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
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 LF,
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) (op2
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
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:
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
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
déc, 04:41, mago mago...@gmail.com 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 luke.vanderh...@gmail.com wrote:
So, I'm trying to understand functional programming
for the reply, Rich! I am really impressed by what you've done
with Clojure.
-Luke
On Dec 13, 9:28 am, Rich Hickey richhic...@gmail.com wrote:
On Dec 12, 9:51 pm, levand luke.vanderh...@gmail.com wrote:
So, I'm trying to understand functional programming, particularly as
it relates to the seq
, Randall R Schulz rsch...@sonic.net 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 itself O(n), and then a reversal another O(n)
operation on top
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
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,
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, 9:28 am, levand
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
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
19 matches
Mail list logo
