Determining exactly how much memory objects are using is often
desirable, especially since one of Clojure's few flaws (which is the
JVM's fault, mostly) is that it can be fairly memory-hungry.
So, I took the techniques described in
http://www.javaworld.com/javaworld/javatips/jw-javatip130.html,
> I know that all Java GUI libraries can be used within the REPL, but it is my
> understanding that in order to make it self-contained and executable (a jar
> or a class file), it is necessary to write some Java and call the Clojure
> code from the java applet or application. Is this true, or am
I agree, Jambi is a better all-round product... but why the Swing
hate? It's fine for what it is. Most of it's drawbacks (horrible L&F,
poor performance) are things of the past, now.
It would definitely be my framework of choice for a quick, one-off app
or an applet.
-Luke
On Feb 16, 10:50 am,
So, my project is reaching a sufficient level of complexity where I
really need good error tracking - when something goes wrong, I need to
know exactly what it was.
I have programmed in Java for a long time, and my first instinct is to
simply use the try and throw special forms more or less as I
Recently, in my code, I have been struggling with which of the two
equivalent forms is, in a general sense, "better".
(defn my-fn1 [input]
(let [value1 (op1 input)
value2 (op2 input)
value3 (op4 value1 value2)]
(op5 value3)))
(defn my-fn2 [input]
(op5 (op4 (op1 input) (op
As my Clojure application is now getting quite complex, I was curious
as to what "workflow" people are using for design, development,
testing and debugging.
I'll get started with what I've found, so far, though I am definitely
open to suggestion. There are a few parts I'm not quite satisfied
with
So, I'm doing the whole Euler thing, and I'm writing a function for
finding primes using wheel factorization in combination with the Sieve
of Eratosthenes.
The algorithm is correct, but very slow. I've managed to isolate the
part that's having unexpectedly bad performance.
I just can't see why t
Seems like there's a bug here. All the digits less than 8 work. If
leading zeros aren't allowed, at least the behavior ought to be
consistent.
(def n 01)
#'user/n
...
(def n 07)
#'user/n
BUT
(def n 08)
clojure.lang.LispReader$ReaderException:
java.lang.NumberFormatException: Invalid number: 0
Isn't this supposed to work?
(defn create-layout []
(proxy [java.awt.LayoutManager] []
(addLayoutComponent [name comp]
(println "Called addLayoutComponent"))
(removeLayoutComponent [comp]
(println "Called removeLayoutComponent
http://googleappengine.blogspot.com/2009/04/many-languages-and-in-runtime-bind-them.html
As a demo of JVM languages running on the Google App Engine, they
included a Clojure REPL.
Getting more mainstream, it would seem...
--~--~-~--~~~---~--~~
You received this me
But couldn't you just write some macros to wrap a message-passing
framework and have it be part of the language, for all practical
purposes? It would seem that this falls under the category "if you
want it, just do it".
If anything, Clojure is potentially more powerful than Erlang for this
kind o
I am coming to Clojure from the Java side, and am completely ignorant
about lisp indentation & newline conventions.
Some things are easy to pick up from posted examples and common
sense...newline + tab after the parameters vector when defining a
function, etc.
But I did some web searches on lisp
My vote is for Swing. Despite its flaws, it's the Java standard -
there's no need to worry about compatibility (SWT) or licensing
(Jambi) issues, and there's a wealth of material online to study it
further. It's included with Java, which is a huge plus in a tutorial
setting - personally, I'd be ve
So, I'm trying to understand functional programming, particularly as
it relates to the seq abstraction, and I'm hitting a slight difficulty
as I'm playing around - something that seems as if it ought to be
simple, is not.
I'm playing with copying one seq into another. I've found several
different
HTH,
>
> --
> Laurent
>
> On 13 déc, 04:41, mago wrote:
>
> > I guess one answer to your question would be: If the seq is persistent
> > (immutable) why would you need to make a copy of it?
>
> > On Dec 12, 8:51 pm, levand wrote:
>
> > > So, I&
lementation actually doubly-
linked?
Thanks for the reply, Rich! I am really impressed by what you've done
with Clojure.
-Luke
On Dec 13, 9:28 am, Rich Hickey wrote:
> On Dec 12, 9:51 pm, levand wrote:
>
>
>
> > So, I'm trying to understand functional programming, par
Dec 13, 6:35 pm, Randall R Schulz wrote:
> On Saturday 13 December 2008 14:29, levand wrote:
>
> > > ...
>
> > > Calling reverse when done is still O(N)
>
> > Really? Maybe my grasp of big-O notation is faulty, but isn't the
> > recursive function itse
I must say, this is absolutely the first thing I've found about
Clojure that is difficult or cumbersome - I've been more than pleased
with how easy everything else has been. I'm a new to Emacs+Slime, and
their learning curve has been the most difficult part, but so far I've
overcome everything.
H
You, sir, are a genius. Thank you! Your blog posts on clojure+slime
are excellent, too... this is what I get for trying to run with my own
setup instead of just following your example.
Many thanks,
-Luke
On Dec 18, 10:16 pm, "Bill Clementson" wrote:
> On Thu, Dec 18, 2008 at 7:
I noticed this first with a project I'm working on, and verified that
it is happening as well with the temperature converter demo on the
clojure site.
After I run the file from within Slime, after a few seconds my Swing
gui stops responding, and the Repl as well. Apparently, the whole Java
proces
to
enclojure for windows development because of this, although I'd much
rather use emacs, now that I'm just getting used to it.
Thanks,
-Luke
On Dec 19, 3:18 pm, levand wrote:
> I noticed this first with a project I'm working on, and verified that
> it is happening as w
Yeah, thanks for the suggestion, but that's not it... I can see the
Swing window, and it is also hung (it doesn't process events from the
OS).
I'm going to do some more in-depth debugging today, doing stack dumps
and such, and see if I can figure out what's locking.
Thanks,
-Luke
On Dec 22, 3:5
is that something is blocking on the input stream from
the Repl, and preventing events from being processed by the event-
handling thread. As soon as something is entered in the Repl, it
somehow clears this state and starts working again.
Any thoughts on how to fix it?
Thanks,
-Luke
On Dec 23, 9:
Wow... that actually fixes it. Still a minor problem, since according
to the Sun website, it is legal to create a Swing object in another
thread as long as long as it is not "realized" yet...
Still, this definitely is a doable workaround. Thanks!
-Luke
On Dec 29, 9:17 pm, Rowdy Rednose wrote:
Has anyone here had success in using Clojure with QT Jambi?
I'm currently experimenting with porting my app from Swing to QT, and
although Jambi might well be the theoretically superior framework, it
seems like Swing is a lot easier to use with Clojure.
The issue I'm currently running into is th
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