Hi!
Does anyone know when add-classpath might start working again?
http://groups.google.com/group/clojure/browse_frm/thread/ad254be133a9b47a/ab6585a430e21346?
(It didn't even work for me when I downloaded the v1.0 release. I'm on
MacOS 10.4, running under Emacs/Slime. I have recent Clojure insta
Why does the Snake example in the book use refs when all mutation is
done from the EDT?
To verify that, I put a call to "assert-edt" in front of every dosync
in snake.clj. assert-edt is defined like this:
(defn assert-edt [] (assert (javax.swing.SwingUtilities/
isEventDispatchThread)))
And it n
On Thu, Jul 9, 2009 at 10:29 PM, J. McConnell wrote:
> You can try with-local-vars. I'm not sure of the performance
> characteristics of this versus using an atom, but it certainly feels
> more imperative:
It's slow. I suspect it (and binding) uses Java's ThreadLocal, which is
slow. Loop/recur
It would be useful to have a *math-context* or similar that had a sensible
default and could be set with binding to affect bigdec calculations within
the temporal scope of said binding.
--~--~-~--~~~---~--~~
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I wrote these and thought they might be useful. Feel free to add them
to clojure.contrib.seq-utils
(defn flatten-n [n coll]
"Like flatten, but only goes n levels deep."
(if (= n 0)
coll
(recur (dec n) (apply concat (map #(if (sequential? %) % (list %))
coll)
(defn- unflatten* [t
On Fri, Jul 10, 2009 at 7:14 AM, John Harrop wrote:
> It would be useful to have a *math-context* or similar that had a sensible
> default and could be set with binding to affect bigdec calculations within
> the temporal scope of said binding.
user=> (binding [*math-context* (java.math.MathContex
Hello,
I wanted to recommend the following method be added to
clojure.contrib.sql (stolen directly from do-prepared). I have used it
successfully with Oracle stored procedure calls. Please let me know if
I'm not posting to the right place or in the right manner or any
improvements that can be mad
On Jul 10, 9:01 am, Chouser wrote:
> On Fri, Jul 10, 2009 at 7:14 AM, John Harrop wrote:
> > It would be useful to have a *math-context* or similar that had a sensible
> > default and could be set with binding to affect bigdec calculations within
> > the temporal scope of said binding.
>
> user
I've been playing along at home for awhile now, but this example hit
close to home -- I've written variations on this code countless times
in perl, and figured I'd take a stab at clojuring it while also taking
advantage of clojure.contrib.seq-utils's very useful to the matter at
hand group-by. I'
Hi Rowdy,
The snake uses refs because idiomatic Clojure code should not require
binding to a thread. The snake game could be extended to be a
simulation that runs on multiple threads (or perhaps even multiple
machines) without having to change the basic code. Normally, you
wouldn't build
On Jul 10, 10:28 pm, Stuart Halloway
wrote:
> binding to a thread. The snake game could be extended to be a
> simulation that runs on multiple threads (or perhaps even multiple
Makes sense. For the example in the book it just seemed completely
redundant. And when writing Swing code, at least
On Thu, Jul 9, 2009 at 11:31 PM, Mark Engelberg wrote:
>
> I'm running Clojure 1.0.
>
> Could someone please check and see whether this is still a bug in the
> most current version?
Yup, I still see the same behavior in HEAD.
- J.
--~--~-~--~~~---~--~~
You receiv
To rebind a macro in clojure.core you would need to first enter that
namespace:
(in-ns 'clojure.core)
Or, create your own dosync in a different namespace which explicitly
does not refer to clojure.core/dosync. See the docstring for
clojure.core/ns for using :exclude.
