> I noticed with-open kind of stuck out because it doesn't use vectors
> for binding like let, loop, and others.
I had a similar comment about doseq. I don't think the obstacle is the
technical challenge, but rather Rich's decision about whether to do it
or not. This would be a breaking change, o
Hi Patrick,
How about:
(defmulti length (fn [x]
(if (= :stateMachine (:class x))
(:state x)
(:class x
(defmethod length :yardstick [x] 36)
(defmethod length :walking [x] "short")
(defmethod length :running [x] "long")
user=> (lengt
Is there anyway to do the following with the existing multi-method
facilities?
There is a general multi-method length(object) that splits off to
different methods depending on the :class of the object.
And then specifically for objects with :class = :stateMachine, I want
to define it's method to
Rich,
I've been working with refs tonight and I appreciate the validate-fn
addition. Makes my life a lot easier.
>From reading the docs, 'ensure' keeps a ref from changing inside a
dosync. But if accesses to refs are contained in function calls that
are called during the transaction, the progr
On Oct 13, 7:28 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> If you want to try it, you'll need to put ./gen in your classpath.
Okay, good to know -- sorry for the noise, then.
> 1068 generates and loads all classfiles to/from disk, as a prelude to
> AOT compilation.
I'm very excited about thi
On Oct 13, 8:14 pm, Perry <[EMAIL PROTECTED]> wrote:
> Hi Rich,
>
> Hope this is a helpful report: I'm getting an
> ExceptionInInitializerError in SVN revision 1068, on OS X 10.5.5, w/
> both Java 1.5 & 1.6.
>
1068 is an interim release. If you want to try it, you'll need to
put ./gen in your c
Hi Rich,
Hope this is a helpful report: I'm getting an
ExceptionInInitializerError in SVN revision 1068, on OS X 10.5.5, w/
both Java 1.5 & 1.6.
Transcript below.
Best,
Perry
--
[mac_book]~/all_docs/software/clojure/svnhead $ svn info
Path: .
URL: https://clojure.svn.sourceforge.net/svnro
On Monday 13 October 2008 16:39, Martin DeMello wrote:
> On Oct 13, 12:37 pm, JumpingJupiter <[EMAIL PROTECTED]>
>
> wrote:
> > pretty verbose even for simply windows. Some parts could be
> > shortened with some extra macro - menu's in particular, but I'm
> > starting to think UI code is going to
On Oct 13, 12:37 pm, JumpingJupiter <[EMAIL PROTECTED]>
wrote:
> pretty verbose even for simply windows. Some parts could be shortened
> with some extra macro - menu's in particular, but I'm starting to
> think UI code is going to look pretty ugly unless you drastically
> limit the options for cus
I noticed with-open kind of stuck out because it doesn't use vectors
for binding like let, loop, and others. it was a quick fix using
destructuring to make the macro use square backets
example:
(with-open [f (new java.io.FileWriter "test")] do-stuff)
but as I was writing an email to this list I r
It's live! Thanks to everyone for their help.
6 Scripting Languages Your Developers Wish You'd Let Them Use
Several up-and-coming scripting languages--some open-source--are
gaining popularity among software developers. These dynamic
programming languages, including Groovy, Scala, Lua, F#, Clojure
Thanks to everyone for their help -- the article is live!
6 Scripting Languages Your Developers Wish You'd Let Them Use
Several up-and-coming scripting languages--some open-source--are
gaining popularity among software developers. These dynamic
programming languages, including Groovy, Scala, Lua,
On Oct 13, 4:28 pm, Jeffrey Chu <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I'm having similar issues with r1067 in swank-clojure; but it's not
> printing/reading fns. Instead it's reading, inserting vars, and
> evaling. The weird thing is that I can't seem to reproduce it on a
> small scale. Anyways,
Hi,
I'm having similar issues with r1067 in swank-clojure; but it's not
printing/reading fns. Instead it's reading, inserting vars, and
evaling. The weird thing is that I can't seem to reproduce it on a
small scale. Anyways, that's my problem and I'll keep trying to figure
it out.
I found a diff
I wrote some code to enable declarative swing definitions pretty much
identical in form to Michael's suggestion:
(let [gui
(swingset
(JFrame frame {:setSize [500 500]}
(JPanel panel {:setBackground (. Color orange)}
(JLabel {:setText "Hello World
On Oct 13, 5:31 am, Rich Hickey <[EMAIL PROTECTED]> wrote:
> You cannot, and might never be able to, print/read fns.
Okay, it just looked like something that could be read.
>
> I would examine carefully whether your macro really should be doing
> this, as this is likely to become disallowed once
On Oct 13, 1:57 pm, "Michel Salim" <[EMAIL PROTECTED]> wrote:
> On Sat, Oct 11, 2008 at 9:58 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
> >> Starting from some Scheme or CL code is a good idea. I'll just adapt
> >> it to support literal maps, vectors, and such.
>
> > A pretty-print for Clojure
On Sat, Oct 11, 2008 at 9:58 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
>> Starting from some Scheme or CL code is a good idea. I'll just adapt
>> it to support literal maps, vectors, and such.
>>
>
> A pretty-print for Clojure would be a welcome contribution. In order
> to be an acceptable contr
Hello,
On 13 Okt., 17:02, "Stephen C. Gilardi" <[EMAIL PROTECTED]> wrote:
> user=> (update-in m [:a :b] + 2) ; new
> {:a {:b 3}}
I think this is a good idea. This would also be in-line with things
like
alter and commute.
