Ok not to worry, my environment was bust, a repl restart sorted the
issue.
On Dec 2, 11:27 pm, N8Dawgrr nathan.r.matth...@gmail.com wrote:
Hi Clojurians,
I hit the following error today. My environment is Clojure 1.3
(eval (read-string (clojure.repl/source-fn 'keep-indexed)))
I run this line
java -cp c:/opt/jars/clojure.jar:. clojure.main foo.clj
On windows, the java classpath separator is ;, so that should be
java -cp c:/opt/jars/clojure.jar;. clojure.main foo.clj
I get it can't find clojure.main
Doesn't really seem to matter here, but to eliminate
On Saturday, December 3, 2011 12:16:43 AM UTC-5, Sean Corfield wrote:
On Fri, Dec 2, 2011 at 12:37 PM, George Jahad
clo...@blackbirdsystems.net wrote:
The easiest way to use cdt is from emacs, as described here:
http://georgejahad.com/clojure/swank-cdt.html
Could you add a note to clarify
Chris, that's not fatal. Mine works just fine despite the warning.
On 03/12/2011 11:29, Chris Perkins wrote:
On Saturday, December 3, 2011 12:16:43 AM UTC-5, Sean Corfield
wrote:
On Fri, Dec 2, 2011 at 12:37 PM, George Jahad
clo...@blackbirdsystems.net wrote:
The easiest way to use cdt
I realize now that I just pasted the warning, but I was getting a class
loading exception too.
I seem to have solved it with this, in my project.clj:
:extra-classpath-dirs [/usr/lib/jvm/java-6-sun/lib/tools.jar]
I still get the warning, but it works now. Thanks Edmund.
- Chris
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You
Hi Andrew,
your problem is that your recursive macro's termination criterion (no
exception thrown for exp) is only there at runtime, but not at macro
expansion time.
Why don't you use a function here?
(defn itry
Calls f until it succeeds, querying the user for help.
[f]
(try (f)
On Friday, September 23, 2011 8:00:36 AM UTC-4, Sam Aaron wrote:
I'd be very happy to write up a Getting Started tutorial on the ritz
wiki if I can get things working.
Sam
(two months later)
Not to publicly shame you or anything, Sam, but... how's that tutorial
coming along? :)))
On 3 Dec 2011, at 14:03, Chris Perkins wrote:
On Friday, September 23, 2011 8:00:36 AM UTC-4, Sam Aaron wrote:
I'd be very happy to write up a Getting Started tutorial on the ritz wiki
if I can get things working.
Sam
(two months later)
Not to publicly shame you or anything,
Have you looked at seesaw? What differences are there in the design and
intent?
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On Saturday, December 3, 2011 9:50:21 AM UTC-5, Sam Aaron wrote:
I never did manage to get ritz working. I believe the issue was with ritz
- cake (I still use cake for Overtone hacking). However, now that cake
and lein are going to be united, we can just focus on lein support for the
Aren't the calls to itry-the-fn different from the calls to itry-the-macro?
For example, let's say my expr is (/ a b) where b is currently zero and
maybe the user decides to set a new value for b when prompted.
itry-the-macro can be called this way: (itry (/ a b)) and is able to print
out the
A matter of curiosity: What are you doing that requires so much symbol
manipulation?
-S
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And even that (custom exception classes) should become unnecessary with the
almost complete CLJ-733 (data conveying exception).
-S
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Note that
Map destructuring can help here:
(defn foo [{:keys [one two] :as args}]
(bar args))
(defn bar [{:keys [three]}}
...)
(foo {:one 1 :two 2 :three 3})
-S
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If foo is their only caller, bar and baz can be locals inside foo and
thus giving baz direct access to foo's params. Checkout (letfn):
http://clojuredocs.org/clojure_core/1.2.0/clojure.core/letfn
On Dec 2, 7:34 pm, Jim Crossley j...@crossleys.org wrote:
Hi,
I have a public function foo that
You should be able to just change your macro to a function, remove the
backtick, and change (try ~expr ...) to (try (eval expr) ...).
