David, that seems to work. I think I can achieve my objectives with
this strategy.
However, I must admit, I find it rather unsettling that collections of
functions written inside of namespaces are fundamentally less
composable than those that are not. It means that to remain
extensible, I need
On 17.05.2009, at 21:24, Mark Engelberg wrote:
For many years, my primary language for doing these sorts of programs
has been Python. In my first pass, I just have a bunch of functions
in a file with global variables at the top. For exploring simple
changes, I can just import a file and
BTW, for those of you interested in reading academic papers about
modules in functional programming langs, I found this list of
articles:
http://www.readscheme.org/modules/
I remember reading about PLT Scheme's units several years ago, and I
think it's pretty much what I'm looking for, with the
On 18.05.2009, at 08:05, Mark Engelberg wrote:
David, that seems to work. I think I can achieve my objectives with
this strategy.
David provided a much better implementation of the idea that I had
for this. I hadn't thought of the load function.
However, I must admit, I find it rather
I've submitted the Maven bundle for Clojure 1.0.0 to
http://jira.codehaus.org/browse/MAVENUPLOAD-2464. Processing the request
might take a couple of days.
Once the bundle is uploaded to Central, one of the following two
snippets can be used to declare a dependency to Clojure:
!-- Clojure with
Hi,
Am 17.05.2009 um 22:28 schrieb Emeka:
(def c (.. Dispatch (call ws Cells 1 1) (toDispatch)))
Here you retrieve the actual cell.
If I have file hello.xls already and I have say 'Emeka at Cell 1
1, using the above line could I get 'Emeka .
Yes. Instead of using Add to create a new
On Sun, May 17, 2009 at 11:48 PM, Konrad Hinsen
konrad.hin...@laposte.net wrote:
It's the approach of cloning and
mutating something that smells of quick and dirty, although I
agree it is quite convenient in the prototyping phase.
I disagree that incremental extension of a module is a quick
The problem is likely in the MySQL's JDBC driver. Some retrieve the
entire result set from the database on statement execute while others
are more true to the notion of a remote database cursor.
The JDBC API has a workaround for this problem: Use
Statement.setFetchSize(int) to limit the number
... signs a contributor agreement. If he wants to create his own
version of the module for his own personal use, in which he swaps out
my function for his faster one, there appears to be no good way to do
this, short of copying my entire file, commenting out my function, ...
I think
On Mon, May 18, 2009 at 1:17 AM, Adrian Cuthbertson
adrian.cuthbert...@gmail.com wrote:
(alter-var-root (var say-grav) (fn [_] (fn [x] (prn my-version-grav: x
But this only works if you only want one variation, and you no longer
care about the original version, right?. If you want to
On May 18, 2009, at 9:47, Mark Engelberg wrote:
On Sun, May 17, 2009 at 11:48 PM, Konrad Hinsen
konrad.hin...@laposte.net wrote:
It's the approach of cloning and
mutating something that smells of quick and dirty, although I
agree it is quite convenient in the prototyping phase.
I
On Mon, May 18, 2009 at 9:47 AM, Mark Engelberg
mark.engelb...@gmail.com wrote:
On Sun, May 17, 2009 at 11:48 PM, Konrad Hinsen
konrad.hin...@laposte.net wrote:
It's the approach of cloning and
mutating something that smells of quick and dirty, although I
agree it is quite convenient in
Hi,
Am 18.05.2009 um 09:47 schrieb Mark Engelberg:
As an example, I authored clojure.contrib.math. Someone came up with
a slightly faster algorithm for one of the functions (which is used in
turn by other functions in the library), but I can't include it unless
he signs a contributor
On Mon, May 18, 2009 at 11:07 AM, Michael Wood esiot...@gmail.com wrote:
On Mon, May 18, 2009 at 9:47 AM, Mark Engelberg
mark.engelb...@gmail.com wrote:
On Sun, May 17, 2009 at 11:48 PM, Konrad Hinsen
konrad.hin...@laposte.net wrote:
It's the approach of cloning and
mutating something
On Sun, May 17, 2009 at 1:15 PM, Konrad Hinsen konrad.hin...@laposte.netwrote:
On 16.05.2009, at 15:53, aperotte wrote:
Yes Anand, I'm worried about that. What I think the solution should
be is to allow mutability in the implementation of algorithms in the
java back end for the reasons
What's wrong with this:
user= (ns test (:use [clojure.contrib.math :exclude (lcm)]))
nil
test= (sqrt 2)
1.4142135623730951
test= (lcm 3 6)
java.lang.Exception: Unable to resolve symbol: lcm in this context
(NO_SOURCE_FILE:3)
test= (defn lcm [a b] 1)
#'test/lcm
test= (lcm 3 6)
1
On May 18, 2009, at 11:21, Anand Patil wrote:
Huh, sounds like just the thing. Security is going to be especially
difficult in Clojure, though. For example, say I stuck the array
into a ref from within the monad, then carried on overwriting it. A
consumer who gets the array out of the
On Mon, May 18, 2009 at 11:29 AM, Mark Reid mark.r...@gmail.com wrote:
...
