Check out the thread below in the Compojure group. Specifically, look
for the comment by Brain Carper
http://groups.google.com/group/compojure/browse_thread/thread/67d92ceb4128a375?hl=en
Brian's code:
http://briancarper.net/clojure/compojure-doc.clj
This might be an alternate approach to the
Start by putting your code on github or something similar :)
On Apr 14, 8:01 pm, Chris wrote:
> While playing around with clojure I've found the (time ...) macro
> isn't as powerful as I'd like. To fix this I made a timing library to
> help me figure out where all my runtime is going. If other
Okay, I'm willing to bet this crowd has already seen this:
http://www.sun.com/third-party/global/oracle/index.jsp
Any thoughts on how this affects Clojure?
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"Clojure" g
n years.
*Will Java continue to be open source?
*What the hell is going to happen to JDBC?
Of course, I won't even begin to get into MySQL issues. Time to
install Postgres...
Has anyone here been able to install Clojure on IcedTea?
On Apr 20, 9:22 am, hank williams wrote:
> On Mon, Ap
Thanks to *everyone* for responding! I can see that I was over
reacting yesterday. Time for me to stop worrying and get back to
coding.
Sean
On Apr 21, 2:05 am, Adrian Cuthbertson
wrote:
> There are some precedents - the acquisition of SleepyCat (berkeley db,
> et al) - still readily availabl
There recently was a ton of traffic about SCM in the "Path to 1.0"
thread. Google made the following announcement:
http://google-code-updates.blogspot.com/2009/04/mercurial-support-for-project-hosting.html
Does this make changing the SCM tool to Hg a real possibility? While
this might not be s
Thank you and congrats!
On May 4, 9:46 am, AlamedaMike wrote:
|> Congratulations, Rich! And thanks for all your hard work. Having a
1.0
|> release out to help adoption in the workplace environments that we
|> need to get into.
Indeed, this is the case where I work. Having a stable version to
t
Hi,
Has anyone else here been using Clojure to interact with SAP? Or, are
there any JCo experts in the house?
Sean
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Okay, I've got code that works in Java but I can't get working in
Clojure. Here's the code in Java
public class TutorialConnect1 extends Object {
JCO.Client mConnection;
public TutorialConnect1() {
try {
// Change the logon information to your own system/user
mConnection = JC
ng in REPL, then you need to include everything you
> need in the classpath the the invoked JVM, for example:
>
> java -classpath my-jar-file-containing-DsrlPassport.jar;clojure.jar
> clojure.main
>
> On 5 May, 15:54, Sean Devlin wrote:
>
> > Okay, I've got code that
epl...
>
> (TutorialConnect1.)
>
> That might highlight the problem - your java stack strace might give
> some clues. It does sound like a classpath problem of some sort.
>
> Rgds, Adrian.
>
> On Tue, May 5, 2009 at 6:04 PM, Sean Devlin wrote:
>
> > That's a really good
Yeah, it was a classpath error. I had to create the following dummy
object:
com.sap.jdsr.writer.DsrIPassport
Once I did that and added it to the classpath, I was golden. Turns
out this is a known error with SAP JCo
Thanks everyone!
On May 5, 1:49 pm, Sean Devlin wrote:
> Another gr
+1
On May 9, 2:33 am, Mark Derricutt wrote:
> Hi,
>
> Can we add the following to contrib's sql namespace, it simply adds "jndi"
> as a db-spec scheme ( I also raised this
> ashttp://code.google.com/p/clojure-contrib/issues/detail?id=39, which google
> decided to set as a defect and I can't cha
Here are my thoughts on the three approaches:
Approach #1: This seems the most straightforward. I'd write a
function that takes a map of conditions, and returns a list of
tuples. You can then do what you want with the list of tuples.
