In a java project last year we had to create a board game.
A Board had Piece objects.
Some pieces can share position. Some don't.
The way i solved this in Java was using double dispatch.
http://pastebin.com/brrRtqsS
(I just extracted the methods out of their respective classes)
But i think it
I hereby volunteer to organize a welcome party of Portland locals, a
goodwill committee of sorts, to plan and orchestrate visits to local
landmarks -and by that I mean microbreweries- and highlights.
On Sat, Nov 17, 2012 at 9:26 AM, Alex Miller a...@puredanger.com wrote:
If you somehow missed
A long time ago I posted some macros to do double-dispatch with protocols
and records. The link was http://paste.lisp.org/+2023 but it no longer
works.
The basic idea is you dispatch on the first argument to an intermediate
type that then dispatches on the second argument. It's complicated,
Here's an example of using multimethods. (Note: I overrode the Clojure
defmulti/defmethod macros with my own that play more nicely with the repl, and
for other purposes. It's a straightforward translation.) You can see all the
code here:
Yes indeed. with multimethods you can doue multi-argument dispatch.
But that means that for every possible collision. I have to specify a
method?
Would it be a good idea to introduce taxonomies here?
On Monday, November 19, 2012 4:02:18 PM UTC+1, Stuart Sierra wrote:
A long time ago I
Yes, you are seeding and taking different paths in the problem area.
Best case one could model the problem area with some priors and do some
minimal-overlapping search of features.
I find this one very interesting: http://metacog.org/main.pdf
Apparently it produces good results and to me seems
If you have too many neurons or not a big enough dataset, you risk learning
the features of the trainingset but not the generality of the problem.
[e1 e2 answer]
(def dataset[[1 1 2] [2 2 4] [4 4 8]])
Are you learning addition here or a doubling function?
If you have enough neurons, you could
Yes, that's exactly what I found. I did a lot of test runs, varying my
learning coefficient each time. The learning coefficients I used, ranged
from 0.01 to 1.5. 0.02 seems to be a good coefficient for the data set I've
started out with. I'm going to play around with it a little more though -
Hey, thanks for the *COMPETENT PROGRAM EVOLUTION* paper. I'll take a
closer look at that.
And I too think using reference material is a good start. The only clear
outline of the backprop algorithm I found was in this paper:
page.mi.fu-berlin.de/rojas/neural/chapter/K7.pdf. I haven't found a paper
for what its worth, I'm building a highly polymorphic board-game engine
[1] and I've stayed away from multimethods...I've used every single
polymorphism capabillity that clojure provides (records/protocols,
map-based, HOFs etc) except multi-methods. Performance is acritical
matter for this
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Sean Corfield seancorfi...@gmail.com writes:
Then you can show it with `gpg --export -a $KEY_ID`.
$KEY_ID? (again, as I noted at the conj, without good documentation on
the Leiningen site for this, folks won't necessarily know what this
As a starting point, the gpg website features native installers for both
Windows and Mac OS.
http://www.gnupg.org
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Moving from clojure-1.5-alpha1 to -alpha4 i get this again:
NoClassDefFoundError jsr166y/ForkJoinTask clojure.core.reducers/fjinvoke
(reducers.clj:61)
It took me a minute but eventually I remembered the same thing happened
when I moved from 1.4 to 1.5-alpha1 in order to use reducers. There
Try -beta1 - I recall a patch recently that was supposed to fix this.
On Mon, Nov 19, 2012 at 11:47 AM, Jim - FooBar(); jimpil1...@gmail.comwrote:
Moving from clojure-1.5-alpha1 to -alpha4 i get this again:
NoClassDefFoundError jsr166y/ForkJoinTask clojure.core.reducers/fjinvoke
clj-xpath is a library that makes it easier to with XPath from Clojure.
I've never announced this library before (or any for that matter). Someone
recently sent me a pull request to fix an issue in the README (during the
Conj) so I thought I'd announce it to solicit feedback.
The Leiningen
On 19/11/12 19:48, Sean Corfield wrote:
Try -beta1 - I recall a patch recently that was supposed to fix this.
thanks it works! :)
Jim
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On Mon, Nov 19, 2012 at 9:51 AM, Phil Hagelberg p...@hagelb.org wrote:
Perhaps it would be helpful if you could explain in more detail what it
is about the provided explanation that you found confusing?
In the first step you use an actual example, then switch to $KEY_ID without
explanation,
Jeff Heon writes:
As a starting point, the gpg website features native installers for both
Windows and Mac OS.
http://www.gnupg.org
And for OSX:
https://www.gpgtools.org/
; Lee
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I now have the same problem as Jim (with
https://clojars.org/strucjure/versions/0.3.2). I do have a gpg key set up
and previous deploys claimed to be signing (although they are list as
unsigned now).
What was the fix in this case?
On Sunday, 18 November 2012 11:27:36 UTC-5, Nelson Morris
Is there a particular reason for not using Bouncy Castle[1]. Instead of
forcing users to install gpg lein can generate and/or upload the key.
[1] http://www.bouncycastle.org/
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Nurullah Akkaya
http://nakkaya.com
On Mon, Nov 19, 2012 at 10:08 PM, Lee Hinman matthew.hin...@gmail.comwrote:
Nurullah Akkaya nurul...@nakkaya.com writes:
Is there a particular reason for not using Bouncy Castle[1]. Instead
of forcing users to install gpg lein can generate and/or upload the
key.
Yeah, we intended to use that originally, but Bouncy Castle's PGP
support is awful beyond words. It's
On Nov 19, 2012, at 9:32 AM, Thomas Goossens wrote:
Yes indeed. with multimethods you can doue multi-argument dispatch.
But that means that for every possible collision. I have to specify a method?
