On Sun, Dec 28, 2008 at 12:49 AM, bOR_ boris.sch...@gmail.com wrote:
Annoying way to start a morning :P. Thanks though for the tip on
htdp.org
I'm not trying to be annoying. I just don't know how valuable the
answer will be to you, until you've got a better handle on recursion.
The code
Thanks. I understood your intentions, and it didn't hurt for me to
find my own solution.
(time (count (expand (first myset
Elapsed time: 2426.327 msecs
403200
Timing yours it is about as fast as the flexible for version, but not
as fast as the tailored for version. Perhaps I should look at
Ah. The prohibitively long bit comes mainly from printing out the
whole list in emacs. Counting it is only a few seconds, and not that
much slower than for the fixed-length version. In computer-time it is
still taking ages though.
Why am I going through all of this?: I have 3 filters in the form
I'm not surprised that the flexible version takes a bit more time than
the one that's hardcoded to a for loop nested to 9 levels. The
flexible version necessarily involves recursion, which means
allocating some stack space with each call, and that's a bit of
overhead.
I am a bit surprised that
Mark Engelberg a écrit :
So one thing I don't get is why would tristan's pow code sometimes
generate a BigInteger, and sometimes a Long for the same resulting
number?
Good question.
(pow 2 32); returns 4294967296 (BigInteger)
(pow 4 16); returns 4294967296 (Long)
(pow 16 8); returns
I coded up a quickie iterative version for you so you can get an idea
what that looks like. My timing tests indicate that this runs many
times faster than even the hardcoded for loop nested to 9 levels.
; Convert to a vector, and pass off to step, which builds a lazy
sequence by applying
This iterative version doesn't behave properly if one of the sequences
is empty. Expand should probably check for this degenerate case
before passing the vector off to step.
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
On Dec 28, 12:26 pm, Mark Engelberg mark.engelb...@gmail.com
wrote:
This iterative version doesn't behave properly if one of the sequences
is empty. Expand should probably check for this degenerate case
before passing the vector off to step.
I'll take care of that
Interesting. on my comp,
Hello. I can't seem to find 'spit'.
java exception: unable to resolve symbol spit.
I'm using Clojure Box rev1142. Tried using the clojure.jar from the
20081217 release
of Clojure but to no avail.
spit is not documented on the clojure site API page like slurp is. I
can't
find it in clojure
Are you sure the code below works? It doesn't work for me with the
revision 1185. For me it outputs:
#Agent clojure.lang.ag...@355a47
0
and stops.
On Tue, Dec 23, 2008 at 12:18 PM, Stephen C. Gilardi squee...@mac.com wrote:
On Dec 23, 2008, at 1:03 PM, CuppoJava wrote:
(send-off my_agent
On Dec 28, 2008, at 9:58 AM, Mark Volkmann wrote:
Are you sure the code below works? It doesn't work for me with the
revision 1185. For me it outputs:
#Agent clojure.lang.ag...@355a47
0
and stops.
A change to Clojure's behavior at r1158 caused my incorrect (or at
least iffy) code break
You're not at fault here. The documentation about loading libraries is
still scarce and not very helpful yet. I too had to scramble to figure
this one out.
spit is in the duck-streams library in clojure.contrib. I understand
it is planned to be moved to the core library, as it should.
Here is
Hi,
Am 23.12.2008 um 17:08 schrieb Rich Hickey:
SVN 1184 implements this.
Feedback welcome on its utility for macro writers.
Many Thanks Rich!
Here is a half-baked quasiquote macro ripped out of the
syntax-quote reader:
(defmacro quasiquote
[form]
(let [unquote?(fn [f] (and (seq?
I tried creating a JSP to let Slime connect to a REPL running in
Tomcat, as was posted here:
http://groups.google.com/group/clojure/browse_thread/thread/d73efa2943179a36/dd1c84dcf658436e?lnk=gstq=jsp#dd1c84dcf658436e
The JSP works in that there is an instance of swank running in
Tomcat's JVM,
So I was wrote a function that read a InputStream into a
FileOutputStream.
I noticed (after my CPU fan kept turning on) that it was taking
upwards of 70% of my Athlon 64 X2 +5000!
Heres that version:
(defn read-bytes-to-file [istream filename]
(with-open [ostream (new FileOutputStream
Hi,
I'm trying to learn lisp and Clojure and so I'm trying some excercises
suggested here on the group a while ago.