Approach #2: Remember the first rule of macro club: Don't
function-vs-macro debate,
and I we can save those for another day :)
On May 11, 12:04 pm, Victor Rodriguez wrote:
> On Mon, May 11, 2009 at 11:32 AM, Sean Devlin
> wrote:
>
> > Here are my thoughts on the three approaches:
>
> > Approach #1: This seems the most str
Macros are definitely the tool to do this. Take a look here at Paul
Graham's "The Roots of Lisp". In it you'll get an idea of why eval is
so powerful, and why macros are exactly the tool for the job you're
thinking of.
http://lib.store.yahoo.net/lib/paulgraham/jmc.ps
I'll let someone else answ
One thing hit me as I went to bed last night about this problem:
Writing a macro to optimize an s-exp *is* writing a compiler.
The good news is that you *don't* have to write a parser. There is
some low hanging fruit here (like the + macro described above), but I
imagine there will be a lot of
Hello again everyone,
I've added a few new routines to a string library I've been working
on. I mentioned it about a month ago, as a proposed change to str-
utils.
Original Thread:
http://groups.google.com/group/clojure/browse_thread/thread/42152add46b851a0#
Github:
http://github.com/francoisde
seems to occur
> common enough that it's not a bad idea.
>
>
>
> On Thu, May 14, 2009 at 1:12 AM, Sean Devlin wrote:
>
> > Hello again everyone,
> > I've added a few new routines to a string library I've been working
> > on. I mentioned it ab
to occur
> > common enough that it's not a bad idea.
>
> > On Thu, May 14, 2009 at 1:12 AM, Sean Devlin
> > wrote:
>
> >> Hello again everyone,
> >> I've added a few new routines to a string library I've been working
> >
Hmmm... it sounds like there would be use for a "string table utils"
or something like that.
On May 14, 11:12 am, Daniel Lyons wrote:
> On May 14, 2009, at 7:14 AM, Stuart Halloway wrote:
>
>
>
> > FYI: I am working on an open-source CSV parser in Clojure. Splitting
> > on delimiters is rarely e
Clearly you are all dog people. Lazy cat is redundant.
On May 16, 3:55 pm, Meikel Brandmeyer wrote:
> Hi,
>
> Am 16.05.2009 um 21:48 schrieb George Jahad:
>
> > I can't come up with a reason to use lazy-cat over concat. Is it
> > just around for backwards compatibility, or am I missing someth
p.
Sean
On May 16, 4:13 pm, Laurent PETIT wrote:
> 2009/5/16 Sean Devlin :
>
>
>
> > Clearly you are all dog people.
>
> Hello,
>
> What means calling others "dog people" exactly ?
>
> Not being a native english person, I'm unsure whether th
I was making a joke about housecats.
Maybe I should file a bug report saying cat should default to being
lazy :)
Again, sorry for the confusion.
On May 16, 4:34 pm, Meikel Brandmeyer wrote:
> Hi,
>
> Am 16.05.2009 um 21:58 schrieb Sean Devlin:
>
> > Lazy cat is redundant.
The duck streams library should give some examples the Java crowd will
be ready to appreciate. That, or maybe use the with-open macro.
My $.02
On May 21, 7:42 am, Rich Hickey wrote:
> On May 21, 3:39 am, mikel wrote:
>
>
>
> > On May 18, 7:36 am, Rich Hickey wrote:
>
> > > I'll be doing two
I just noticed a quirk in the core API. The some and every? functions
have different naming conventions. Is there a reason for this? If
not I think renaming/creating an alias some? would be very helpful.
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r...))
Just more to discuss
On May 26, 9:02 am, Sean Devlin wrote:
> I just noticed a quirk in the core API. The some and every? functions
> have different naming conventions. Is there a reason for this? If
> not I think renaming/creating an alia
sult of the predicate, filter returns the seq item
> for which predicate matches.
>
> Concerning the result of some, it seems better to return a more
> meaningful value, because it still can be used as logical true, e.g.
> in an if or when construct ...
