On Thu, Feb 5, 2009 at 7:33 AM, Christophe Grand wrote:
>
> Chouser a écrit :
>> (defn foobar [#^#=(array-of MyClass) myarray])
>>
>> Again, I apologize for even suggesting this
> Wow what a clever (ab)use of reader macros!
This is where a raptor jumps in from the left and eats someone :)
>
> -
Hi,
are any clojure developers going to FOSDEM, next week-end in Brussels
(Belgium)?
It would be cool to meet there. (I'm a complete newbie at clojure, but
that would make it the more interesting for me to meet other clojure
developers:-)
Cheers
Raphaël
--~--~-~--~~~--
I've got the same problem as srolls24 and CuppoJava on Windows XP,
using Emacs 23
and versions of Clojure, Slime and Swank fetched today.
Also, when starting Slime, it opens a connection to *inferior-lisp*,
but keeps polling
for Swank until I hit return in the inferior-lisp buffer. After that,
i
On Feb 1, 7:22 pm, David Nolen wrote:
> I've changed the name of my project since that was a joke
> anyway.http://github.com/swannodette/spinoza/tree/master
>
> Spinoza isn't just for people who want object oriented behaviors. It's also
> for anyone who plans on instantiating many structs. S
On Feb 4, 5:22 pm, John Fries wrote:
> Guaranteed-termination is very desirable. However, you can have guaranteed
> termination with an open-world assumption just as well. And I think an
> open-world assumption does a better job of mimicking human reasoning.
>
Do you have a specific reasoner/
On Feb 4, 10:36 pm, Conrad wrote:
> It is useful to build a map from a list of keys and a value generator
> function. Of Course, such a function is easy to write:
>
> (defn genmap [keys fun]
> (zipmap keys (map fun keys)))
>
> In fact, it seems so useful that it must be in the standard API
>
Hello,
Please accept my apologizes if the following remarks/questions sound stupid
or silly to you, but I can't resist ask/remark in order to gain a better
understanding of what you meant when writing the following :
2009/2/5 mikel
> On Feb 1, 7:22 pm, David Nolen wrote:
> >
> > (time (dotime
I frequently use a more general version of this function that reduces
a seq to a map, mapping each element in the seq to a [key value] pair
for the map. I use this in several different libs:
(defn mash
"Reduce a seq-able to a map. The given fn should return a 2-element tuple
representing a ke
Test case:
---
(add-classpath "file:///home/user/.maven/repository/commons-io/jars/
commons-io-1.4.jar")
(ns import-testcase
(:refer-clojure)
(:import (org.apache.commons.io FileUtils)))
---
Loading code above results in java.lang.ClassNotFoundException. This
is beacuse clojure.core/impor
On Feb 4, 8:25 am, H Durer wrote:
> 2009/2/3 AndrewC. :
> [...]
>
> > The people at Scheme UK have (very) occasional meetings in Shoreditch.
> > We could join up with them and get a few more people, perhaps.
>
> >http://upcoming.yahoo.com/group/4654/
>
> > Perhaps someone could do an introducto
for simplicity, first tried to create two dimentional array(vector) of
numbers.
On Feb 5, 1:58 am, Emeka wrote:
> Where did 'ref' go in your own implementation?
>
> Emeka
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You received this message because you are subscribed to the Google Gro
Hello Stuart and all!
There is something strange going on with (is (thrown? ...)) form:
user=> (use 'clojure.contrib.test-is)
nil
user=> (is (= 2 2))
true
; this works
user=> (/ 1 0)
java.lang.ArithmeticException: Divide by zero (NO_SOURCE_FILE:0)
user=> (is (thrown? ArithmeticException (/ 1 0))
Another option would be to do a session at one of the erlounges at Erlang
Traing and Consulting.The only issue is that someone would have to do a
presentation for the erlang people there and I, for one, am not
knowledgeable enough to present on Clojure yet.
Tom
2009/2/3 AndrewC.
