Never mind, silly me. Of course, the identity of the method is not
the issue, it's the type of the argument.
user> (defn abs [x] (let [x (double x)] (Math/abs x)))
#'user/abs
; no reflection warning.
-Jason
--~--~-~--~~~---~--~~
You received this message because
I was profiling my app today, and noticed lots of time being spent in
Reflector.invokeStaticMethod. The cause was some calls to Math/abs,
which was surprising to me since clojure.org says "Note that type
hints are not needed for static members (or their return values!) as
the compiler always has
So rather than choosing between a stack depth and scanning through
noise, it might be better to just filter out the (obvious) noise. This
includes stuff that's down in the runtime (for most apps) and stuff
that is up above the test.
Shane Celis used that approach in his unit_test library. I forke
I would have expected the mult to be a performance hit, but my overly
simple tests show it performing better:
user=> (time (dotimes [i 100] (zero? (* 5 11
"Elapsed time: 183.358706 msecs"
user=> (time (dotimes [i 100] (or (< 5 0 11) (< 11 0 5
"Elapsed time: 682.586025 msecs"
In pr
> #(do ...) behaves the same way.
Ah yes nice... I noticed that (do) is documented in 'special forms'
but not in the API, whereas (let) is documented in both. Should do
appear in the API section for completeness?
--~--~-~--~~~---~--~~
You received this message beca
Just syntactical convenience I believe:
#((+ 1 %1)) looks silly :)
#(+ 1 %1) is nicer but more restrictive.
Notably you can still do multiple things:
user=> (#(let [] (println "hi") (+ 1 %1)) 1)
hi
2
On Feb 11, 3:09 pm, Mark Volkmann wrote:
> Just checking my understanding of the rules for wri
>
>
> Why can't I use ensure inside of a dosync block? Is there another way to
>> perform a transaction?
>>
>
> You can, but "map" is lazy. It's not being evaluated within the dosync. One
> way to fix the code is to force map to evaluate within the dosync using
> "dorun":
>
>(dosync (dorun
I was the source of this error, and I agree that the behavior is an
error. I missed the case of a negative divisor and a 0 remainder
among my test cases for the mod function.
Thanks for noticing and fixing the problem.
Although Chouser's version is slightly more compact than Pratley's, I
wonder
On Feb 10, 2009, at 11:09 PM, Mark Volkmann wrote:
Just checking my understanding of the rules for writing anonymous
functions ...
(fn [args] ...) allows any number of expressions in its body.
#(...) only allows a single expression in its body, correct?
Why the difference?
Because a single
fn has an implicit (do ...)
#(do ...) behaves the same way.
#(a b c) expands to
(fn [] (a b c))
if you put in multiple forms you get
#((a b)(c d))
expands to
(fn [] ((a b) (c d)))
note the (a b) in the operator position.
On Tue, Feb 10, 2009 at 8:09 PM, Mark Volkmann
wrote:
>
> Just checking my
No.
You can do #(+ %1 %2 %3 %4)
I don't know the max, but if you fear you'll hit it use fn.
You, however, cannot nest #() forms.
On Tue, Feb 10, 2009 at 11:09 PM, Mark Volkmann
wrote:
>
> Just checking my understanding of the rules for writing anonymous functions
> ...
> (fn [args] ...) allows
Just checking my understanding of the rules for writing anonymous functions ...
(fn [args] ...) allows any number of expressions in its body.
#(...) only allows a single expression in its body, correct?
Why the difference?
--
R. Mark Volkmann
Object Computing, Inc.
--~--~-~--~~-
Glad I could help. Enjoy coding.
On Tue, Feb 10, 2009 at 10:43 PM, Onorio Catenacci wrote:
>
> On Feb 10, 10:14 pm, Jeffrey Straszheim
> wrote:
> > This one is easy:
> >
> >(and this that the-other-thing)
> >
> > and is short-circuting, e.g. it returns nil/false on reaching the first
> > ni
I literally asked this same question yesterday in #Clojure. The answer
is and
user/ (doc and)
-
clojure.core/and
([] [x] [x & rest])
Macro
Evaluates exprs one at a time, from left to right. If a form
returns logical false (nil or false), and returns that value and
do
On Feb 10, 10:14 pm, Jeffrey Straszheim
wrote:
> This one is easy:
>
> (and this that the-other-thing)
>
> and is short-circuting, e.g. it returns nil/false on reaching the first
> nil/false element, or the value of the last element.