If you read along in `asteroids.clj` file I showed, you'll see an example of a
taxonomy. A
On Mon, Nov 19, 2012 at 2:28 PM, Phil Hagelberg p...@hagelb.org wrote:
Yeah, we intended to use that originally, but Bouncy Castle's PGP
support is awful beyond words. It's effectively undocumented, and the
classes it exposes really only make sense if you have the OpenPGP RFC
memorized.
Clojure Koans - Recursion
(defn recursive-reverse [coll]
(loop [coll coll
acc '() ]
(if (= (count coll) 0)
acc
(recur (rest coll) (cons (first coll) acc))
)
)
)
I struggled with this one for a while - I don’t want to admit it, but
honestly even though i
Hey, just commented on the created
issuehttps://github.com/pallet/ritz/issues/59of how to get
*cljsbuild auto* and for *cljsbuild repl-listen* setup as nrepl middleware.
Is it a matter or passing those as arguments into the nrepl eval
If you are familiar with tail recursion, then loop/recur this is Clojure's way
to achieve tail recursion.
http://en.wikipedia.org/wiki/Tail_call
The general tail call optimization mechanism as implemented in the programming
language Scheme, for example, means that tail-position calls must not
2012/11/19 Kyle R. Burton kyle.bur...@gmail.com
An introduction and some documentation is available here:
http://kyleburton.github.com/clj-xpath/site/
The project is on github here:
https://github.com/kyleburton/clj-xpath
Dependency information is at the very bottom of the document?
FWIW, after setting up a public key etc and using lein deploy clojars to
push congomongo 0.3.3 (successfully with one key), I am also getting the
error about transferring the POM:
Sending congomongo/congomongo/0.3.3/congomongo-0.3.3.pom.asc (1k)
to https://clojars.org/repo/
Sending
Sean Corfield seancorfi...@gmail.com writes:
Are you saying that all those people who don't have gpg or similar
installed are unprofessional? It seems that such a statement would
insult a very large number of software developers.
It's one thing to not have gotten around to learning something;
I just received the book today. I was surprised to see how thin it is, but
I'm glad the book exists. I had a lot of trouble getting up and running
several months ago, using only the scattered install instructions on the
web. It's nice to have a clear path to getting started.
Unfortunately, I
On Mon, Nov 19, 2012 at 10:32 PM, Phil Hagelberg p...@hagelb.org wrote:
Someone who writes software for a living
without understanding how to securely share secrets over email *and is
perfectly happy with that fact* is doing something wrong.
Thanx for that clarification :)
That's actually
On Monday, November 19, 2012 8:18:16 PM UTC-8, puzzler wrote:
Then, at the command prompt I typed:
lein trampoline cljs-build repl-rhino
and got the following error message. I'm running on Windows. Any idea
what's going wrong?
Thanks.
These kinds of errors usually mean a file path
Thanks for volunteering! I need you!
I'll be in touch... (it might be a few weeks but fear not, I have you in my
notes).
Alex
On Monday, November 19, 2012 12:48:10 AM UTC-6, César Piñera wrote:
I hereby volunteer to organize a welcome party of Portland locals, a
goodwill committee of
I wonder if it's some aspect of lein trampoline on Windows. As I understand
it, trampoline generates a file that is used to fire up the next process
and it may well have some *nix-ism that isn't compatible with Windows?
On Mon, Nov 19, 2012 at 11:18 PM, Mark Engelberg
Looks like George nailed it with his note about issue 674 which came in
while I was writing my (accurate but not particularly helpful) response...
On Mon, Nov 19, 2012 at 11:45 PM, Sean Corfield seancorfi...@gmail.comwrote:
I wonder if it's some aspect of lein trampoline on Windows. As I
Hi,
I'm brand new to ClojureScript and have been trying to get myself
familiarized with it's javascript interop capabilities by implementing
the Dojo toolkit tutorials. I've successfully implemented several of
the tutorials, but now I've run into something that I can't figure out
and am looking
I'd caution anyone against trying to redeploy their libraries right now
since there seems to be some serious unresolved issues. I just tried a
redeploy myself and am also getting the ReasonPhrase:Forbidden error.
Unfortunately this seems to leave the repo in a bad state, since dependency
pull
I removed congomongo completely from my local repo and lein repl seemed to
pull it back down with no problems. Tested it on two machines. So it seems
the repo on Clojars is OK for me - except that I can't redeploy the POM?
On Tue, Nov 20, 2012 at 12:22 AM, Peter Taoussanis
BTW for those of you running into the ReasonPhrase:Forbidden error, it
seems as if the old lein-clojars can be used to restore a repo to a working
(unsigned) state.
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+1 on the checksum validation error and ReasonPhrase:Forbidden on the pom.
Using leiningen preview10. I updated my version number to not have
SNAPSHOT, so maybe that's why it's not working, compared to Sean's?
Regardless of the current bug, thanks for working on this functionality,
Phil (and
Ugh, I should have guessed. My attempts to do clojurescript several months
back were foiled by trampolining problems, but that was on lein 1.7. I was
under the impression those problems had been fixed in lein 2.0, so I had
expected it to work, but it looks like there is still an issue. Any easy
On Monday, November 19, 2012 9:34:29 PM UTC-8, puzzler wrote:
Ugh, I should have guessed. My attempts to do clojurescript several
months back were foiled by trampolining problems, but that was on lein
1.7. I was under the impression those problems had been fixed in lein 2.0,
so I had
Sounds good! There's a few more fellow clojurians around. I'll bring the matter
during our next meeting. You have my email, and my phone is 503-860-2792. It
was good meeting you at the conj.
--
Cesar Pinera
On Monday, November 19, 2012 at 8:32 PM, Alex Miller wrote:
Thanks for
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