I'm not doing too well, I had to cheat on excercise one (make a series
of integers) by looking at the source code to the range function, and
I'm now having to ask for help with
On Dec 28, 2008, at 5:27 AM, Christophe Grand wrote:
Mark Engelberg a écrit :
So one thing I don't get is why would tristan's pow code sometimes
generate a BigInteger, and sometimes a Long for the same resulting
number?
Good question.
(pow 2 32); returns 4294967296 (BigInteger)
(pow 4
(defn fib-helper [a b]
(fib-helper b (+ a b)))
(defn fib (fib-helper 0 1)) ; This doesn't work either: (defn fib (fib-
helper '(0 1)))
You're missing your argument list for fib.
(println (take 5 fib))
take creates a lazy list from a collection:
(take n collection)
Your fib does not
On Dec 28, 9:33 am, Mibu mibu.cloj...@gmail.com wrote:
You're not at fault here. The documentation about loading libraries is
still scarce and not very helpful yet. I too had to scramble to figure
this one out.
spit is in the duck-streams library in clojure.contrib. I understand
it is
(...)
This is perfectly possible, although not necessarily desirable.
(ns com.example.MyClass
(:gen-class
:state state
:init init
:methods [[getMyIntField [] Integer]
[setMyIntField [Integer] Void/TYPE]]))
(defn -init
[x]
[[] (ref x)])
(defn
Rich Hickey a écrit :
The right thing I think is to represent as Integer and Long whenever
possible, and do overflow checking (as is done in the static
add(long,long) etc) rather than pre-op upconversion to next size. This
would require the addition of a LongOps etc.
I see.
I've
Howdy, Folks,
The gauntlet has been thrown down:
-- Forwarded Message --
Subject: [jvm-l] Kawa Scheme on Android
Date: Sunday 28 December 2008 14:43
From: Per Bothner p...@bothner.com
To: jvm-langua...@googlegroups.com
I managed to get a hello-world-style program written in
Having used Rails myself I wanted to check this out and play with it. I'm
having some
trouble just loading the clj_record/core.clj file though:
1:1 user= (load-file clj_record/core.clj)
java.lang.Exception: Unable to resolve symbol: db in this context
(core.clj:19)
I'm sure it's something I'm
Hi
On Sat, Dec 27, 2008 at 11:40 PM, wubbie sunj...@gmail.com wrote:
I didn't get the syntax error at all:
Yes, but I think maybe there is a bug in Clojure that causes the first
case to work when it should give a syntax error. If it is not a bug
I do not understand why it ignores the
(neg? b-read)
(pos? b-read)
are not precisely opposites.
user= (pos? 0)
false
user= (neg? 0)
false
As you can see, the edge condition 0 is treated differently in you two
implementations.
This is the real difference, not the if.
Blocking streams that return 0 indicate that the stream is
On Sun, Dec 28, 2008 at 8:11 AM, Greg Harman ghar...@gmail.com wrote:
I tried creating a JSP to let Slime connect to a REPL running in
Tomcat, as was posted here:
http://groups.google.com/group/clojure/browse_thread/thread/d73efa2943179a36/dd1c84dcf658436e?lnk=gstq=jsp#dd1c84dcf658436e
The
Hi all,
I've been using command line Repl for a while and want to move to
slime/emacs
so I followed instructions in wiki
and got errors in emacs:
I was able to load ants.clj in upper panel.
On the bottom panel, alt -x slime give me the following errors:
(require 'swank.swank)
If you aren't interested in the permutations themselves, just the
number of them (if I read you right)
The only way I could think up to know exactly what
fraction of the optimum (2x 5%: remember the diploidi)) a set of
combined filters can present is by expanding these filters into a set
On Sun, Dec 28, 2008 at 6:01 PM, Craig Marshall cra...@gmail.com wrote:
Hi,
I'm trying to learn lisp and Clojure and so I'm trying some excercises
suggested here on the group a while ago.
I'm not doing too well, I had to cheat on excercise one (make a series
of integers) by looking at the
Also my .emacs is pasted here:
Just copy from wiki...
;; clojure mode
(add-to-list 'load-path /usr/local/clojure-mode)
(require 'clojure-auto)
;; Slime
(add-to-list 'load-path /usr/local/slime)
(require 'slime)
(slime-setup)
;; clojure swank
(setq swank-clojure-jar-path
This is related to the thread titled Proxying in Clojure. I've spent
a lot of time studying the code in this snake example and have some
observations I'd like to share.