>
> On Feb 3, 1
On Thu, Feb 5, 2009 at 4:52 AM, David wrote:
>
> I've got the same problem as srolls24 and CuppoJava on Windows XP,
> using Emacs 23
> and versions of Clojure, Slime and Swank fetched today.
>
> Also, when starting Slime, it opens a connection to *inferior-lisp*,
> but keeps polling
> for Swank u
>From a quick glance, it looks like the exceptions that are *not* being
caught are those generated by the compiler, who can't understand the code.
test-is can't find those because the code doesn't even run in that case.
On Thu, Feb 5, 2009 at 8:33 AM, Frantisek Sodomka wrote:
> Hello Stuart and
user=> (deftest test-if (is (thrown? Exception (if
java.lang.Exception: Too few arguments to if (NO_SOURCE_FILE:35)
user=> (deftest test-div (is (thrown? ArithmeticException (/ 1 0
#'user/test-div
Yes, looks like it. Compile-time and run-time exceptions - will have
to remember that ;-)
> 2) The current directory (parent of gui2) is in the class-path -cp
> option when launching Clojure
Updated the guide with note about CLASSPATH - basicaly, I have current
directory (".") listed in it.
Also, replaced quote character with "quote" word in the code.
Updated version so far only her
On Thu, Jan 29, 2009 at 10:50 AM, Shawn Hoover wrote:
> Heartland Clojure Users,
>
> I'm giving a presentation on Clojure next month for the Indianapolis ALT.NET
> group. The talk is aimed at .NET programmers, introducing Clojure and
> showing them why they might care.
>
> More description and me
On Feb 5, 9:28 am, Jeffrey Straszheim
wrote:
> From a quick glance, it looks like the exceptions that are *not* being
> caught are those generated by the compiler, who can't understand the code.
> test-is can't find those because the code doesn't even run in that case.
Yes. In the current impl
On Feb 5, 9:59 am, Frantisek Sodomka wrote:
> PS: I still wonder why REPL has that "(" char after exception. Bug?
It's the lazy sequence thing again. The REPL starts printing the
sequence, beginning with the "(", before the exception gets thrown.
Here's a more obvious example:
user=> (map #(/
Laziness is sometimes confusing :)
On Thu, Feb 5, 2009 at 11:02 AM, Stuart Sierra
wrote:
>
> On Feb 5, 9:59 am, Frantisek Sodomka wrote:
> > PS: I still wonder why REPL has that "(" char after exception. Bug?
>
> It's the lazy sequence thing again. The REPL starts printing the
> sequence, begin
Raphaël,
I will be there presenting the open source meta web project ShiftSpace (
http://shiftspace.org) at the art festival Artefact (
http://www.artefact-festival.be/). Unfortunately this project isn't really
Clojure related, it's primarily written in Javascript :) However, two people
(including
Yes. I can make a strong endorsement for Kodkod, a Java-based relational
model finder.
http://alloy.mit.edu/kodkod/
I used it fairly extensively last year to solve scheduling problems, and
I've corresponded with its creator.
One problem with Datalog-style reasoners is that, because they want to
g
Hello, New York! If you're interested, I'm presenting at the New York
Hadoop User Group [1] next Tuesday, February 10, at 6:30.
I'll talk about using Clojure with Hadoop, among other things.
[1] http://www.meetup.com/Hadoop-NYC/
-Stuart Sierra
--~--~-~--~~~---~--~--
I've been working on a def-casemacro macro and I've run into some trouble.
The macro defines smaller macros based on a supplied name and test function.
Each one evaluates the first argument and then uses the test to compare the
result to each supplied case, evaluating whatever returns true or raisi
On Wed, Feb 4, 2009 at 4:36 PM, chris wrote:
[snip]
> My slime setup currently fails completely on windows, however. The
> slime repl never starts; is there a way to get slime to dump all of
> its communication (both ways, not just sending) to a file?