>
> I used it tonight like this:
>
> (and x (inc x))
>
>
My pleasure.
BTW, thanks for Clojure!
On Tue, Feb 10, 2009 at 10:32 PM, Rich Hickey wrote:
>
>
>
> On Feb 10, 10:24 pm, Jeffrey Straszheim
> wrote:
> > Say hello to laziness.
> >
> > Your code is returning a lazy seq (from the map), which is evaluated by
> the
> > reader outside of the dosync.
On Feb 10, 10:24 pm, Jeffrey Straszheim
wrote:
> Say hello to laziness.
>
> Your code is returning a lazy seq (from the map), which is evaluated by the
> reader outside of the dosync.
>
> Now what I don't understand is why, when I run:
>
> (dosync (dorun (map ensure [account1])))
>
> I get:
>
Since we're on the subject, what exactly does ensure *do* that simply
reading the ref does not? And then, how does it differ from writing.
On Tue, Feb 10, 2009 at 10:24 PM, Jeffrey Straszheim <
straszheimjeff...@gmail.com> wrote:
> Say hello to laziness.
>
> Your code is returning a lazy seq (
Say hello to laziness.
Your code is returning a lazy seq (from the map), which is evaluated by the
reader outside of the dosync.
Now what I don't understand is why, when I run:
(dosync (dorun (map ensure [account1])))
I get:
java.lang.RuntimeException: java.lang.IllegalArgumentException:
On Feb 10, 2009, at 10:01 PM, Eric Lavigne wrote:
Why can't I use ensure inside of a dosync block? Is there another
way to perform a transaction?
You can, but "map" is lazy. It's not being evaluated within the
dosync. One way to fix the code is to force map to evaluate within the
dosync
Oh, and for your specific example, try:
(and (= a something) (= b another-thing) (foo))
It will return false or (foo).
On Tue, Feb 10, 2009 at 10:08 PM, Onorio Catenacci wrote:
>
> Hi all,
>
> Still working on learning Clojure. I think I know the answer to this
> question (because I seem to
This one is easy:
(and this that the-other-thing)
and is short-circuting, e.g. it returns nil/false on reaching the first
nil/false element, or the value of the last element.
I used it tonight like this:
(and x (inc x))
This returns x+1, unless x is nil, in which case it returns nil.
Ma
Hi all,
Still working on learning Clojure. I think I know the answer to this
question (because I seem to have gotten it working) but I wanted to
confirm that this is the right way to do this.
In C++ I'd write something like this:
if (a == something && b == anotherthing)
{
foo();
}
Am I cor
On Feb 10, 2009, at 8:52 PM, Stuart Sierra wrote:
> Ok, new behavior in SVN rev. 449: Full stack traces are printed by
> default. Bind *stack-trace-depth* to an integer to limit the depth.
That's great, Stuart, thank you very much.
>> On Feb 10, 2:01 pm, Jeffrey Straszheim
>> wrote:
>>
>>> I
The way I understand it, "transaction running" means that the code is
executing inside a dosync block. So this should work:
(def account1 (ref 1000))
(def account2 (ref 2000))
(dosync (map ensure [account1 account2]))
However, I get the following error:
java.lang.IllegalStateException: No tra
On Tue, Feb 10, 2009 at 9:37 PM, Timothy Pratley
wrote:
>
> Great!
>
> (> (* num div) 0)
> could be (pos? (* num div)) too I guess... but is sadly slightly
> longer!
But simpler and clearer. Thanks for the catch.
--Chouser
--~--~-~--~~~---~--~~
You received thi
Great!
(> (* num div) 0)
could be (pos? (* num div)) too I guess... but is sadly slightly
longer!
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To post to this group, send email to clojure@google
On Tue, Feb 10, 2009 at 8:55 PM, Timothy Pratley
wrote:
>
> In the code I posted the let evaluated rem before checking the
> arguments.
Thanks for doing all the hard work. :-)
How about:
(defn mod42
"Modulus of num and div. Truncates toward negative infinity."
[num div]
(if-not (and (integ
nice, thanks!