>
> 2009/5/26 Sean Devlin :
>
Oops, thanks
On May 26, 9:45 am, Laurent PETIT wrote:
> Please refer to Chouser's answer for your main point,
>
> Regards,
>
> --
> laurent
>
> 2009/5/26 Sean Devlin :
>
>
>
> > Okay, excellent counterexample for some. I understand that behavior
>
I would lead the desired term with ~'
For example:
`(+ 1 2)
=> (clojure.core/+ 1 2)
`(~'+ 1 2)
=> (+ 1 2)
This is very useful when defining a function in a macro
On May 26, 2:30 pm, kyle smith wrote:
> user> (def nums '(1 2 3))
> #'user/nums
> user> (def funs '((+ (1 2 3)) (- (1 2 3
> #'
CuppoJava,
Could you give us a little more information what you're trying to do?
What type of macro-macros are you writing?
On May 28, 4:58 am, Konrad Hinsen wrote:
> On 28.05.2009, at 03:11, CuppoJava wrote:
>
> > I'm using macroexpand-1 right now, but it's not terribly useful as
> > backquote
Okay, this looks a lot like the ruby yeild statement. Is that what
inspired you?
On May 28, 12:50 pm, CuppoJava wrote:
> That's unfortunate. It would have made matters much easier for me.
>
> The macro I'm attempting to write is:
>
> (defblockfn my_block_fn [arg1 arg2 func]
> (op1 arg1)
> (
Okay, great. That's my background too.
Without discussing a specific application, I think what you're looking
for can be achieved by normal macros and functions in Clojure. I'll
try implement the collect method in Clojure, and hopefully that will
explain things.
Let's start by creating a colle
On May 28, 3:01 pm, Meikel Brandmeyer wrote:
> Hi,
>
> Am 28.05.2009 um 20:11 schrieb Sean Devlin:
>
> > Without discussing a specific application, I think what you're looking
> > for can be achieved by normal macros and functions in Clojure. I'll
>
On May 28, 3:10 pm, CuppoJava wrote:
> Thank you Meikel for going to the trouble of writing out the full
> macro. It's going to take me a while to decipher it, and hopefully
> grasp some understanding at the end of it.
"I find defblockfn very useful for functions that take a single
function as
Okay, good to know. It's interesting to see other approaches. It's
how we collectively get better.
My $.02:
(with_file "myfile.txt"
#(write "asdf")
(close))
Sean
On May 28, 3:23 pm, CuppoJava wrote:
> It's useful in all the cases where a blocks are useful in Ruby. It
> simply saves
That's true. Good job Meikel, macro master!
On May 28, 3:31 pm, CuppoJava wrote:
> Correction: By "My macro" I, of course, mean "Meikel's macro" since
> you're the one that actually got it working.
>
> Have to give credit where it's due. =)
--~--~-~--~~~---~--~~
Likewise. Good discussion.
On May 28, 4:49 pm, Meikel Brandmeyer wrote:
> Hi,
>
> Am 28.05.2009 um 22:23 schrieb CuppoJava:
>
> > Thanks to Meikel and Sean for their input and help.
>
> You are welcome. :)
>
> Sincerely
> Meikel
>
> smime.p7s
> 5KViewDownload
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I just got my copy of Programming Clojure in the mail today. This is
the only time I expect to see the book in pristine condition, as I
know it will get bookmarked, highlighted, and well used in a hurry.
Congratulations Stuart!
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You received t
Would type hints help at all?
On May 29, 11:40 am, Laurent PETIT wrote:
> Hi,
>
> Here is my attempt, for the real benchmark test, it has an honorable
> result of 62 sec. (if there is no flaw in my algorithm, of course).
>
> ;; file shootout/ring.clj
> (ns shootout.ring
> (:gen-class))
>
> (de
Hello Everyone,
I've created a library for interacting with the clipboard. It's a
wrapper for the AWT clipboard library.You can find it here:
http://github.com/francoisdevlin/devlinsf-clojure-utils/tree/master
*Note - I changed the location of my string library for anyone
following that.
=
This would encourage documenting structs, so I think this is a good
idea.
Sean
On Jun 2, 11:31 am, Stuart Halloway wrote:
> I would like to see defstruct take an optional docstring. Would such a
> patch be welcome?
