51 am, Eugen Dück eu...@dueck.org wrote:
How often do you do:
(+ 5)
or
(* 3)
? But you might have used something like
(apply + coll)
or
(reduce + coll)
and under certain circumstances your coll might have had only one
element.
This is a good line of reasoning. Let's add
On May 31, 10:07 pm, Daniel Werner daniel.d.wer...@googlemail.com
wrote:
quantitative logic
That should have been quantification logic.
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On May 26, 8:12 pm, Mohammad Khan beepl...@gmail.com wrote:
personally, I like strip or trim [rather] than chomp/chop.
+1 from a mostly-Python programmer :-)
On May 26, 8:15 pm, Mark Engelberg mark.engelb...@gmail.com wrote:
If you're developing a trio, like ltrim, trim, rtrim, wouldn't it be
On 20 May 2010 11:42, Anders Rune Jensen anders.rune.jen...@gmail.com wrote:
The algorithm:
(defn change-state [cur-state]
(when ( (:value cur-state) 10)
(assoc cur-state :message danger, danger)))
How I'd have to write it when using an agent:
(defn change-state [cur-state]
Having a web-based zero-deployment-effort REPL is pretty nifty,
especially for newcomers. Thanks Rayne/Heinz/etc.!
Already found a small bug: HTML entities are apparently quoted twice
and appear in the output.
Clojure blah
quot;blahquot;
Clojure filter
#lt;core$filter__5084
Hi Conrad,
thanks for putting this tutorial up. Casting SPELs was actually one
of the documents that inspired me to start learning Lisp, so I'm happy
to see it may help others get started with Clojure.
Adding to the corrections: The Addendum (page 8) seems to have
remained CL-centric
Hello Joshua,
I don't think there is an official standard in Clojure, at least not
yet. For a source of inspiration, you may be interested in this
thread, in case you haven't found it yourself yet:
http://groups.google.com/group/clojure-dev/browse_thread/thread/d090b5599909497c
Personally, I
On Feb 16, 2:12 am, Mike Meyer mwm-keyword-googlegroups.
620...@mired.org wrote:
Wouldn't be hard to do, either. Just bind *script-name* (or some such)
to the path in script-opt, and let the client decide if it's the same
as *file*.
It would indeed be helpful if clojure.main bound a Var to the
On Feb 11, 4:04 pm, Bryce fiat.mo...@gmail.com wrote:
I'm wondering what the rationale is for using multimethods vs. cond,
and where it's best to use either? Multimethods seem to be very
seldom used, usually to dispatch on type, but I can see advantages to
using data to dynamically define
On Feb 9, 2:37 am, Wardrop t...@tomwardrop.com wrote:
That seems like what I'm after, thanks. I assume this would be pretty
reliable across all platforms running the JVM.
In .NET, on the other hand, this value is stored in
System.Environment.ProcessorCount. Perhaps it would be worthwhile to
On Feb 4, 8:11 pm, Bryce fiat.mo...@gmail.com wrote:
I take your point; I've given up trying to actually define a function
with the expression for the moment (I'd imagine it's still possible,
just much trickier than I thought). My intention was to fake operator
overloading. For my purposes
On Jan 30, 8:09 am, Timothy Pratley timothyprat...@gmail.com wrote:
Below I present 'submit-future' which is similar to the existing
'future' call in that it spawns a thread to execute a task, but
differs in that it will block if n submitted futures are already
running, where n is the number
On Jan 30, 7:07 am, free_variation cane.c...@gmail.com wrote:
(defn init-features [stream]
(let [feature-stream (ref stream)]
(dosync (ref-set feature-stream stream))
The call to ref-set seems redundant here since you already initialize
the ref with stream as its value.
([m ks not-found]
(if-let [v (reduce get m ks)]
v
not-found)))
If I understand this arity version of get-in correctly, won't the
default also be used if the value stored in the nested data structure
evaluates to something false-y?
Anyway, thanks for creating the patches!
--
You
On Dec 23, 6:04 am, Nicolas Buduroi nbudu...@gmail.com wrote:
Hi, today I needed to use the map function on multiple collections
which didn't had all the same length. In this case, it returns a
sequence of the size of smallest one. But the problem I was facing was
required to map until the end
On Dec 13, 5:24 am, ajay gopalakrishnan ajgop...@gmail.com wrote:
It tried the following in REPL and got no error. Personally, I feel that I
should get an error because calling square on strings is wrong in both
cases.
