On Aug 30, 6:55 pm, ztellman wrote:
> On Aug 30, 4:40 pm, Elliott Slaughter
> wrote:
> > Have you thought about OpenGL ES at all? I don't know the state of ES
> > in Java, but it would be really cool if I could use one Clojure
> > library to target both desktop and embedded systems.
>
> > Thanks
On Sun, Aug 30, 2009 at 1:02 PM, Ivan Chernetsky
wrote:
> 2009/8/30 J. McConnell :
>
> > What versions of Clojure and Clojure-Contrib are you using?
>
> The freshest ones.
This appears to be the problem. If I use the HEAD version of Clojure, I get
the same error and it goes away if I use the -li
On Aug 30, 4:40 pm, Elliott Slaughter
wrote:
> On Aug 30, 12:20 am, ztellman wrote:
>
> > You may have already seen this and decided Cloggle was a bit more to
> > your liking, but I'm also working on a JOGL wrapper called Penumbra
>
> No, I hadn't actually seen this. My main reason for building
I was not sure from the documentation if conj, seq, etc are generic
functions (multimetiod functions). Is there any easy way to define
these for a new type?
Thanks!
Jonathan
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On Aug 30, 12:20 am, ztellman wrote:
> You may have already seen this and decided Cloggle was a bit more to
> your liking, but I'm also working on a JOGL wrapper called Penumbra
No, I hadn't actually seen this. My main reason for building on
Cloggle was that it was the only lib I was aware of; i
According to the code you need to implement an IPersistentCollection
and Seqable
You can browse or download the code:
http://github.com/richhickey/clojure/tree/master
look in src/clj/clojure/core.clj
for the definition of conj etc, which you can see call methods on
RT.java which is in
src/jvm/cloj
I was not sure from the documentation if conj, seq, etc are generic
functions (multimetiod functions). Is there any easy way to defines
these for a new type?
Thanks!
Jonathan
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
I was not sure from the documentation if conj, seq, etc are generic
functions (multimetiod functions). Is there any easy way to define
these for a new type?
Thanks!
Jonathan
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
G
On Sun, Aug 30, 2009 at 12:32 PM, CuppoJava wrote:
>
> Your examples are very good I think. It always helps to have a
> straight-forward conversion from one language to another for
> beginners. They will eventually pick up idioms and methodology by
> playing around.
>
> One comparison that bothers
The reason is the Filesystem. The OS caches data that was read from
disk in memory, so if you read the same file over and over again it is
read from disk the first time every following time it takes it out of
the memory.
That means only the first result gives you the actual time it takes to
acces
On Sun, Aug 30, 2009 at 4:14 PM, kyle smith wrote:
>
> I wrote this based on assoc-in. If anyone thinks this should be in
> core or contrib, feel free to use it.
>
> (defn assoc-in-by
> "'Updates' a value in a nested associative structure, where ks is a
> sequence of keys and (f v) is the new
On Sun, Aug 30, 2009 at 10:40 AM, Jason Baker wrote:
>
> I've written a test that does this:
>
>public void ReadFile(TextReader infile)
>{
>using (var text_reader = new PushbackTextReader(infile)) {
>LispReader.read(text_reader, false, null, true);
>
On Sun, Aug 30, 2009 at 7:57 AM, Jan Rychter wrote:
>
> Tassilo Horn writes:
> [...]
> > BTW: What's the reason that Clojure is licensed under the EPL and the
> > contrib stuff under CPL? Since clojure is not really eclipse-related, I
> > don't see a good rationale. IMHO, the Lesser GPL would
2009/8/30 J. McConnell :
> Hmmm ... This builds fine for me (with the inclusion of
> edn.main in the element). I've
> uploaded what I have here so you can try it on your machine:
I have just pasted this too.
> http://github.com/jmcconnell/test-clojure-ant-project/tree/master
It seems to be id
There are two styles of expression in higher level languages
(including Python and Clojure). Functional programming (map, filter,
reduce, fold) on one side and set (and list) comprehensions on the
other. This is somewhat a matter of culture, not capability. Although
slightly less convenient, funct
On Aug 30, 3:24 am, Dan Fichter wrote:
> [...]
> Take a dictionary of defaults and a user-supplied dictionary and return a
> new dictionary that combines them, with the user's entries winning when both
> dictionaries have the same key.
>
> [Clojure]
>
> (defn foo [defaults user]
> (merge defaul
haha, the api page strikes again! I figured something so basic would
have to be included, but I obviously didn't see update-in. It would
be nice to have a list of related functions that do not follow the
standard nomenclature. Will the upcoming documentation push address
this?