=
ANGOL
=
-|-^...@^_^, =|+^_^X++~_~,@-
"The only thing worse than a hopeless romantic is a hopeful one"
Magbasa bago Mamuna. Mag-isip bago mambatikos
Without Truth there is no Justice,
Without Justice, there is Tyranny
Semper fi
Proof of Desire is Pursuit
www
In the code I posted the let evaluated rem before checking the
arguments.
It would be better arranged like so:
(defn mod2
"Modulus of num and div. Truncates toward negative infinity."
[num div]
(if (or (not (integer? num)) (not (integer? div)))
(throw (IllegalArgumentException. "mod req
Ok, new behavior in SVN rev. 449: Full stack traces are printed by
default. Bind *stack-trace-depth* to an integer to limit the depth.
-Stuart Sierra
On Feb 10, 8:25 pm, Jason Wolfe wrote:
> I agree that I'd like to (have an option to) see a whole stack trace,
> or barring that, bind the mo
On Feb 10, 2009, at 8:34 PM, Timothy Pratley wrote:
I spoke too soon. Apparently from the Lisp HyperSpec
mod performs the operation floor on number and divisor and returns the
remainder of the floor operation.
Which would indicate that mod1 is not consistent with LISP.
Seeing Java doesn't have a
Thanks, Chas. Fixed in SVN rev. 448.
-Stuart Sierra
On Feb 10, 4:36 pm, Chas Emerick wrote:
> In the process of tracking down some failing test-is tests, I believe
> I discovered that it (via stacktrace) swallows exceptions.
> Specifically, when an error occurs, it uses stacktrace/print-cause-
>
Do you mean, just exporting it as a normal .jar file, and not an
executable jar file? In Netbeans, which is what I've been using before
trying Clojure-dev, there was just a build button that would build an
executable .jar with a lib folder for Clojure.jar and whatever else
the project depended on.
I spoke too soon. Apparently from the Lisp HyperSpec
mod performs the operation floor on number and divisor and returns the
remainder of the floor operation.
Which would indicate that mod1 is not consistent with LISP.
Seeing Java doesn't have a proper mod, it would seem sensible to
follow the LISP
I agree that I'd like to (have an option to) see a whole stack trace,
or barring that, bind the most recent exception to some var so I can
look at it later (c.f. *e). The limited trace hindered my debugging
just yesterday.
On Feb 10, 2:01 pm, Jeffrey Straszheim
wrote:
> I've found that, in gene
On Tue, Feb 10, 2009 at 11:32 AM, Tzach wrote:
>
> Thanks for the response
> Yes, I'm using Emacs SLIM.
>
> what should be the relation between the file (hello.clj) path to the
> classpath?
> Is the compile work on the file name, or on the function? in other
> word, should I evaluate the function
On Tue, Feb 10, 2009 at 10:07 AM, Lennart Staflin wrote:
>
>
>
> On Feb 10, 2:45 pm, Tzach wrote:
>
> > I got "error in process filter: Wrong number of arguments: nil, 3".
> > What am I missing here?
>
> Are you using Emacs with slime?
>
>
Psychic debugging skills in action :)
--~--~-~--
Hello,
Normally not currently, or, if it works, it would be unintentional :-)
More seriously : this indeed is not an officially supported feature.
The long answer is : it depends on what you mean by "jar".
Eclipse + clojuredev seems capable of producing a very correct jar with what
you want : e
2009/2/11 Laurent PETIT
>
>
> 2009/2/10 Stephen C. Gilardi
>
>>
>> On Feb 10, 2009, at 12:32 PM, Greg Harman wrote:
>>
>> Let me offer a perspective coming from a Java background:
>>>
>>> I know that there are subtle differences between a namespace and a
>>> Java package, but I still tend to su
2009/2/10 Stephen C. Gilardi
>
> On Feb 10, 2009, at 12:32 PM, Greg Harman wrote:
>
> Let me offer a perspective coming from a Java background:
>>
>> I know that there are subtle differences between a namespace and a
>> Java package, but I still tend to subconsciously consider them
>> analogous:
On Feb 10, 7:15 pm, Laurent PETIT wrote:
> Hello,
>
> 2009/2/10 Stephen C. Gilardi
>
>
>
>
>
> > On Feb 10, 2009, at 11:46 AM, Laurent PETIT wrote:
>
> > If I understand correctly your proposal, can you verify the following is
> >> true :
>
> >> (ns foo.bar)
> >> (ns foo.bar.util)
> >> (ns fo
Hello,
2009/2/10 Stephen C. Gilardi
>
> On Feb 10, 2009, at 11:46 AM, Laurent PETIT wrote:
>
> If I understand correctly your proposal, can you verify the following is
>> true :
>>
>> (ns foo.bar)
>> (ns foo.bar.util)
>> (ns foo.bar.impl)
>> (ns foo.bar.data)
>>
>> with foo.bar decomposed in tw
Interesting!