- Chris
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Hi everyone,
I was searching the web these days trying to find out more about these
two macro systems and understand their differences, and why one is
preferable over the other (or not). I'd like to share with you some
ideas, and hopefully get some opinions back as well. Coming from the
lisp
On Sat, Dec 3, 2011 at 3:29 AM, Chris Perkins chrisperkin...@gmail.com wrote:
So I guess you didn't get this error then?
I did get that warning on my desktop system but CDT worked just fine.
user (require '[swank.cdt :as d])
warning: unabled to add tools.jar to classpath. This may cause CDT
I like that a lot, Stuart, thanks! Named params are a bonus, too:
Before I wasn't sure which was on top: (overlay x y pred)
Now it's more clear: (overlay :on x :with y :using pred)
Thanks again!
Jim
On Sat, Dec 3, 2011 at 1:03 PM, Stuart Sierra
the.stuart.sie...@gmail.comwrote:
Map
Unfortunately, foo is not their only caller, but that's a cool technique
I'm sure I'll find a use for. :)
Thanks,
Jim
On Sat, Dec 3, 2011 at 1:05 PM, Armando Blancas abm221...@gmail.com wrote:
If foo is their only caller, bar and baz can be locals inside foo and
thus giving baz direct access
Hi,
I'm using goog.Timer inside my ClojureScript application. When I
compile using the non-optimizing cljsc the code compiles and the
application works fine. If I try to compile using the optimizing
compiler however I get the following error:
cljsc hello.cljs '{:optimizations :advanced}'
dj-peg 0.1.0
A Ring inspired (aka functional and composable) parsing expression grammar
(PEG) library.
A while back I wrote a PEG generator. Since it was buggy, I've completely
rewritten it and also tried to write it psuedo literate programming (LP)
style, in that I try to make it more of a
Forgot to post the github link:
git://github.com/bmillare/dj-peg.git
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Hello,
I'm just starting to upgrade to 1.3 ( I know, I know I should have
done this before :)
Like many of you, I am using lein, only I'm just starting to update
the dependency list. Clojure contrib seems pretty straight forward and
documented, but for what about libraries that are found on
Hi Nils,
A while back, I also took a stab* at implementing Erlang-style actors in
Clojure, along with solutions for a few classic concurrency problems
(Dining Philosophers, Sleeping Barber). I was blown away by how easy it
was to implement actor semantics on top of agents.
Comparing our
There's no light on in my attic. It's hollow and dark. :-P
(itry (/ 5 0))
== exception
(itry (fn [] (/ 5 0)))
== #core$eval6242$fn__6243 itf.core$eval6242$fn__6243@3c62e8
But that's ok. I have my ugly macro that uses loop-recur. And I'll be fine.
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On Sat, Dec 3, 2011 at 11:50 AM, Tim Robinson tim.blacks...@gmail.com wrote:
Like many of you, I am using lein, only I'm just starting to update
the dependency list. Clojure contrib seems pretty straight forward and
documented, but for what about libraries that are found on Clojars?
Are they
Hi All,
I currently have data stored in a hash-map as follows:
(atom
{ [1 2] value 1,
[1 3] value 2,
[4 5] value 3
[4 6] value 4
})
I need to identify entries in this map where *either* the first or the
second value in the key matches a predicate.
(swap! my-map dissoc 1)
= {
[4 5]
On Sat, 2011-12-03 at 13:14 -0800, Base wrote:
I need to identify entries in this map where *either* the first or the
second value in the key matches a predicate.