test= (lcm 4 6)
24
Maybe a variant of ns could be written that allows the overriding of
specific functions? e.g.,
I know I keep plugging this - sorry - but it just keeps surfacing as a solution;
(lcm 4 6)
12
On Mon, May 18, 2009 at 10:54 AM, Konrad Hinsen
konrad.hin...@laposte.netwrote:
On May 18, 2009, at 11:21, Anand Patil wrote:
Huh, sounds like just the thing. Security is going to be especially
difficult in Clojure, though. For example, say I stuck the array
into a ref from within the
On May 18, 2009, at 11:58, Adrian Cuthbertson wrote:
I know I keep plugging this - sorry - but it just keeps surfacing
as a solution;
(lcm 4 6)
12
(binding [clojure.contrib.math/gcd (fn [a b] 1)] (lcm 4 6))
24
Such a use of binding will lead to bad surprises as soon as you use
it
Aha! Thank you for clarifying that. Reinforces your point on
monkey-patching :). I will read your blog post with careful attention.
Adrian.
On Mon, May 18, 2009 at 12:42 PM, Konrad Hinsen
konrad.hin...@laposte.net wrote:
On May 18, 2009, at 11:58, Adrian Cuthbertson wrote:
I know I keep
2009/5/18 Konrad Hinsen konrad.hin...@laposte.net:
On May 18, 2009, at 11:58, Adrian Cuthbertson wrote:
I know I keep plugging this - sorry - but it just keeps surfacing
as a solution;
(lcm 4 6)
12
(binding [clojure.contrib.math/gcd (fn [a b] 1)] (lcm 4 6))
24
Such a use of binding
Hi,
Am 18.05.2009 um 12:42 schrieb Konrad Hinsen:
Such a use of binding will lead to bad surprises as soon as you use
it with lazy sequences:
(map #(lcm % 6) (range 6))
- (0 6 6 6 12 30)
(binding [clojure.contrib.math/gcd (fn [a b] 1)]
(map #(lcm % 6) (range 6)))
- (0 6 6 6 12 30)
You
Hi,
The most modular I can think of right now is just about creating a
gravity type and using multimethods for all your functions.
This way you would have dynamic resolution of methods that do not work
with precompiled fns.
2009/5/17 Mark Engelberg mark.engelb...@gmail.com:
Thanks for your
On May 17, 2:19 pm, Paul Mooser taron...@gmail.com wrote:
Is anyone having contrary results, or does anyone know of a way to
call add-classpath and have it actually work with an up-to-date trunk
build of clojure ? This basically breaks my common usage of clojure,
because it requires me to
I'll be doing two sessions involving Clojure at JavaOne this June. One
is a traditional talk (TS-4164), the other is as a participant in the
Script Bowl 2009: A Scripting Languages Shootout (PAN-5348).
The 'script' bowl is a friendly competition, basically a place to show
off your language and
I can only speak from my experience, but the thing that really got my
attention was the idea of 'code as data'. In particular, for me, looking
through Koza's Genetic Programming book blew my mind. It would be cool to
come up with a nice GP demo.
On Mon, May 18, 2009 at 8:36 AM, Rich Hickey
On Mon, May 18, 2009 at 7:36 AM, Rich Hickey richhic...@gmail.com wrote:
I'll be doing two sessions involving Clojure at JavaOne this June. One
is a traditional talk (TS-4164), the other is as a participant in the
Script Bowl 2009: A Scripting Languages Shootout (PAN-5348).
The 'script'
Thanks for the information Konrad. I haven't had a chance to take a
close look at monads, but you've bumped it much higher on my list of
things to look at.
I was going to attempt to implement the data structure in clojure
initially, but I wanted to make it as close a cousin to the other data
As a general idea, I would say :
specific to lisp:
the possibility to get rid of boiler plate code, such as the one
involved in each and every (re)implementation of some GOF design
patterns.