Based upon
http://mathforum.org/library/drmath/view/52343.html
mod might be modified to look like this
(defn mod1
"modulus of num and div."
[num div]
(cond
(or (not (integer? num)) (not (integer? div)))
(throw (IllegalArgumentException.
"mod requires two int
On Feb 10, 2009, at 12:02 PM, Craig Andera wrote:
4) To ask if there's anything else people would particularly like to
see added/changed. On my list are to make each namespace collapsible
in the same way the source is.
I like it a lot. I think it would be very cool if such an HTML file
cove
On Tue, Feb 10, 2009 at 5:01 PM, Jeffrey Straszheim
wrote:
> I've found that, in general, the stack dumps you get back from Java (into
> Clojure-land) are pretty unhelpful.
That may be, but I think Chas's point is valid. Typically there are
pointers to your own source files, but they're often mo
>
> Maybe _ is appropriate?
>
> => (let-> _ (+ 1 2) (* 2 _) (+ _ 1))
> 7
> => (let-> _ [1 2 3] (map inc _) (reduce + _) (+ _ 3))
> 12
>
> Or maybe ? ?
Don't forget the wide variety of unicode symbols you have at your
disposal:
user=> (let-> ★ 2 (+ ★ 3) (- 10 ★ ) (map #(* ★ %) [2 3 4]))
(10 1
Hi,
Am 10.02.2009 um 23:34 schrieb Michael Reid:
Maybe _ is appropriate?
=> (let-> _ (+ 1 2) (* 2 _) (+ _ 1))
7
=> (let-> _ [1 2 3] (map inc _) (reduce + _) (+ _ 3))
12
Or maybe ? ?
I would not use _. _ is often used as "don't care" variable
name. And this is certainly not what we want here
I'm not sure, I've never really used Eclipse that much, and I was
wondering if it is possible. I can't see a way how, but maybe I'm
missing something.
Sorry if this isn't quite the right place to post this, but I couldn't
find another place.
Thanks -Rayne
--~--~-~--~~~---
Hi PH,
> "Returns a map of the elements of col to the evaluation of function
(zipmap keys (map fun keys))
http://groups.google.com/group/clojure/browse_thread/thread/8fe99ca560c4515/9721d59987207241?lnk=gst&q=zipmap#9721d59987207241
If you are following Matt's suggestion of a sorted map thoug
On Tue, Feb 10, 2009 at 5:02 PM, MattH wrote:
>
> The pipe macro is definitely not a new idea btw. It's taken from a
> thread posted on another lisp group.
>
> Someone posted a silly inflammatory attack on lisp, contrasting unix:
> "cat a b c | grep xyz | sort | uniq"
> to how they'd imagine it
The pipe macro is definitely not a new idea btw. It's taken from a
thread posted on another lisp group.
Someone posted a silly inflammatory attack on lisp, contrasting unix:
"cat a b c | grep xyz | sort | uniq"
to how they'd imagine it in lisp:
"(uniq (sort (grep xyz (cat a b c"
A poster c
I've found that, in general, the stack dumps you get back from Java (into
Clojure-land) are pretty unhelpful.
On Tue, Feb 10, 2009 at 4:52 PM, Chas Emerick wrote:
>
> test-is' :error implementation for the report method restricts the
> printing of caught exceptions' frames to 5. I'm finding it
test-is' :error implementation for the report method restricts the
printing of caught exceptions' frames to 5. I'm finding it very
inconvenient, as many common exceptions have as their first 5-10
frames essentially unhelpful source information. For example, a
typical IllegalArgumentException thr
Okay, can I ask exactly how you produce the map ? In my situation I
know how to compute whether a cell [i,j] is blocked, I can generate
the list of couples [i,j] that suits me ... and then I am stuck, not
knowing with function / macro to call. I guess it's just the same
problem as with cond, I am
I've seen different theories on how mod should treat negative divisors, but
I've never seen that "solution".