Ditto, I'm still busted on Windows with the
Hi,
first things first: what you want to do is available as condp in
the core library of Clojure. That said, here some things I
noticed in your macro.
You should not capture variables in your macros. That's bad style and
might lead to clashes of names. Clojure provides the foo# notation
to gener
On Feb 5, 1:04 pm, Nathanael Cunningham wrote:
> I've been working on a def-casemacro macro and I've run into some trouble.
> The macro defines smaller macros based on a supplied name and test function.
> Each one evaluates the first argument and then uses the test to compare the
> result to each
I haven't seen a clear argument about the classpath variable one way
or another. I also haven't figured out an elegant way to deal with
it.
I have no problem running a shell script from a terminal I want to
develop with to setup classpath to be exactly what I expect it to be
on a unix system. O
Do you have slides for those of us who cannot attend?
On Feb 5, 12:33 pm, Stuart Sierra wrote:
> Hello, New York! If you're interested, I'm presenting at the New York
> Hadoop User Group [1] next Tuesday, February 10, at 6:30.
>
> I'll talk about using Clojure with Hadoop, among other things.
>
A protocol is a level of abstraction above an interface.
Java (and c++) virtual dispatch is one implementation of a meta-object
protocol, where dispatch is dynamic upon the first argument to the
function and object derivation means a certain order of function
overriding, etc.
Most likely mikel i
Are there any existing clojure users in the Denver/Boulder area (other
than me)?.
Chris
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To post to this group, send email to clojure@googlegroups.com
T
I live in southeast Denver and have been doing some Clojure on my own for a
few months now.
On Thu, Feb 5, 2009 at 12:39 PM, chris wrote:
>
> Are there any existing clojure users in the Denver/Boulder area (other
> than me)?.
>
> Chris
> >
>
--~--~-~--~~~---~--~~
Yup, that solves it.
A while back the blah# didn't support working in nested back ticks. I
hadn't realized they fixed it. Or for that matter added condp :)
Thanks!
On Feb 5, 1:42 pm, Meikel Brandmeyer wrote:
> Hi,
>
> first things first: what you want to do is available as condp in
> the core l
Is there a reason the assert-args macro is private to core? It seems like
it would be generally useful.
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To post to this group, send email to clojure@go
I realize this comes a day late since the meeting just happened, but
after seeing all these local group threads, I thought I'd mention that
the Seattle Functional Group meets every month or so at various
locations around Seattle:
SeaFunc is Seattle. SeaFunc is functional. Functional language.
For those who are interested in Clojure performance, I've updated my
flocking example from earlier, which uses Roland's excellent Processing
library.
http://github.com/swannodette/clojure-stuff/blob/80035bb3b76c21d39d6f8011e9a27aa1116b/flocking.clj
It is twice as fast as the previous version a
Thanks for the pointer to Kodkod - it looks very interesting.
I wonder if we aren't talking apples and oranges though. Datalog may
be a basic reasoner, but it's a simple recursive query language for
data. Can you even get all results out of a SAT solver or do they stop
when satisfiable?
It's for
http://bitbucket.org/shoover/clojure-box-swank-clojuremq/src/11bec919b978/hack-repl-hang
This might fix it for your windows box.
Check this thread:
http://groups.google.com/group/clojure/browse_thread/thread/6c195c35ae9a7eb8/29dec28f8e8fafd5?lnk=gst&q=windows+slime+hang#29dec28f8e8fafd5
Chris
>
> I don't argue that this model is better than what you're doing with
> Spinoza, but for years (see
> http://www.mactech.com/articles/frameworks/8_2/Protocol_Evins.html
> from 1994) I've wanted an object model that explicitly separates
> structure from protocol, and since I partially built one in
(isa? [:spinoza-example-one/circle] [:spinoza/object]) ;; true
Just to note, the above shows that protocols could have their own
inheritance chain. This is insanely powerful and could be implemented very
quickly.
--~--~-~--~~~---~--~~
You received this message bec
There is no reason to have just one option.