>
> Stu
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You received thi
I don't know either, but you can use the following work around
(defn my-seq[object]
(instance? clojure.lang.Seqable object))
(my-seq []) =>true
(my-seq {}) =>true
(my-seq #{}) =>true
(my-seq '()) =>true
(my-seq :a) => false
(my-seq 'a-symbol) => false
Still, it would be nice to know the righ
Could you throw together some live examples and unit tests?
On Jun 3, 1:10 pm, CuppoJava wrote:
> In case anybody else found defblockfn useful, here's the final
> version. The original didn't work when you used destructuring in the
> argument list of the function.
>
> (defn remove_destructuring
There was this language wiritten in '58 that can do just that. It's
called LISP.
Here's Paul Grahams paper on eval:
http://lib.store.yahoo.net/lib/paulgraham/jmc.ps
Get to the part where he defines eval, and let your brain stay on that
for a while. You'll see WHY macros work, and never ever go
Gut gemacht!
Absolutely amazing Meikel. Now get some well earned sleep.
Sean
On Jun 4, 6:22 pm, Meikel Brandmeyer wrote:
> Hi again,
>
> Am 05.06.2009 um 00:06 schrieb Meikel Brandmeyer:
>
> > The docstring is a bit contorted but I'm too sleepy now,
> > to get that right...
>
> And of course
ln "Maximum number of iterations
reached")
nil)
true (recur next-x (inc iter-count)))
So it's paying off already!
On Jun 4, 7:02 pm, "Stephen C. Gilardi" wrote:
> On Jun 4, 2009, at 6:54 PM, Sean Devlin wrote:
>
> > Gut gemacht
Okay, I may be going nuts here. I can seem to find the group by
function anymore. Where is it?
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Okay, found it.
clojure.contrib.seq-utils
On Jun 5, 10:15 am, Sean Devlin wrote:
> Okay, I may be going nuts here. I can seem to find the group by
> function anymore. Where is it?
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For those of you that may have the same problem in the future, check
the index:
http://code.google.com/p/clojure-contrib/wiki/ApiDocIndex
Great work.
On Jun 5, 10:25 am, Sean Devlin wrote:
> Okay, found it.
>
> clojure.contrib.seq-utils
>
> On Jun 5, 10:15 am, Sean Devlin wr
Try adding type hints. Assuming all-zips returns a list of strings:
(defn all-zips-MD5 []
"Returns a lazy list of all possible American zipcodes, as MD5
digests."
(let [digester (java.security.MessageDigest/getInstance "MD5")]
(map
(fn [#^java.util.String to-digest]
(.update
On Jun 5, 11:14 am, Daniel Lyons wrote:
> On Jun 5, 2009, at 8:56 AM, Daniel Jomphe wrote:
>
> > I need to generate a list of all possible American zipcodes, MD5-
> > digested. Later on, I will need to do much more involving stuff,
> > processor-wize, with this. But already, generating a naive
Sounds like a candidate for the daily WTF...
On Jun 5, 12:54 pm, Daniel Jomphe wrote:
> You guessed mostly right, Daniel :) This guy hashed some fields of his
> client's database, replacing the original content with its hashed
> version. I don't know everything, but he at least obfuscated the
>
This problem came up on the mailing list recently:
http://groups.google.com/group/clojure/browse_thread/thread/5e0c078d0ad8b8bc#
You might want to compare your code to what was done here, but at a
glance the implementations are similar.
You provide relative speed comparisons (Such and such is %
Not quite sure what the right way to report this is. There seems to
be some spam in the file report. The "Mathis-Oberg-
Insulating_Guide.pdf" seems to be out of place. My apologies if this
is a false positive.
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I think I know what you mean by a "bag", but I'm not quite sure. How
does a bag compare to a set, vector and/or list?
On Jun 9, 1:31 am, Richard Newman wrote:
> The relational operations work on sets. That's often useful, but there
> are situations in which preserving cardinality is more usef
I was trying to play with the monad facility in c.c. I'm using
Aquamacs & SLIME, and I ran into the following problem:
user=> (use 'clojure.contrib.monads)
java.lang.Exception: Unable to resolve symbol: get-method in this
context (accumulators.clj:60)
I think this is a bug. Not sure, though.