On Tue, Feb 10, 2009 at 4:30 PM, Chouser wrote:
>
> Is 'mod' working correctly?
>
> user=> (map #(mod % 3) (range -9 9))
> (3 1 2 3 1 2 3 1 2 0 1 2 0 1 2 0 1 2)
>
> It disagrees with, for
In the process of tracking down some failing test-is tests, I believe
I discovered that it (via stacktrace) swallows exceptions.
Specifically, when an error occurs, it uses stacktrace/print-cause-
trace in order to print a stack trace for the error encountered.
That's fine, but unless I'm mistaken
Is 'mod' working correctly?
user=> (map #(mod % 3) (range -9 9))
(3 1 2 3 1 2 3 1 2 0 1 2 0 1 2 0 1 2)
It disagrees with, for example, Ruby:
irb(main):002:0> (-9..9).map{|x| x % 3}
=> [0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0]
And python:
>>> map( lambda x: x % 3, range(-9,9) )
I see that a "lib" section has been added to the Clojure site since I
was last there, which is a good major step. I think that it may be
useful to add a section there explicitly describing the differences
from standard Java packaging, perhaps adding a Java package example to
compare against the li
> When I was writing it,
> it sure seemed like I was missing a call to resolve somewhere, but
> when it worked for some symbols, I got a) excited, and b) confused. :)
Yep, that was basically it: I was calling get-source on the symbol
that named the member, but I wasn't bothering to namespace-qual
Since my Rend library made it a bit too late to catch the first
iteration of the Clojure library page, I'll take the opportunity to
change the name to something a little less ambiguous. "Rend" sounded
too much like "render", so I've renamed it to "re-rand":
Name: re-rand
URL: htt
On Feb 10, 12:34 pm, Krešimir Šojat wrote:
> > this errors on loading. Should that be "add-watch" instead?
>
> In revision 1194 add-watch was renamed to add-watcher.
>
> --
> Krešimir Šojat
Ah, ok, the API docs don't reflect this.
--~--~-~--~~~---~--~~
You recei
> I see that "show source" links are missing on your page for some
> functions -- does this indicate a failure of repl-utils/get-source?
I think so. But I'm willing to believe that the error is elsewhere.
It's just hard for me to see where it could be.
> These seem to work fine for me:
>
> user=
Hi,
Am 10.02.2009 um 18:52 schrieb Stephen C. Gilardi:
In clojure.contrib we have many unrelated libs under
clojure.contrib. If lazy_seqs.clj (a lib) needed to load functions
from fast_memoize.clj (a load file that defines functions in the
lazy-seqs namespace), would it really be clearer/a
I suggested the following changed to letfn:
http://code.google.com/p/clojure-contrib/issues/detail?id=26
and have been informed that you manage this code. Does this change look
good to you?
-- Forwarded message --
From:
Date: Tue, Feb 10, 2009 at 12:31 AM
Subject: Issue 26 in
On Feb 10, 2009, at 12:32 PM, Greg Harman wrote:
Let me offer a perspective coming from a Java background:
I know that there are subtle differences between a namespace and a
Java package, but I still tend to subconsciously consider them
analogous: they are container structures for organizing c
Hi,
Am 10.02.2009 um 18:00 schrieb Jeff Rose:
Oh cool! I hadn't thought about this aspect of laziness before. I
can
see there is some zen here that is worth exploring...
Many ways to Rome:
(first (drop-while (complement predicate) coll))
:)
Sincerely
Meikel
smime.p7s
Description: S/
On Feb 10, 2009, at 11:46 AM, Laurent PETIT wrote:
If I understand correctly your proposal, can you verify the
following is true :
(ns foo.bar)
(ns foo.bar.util)
(ns foo.bar.impl)
(ns foo.bar.data)
with foo.bar decomposed in two files : foo/bar.clj and foo/bar1.clj
just one file per ns, w
On Tue, Feb 10, 2009 at 12:02 PM, Craig Andera wrote:
>
> 3) To ask specifically why clojure.contrib.repl-utils.get-source fails
> so often. I can't figure out why so many of the members fail to
> display the source, when some of the others do, sometimes even in the
> same namespace.
I see that
Thanks! I look through those later.