This could be either a demonstration of the power of higher order
functions or macros (the first with
2009/5/18 Mark Volkmann r.mark.volkm...@gmail.com:
On Mon, May 18, 2009 at 7:36 AM, Rich Hickey richhic...@gmail.com wrote:
I'll be doing two sessions involving Clojure at JavaOne this June. One
is a traditional talk (TS-4164), the other is as a participant in the
Script Bowl 2009: A
I believe it was the presentation you gave on the ants simulation, where you
updated the program while it was running. I'm not sure if the other
languages in the shootout can do that, but I thought that was pretty
awesome.
I think a display of building an application while it's running in front
On May 18, 2009, at 15:10, aperotte wrote:
I was going to attempt to implement the data structure in clojure
initially, but I wanted to make it as close a cousin to the other data
structures as possible. I also wanted to easily integrate the use of
the data structure with other math
Whatever you chose, you probably ought to show its source with an IDE
(whichever you chose: NetBeans. Eclipse, IntelliJ) but should probably
forget about emacs: many (most?) Java developers won't even consider
anything that isn't at least partially integrated within some IDE.
Not sure how much
I agree with John. For certain applications, the ability to modify
the code while it is running is very useful.
Many language comparisons turn into syntax comparisons. Clojure has
enough interesting concepts (concurrency model, code as data, macros)
that it should be made to stand out.
On May
Hi all.
One of the most important aspects which I would like to be emphasized is the
ad-hoc interoperability with Java, such as invocation of Java classes and
methods, proxies and compilation to Java class-files.
BTW, I will be at JavaOne staying most part of time on JetBrains booth, so
if
On May 18, 2009, at 9:23 AM, Laurent PETIT wrote:
2009/5/18 Mark Volkmann r.mark.volkm...@gmail.com:
On Mon, May 18, 2009 at 7:36 AM, Rich Hickey richhic...@gmail.com
wrote:
I'll be doing two sessions involving Clojure at JavaOne this June.
One
is a traditional talk (TS-4164), the
Hello, Asbjørn.
For now IntelliJ support of Clojure is rather editor-oriented than
REPL-oriented. For now you may only run REPL on some of your files. REPL
History and other support is now under development and it will be added in
the next release.
With best regards,
Ilya
2009/5/15 Asbjørn
Well, the ant demo does show java interoperability (the whole graphics
bit).
You could start with a world with the empty square, and a filled
square, start
with one type of ant that is just lugging the food from the filled to
the empty
square. This shows off agents.
Have four numbers being
Well, the ant demo does show java interoperability (the whole graphics
bit).
You could start with a world with the empty square, and a filled
square, start
with one type of ant that is just lugging the food from the filled to
the empty
square. This shows off agents.
Have four numbers being
Well, the ant demo does show java interoperability (the whole
graphics bit).
You could start with a world with the empty square, and a filled
square, start with one type of ant that is just lugging the food
from the filled to the empty square. This shows off agents.
Have four numbers being
On Mon, May 18, 2009 at 4:23 AM, Laurent PETIT laurent.pe...@gmail.com wrote:
The most modular I can think of right now is just about creating a
gravity type and using multimethods for all your functions.
This way you would have dynamic resolution of methods that do not work
with precompiled
Thanks for the reply, Rich - I'll have to see if I can find another
way to get this to work.
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First things first:
swank doesn't load and slime can't connect to the *inferior-lisp*
running clojure
I am missing something obvious, please advice.
..this is what I did:
Starting up cygwin, I prepare to install clojure.
mkdir -p ~/lisp/clj
cd ~/lisp/clj
git clone
Thanks for the reply, Rich.
I'll have to see if I can find another way to make this work, but it
has been really nice so far having the ability to add things to the
classpath that weren't specified at launch time.
Most of what I am doing is in fact at a REPL, because I have clojure
embedded
On Mon, May 18, 2009 at 2:16 AM, Meikel Brandmeyer m...@kotka.de wrote:
If that is true, you should maybe consider some glue.
/- Analysis
Glue -- Solve
\- Create
The Glue part combines/uses the different modules. There you
could change parameters easily with binding, swap in
klang karstenl...@gmail.com writes:
First things first:
swank doesn't load and slime can't connect to the *inferior-lisp*
running clojure
I am missing something obvious, please advice.
It's not your fault; it looks like the latest Clojure 1.1 snapshot is
not compatible with swank-clojure.
I just happened to be setting up emacs an a new Ubuntu install today. I
think it might have something to do with 'add-classpath. The
swank-clojure-init function is trying to add the swank-clojure directory to
the classpath, but the 'require still fails when starting up the clojure
REPL.
I added
On May 16, 12:58 am, Glen Stampoultzis gst...@gmail.com wrote:
The other problem I have is with the current working directory. The swank
process seems to use my home directory as the current working
directory regardless of what the current working directory of emacs
currently is. Is there
That did the trick!