First off, obviously I care about the future of Clojure or I wouldn't
have spent the last six weeks or so trying to learn it.
On Dec 28, 8:13 pm, Mark Volkmann r.mark.volkm...@gmail.com wrote:
This is related to the thread titled Proxying in Clojure. I've spent
a lot of time studying the code in this snake example and have some
observations I'd like to share.
First off, obviously I care about the future of
On Sun, Dec 28, 2008 at 9:15 PM, Rich Hickey richhic...@gmail.com wrote:
On Dec 28, 8:13 pm, Mark Volkmann r.mark.volkm...@gmail.com wrote:
This is related to the thread titled Proxying in Clojure. I've spent
a lot of time studying the code in this snake example and have some
observations
Yes, but I think maybe there is a bug in Clojure that causes the first
case to work when it should give a syntax error. If it is not a bug
I do not understand why it ignores the expression.
It's not a bug in Clojure because Clojure doesn't really have syntax in
the way that you seem to be
Following my recent adventure with words ranking, here's the parallel
version:
(use 'clojure.contrib.duck-streams)
(defn top-words-core [s]
(reduce #(assoc %1 %2 (inc (%1 %2 0))) {}
(re-seq #\w+
(.toLowerCase s
(defn format-words [words]
(apply
Thanks for that - I'm all up to date now. The bad news is that it
didn't seem to affect my problem at all.
On Dec 28, 6:58 pm, Michael Wood esiot...@gmail.com wrote:
The current version of Clojure is 1185. Clojure was recently moved to
Google Code:
The db configuration isn't reasonable at the moment. You can run
clj_record/test/main.clj as a script but not load it from the REPL.
Let me see if I can get it to work both ways and push an update.
On Sun, Dec 28, 2008 at 6:28 PM, Brian Doyle brianpdo...@gmail.com wrote:
Having used Rails
Ok, please pull the latest and try again.
git clone git://github.com/duelinmarkers/clj-record.git
The problem was due to something I've seen a couple other messages
about: When running a file as a script, it starts out in the
clojure.core namespace. I was doing (def db {...}) before any (ns ...)
On Sun, Dec 28, 2008 at 9:22 AM, Boyd Brown boy...@gmail.com wrote:
Hello. I can't seem to find 'spit'.
'spit' is in clojure-contrib:
http://code.google.com/p/clojure-contrib/source/browse/trunk/src/clojure/contrib/duck_streams.clj?r=325#177
It's inclusion in clojure.core is planned (search
On Thu, Jul 31, 2008 at 02:01:08PM -0700, Rich Hickey wrote:
On Jul 31, 11:43 am, Stefan Ring stefan...@gmail.com wrote:
Thanks a lot. Your change makes the CACAO verifier happy but I think
you should revert it.
The instruction in question is actually invokeinterface, not
On Dec 28, 10:49 pm, Peter Collingbourne pe...@pcc.me.uk wrote:
On Thu, Jul 31, 2008 at 02:01:08PM -0700, Rich Hickey wrote:
On Jul 31, 11:43 am, Stefan Ring stefan...@gmail.com wrote:
Thanks a lot. Your change makes the CACAO verifier happy but I think
you should revert it.
The
On Dec 29, 12:44 am, Mark Engelberg mark.engelb...@gmail.com
wrote:
So I understand that we're supposed to discuss ideas here to try to
gain mindshare which is why last week I brought up the issue with
Clojure missing mod (which works differently from rem on negative
numbers). So really,
On Sun, Dec 28, 2008 at 10:50 PM, Piotr 'Qertoip' Włodarek
qert...@gmail.com wrote:
Following my recent adventure with words ranking, here's the parallel
version:
(use 'clojure.contrib.duck-streams)
Thanks for including your 'use' line -- that's so much better than
leaving it implied.
Speaking for myself, as the author of the original Snake example, I
had no intention of converting developers to Clojure, or of producing
instructive or readable code, with that snippet.
While I agree with some of your critique, I do think it is misplaced.
The aim of this particular exercise was
I suppose then that we would also need div. Using GHCi here:
Prelude (-3) `div` 2
-2
Prelude (-3) `quot` 2
-1
On Dec 22, 7:04 am, Mark Engelberg mark.engelb...@gmail.com wrote:
Anyone know why there is no modulo or mod function in Clojure's core?
I know there is a rem function, but that's
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