Sincerely
Meikel
--~--~-~--~~~
Thanks Rich, that worked great. Here's what I ended up using:
(in-ns 'velocity)
(clojure/refer 'clojure)
(import '(org.apache.velocity.app VelocityEngine))
(import '(org.apache.velocity.context Context))
(import '(java.io StringWriter))
(defn make-context [context]
(proxy [Context] []
(c
On Oct 13, 10:17 am, Paul Barry <[EMAIL PROTECTED]> wrote:
> To give a specific example of what I'm trying to do, I'd like to use
> velocity templates in Clojure. So I have this code:
>
> (in-ns 'velocity)
> (clojure/refer 'clojure)
>
> (import '(org.apache.velocity.app VelocityEngine))
> (impo
I've enclosed a modified definition of update-in that allows the
update function "f" to take arguments in addition to "old" value being
updated. The new definition does everything the old definition does
(when additional arguments are not supplied), but it allows "f" to be
an existing func
To give a specific example of what I'm trying to do, I'd like to use
velocity templates in Clojure. So I have this code:
(in-ns 'velocity)
(clojure/refer 'clojure)
(import '(org.apache.velocity.app VelocityEngine))
(import '(org.apache.velocity VelocityContext))
(import '(java.io StringWriter))
On Oct 13, 9:34 am, Paul Barry <[EMAIL PROTECTED]> wrote:
> I was thinking this is a little different because the Keyword data
> type is unique to Clojure. So once in the Java land, you are never
> going to want to use Keywords. In Clojure, I agree, the difference
> between Keyword and String
Having looked at Keyword.java, I'll amend my example:
import clojure.lang.Keyword;
x map.get(new Keyword("myns","foo"));
The above may well reveal that I remember very little Java from
previous lives so feel free to correct any errors.
-Aaron.
On Oct 13, 9:33 am, Aaron Brooks <[EMAIL P
I'm thinking about cases where you are using existing java libraries
that you don't want to/can't re-write to have Clojure specific code in
them. I think the rule for dealing with conflicts would be to give me
the value for the String if it's there, if it's not, try to give me
the value for the K
2008/10/13 Stuart Halloway <[EMAIL PROTECTED]>:
>
> Hi Michael,
>
> The multiplication by n comes after the recur.
>
> Cheers,
> Stuart
>
>>
>> Giving the factorial function as:
>>
>> (def factorial
>>(fn [n] (cond (= n 1)
>> (> n 1) (* n (recur (dec n))
>>
>> the comp
I was thinking this is a little different because the Keyword data
type is unique to Clojure. So once in the Java land, you are never
going to want to use Keywords. In Clojure, I agree, the difference
between Keyword and String should be explicit, but in Java, I feel
like it's just pragmatic to
All,
I would think that changing or wrapping the map would create confusion
and additional overhead. In my mind the most natural interaction would
be to provide a way for Java code to create references to keywords:
x = map.get(clojure.keyword("foo"));// ... or something along
these lines
On Mon, Oct 13, 2008 at 9:06 AM, Stuart Halloway
<[EMAIL PROTECTED]> wrote:
>
> (prn #"\\w+")
> -> \w+
Works for me, SVN 1067:
user=> #"\\w+"
#"\\w+"
user=> (prn #"\\w+")
#"\\w+"
nil
--Chouser
--~--~-~--~~~---~--~~
You received this message because you are subscr
Hi Paul,
I think that I would rather see things remain explicit, i.e. if you
need to interoperate with Java you convert manually before throwing
the map over.
In the Rails world they tried to solve a similar problem (string vs.
symbol keys) by wrappering Hash to be indifferent between stri
(prn #"\\w+")
-> \w+
I was expecting something the reader could handle...
Cheers,
Stuart
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
"Clojure" group.
To post to this group, send email to clojure@googlegroups.c
Now that clojure maps are Java Maps, it is easier to inter-operate
with Java code that has methods that take a Map as one of its
arguments, because you can just pass the Map right into the Java
code. The problem is that often times, the Java method is expecting
the Map to have String values in th
On Oct 13, 3:17 am, Mike Hinchey <[EMAIL PROTECTED]> wrote:
> I know the #= and the AOT changes are new and not explained yet. It
> seems to break a macro I'm writing, which does something like this
> example. It does what I want in 1064, but not 1067.
>
> user> (defmacro aa [f x] `(~(var-get
Hi Michael,
The multiplication by n comes after the recur.
Cheers,
Stuart
>
> Giving the factorial function as:
>
> (def factorial
>(fn [n] (cond (= n 1)
> (> n 1) (* n (recur (dec n))
>
> the compiler complains "Can only recur from tail position".
> Isn't really th
Giving the factorial function as:
(def factorial
(fn [n] (cond (= n 1)
(> n 1) (* n (recur (dec n))
the compiler complains "Can only recur from tail position".
Isn't really the recur in tail position? It is the last expresson to
be evaluated.
--~--~-~--~---
I know the #= and the AOT changes are new and not explained yet. It
seems to break a macro I'm writing, which does something like this
example. It does what I want in 1064, but not 1067.
user> (defmacro aa [f x] `(~(var-get (resolve f)) ~x))
nil
user> (aa inc 3)
java.lang.ExceptionInInitializer
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