Gregg Williams writes:
> I'm currently stuck on how to translate "aNode.setPaint(Color.RED);"
The interop syntax is described here:
http://clojure.org/java_interop
Color.RED is a static field, so we use the Classname/staticField
syntax, so Color/RED. Combining that with (.instanceMember insta
Hi-- I'm continuing on my path to learning how to use Clojure with the
graphics library Piccolo2D (http://
www.piccolo2d.org) by re-implementing some of Piccolo2D's sample
programs. This time, I'm working on the "Building the Interface"
program described at http://www.piccolo2d.org/learn/interface.
On Apr 6, 7:03 pm, ataggart wrote:
> See:
>
> http://richhickey.github.com/clojure-contrib/def-api.html#clojure.con...
Ah, thank you (all).
Will this be in 1.2? Is run-time cost expected to be minor, and will
passing unrecognized keys be an error?
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You received this message because you are s
I would really love to see (clearly by someone much smarter than I :)
an insightful summary of these kinds of concept-heavy discussions,
"stickied" or "FAQd" or even "book'd" somewhere.
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You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this g
will do!
=
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.onthe8spot
See:
http://richhickey.github.com/clojure-contrib/def-api.html#clojure.contrib.def/defnk
On Apr 6, 2:25 pm, Sophie wrote:
> Please don't misunderstand this post - it is not asking for a change
> of syntax, just trying to understand something.
>
> Clojure has chosen positional parameters (just li
On Apr 6, 2010, at 6:08 PM, Sophie wrote:
> Don't you think
> - fixed-order named parameters
> could (should?) be a separate issue from
> - optional, any-order, named parameters
> ?
I don't see the advantage of fixed-order named parameters over keyword
parameters. Note that you can require cer
On Apr 6, 2010, at 9:01 AM, Laurent PETIT wrote:
>* BUT : isn't the real problem that one will not content
> [him/her]/self with playing with in-memory data ? One will want to
> make the data persistent (outside-of-process, aka
> storage-persistance). And with this kind of problem, one will ha
Don't you think
- fixed-order named parameters
could (should?) be a separate issue from
- optional, any-order, named parameters
?
;; :x :y are fixed order, named, while :a :b are optional, named
(defn foo [:x :y & {:keys [a b]] [x, y, a, b])
(foo :x 1 :y 2)
=> [1 2 nil nil]
(foo :x 1 :a 2)
=
On Apr 6, 5:23 pm, Stuart Halloway wrote:
> Have you seen destructuring of rest args in the current master branch?
>
> (defn foo [& {:keys [a b c]}] [a b c])
>
> (foo :a 1 :c 3)
> => [1 nil 3]
>
> With this last bit of sugar in place I am extremely happy with
> Clojure's arg handling.
Hmmm. Loo
On Apr 6, 4:46 pm, Jarkko Oranen wrote:
> problem is that they also make some very common functional patterns
> cumbersome: most notably function application (ie. apply),
> composition, and higher-order functions.
I don't think it should be either-or (and positional would be needed
anyway to call
Have you seen destructuring of rest args in the current master branch?
(defn foo [& {:keys [a b c]}] [a b c])
(foo :a 1 :c 3)
=> [1 nil 3]
With this last bit of sugar in place I am extremely happy with
Clojure's arg handling.
Please don't misunderstand this post - it is not asking for a ch
Can we scavenge or link to the stuff in wikibooks:
http://en.wikibooks.org/wiki/Clojure_Programming/Getting_Started
In particular, getting started simply by installing clojure onto the
system (irrespective of the various dev environment configs). Being
able to have co-workers simply run "sudo por
On Apr 7, 12:25 am, Sophie wrote:
> Just curious
> - what folks think of fixed-positional-keyword params
> - whether it was considered for Clojure
I don't know for certain whether Rich ever considered smalltalk-style
parameters, but I doubt it.
I do like them, though; in Objective-C and Sma
On Apr 6, 12:16 am, Alex Osborne wrote:
> Calling the set as if it is a fn is a short-hand for "get", that is
> retrieving an element from the set. Why would you want to do this, when
> to look it up you need to know what element is? Sets are based on
> value-equality not reference-equality. T
Please don't misunderstand this post - it is not asking for a change
of syntax, just trying to understand something.
Clojure has chosen positional parameters (just like for Lisp, C, C++,
Java, Ruby, Python, Prolog, ...)
Smalltalk composes a full method name from a prefix-name + named
parameters.
Well, as I said in previous post, I got stringp error with advice on
slime-read-interative-args. My guess is that there is something wrong
in (aput 'slime-lisp-implementations 'clojure
(list (swank-clojure-cmd) :init 'swank-clojure-init))) in swank-
clojure.el
I think I might try to look at it aga
my bad. I didn't find swank-clojure on ELPA and tried to install it
manually. now it works. thanks.
On Apr 3, 6:20 am, Phil Hagelberg wrote:
> On Fri, Apr 2, 2010 at 12:19 PM, jney wrote:
> > I'm a newbie in clojure and inemacstoo. I got this message error
> > while launching Slime :
>
> > Debu
You're right, that does explain it. I assumed that variadic arguments
were supported, but maybe I was wrong. Can anyone confirm whether or
not this was ever intended to work?
On Apr 6, 2:32 am, Jarkko Oranen wrote:
> On Apr 6, 8:16 am, Zach Tellman wrote:
>
> > Possibly this fall out from the
Google's top hit for "clojure getting started" is
http://clojure.org/getting_started -- should that page be
replaced or at least simplified and include a prominent link to
the assembla page?