On Tue, Feb 10, 2009 at 12:11 PM, Frantisek Sodomka wrote:
>
> Cells - A dataflow extension to CLOS
> http://common-lisp.net/project/cells/
>
> Some discussions on this list (ordered by date):
>
> (discussed in) Clojure Poll 09/2008
>
> http://groups.google.co
> this errors on loading. Should that be "add-watch" instead?
In revision 1194 add-watch was renamed to add-watcher.
--
Krešimir Šojat
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To post to thi
Let me offer a perspective coming from a Java background:
I know that there are subtle differences between a namespace and a
Java package, but I still tend to subconsciously consider them
analogous: they are container structures for organizing code. The code
itself (Java classes, or Clojure files
On Feb 9, 5:00 pm, Stuart Sierra wrote:
>
> My latest implementation, at clojure.contrib.auto-agents, does *not*
> handle circular dependencies. It uses Agents and Watchers to
> implement the updates.
from auto-agent.clj:
(defmacro auto-agent
"Creates an agent whose value is the result of
Cells - A dataflow extension to CLOS
http://common-lisp.net/project/cells/
Some discussions on this list (ordered by date):
(discussed in) Clojure Poll 09/2008
http://groups.google.com/group/clojure/browse_frm/thread/549696530ccbd0d/24a9c4b795f86ee6?lnk=gst&q=CELLs#24a9c4b795f86ee6
(discussed i
Sorry, I can't help you concerning emacs and slime, I'm a noob concerning
their configuration.
BTW, if you don't want to bother with classpath considerations, ..., you
should think about trying either netbeans with enclojure or eclipse with
clojuredev or Intellij IDEA with the clojure plugin. Bein
One of the challenges with learning any new platform is learning the
libraries. As a way to improve both that an my knowledge of Clojure
itself, I whipped together doc-browse, a Clojure library that will
spit out an HTML page that contains documentation for a set of Clojure
libs. You can see an ex
Oh cool! I hadn't thought about this aspect of laziness before. I can
see there is some zen here that is worth exploring...
Thanks Mark and Stuart.
-Jeff
Mark Fredrickson wrote:
> Filter is lazy:
>
> http://clojure.org/api#toc228
>
> So you can implement find-first as (first (filter pred col
Hi Jeffrey,
Neman Cells can handle circular dependencies, its just for now I
didn't need such a feature so its not exposed in clear way how to do
it:
(def a (Cell. {:value 5}))
(def b (cell [a] [v] (dec v)))
(add-trigger a
(fn [old-v new-v]
(println (str "Cell a changed from: " o
If I understand correctly your proposal, can you verify the following is
true :
(ns foo.bar)
(ns foo.bar.util)
(ns foo.bar.impl)
(ns foo.bar.data)
with foo.bar decomposed in two files : foo/bar.clj and foo/bar1.clj just one
file per ns, would result in the following structure :
/foo/bar.clj
/foo
Thanks for the response
Yes, I'm using Emacs SLIM.
what should be the relation between the file (hello.clj) path to the
classpath?
Is the compile work on the file name, or on the function? in other
word, should I evaluate the function on the REPL before compile?
Thanks
Tzach
On Feb 10, 5:25 pm
On Feb 10, 11:18 am, Jeff Rose wrote:
> Is there a built-in function that will return the first item in a
> collection that matches a predicate? (Something equivalent to Ruby's
> Enumerable#find...) Seems pretty basic, but I can't find it in the docs.
Hi, Jeff, here's how I do it:
user> (de
Filter is lazy:
http://clojure.org/api#toc228
So you can implement find-first as (first (filter pred coll))
-M
On Feb 10, 2009, at 10:19 AM, Jeff Rose wrote:
>
> Well, in case someone else needs the same function and it isn't built-
> in, here's what I'm using in the meantime. (Based off of
Well, in case someone else needs the same function and it isn't built-
in, here's what I'm using in the meantime. (Based off of the some
function that comes in core...)
(defn find-first [pred coll]
(when (seq coll)
(if (pred (first coll))
(first coll)
(recur pred (rest coll
On Feb 10, 2009, at 10:04 AM, Rich Hickey wrote:
On Feb 10, 9:45 am, "Stephen C. Gilardi" wrote:
I came across this when updating the wikibook concepts page,
Libraries
section, to be correct for current Clojure behavior.