Thanks!
Hopefully, this will be a help for other new clojure/emacs/slime/swank
users!
/klang
On May 18, 7:02 pm, Phil Hagelberg p...@hagelb.org wrote:
klang karstenl...@gmail.com writes:
First things first:
swank doesn't load and slime can't connect to the
Using my existing definitions
(setq clojure-src-root ~/lisp/clj)
(setq swank-clojure-extra-classpaths
(cons (concat clojure-src-root /swank-clojure)
(when (file-directory-p ~/.clojure)
(directory-files ~/.clojure t .jar$
This does not work, with origin/master,
I think time is the issue here. The Ant code may be too involved to
describe in the time allotted. I do think it's important though to
describe the use of Refs and STM. To me they are a very important
feature of Clojure.
On Mon, May 18, 2009 at 10:47 AM, bOR_ boris.sch...@gmail.com wrote:
On Mon, May 18, 2009 at 8:54 PM, Mark Volkmann
r.mark.volkm...@gmail.com wrote:
I think time is the issue here. The Ant code may be too involved to
describe in the time allotted. I do think it's important though to
describe the use of Refs and STM. To me they are a very important
feature of
For me, persistent vectors was the killer feature that drew me to
Clojure. Don't know how to convey the value of that in 4 minutes,
though.
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On Mon, May 18, 2009 at 2:36 PM, Michael Wood esiot...@gmail.com wrote:
On Mon, May 18, 2009 at 8:54 PM, Mark Volkmann
r.mark.volkm...@gmail.com wrote:
I think time is the issue here. The Ant code may be too involved to
describe in the time allotted. I do think it's important though to
When working through Part 3 of the monad tutorial [1], I am seeing the
following behavior for fib-trace:
(fib-trace 3)
= [2 [[[1 1] [[[0 0] []] [[2 1] [[[1 1] [
According to the tutorial, it should be:
(fib-trace 3)
= [2 [[1 1] [0 0] [2 1] [1 1]]]
Am I doing something wrong?
It looks that there is a bug in int-array, long-array, float-array and
double-array when creating an array using an empty sequence.
Doc:
clojure.core/int-array
([size-or-seq] [size init-val-or-seq])
Creates an array of ints
This works:
user= (int-array 0)
#int[] [...@11978b
user= (vec
Sorry, forgot to mention: Found when testing Clojure 1.0.0.
Frantisek
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I want to create a function that takes a variable of an error-kit
error type and inserts it into a handle statement, but when I try, I
get a strange error. What does the error mean, and is there a way to
pass a variable error type into a handle statement without resorting
to macros?
Clojure
On Mon, May 18, 2009 at 4:38 PM, samppi rbysam...@gmail.com wrote:
I want to create a function that takes a variable of an error-kit
error type and inserts it into a handle statement, but when I try, I
get a strange error. What does the error mean, and is there a way to
pass a variable error
i think destructuring is awesome, and loop-recur loop-recur is so handy
in not having to have the public version of a function (entry point) versus
the recursive inner version that often has extra parameters that the user
shouldn't have to worry about.
other ideas:
closures as light-weight
I'd love for that to happen—either error-kit support in test-is or
test-is support in error-kit. clojure.contrib libraries should be able
to use each other with no worries, since they'll be installed together
just about always.
On May 17, 12:52 am, Dan Larkin d...@danlarkin.org wrote:
Sorry for
I was attempting to add an additional remote javadoc source for
'javax.servlet.', but found that the entry for 'javax.' wasn't
allowing the domain to be searched.
Someone in #clojure mentioned changing line 70 of clojure.contrib.repl-
utils/javadoc.clj to return a rseq of *remote-javadocs*.
In
On May 18, 2009, at 4:10 AM, Mark Addleman wrote:
The problem is likely in the MySQL's JDBC driver. Some retrieve the
entire result set from the database on statement execute while others
are more true to the notion of a remote database cursor.
The JDBC API has a workaround for this problem:
+1 for showing the Ant demo and modifying it while it's running.
Emphasize how easy it is to get RELIABLE concurrency using agents/STM.
As Steve Jobs has long known, eye candy counts, and Ants is an eye
candy way of seeing concurrency in action.
I would also keep a second REPL open and test out
On May 17, 3:24 pm, Mark Engelberg mark.engelb...@gmail.com wrote:
Thanks for your questions. I'll try to explain better.
First, I'll explain that my line of work is to build tools to generate
puzzles. I often have a module which generates the puzzles through
various random processes,
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