--Chouser
http://joyofclojure.com/
Yes. The page is now somewhat simplified and has a link to the
asse
On Tue, Apr 6, 2010 at 9:13 AM, Chouser wrote:
> Google's top hit for "clojure getting started" is
> http://clojure.org/getting_started -- should that page be
> replaced or at least simplified and include a prominent link to
> the assembla page?
I vote for an HTTP-level redirect if that's possibl
On Tue, Apr 6, 2010 at 4:55 PM, Stuart Halloway
wrote:
> People getting started with Clojure have struggled to find an up-to-date
> source for information on getting their editor of choice up and running.
> This is unfortunate, since there is good support in a bunch of different
> editors.
>
> The
Done !
* Replaced ccw install instructions with a link to
Eclipse/Counterclockwise page !
* Added an "Related projects" link in the counterclockwise home page
Thanks again Stuart for having done such a great work !
--
Laurent
2010/4/6 Stuart Halloway :
> People getting started with Clojure
2010/4/6 Pelayo Ramón :
> Installed with ELPA clojure-mode and swank-clojure. But slime couldn't
> find the swank-clojure.jar so I downloaded it and setted the
> classpath in .emacs to the directory where I stored it along with
> clojure.jar and clojure-contrib.jar
>
> the emacs line is:
>
> (setq
People getting started with Clojure have struggled to find an up-to-
date source for information on getting their editor of choice up and
running. This is unfortunate, since there is good support in a bunch
of different editors.
The "Getting Started" page on Assembla (http://www.assembla.com
On Tue, Apr 6, 2010 at 10:43 PM, Douglas Philips wrote:
> On 2010 Apr 6, at 10:59 AM, Christophe Grand wrote:
>>
>> The cycles are gone but the identity john-doe aand its curren-state are
>> still conflated so you get the same problem:
>
> Thus, since simple trees have the exact same issues, circu
On 2010 Apr 6, at 10:59 AM, Christophe Grand wrote:
The cycles are gone but the identity john-doe aand its curren-state
are still conflated so you get the same problem:
Thus, since simple trees have the exact same issues, circularity is
not the problem.
Really, to me the problem isn't cre
On Tue, Apr 6, 2010 at 9:59 PM, Christophe Grand wrote:
> Btw, to some extent, one can create cyclic data-structures in Clojure (only
> lazyseqs though -- unless you implement your own map or use lazy-map etc.) :
> user=> (defn cyclic-seq [coll] (let [s (promise)] @(deliver s (lazy-cat coll
> @s))
On Tue, Apr 6, 2010 at 3:43 PM, Douglas Philips wrote:
> (def john-doe {:name "John Doe" :email "j...@doe.com"})
>
> (def account {:identity john-doe :balance 100} )
>
> (assoc john-doe :email "john.doe at gee mail.com")
>
> Now the account contains old/obsolete data and no cycles are needed to
On Tue, Apr 6, 2010 at 3:41 PM, Sophie wrote:
> On Apr 6, 8:09 am, Christophe Grand wrote:
> >
> > Let say one can write:
> > (def john-doe {:name "John Doe" :email "j...@doe.com" :account {:owner
> > # :balance 1000}})
>
> At this point the cyclic structure is a consistent value.
True.
>
The question of the OP was also a practical one : "is either Clojure
or functional not a good match?"
Honestly, I don't know the answer for sure, because:
* there is still no (widely known ?) utilities to manipulate things
easily. There were attemps like the one by Jeffrey Streizhem in
clojure
On 2010 Apr 6, at 9:09 AM, Christophe Grand wrote:
On Mon, Apr 5, 2010 at 4:54 PM, Douglas Philips wrote:
Immutability is orthogonal to reference-ness.
There is nothing "wrong" with having immutable cyclic graphs of
values.
There is something wrong with immutable cyclic data structures: an
On Apr 6, 8:09 am, Christophe Grand wrote:
>
> Let say one can write:
> (def john-doe {:name "John Doe" :email "j...@doe.com" :account {:owner
> # :balance 1000}})
At this point the cyclic structure is a consistent value. As long as
updates create new values that match the domain invariants, why
On Mon, Apr 5, 2010 at 4:54 PM, Douglas Philips wrote:
> Immutability is orthogonal to reference-ness.
> There is nothing "wrong" with having immutable cyclic graphs of values.
>
There is something wrong with immutable cyclic data structures: an undefined
(or unexpected) behaviour on update beca
Finally i did it.
Installed with ELPA clojure-mode and swank-clojure. But slime couldn't
find the swank-clojure.jar so I downloaded it and setted the
classpath in .emacs to the directory where I stored it along with
clojure.jar and clojure-contrib.jar
the emacs line is:
(setq swank-clojure-ext
On Apr 6, 8:16 am, Zach Tellman wrote:
> Possibly this fall out from the latest commit requiring an explicit
> 'this' reference (ba6cc3b), I haven't checked any versions but the
> most recent.
>
> user> (defprotocol Protocol (f [a b & c]))
> Protocol
> user> (def p (reify Protocol (f [a b & c] [a
On 3 Apr 2010, at 10:40, Per Vognsen wrote:
By the way, I wanted to emphasize that I don't think this would be an
ideal use of metadata even if your use case was supported. But the
reason metadata is so tempting is that you want frequencies and
distances to be treatable as numbers and so on. If
B Smith-Mannschott writes:
>> Calling the set as if it is a fn is a short-hand for "get", that is
>> retrieving an element from the set. Why would you want to do this, when
>> to look it up you need to know what element is?
>
> Since you asked: canonicalization. I've wanted this on occasion (in
>
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