Unfortunately, you can only have one notion of key equality per map, so
you need to either introduce some linear-search component
I don't know what data the vectors depict, but if they are like floating
point numbers and you want to do distances etc (like geodata), and need
high performance on various strange matchings you should consider something
like R-trees
http://en.wikipedia.org/wiki/R-tree
(or check if there is some
Hi Benny,
On Dec 3, 9:21 pm, Benny Tsai benny.t...@gmail.com wrote:
Hi Nils,
A while back, I also took a stab* at implementing Erlang-style actors in
Clojure, along with solutions for a few classic concurrency problems
(Dining Philosophers, Sleeping Barber). I was blown away by how easy it
Hi Andrew,
the approach suggested by Tassilo looks correct.
Macros are evaluated at compile-time, so you need a termination
condition that can be decided without actually running your form. In
you're case you want run-time delayed evaluation, which is easily
achieved by wrapping the expression
Hi Rett
There is no such type as org.gnome.gtk.Window$**KeyPressEvents, at least
not in 4.1 of the Java Gnome
APIhttp://java-gnome.sourceforge.net/doc/api/4.1/org/gnome/gtk/Window.html
. org.gnome.gtk.Window$**KeyPressEvent exists though. I'd guess you have a
typo somewhere, perhaps in the
In rare cases using vars + binding may be a good solution, although
your functions become impure and there can be interesting interactions
with laziness.
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1) Write itry-fn which takes a function and the source of the
function. Example usage: (itry-fn (fn [] (/ 5 0)) '(/ 5 0))
2) Next write your itry macro to use the function:
(defmacro itry
[expr]
`(itry-fn (fn [] ~expr) '~expr))
A general rule of thumb for macros is that they should provide
I think that Common Lisp macros are, strictly speaking, more powerful than
Scheme macros, but I don't have a citation.
-S
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Note that posts
Stuart Sierra the.stuart.sie...@gmail.com writes:
I think that Common Lisp macros are, strictly speaking, more powerful
than Scheme macros, but I don't have a citation.
Let over Lambda is essentially a huge essay about why there's and will
never be anything as powerful than the CL macro
This talk of Scheme macros is a little weird: are we talking syntax-case,
explicit-renaming, or unhygienic defmacro? Scheme has them all.
There are also implementation-specific mechanisms for writing reader macros:
what's left?
On Dec 3, 2011, at 14:57, Stuart Sierra
Scheme style macros in Clojure: https://github.com/qbg/syntax-rules
Scott
On Sat, Dec 3, 2011 at 1:20 PM, Razvan Rotaru razvan.rot...@gmail.comwrote:
Hi everyone,
I was searching the web these days trying to find out more about these
two macro systems and understand their differences, and
Hello Gary,
Hello Gary,
To be honest I didn't look at seesaw much while developing Clarity, so
I didn't make any conscious decision to differentiate with seesaw.
It's very interesting to see that both me and Dave Ray came up with
similar solutions/features.
It seems that Seesaw is more concise
Thank you - that worked brilliantly. I'm using a Java load testing
tool called The Grinder and it has an instrumented HTTP library that
is dependent on running within The Grinder. So I have clj-http for
developing my tests and then I can drop them into load testing and
substitute the Grinder using
On Sun, 04 Dec 2011 00:08:36 +0100
Tassilo Horn tass...@member.fsf.org wrote:
Stuart Sierra the.stuart.sie...@gmail.com writes:
I think that Common Lisp macros are, strictly speaking, more
powerful than Scheme macros, but I don't have a citation.
Let over Lambda is essentially a huge
Howdy,
I'll clarify some of Stathis' remarks about Seesaw below. Obviously,
I'm a little biased, but Clarity looks cool and I plan on borrowing
some of its features for Seesaw in the next release or two :) I think
it's great to have multiple projects like this to inspire each other
and keep
Wow. I didn't thought this was possible. You know, I have seen a lot
of people saying that scheme macros are more powerfull, citing the
fact that scheme also has lisp macros, while it's not possible to do
it the other way around.
On Dec 4, 2:06 am, Scott Jaderholm jaderh...@gmail.com wrote:
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