On Thu, Feb 5, 2009 at 3:59 PM, Rich Hickey wrote:
>
> Thanks for the pointer to Kodkod - it looks very interesting.
>
> I wonder if we aren't talking apples and oranges though. Datalog may
> be a basic reasoner, but it's a simple recursive query langu
On Feb 5, 6:36 am, Laurent PETIT wrote:
> Doesn't that sound like multifunctions whose dispatching is tied to the
> type ('model') of a 'thing' ?
Yes, but see below.
> Once again, does'nt this correspond to the introduction of the interface
> concept in java ?
No. I think the article I li
On Feb 5, 3:01 pm, David Nolen wrote:
> > I don't argue that this model is better than what you're doing with
> > Spinoza, but for years (see
> >http://www.mactech.com/articles/frameworks/8_2/Protocol_Evins.html
> > from 1994) I've wanted an object model that explicitly separates
> > structure
Is there a pretty printer out there for Clojure anywhere? I'm crying
now without one.
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To
I've managed to get to startup time down from 12 seconds to 7 on the
emulator and hope get it below 4 seconds tomorrow. A lot of time is
spend in LispReader when the core constants are initialized. I've
altered the compiler to emit type specific code for the basic cases,
thus bypassing LispReade
I often need to call a java method on each element in a collection. I
didn't find anything on the group, so I wrote a macro.
(defmacro map-method [method coll & args]
"Calls the given method on each item in the collection."
`(map (fn [x#] (. x# ~@(if args
(concat (li
I'm about half-way through creating one at
http://github.com/tomfaulhaber/cl-format/tree/pprint
It should be ready in a week or two, depending on how much work and
family intrude on my hacking.
Any particular features folks are interested in?
Tom
On Feb 5, 3:59 pm, Jeffrey Straszheim
wrote:
I would like it if it could handle sets and hashes well, including nested
sets of hashes (relations in Clojure speak). So we'd get something like:
#{
{ :name "Fred"
:department :accounting }
{ :name "Sally"
:department :engineering }
{ :name "Dinesh"
:department :man
Hello,
Really naive questions concerning the features :
Will it be able to work on large chunks of code, such as an entire file ?
Will it have to run on the runtime of the pretty printed code, or will it be
able to pretty print any code given as a String ?
How would it handle the case of ncorrect
Would memfn not work for you?
http://clojure.org/java_interop
On Thu, Feb 5, 2009 at 7:24 PM, kyle smith wrote:
>
> I often need to call a java method on each element in a collection. I
> didn't find anything on the group, so I wrote a macro.
>
> (defmacro map-method [method coll & args]
> "
>
> I'm not looking for a way to statically define protocols in which
> classes participate. Consider an example similar to the one I gave in
> my reply to Laurent:
Static defining of anything is just a matter of chose, especially in
Clojure. For example in Spinoza you have pose-as which changes
Or anonymous function literals?
user=> (map #(.length %) ["mary" "had" "a" "little" "lamb"])
(4 3 1 6 4)
user=> (map #(.indexOf % (int \a)) ["mary" "had" "a" "little" "lamb"])
(1 1 0 -1 1)
On Feb 5, 5:05 pm, Jeffrey Straszheim
wrote:
> Would memfn not work for you?
>
> http://clojure.org/java_
>
> The fly in the ointment is: what happens if both
> protocols specialize frob? Then Clojure will complain that it can't
> tell which method to call. In order to resolve that problem, we must
> use prefer-method to declare that one protocol or the other is
> preferred.
>
> But what if I want to
Yup, it will handle all Clojure data types in arbitrary nesting. It
will be customizable if you don't like the defaults (though that might
not be documented or finalized right away).
With the cl-format stuff (and this is a branch of the same project
since it shares a bunch of code and I didn't wa
Of course those would work, but I got sick of typing them over and
over.