You're writing an email and
;Rich Hickey is a no good...
comment out a line instead of deleting it :)
(Fortunately I caught this before I hit send)
On Jun 4, 8:48 am, BrianS wrote:
> You see a license plate in front of you DEFN1A3F and you wonder what
> the function 1A3F would return...ha
Hmmm... I just tested this in Enclojure. use works fine there.
Still doesn't work on my Aquamacs/SLIME setup. I'll check my config.
On Jun 10, 2:14 am, Konrad Hinsen wrote:
> On 09.06.2009, at 23:48, Sean Devlin wrote:
>
> > I was trying to play with the monad facil
Hey everyone,
I'm looking for feedback on a date utility library I'm writing. It's
still early in it's design, and I want to see if other people see
anything. It's designed to create various forms of date objects.
It's available on github here:
http://github.com/francoisdevlin/devlinsf-clojure
bringing up this point.
On Jun 12, 10:19 am, "AndrewC." wrote:
> On Jun 12, 2:24 am, Sean Devlin wrote:
>
> > Hey everyone,
> > I'm looking for feedback on a date utility library I'm writing.
>
> Without wanting to seem down on your obvious care and hard
Hey everyone,
There have been a couple of threads discussing date utilities in this
group.
http://groups.google.com/group/clojure/browse_thread/thread/d98e8efd8d5517b2#
http://groups.google.com/group/clojure/browse_thread/thread/659503e698ede0b5/9dda25f36f102799?lnk=gst&q=joda#9dda25f36f102799
What exactly do you mean by systems programming?
If you mean hardware stuff that's outside the scope of the JVM, then
no, I doubt it. However, I am hard pressed to think of situations
that you can code with Java SE (dunno about ME) that you can't handle
with Clojure. Now that I think about it,
Hari,
First, I'd recommend you watch Rich's videos on Clojure, both for Java
programmers and LISP programmers. In it Rich explains why Clojure
*isn't* OO. It's heresy to some who has written lots of Java, but
once you see Clojure in action, everything starts to make sense. I
know when I went do
Yes, people have shown examples on this list where
(+ a b)
is dramatically faster than
(+ a b c)
On Jun 16, 1:42 pm, Paul Stadig wrote:
> On Tue, Jun 16, 2009 at 1:38 PM, Michel Salim wrote:
>
>
>
> > It's currently not possible to dynamically rebind functions:
>
> > (binding [+ -] (+ 5 3)) =
Did you try this from a fresh REPL? Maybe you made a typo somewhere?
I can't reproduce it.
user=> (def dozen 12)
#'user/dozen
user=> (binding [dozen 13] dozen)
13
On Jun 16, 2:08 pm, Stuart Halloway wrote:
> This surprised me. What part of my mental model needs to be
> adjusted? :-)
>
> user
I use 1.0, btw. Tested both on OSX and Windows.
On Jun 16, 2:19 pm, Mark Volkmann wrote:
> On Tue, Jun 16, 2009 at 1:08 PM, Stuart
>
> Halloway wrote:
>
> > This surprised me. What part of my mental model needs to be
> > adjusted? :-)
>
> > user=> (def dozen 12)
> > #'user/dozen
>
> > user=> (b
To borrow a term from ruby, the API should follow the "Principle of
Least Surprise". While ns-name works, I agree with pmf. It would be
nice if c.l.Namepsace implemented c.l.Named
My $.02
On Jun 16, 3:25 pm, Meikel Brandmeyer wrote:
> Hi,
>
> Am 16.06.2009 um 19:42 schrieb pmf:
>
> > I've not
That would be point 5 :)
On Jun 16, 3:45 pm, Daniel Lyons wrote:
> Sean,
>
> On Jun 16, 2009, at 10:59 AM, Sean Devlin wrote:
>
> > The last example was okay, but it felt a little forced. Let's create
> > a function to do the currying for us:
>
> > user=&
Thanks you!