Stuart
>
> On Jul 10
On Fri, Jul 10, 2009 at 9:22 AM, Rich Hickey wrote:
> On Jul 10, 9:01 am, Chouser wrote:
> > On Fri, Jul 10, 2009 at 7:14 AM, John Harrop
> wrote:
> > > It would be useful to have a *math-context* or similar that had a
> sensible
> > > default and could be set with binding to affect bigdec calcu
On Jul 10, 9:44 am, John Harrop wrote:
> On Fri, Jul 10, 2009 at 9:22 AM, Rich Hickey wrote:
> > On Jul 10, 9:01 am, Chouser wrote:
> > > On Fri, Jul 10, 2009 at 7:14 AM, John Harrop
> > wrote:
> > > > It would be useful to have a *math-context* or similar that had a
> > sensible
> > > > defa
Hi,
I am facing another problem now. Please take a look at this code -
(import '(System.IO Path Directory File StreamWriter
DirectoryNotFoundException))
(import '(System.Diagnostics Process ProcessStartInfo
ProcessWindowStyle))
(defn strt [tool]
(let [info (ProcessStartInfo. tool) p (Pr
This did the trick:
(ns clojure.core)
(defmacro dosync [& body]
`(do
(assert (not (javax.swing.SwingUtilities/isEventDispatchThread)))
(#'dosync ~...@body)))
This is great for testing!
Thanks for your help, Stu. And btw the book is really great so far
(and I'm almost through)! It pr
On Jul 10, 2009, at 9:22 AM, markgunnels wrote:
I wanted to recommend the following method be added to
clojure.contrib.sql (stolen directly from do-prepared). I have used it
successfully with Oracle stored procedure calls. Please let me know if
I'm not posting to the right place or in the right
Hi Stephen,
That name sounds much better than mine and sorry for breaking process.
The code was definitely a trivial modification of code you wrote.
Thanks,
Mark
On Jul 10, 10:51 am, "Stephen C. Gilardi" wrote:
> On Jul 10, 2009, at 9:22 AM, markgunnels wrote:
>
> > I wanted to recommend the fo
On Jul 10, 2009, at 11:05 AM, markgunnels wrote:
That name sounds much better than mine and sorry for breaking process.
The code was definitely a trivial modification of code you wrote.
In all the fuss over procedure, I see I forgot to thank you for your
request and your report of success w
Actually, it didn't work (apart from having a "not" in there, which I
only used for testing).
Calling sync directly works, though:
(ns clojure.core)
(defmacro dosync [& body]
`(do
(assert (javax.swing.SwingUtilities/isEventDispatchThread))
(sync nil ~...@body)))
But can't I somehow
2009/7/10 Rowdy Rednose :
>
> Actually, it didn't work (apart from having a "not" in there, which I
> only used for testing).
>
> Calling sync directly works, though:
>
> (ns clojure.core)
> (defmacro dosync [& body]
> `(do
> (assert (javax.swing.SwingUtilities/isEventDispatchThread))
> (
To quote Benjamin Stewart:
;; the body of this fn should probably be a macro that takes
;; any number of comparisons and or-chain them correctly such that
;; ties cascade to the next comparison and obviates the need for
;; explicit calls to false-if-zero. Does it already exist?
This could be do
2009/7/10 Michael Wood :
> 2009/7/10 Rowdy Rednose :
>>
>> Actually, it didn't work (apart from having a "not" in there, which I
>> only used for testing).
>>
>> Calling sync directly works, though:
>>
>> (ns clojure.core)
>> (defmacro dosync [& body]
>> `(do
>> (assert (javax.swing.SwingUtil
The idea is to have all existing code (that gets recompiled after my
redefinition) benefit from my changes automatically, although I fear
it's not considered good style to do this.
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2009/7/10 Rowdy Rednose :
>
> The idea is to have all existing code (that gets recompiled after my
> redefinition) benefit from my changes automatically, although I fear
> it's not considered good style to do this.
Ah. Well, I've just tried:
(in-ns 'clojure.core)
(def old-dosync dosync)
but it
I think you'll have to retrieve the old dosync corresponding function, and
call this function to get the corresponding generated code, and insert this
code at the correct place.
Note also that I would better use (in-ns 'clojure.core) instead of (ns
clojure.core) (ns is reserved for the creation of
On Fri, Jul 10, 2009 at 3:44 PM, Rowdy Rednose wrote:
>
> On Jul 10, 10:28 pm, Stuart Halloway
> wrote:
> You can rebind macros, but in order to use them you have to compile
> > some code again.
>
> Recompiling would be fine in this case, but how can I rebind macros?
eval is evil but...
(let
Hi all,
I uploaded a new revision.
What's new?