In an early implementation of the code that handles libs, the
reso
Hi,
Is there a built-in function that will return the first item in a
collection that matches a predicate? (Something equivalent to Ruby's
Enumerable#find...) Seems pretty basic, but I can't find it in the docs.
Thanks,
Jeff
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You receive
In fact, Rich had far better arguments than mines :-)
But again, while I agree with you that it may be time to fix things before
1.0, alas, I have no better proposal to make, so I think it's better to
stick with the current implementation, and move when the "click" happens in
our heads :-)
Regard
On Feb 10, 2009, at 10:02 AM, Laurent PETIT wrote:
Hello,
Here are some (quick) thoughts :
- The wikibook example could also be adapted to the new way of doing
things : having add1, otherfunc and morefuncs files in the same
directory as ourlib ?
Yes it could. They are, however, logicall
Hello,
Can you be more specific about : what is in what file in your example, and
what is the structure of the directories you use for the test ?
Normally, this should be :
(say src is the root source directory set in your classpath) :
I looked at Neman Cells. It looks like a pretty straightforward
implementation of the observer pattern. I only took a quick glance, but I
see nothing that would handle circularity. The async cells look to me like
one could have an inconsistent view of the data depending on *when* one
looked at t
On Feb 10, 2:45 pm, Tzach wrote:
> I got "error in process filter: Wrong number of arguments: nil, 3".
> What am I missing here?
Are you using Emacs with slime?
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On Feb 10, 9:45 am, "Stephen C. Gilardi" wrote:
> I came across this when updating the wikibook concepts page, Libraries
> section, to be correct for current Clojure behavior.
>
> In an early implementation of the code that handles libs, the resource
> (file) for lib a.b.c was at the path "a/b/
Hello,
Here are some (quick) thoughts :
- The wikibook example could also be adapted to the new way of doing things
: having add1, otherfunc and morefuncs files in the same directory as ourlib
?
- if the other "parts" of the lib are not in the same directory/package as
the "master lib file", whe
I came across this when updating the wikibook concepts page, Libraries
section, to be correct for current Clojure behavior.
In an early implementation of the code that handles libs, the resource
(file) for lib a.b.c was at the path "a/b/c/c.clj" within classpath.
At that time it was natural
I tried out the new code last night and it worked perfectly. Thanks!
On Mon, Feb 9, 2009 at 11:29 AM, Rich Hickey wrote:
>
>
>
> On Feb 7, 9:36 pm, Jeffrey Straszheim
> wrote:
> > With the help of the IRC folks I solved my own problem.
> >
> > I thought I'd share my findings:
> >
> > You canno
On Feb 10, 2009, at 8:29 AM, Jesse Aldridge wrote:
I had to get rid of the "clojure/" part to make it work. Is the wiki
wrong? If so, could somebody update it?
Hi Jesse,
Thanks for the report. I've updated that section to be correct (I
believe) for current Clojure. Please let us know if
I try to use the following example
(ns clojure.examples.hello
(:gen-class))
(defn -main
[greetee]
(println (str "Hello " greetee "!")))
(compile 'clojure.examples.hello)
I got "error in process filter: Wrong number of arguments: nil, 3".
What am I missing here?
Thanks
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This turned out to be caused by a large code literal in some test
code. Java classfiles have certain implementation limits -- in
particular, limits on the size of the bytecode that implements methods
(as well as other elements in classfiles).
Rich discussed this briefly back in November here, wh
Here in the wiki:
http://en.wikibooks.org/wiki/Clojure_Programming/Concepts#Libraries
The examples make use of the clojure/ns command, for example:
(clojure/ns example.ourlib)
I had to get rid of the "clojure/" part to make it work. Is the wiki
wrong? If so, could somebody update it?
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On Tue, Feb 10, 2009 at 1:33 PM, Rich Hickey wrote:
> On Feb 10, 3:47 am, "Remco van 't Veer" wrote:
>> Hi Rich,
>>
>> I've been working on getting clojure in a more usable state for android
>> [1]. One of the challenges was to speedup startup time. A lot of
>> time is spend in the lisp-reader
On Feb 10, 3:47 am, "Remco van 't Veer" wrote:
> Hi Rich,
>
> I've been working on getting clojure in a more usable state for android
> [1]. One of the challenges was to speedup startup time. A lot of
> time is spend in the lisp-reader because all constants are stored as
> lisp expressions.
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