--~--~-~-
Hi,
Am 30.08.2009 um 22:14 schrieb kyle smith:
user> (assoc-in-by {:1 1 :2 {:3 3}} [:2 :3] inc)
{:1 1, :2 {:3 4}}
Doesn't this sound like update-in?
1:1 user=> (update-in {:a 1 :b {:c 3}} [:b :c] inc)
{:a 1, :b {:c 4}}
Sincerely
Meikel
smime.p7s
Description: S/MIME cryptographic signatur
I wrote this based on assoc-in. If anyone thinks this should be in
core or contrib, feel free to use it.
(defn assoc-in-by
"'Updates' a value in a nested associative structure, where ks is a
sequence of keys and (f v) is the new value and returns a new nested
structure.
If any levels do no
Using a variant of your code, I got results like this:
ReadFile: 516 msecs
ReadFile: 75 msecs
ReadFile: 76 msecs
ReadFile: 75 msecs
...
-David
Profiling shows the bulk of the time on the first iteration being
taken up by the JIT-compiler. On subsequent iterations, either
String.Intern or Pushb
Cool, I guess that there is no "one" correct answer but more a
question of style & experience,
the separation of logic & code mangling into two parts makes the most
sense to me.
Ill continue to sharp my macro foo ;)
On Aug 30, 8:16 pm, Vagif Verdi wrote:
> I would argue that macros always shou
I think we'd all agree that STM is a very important feature of
Clojure. I trust that it works as advertised, but until recently I
didn't feel that I understood exactly how it worked. This left me
unable to defend it when pressed by developers that aren't using
Clojure. I wanted to change that, for
I would argue that macros always should be syntax wrappers for
functions. Coding the logic into a macro in most cases is a mistake.
So first write the function that does the work. Then write a macro
that simplifies a syntax to call that function.
--~--~-~--~~~---~--~--
Your examples are very good I think. It always helps to have a
straight-forward conversion from one language to another for
beginners. They will eventually pick up idioms and methodology by
playing around.
One comparison that bothers me though is this:
(not= (new Exception) (new Exception))
Agai
2009/8/30 Dan Fichter :
[...]
> [Clojure]
>
> (println "Hello, world")
>
> [Python]
>
> print "Hello, world"
Or Python 3.x:
print("Hello, world")
> A list (in Clojure, a vector) of three integers.
>
> [Clojure]
>
> [1 2 3]
This can also be written in Clojure as [1, 2, 3]. Commas are
considere
On Aug 29, 3:48 pm, ronen wrote:
> In a lot of cases its seems that macros are used even when a function
> can do the same task,
> Macros seems to be less readable than their functional counterparts &
> more complex to write (to me at least).
>
> Its clear that there are special cases in which
Angel,
(note the space between & and v) --> no clojure here... it's English... :-)
>
> If you write &v (without space) it's just another identifier &v.
You are pretty right. However, for your case to hold that &v is another
identifier, just try it out.
Regards,
Emeka
--~--~-~--~~-
On Sun, Aug 30, 2009 at 10:15 AM, Ivan Chernetsky wrote:
>
> Either of clojure/core.clj and clojure/core__init.class is on
> classpath, I think. What am I doing wrong?
>
Hmmm ... This builds fine for me (with the inclusion of
edn.main in the element). I've
uploaded what I have here so you can t
Hello!
I wrote build.xml with the following content:
And I have a simple directory structure:
# find .
./build.xml
./src
./src/edn
./sr
I guess you want to write:
(defn foo [& v] (apply + v))
(note the space between & and v) --> no clojure here... it's English... :-)
If you write &v (without space) it's just another identifier &v.
Angel "Java" Lopez
http://www.ajlopez.com
http://twitter.com/ajlopez
On Sun, Aug 30, 2009 at 10:
On Aug 29, 2009, at 7:41 PM, Rich Hickey wrote:
> Since multimethods (are supposed to) cache their lookup *results*
> (i.e. they shouldn't lookup over and over), I wouldn't expect this to
> yield any improvement in a stable system with reused call paths. Are
> you calling isa? yourself? Can you
> For example, consider these two snippets:
>
> [Clojure]
> (if x
> (foo y)
> (bar y))
>
> [Python]
> if x:
> foo(y)
> else:
> bar(y)
>
Yeah, but then, in plain old Java:
if x {
foo(y);
} else {
bar(y);
}
which is not that different at all. The point is that these trivial
micro-sni
I've written a test that does this:
public void ReadFile(TextReader infile)
{
using (var text_reader = new PushbackTextReader(infile)) {
LispReader.read(text_reader, false, null, true);
}
}
...in a loop. I'm running this operation
Dan Fichter napisał(a):
> I'd like to convince some Python developers that Clojure is not foreign and
> does many things better than Python. I'd appreciate whatever suggestions
> you have about what I've written.