(map-method length ["mary" "had" "a" "little" "lamb"])
(map-method indexOf ["mary" "had" "a" "little" "lamb"] (int \a))
I find typing # and % repetitive, so this is just a little syntactic
sugar.
--~--~-~--~~---
On Feb 5, 7:12 pm, David Nolen wrote:
> > I'm not looking for a way to statically define protocols in which
> > classes participate. Consider an example similar to the one I gave in
> > my reply to Laurent:
>
> Static defining of anything is just a matter of chose, especially in
> Clojure. For
On Feb 5, 7:44 pm, David Nolen wrote:
> > The fly in the ointment is: what happens if both
> > protocols specialize frob? Then Clojure will complain that it can't
> > tell which method to call. In order to resolve that problem, we must
> > use prefer-method to declare that one protocol or the
On Feb 5, 2:12 pm, Vincent Foley wrote:
> Do you have slides for those of us who cannot attend?
I'll post a link when I finish them. :) But my slides tend to be
images, not outlines. I don't think this meetup is recorded.
-Stuart Sierra
--~--~-~--~~~---~--~~
You
Please hurry :)
But seriously, that sounds great!
On Thu, Feb 5, 2009 at 8:48 PM, Tom Faulhaber wrote:
>
> Yup, it will handle all Clojure data types in arbitrary nesting. It
> will be customizable if you don't like the defaults (though that might
> not be documented or finalized right away).
>
Good point, and a good reason for a macro.
On Thu, Feb 5, 2009 at 8:50 PM, kyle smith wrote:
>
> Of course those would work, but I got sick of typing them over and
> over.
>
> (map-method length ["mary" "had" "a" "little" "lamb"])
> (map-method indexOf ["mary" "had" "a" "little" "lamb"] (int \a)
Vlad, thanks for updating the guide. I've saved the new version.
Tim, thanks for the ideas. I've tried both and both work well.
It did get me thinking that it would be great to have a way to
interrogate an open gui app from the command line, or perhaps, from a
separate area in the app itself (s
> It did get me thinking that it would be great to have a way to
> interrogate an open gui app from the command line, or perhaps, from a
> separate area in the app itself (say, a special "debugging" tab in the
> main window). Having a standard way to alter the app while it's
> running would be som
On Jan 6, 10:06 pm, Allen Rohner wrote:
> I had to revisit my test stubbing/expectation code after the recent
> changes to test-is. The good news is, because of the excellent change
> to make "is" a multi-method, the expectation code easily fits into
> test-is. The following patch adds a new asse
I tried asking about this yesterday, but it seems like I expressed my
problem poorly. Anyways, here's another shot. :)
I have a little parser library. With its metafunctions, one can create
rules that accept tokens and spit out a result or nil if the tokens it
receives are invalid.
For instance,
>
> (prefer-method frob ::idea ::thing)
>
(prefer-method [::runtime-tag1 ::idea] [::runtime-tag1 ::thing])
(prefer-method [::runtime-tag2 ::thing] [::runtime-tag2 ::idea])
Provide a dispatch fn that extracts the runtime tag.
--~--~-~--~~~---~--~~
You received th
Have thoughts about this, will have to collect them, will reply soon.
On Thu, Feb 5, 2009 at 9:06 PM, mikel wrote:
>
>
>
> On Feb 5, 7:12 pm, David Nolen wrote:
> > > I'm not looking for a way to statically define protocols in which
> > > classes participate. Consider an example similar to the
Hello,
Is there a reason for the test for (classURL==null) being one of the
condition to try loading the class, in the code of RT.load() (see below the
line with the comment at its end) ?
I think the code will work because there is a catch clause in
loadClassForName, but I can't see any reason to
On Fri, Feb 6, 2009 at 03:05, Stuart Sierra wrote:
> On Feb 5, 2:12 pm, Vincent Foley wrote:
>> Do you have slides for those of us who cannot attend?
>
> I'll post a link when I finish them. :) But my slides tend to be
> images, not outlines. I don't think this meetup is recorded.
That's a sh
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