On Jun 16, 8:17 pm, Rich Hickey wrote:
> Clojure and contrib repos are now on GitHub:
>
> http://github.com/richhickey/clojurehttp://github.com/richhickey/clojure-contrib
>
> Issues and other development collaboration has moved to Assembla:
>
> http://www.assembla.com/spaces/clojureh
Daniel, don't feed the WrexTroll
On Jun 17, 12:44 am, Daniel Lyons wrote:
> On Jun 16, 2009, at 10:34 PM, Wrexsoul wrote:
>
>
>
>
>
>
>
> > I'm shocked that this is missing from clojure.core:
>
> > (defn accum [f init coll]
> > (loop [x init c coll]
> > (if (empty? c)
> > x
> > (re
Wrexsoul,
Your right, I was out of line. I'm sorry. I should go through the
effort to explain myself rather than resort to personal attacks.
Sean
On Jun 17, 1:25 am, Wrexsoul wrote:
> On Jun 17, 12:57 am, Sean Devlin wrote:
>
> > Daniel, don't feed the WrexTroll
&g
Sounds awesome! Will you be able to post any material after the
talk? You know, slides, videos, notes, etc?
Sean
On Jun 17, 5:35 am, Daniel Lyons wrote:
> Hi everyone,
>
> I'm doing a short talk on declarative/logic programming, reasoning and
> expert systems for the Albuquerque Lisp/Scheme
Here's my solution to the problem. It's a bit long winded, so bear
with me (or ignore it :))
I defined a function trans
(defn trans [& params]...)
Let me show an example:
user=> (def test-map {:a 0 :b "B" :c "C"})
#'user/test-map
user=> ((trans :count count) test-map)
{:count 3, :a 0, :b "B"
; (= (list-to-map 1 2 3 4) (hash-map 1 2 3 4))
> true
>
> On Jun 18, 11:19 pm, Sean Devlin wrote:
>
> > Here's my solution to the problem. It's a bit long winded, so bear
> > with me (or ignore it :))
>
> > I defined a function trans
>
> > (d
I'm the "report guy", which means a lot of speadsheet/database/erp/
html scraping/mind reading type work. I use Clojure for a lot of ad-
hoc data processing. The following things make my job a lot easier:
* Quick feedback from the REPL
* Abstracting everything to a hash-map
* map/filter/remo
I like the map-key pattern, especially inside a function.
(fn [my-var]
({"A" 1 :b "one"} my-var))
In this example, the my-var works properly when passed a string.
(fn [my-var]
(my-var {"A" 1 :b "one"}))
The second example breaks when passed a string.
On Jun 18, 8:37 pm, kkw wrote:
> (my
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
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
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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e
>
> On Tue, Jun 23, 2009 at 8:36 AM, Sean Devlin wrote:
>
>
>
> > 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.
>
> > Se
How about a combination of the following tools instead of the Java
API:
c.c.prxml
c.c.duck-streams
compojure
I haven't tried this, and I have never worked with SOAP, so take it
with an appropriately sized grain of salt.
On Jun 24, 1:09 pm, Richard Newman wrote:
> > No response.
>
> > Not even
I'm pretty sure Clojure already does this, because of the built in
equality by value. I'm pretty sure the hash keys work of off the
value, too.
Do you have any code you could post to github or something? That
would help us determine if such a thing already exisits. I know this
doesn't save you
Hey,
Has anyone out there written an Apache POI wrapper yet?
Sean
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Hmmm... good to know POI still needs work. I guess I'll just stick
with CSV & tab delimited for now. Thanks!
On Jul 1, 1:56 pm, Richard Newman wrote:
> > Has anyone out there written an Apache POI wrapper yet?
>
> I started to (for Excel processing), only to abandon it in disgust.
> POI is j
Hey all,
I found this blog entry on how C++ replaced C, and it made me think of
how Clojure interacts with Java. Not a direct comparison, but I
figure I'm not the only on who'll like it.
http://ejohnson.blogs.com/software/2004/11/i_find_c_intere.html
Hope someone enjoys it.
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Hey everyone,
I've noticed on several occasions there's spam in the file section
(like right now. e.g. "SexyBabe.html").