[...]
> Check whether every object in the collection x can be called like a
> fu
Hi Elliot,
I've written a small game using Clojure and LWJGL, and I've run into
the exact same issue (balancing between mutability and immutability)
when I was working on it. The three approaches I tried were:
The world is 1 ref containing the state of the game. Everything else
is immutable.
Spr
On Sun, Aug 30, 2009 at 8:09 AM, Emeka wrote:
> Hello All,
>
> I was fooling around with clojure and I found something I have not noticed
> before. Could someone explain it ?
>
> (defn foo [ &v]
> (apply + &v))
>
> Is '&' + the identifier's name another where of making sure that the
> parameter mu
On Aug 30, 2:24 am, Dan Fichter wrote:
> The Clojure version is more concise and radically safer but a little more
> conceptually packed. Is it worth your trouble?
Being primarily a Python programmer, I can say that the first thing my
co-workers would say is that Clojure isn't as readable as Py
Hello All,
I was fooling around with clojure and I found something I have not noticed
before. Could someone explain it ?
(defn foo [ &v]
(apply + &v))
Is '&' + the identifier's name another where of making sure that the
parameter must be a collection?
Or is there something I am doing wrong here?
On Aug 30, 2009, at 3:24 AM, Dan Fichter wrote:
> I'd like to convince some Python developers that Clojure is not
> foreign and does many things better than Python. I'd appreciate
> whatever suggestions you have about what I've written.
>
> Though I am crazy about STM and Clojure agents, I
Thanks, I was about asking for help.
Regards,
Emeka
On Sat, Aug 29, 2009 at 6:54 PM, Rich Hickey wrote:
>
> While the "Search this group" interface seems increasingly anemic, and
> time-limited in its results, you can get an effective search on the
> group archives using the advanced search:
>
Tassilo Horn writes:
[...]
> BTW: What's the reason that Clojure is licensed under the EPL and the
> contrib stuff under CPL? Since clojure is not really eclipse-related, I
> don't see a good rationale. IMHO, the Lesser GPL would be a much better
> fit. Then you can use clojure also in commerc
2009/8/30 mlm :
> (setq swank-clojure-extra-
> classpaths
> (list
> "/opt/clojure/clojure-contrib/clojure-contrib.jar:/opt/clojure/swan\
> k-clojure/swank/swank.clj"))
Try changing the swank-clojure bit to point to the directory rather
than the .clj file, i.e. either /opt/clojure/swank-clo
In general, staying on the purely functional side will most likely
kill your performance.
You will need some mutation (I'd like to be proven otherwise,
though).
And not mutation via refs and so on, but mutation in the Java sense.
So you'll have to create some Java classes for your game objects
It
On Sun, Aug 30, 2009 at 6:01 AM, Elliott Slaughter <
elliottslaugh...@gmail.com> wrote:
>
> All game simulation models I've seen used graphs of mutable objects;
> I'm not entirely sure how to move to a more functional model. One the
> one hand, reallocating the game world on every frame seems exce
I'd like to convince some Python developers that Clojure is not foreign and
does many things better than Python. I'd appreciate whatever suggestions
you have about what I've written.
Though I am crazy about STM and Clojure agents, I don't deal with them
here. This has to be a gentle introduction
On Sun, Aug 30, 2009 at 2:20 PM, ztellman wrote:
>
> You may have already seen this and decided Cloggle was a bit more to
> your liking, but I'm also working on a JOGL wrapper called Penumbra
> ( http://github.com/ztellman/penumbra/tree/master ). Documentation is
> thin, but here are some demos i
Hi,
Am 29.08.2009 um 21:48 schrieb ronen:
In a lot of cases its seems that macros are used even when a function
can do the same task,
Macros seems to be less readable than their functional counterparts &
more complex to write (to me at least).
Its clear that there are special cases in which ma
You may have already seen this and decided Cloggle was a bit more to
your liking, but I'm also working on a JOGL wrapper called Penumbra
( http://github.com/ztellman/penumbra/tree/master ). Documentation is
thin, but here are some demos in the src/examples subdirectory to
illustrate usage. At th
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