- filled tables with colours (grey version also included)
- attempt to categorize zippers and parallel
- added and removed a few commands
In short, if you like the last revision, you will love this one.
As always, suggestions and comments are welc
This is odd:
user=> (/ 1.0 0.0)
#
Shouldn't it be Double/POSITIVE_INFINITY?
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Note that post
A quick java program:
public static void main(String[] args) {
System.out.println(1.0/0.0);
}
Infinity
On Jul 10, 11:08 am, John Harrop wrote:
> This is odd:
> user=> (/ 1.0 0.0)
> # (NO_SOURCE_FILE:0)>
>
> Shouldn't it be Double/POSITIVE_INFINITY?
--~--~-~--~~~---
Okay, I just printed the color version... Damn! This is awesome! I
need to find some really heavy paper now, or a laminator machine, or
both.
Good job.
On Jul 10, 10:27 am, Steve Tayon wrote:
> Hi all,
>
> I uploaded a new revision.
>
> What's new?
> - filled tables with colours (grey version
Library: Cascade
URL: http://wiki.github.com/hlship/cascade
Author: Howard M. Lewis Ship
Category: web
License: ASL 2.0
A functional web application framework: 1/10th Tapestry
(http://tapestry.apache.org) goodness, 9/10ths Clojure awesomeness.
Adapts Tapestry's general approach to templating in
On Jul 10, 2009, at 12:24 PM, Sean Devlin wrote:
>
> A quick java program:
>
> public static void main(String[] args) {
>System.out.println(1.0/0.0);
> }
>
> Infinity
>
>
> On Jul 10, 11:08 am, John Harrop wrote:
>> This is odd:
>> user=> (/ 1.0 0.0)
>> #> (NO_SOURCE_FILE:0)>
>>
>> Shouldn'
On Fri, Jul 10, 2009 at 1:00 PM, Daniel Lyons wrote:
>
>
> On Jul 10, 2009, at 12:24 PM, Sean Devlin wrote:
>
>>
>> A quick java program:
>>
>> public static void main(String[] args) {
>> System.out.println(1.0/0.0);
>> }
>>
>> Infinity
>>
>>
>> On Jul 10, 11:08 am, John Harrop wrote:
>>> This
On Jul 10, 2009, at 2:05 PM, Kevin Downey wrote:
> using math knowledge to answer (corner) cases of the floating point
> spec is silly
> people using doubles should be able to expect doubles to behave like
> doubles
I don't think it's silly, but fair enough.
—
Daniel Lyons
--~--~-~
Here is a debugged version:
(in-ns 'clojure.core)
(let [old-dosync-fn @#'dosync]
(defmacro dosync [& body]
(let [real-dosync-job (apply old-dosync-fn body)]
`(do
(assert (javax.swing.SwingUtilites/isEventDispatchThread))
~real-dosync-job
HTH,
--
Laurent
2009/7/
user> (/ (double 1.0) (double 0.0))
Infinity
This seems reasonable since by using (double 0.0), you're asking for
double-spec "math" rather than math. :)
-Mike
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hi,
i downloaded it, and I think i followed the config instructions. What am I
supposed to run?
I double-clicked on WinCommand.exe and got the GUI up. Then I clicked on
the Clojure tab, which just printed out "Application closed!!!"
I clicked on Clojure 1.0 and Clojure_1.1_alpha ... no error, b
Awesome! Works great! (After fixing the typo in "SwingUtilites". that
is :)
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Note that posts
On Thu, Jul 9, 2009 at 4:24 PM, John Harrop wrote:
>
> The difficult thing would be preserving the inability of bad Clojure code to
> crash the process, and most especially, providing all of Swing, AWT, JDBC,
> JAXP, and all of the rest of the goodies from the Java class library. Being
> JVM-hoste
Hey Laurent,
Making this more comprehensible is part of my plan for documenting how
to create dispatch. You don't really need to understand the whole XP
paper to know enough to understand how pretty print works. Let me lay
out a quick overview here:
High-level concepts
Top-level concept: the pr
> As awesome as this sounds, wouldn't it first require a
> native implementation to be created for each language prior to Clojure
> in Clojure running on the platform?
No, you don't need to write a native port for each platform.
Typically, you break the compiler into two broad parts: the platfor
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