What's the preferred approach to handle this:
1. Ignore it
2. Mention it on this list
3. Use a system for tagging files as spam
4. Some other idea?
--~--~-~--~---
I think your unquote is okay. ClojureQL does something similar.
However, my gut says this should be in a doseq, not a for statement.
Could be totally wrong, tough.
My $.02
Sean
On Jul 6, 2:39 pm, Mike wrote:
> Newbie question here. Probably answered in Stu's book, but I forgot
> it at home
Let me take a stab at you parametrization question
> * Parametrization of "function groups" *
>
> Lets say I have a bunch of functions that provide database operations
> (read, write, delete, ...). They all share information about the
> database the operate on. In an OO language, I would define t
This seems like a good use for a macro. A couple of thoughts:
1. Use arrays instead of lists
In clojure, it is "best practice" to use arrays for data. So, your
macro call should look like this.
(match [1 2 3]
[1 x] (+ x x)
[1 x y] (+ x y))
2. Could you post the source to mat
4. Is this example from SICP?
On Jul 8, 12:12 pm, Sean Devlin wrote:
> This seems like a good use for a macro. A couple of thoughts:
>
> 1. Use arrays instead of lists
> In clojure, it is "best practice" to use arrays for data. So, your
> macro call should look lik
Isn't this why you would use a doc string, and not a comment?
On Jul 8, 12:14 pm, Daniel Lyons wrote:
> On Jul 8, 2009, at 5:46 AM, Robert Campbell wrote:
>
> > It seems strange to me that Clojure doesn't support this concept
> > natively
>
> Comments are part of the problem. Clojure's reader
Laurent,
I don't quite understand your point. Could you please explain it a
little more?
Thanks
On Jul 8, 12:16 pm, Laurent PETIT wrote:
> 2009/7/8 Sean Devlin :
>
>
>
> > This seems like a good use for a macro. A couple of thoughts:
>
> > 1. Use arrays ins
Good point. I'll be careful to use the term vector in the future, and
array for java interop only.
On Jul 8, 12:30 pm, Laurent PETIT wrote:
> 2009/7/8 Sean Devlin :
>
>
>
> > Laurent,
>
> > I don't quite understand your point. Could you please explain it a
One question on design intent before feedback. Is your intent to have
this Clojure code called by Java code later?
On Jul 9, 7:31 am, Patrik Fredriksson wrote:
> Hi!
>
> I started to look closer at Clojure after Rich Hickey's presentation
> at QCon London in March, this is my first post. I spe
dered);
> assertTrue(unordered.isEmpty());
> assertTrue(ordered.isEmpty());
> }
>
> public void testJavaImpl() {
> doTestOrderByFreq(new JavaOrderer());
> }
>
> public void testClojureImpl() {
> doTestOrderByFreq(new step3.pneh
That pages says the scopes system is already designed. To you have
any preliminary design docs posted somewhere?
On Jul 9, 2:59 pm, Stuart Sierra wrote:
> On Jul 9, 6:10 am, Mike wrote:
>
> > Is there a pattern out there in Clojure for handling laziness at the
> > same time as handling resourc
To quote Benjamin Stewart:
;; the body of this fn should probably be a macro that takes
;; any number of comparisons and or-chain them correctly such that
;; ties cascade to the next comparison and obviates the need for
;; explicit calls to false-if-zero. Does it already exist?
This could be do
A quick java program:
public static void main(String[] args) {
System.out.println(1.0/0.0);
}
Infinity
On Jul 10, 11:08 am, John Harrop wrote:
> This is odd:
> user=> (/ 1.0 0.0)
> # (NO_SOURCE_FILE:0)>
>
> Shouldn't it be Double/POSITIVE_INFINITY?
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Okay, I just printed the color version... Damn! This is awesome! I
need to find some really heavy paper now, or a laminator machine, or
both.
Good job.
On Jul 10, 10:27 am, Steve Tayon wrote:
> Hi all,
>
> I uploaded a new revision.
>
> What's new?
> - filled tables with colours (grey version
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