Is there a way out of this in Clojure?
I hope you don't mind me bumping
On Dec 24, 7:08 am, Mike Douglas mike.doug...@gmail.com wrote:
Previously:
Caused by: java.lang.Exception: Assert failed: (= % x)
With your patch, assert does not include x in its message anymore in
case s is not given. Also, as a non-native speaker I find the phrase
failed when somewhat
On Dec 18, 8:07 pm, Martin Coxall pseudo.m...@me.com wrote:
I had this thought at work, when I should have been working, so please bear
with me if it's nonsense.
One of the things that always puts people off of Lisp, as we all know, are
the parentheses. Now, many ways have been suggested of
On Dec 10, 3:10 pm, Rich Hickey richhic...@gmail.com wrote:
I'm happy to announce I have implemented this fine-grained locals
clearing in the compiler, in the 'new' branch.
Is there a chance for this feature to find its way into master before
Clojure 1.1 is released?
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You received this
On Dec 1, 5:20 pm, Luc Préfontaine lprefonta...@softaddicts.ca
wrote:
http://www.infoq.com/news/2009/01/clojure_production
Slightly off-topic:
What prompted you to choose ActiveMQ over other popular message bus
systems like RabbitMQ? Was it the ease of operability with Clojure/
Java, or are
(doc some) says:
... this will return true if :fred is in the sequence, otherwise nil:
(some #{:fred} coll)
However, some returns the matching value instead:
= (some #{:fred} [:foo :fred :ethel])
:fred
Attached patch fixes the docstring. (Not that applying the patch would
be any easier than
On Nov 2, 4:07 pm, Miron Brezuleanu mbr...@gmail.com wrote:
On Mon, Nov 2, 2009 at 4:30 PM, dmiller dmiller2...@gmail.com wrote:
For ref out parameters, the problem is that let bindings and fn
parameters are not variables. You can't change the values they are
bound to. ref and out
On Oct 29, 9:35 pm, AndrewC. mr.bl...@gmail.com wrote:
Here's a macro that generalizes the two 'threading' macros - and -.
There have been multiple discussions on this group where similar
operators have been proposed, with some implementations very closely
matching this one. If the demand is so
On Oct 19, 5:03 pm, artg artgittle...@gmail.com wrote:
I'm using Programming Clojure in a grad course and doing a short
Clojure unit in a senior programming languages course at Calif State
Univ Long Beach.
Art, what kind of pre-existing knowledge do you expect or require in
your students? In
On Oct 11, 6:02 am, samppi rbysam...@gmail.com wrote:
Oops, you're right; I was thinking about something else. And I have
another mistake in my function too—I meant:
(defn transform-map [f a-map]
(into {} (map #(vector (key %) (f (val %))) a-map)))
It's unfortunate that it's not in
On Sep 24, 10:14 am, Miron Brezuleanu mbr...@gmail.com wrote:
about). The degree of typing can be varied (i.e. a person is any map
with a :name key, or any map with only a :name key, or any map with a
:name key which is nil or string etc.)
You may be interested in Konrad Hinsen's (algebraic)
On Sep 23, 6:20 pm, Emeka emekami...@gmail.com wrote:
Hello All,
I would like to have a transcript of Repl. Could someone help me out here?
Regards,
Emeka
If you use rlwrap, you can give it the --log-file (-l) argument:
$ rlwrap -l repl.log java -cp ...
On Sep 18, 2:08 pm, demet8 dem...@gmail.com wrote:
Im new to Clojure. Are there any development frameworks for clojure
worth noting yet?
There is quite a range of frameworks available already, covering
topics such as web development, database persistence, MapReduce and
computer algebra. Try
David,
could you please post a version of your solution[1] annotated with
some comments on where you used which kind of optimization, and why?
Your code looks very clean to me, and with some additional
explanations I think this could become a good example on how to
optimize computation-heavy
On Aug 7, 8:40 pm, Vagif Verdi vagif.ve...@gmail.com wrote:
I'd suggest to include into library for teaching purposes variants of
unoptimized functions with a suffix -naive. Say reduction-naive.
This way you could have both beautiful algorithm for teaching
purposes, and optimized function for
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