To add one small addendum to Mark's excellent comment, if you use lazy-
seq then you don't need to worry about the nil from when
On Jul 24, 12:01 pm, Mark Engelberg wrote:
> On Sat, Jul 24, 2010 at 11:45 AM, Mark Engelberg
>
> wrote:
> > The simplest translation is to wrap a lazy-seq around the
Thank you, Mark. It's awesome when someone has the patience, time and
interest in putting something like this together so others may learn
faster. I know I'll benefit from it.
- Ryan
(irc nick arkh)
On Sat, Jul 24, 2010 at 2:30 AM, Mark McGranaghan wrote:
> Hi All,
>
> I recently posted to my
On Sat, Jul 24, 2010 at 11:45 AM, Mark Engelberg
wrote:
> The simplest translation is to wrap a lazy-seq around the last line to
> avoid the stack overflows.
Just to clarify, there are at least three reasonable places to place
the call to lazy-seq. You can put lazy-seq around the full body of
th
The simplest translation is to wrap a lazy-seq around the last line to
avoid the stack overflows.
On Sat, Jul 24, 2010 at 8:41 AM, nickikt wrote:
> (defn scheme-remove-first [syb lst]
> (if (empty? lst)
> '()
> (if (= (first lst) syb)
> (rest lst)
> (cons (first lst) (scheme-remo
Hi,
One way to prevent the stack overflows is to wrap it in a lazy seq.
For example:
(defn remove-first [x coll]
(lazy-seq
(when (seq coll)
(let [[y & ys] coll]
(if (= target y)
ys
(cons y (remove-first x ys)))
On Saturday 24 July 2010 11
This is a well-known Log4j issue (but don't worry, this is only a
warning not an error). See here:
http://www.avajava.com/tutorials/lessons/how-do-i-initialize-log4j-in-a-web-application.html
http://www.avajava.com/tutorials/lessons/what-is-log4j-and-how-do-i-use-it.html
The easiest way to initi
You can safely ignore them.
What you are seeing is the startup log for the web/application server,
and it complains about the server log configuration.
But there's nothing there that stops the labrepl from working or that
you need to do anything about.
Regards
jf
On Jul 24, 6:58 am, Victor S wr
Here's my take:
(defn remove-first [x coll]
(let [[pre post] (split-with #(not= x %) coll)]
(concat (pre (rest post
On Jul 24, 11:41 am, nickikt wrote:
> Hallo all,
>
> I'm working trough Essentials of Programming Languages. I'm trying to
> right a function like this one:
>
> (defn sch
I see 2 things:
1) It's best to explicitly start your Swing UI on Swing's event dispatch
thread. The java code to do this is:
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new App(); // OR whatever you're started UI code is
}
It is probably happening because a bare bones JPanel is a white canvas
every time swing paints it, it paints a white canvas than your
routines paint over that giving you the flashing behavior, right way
to paint on a JPanel is to extend it using proxy and overwrite
paintComponent method, this is th
Hallo all,
I'm working trough Essentials of Programming Languages. I'm trying to
right a function like this one:
(defn scheme-remove-first [syb lst]
(if (empty? lst)
'()
(if (= (first lst) syb)
(rest lst)
(cons (first lst) (scheme-remove-first syb (rest lst))
in a idiom
Hi,
my problem is that during execution my presentation java applet is
flashing. There are many components which paint to a JPanel using it's
Graphics (.getGraphics). I think maybe the problem is that I don't
have any "paint everything now" routine..(I don't know which Java
routine to use, how I h
Well so far it works, I'm just confused by some of these java
errors...
- V
On Jul 23, 7:26 am, Laurent PETIT wrote:
> And may I add that "crazy easy labrepl installation for ccw" is around the
> corner:http://github.com/smuehlst/ccw/tree/labrepl-sample-project!
>
> 2010/7/23 Victor S
>
>
>
>
Hi Bill,
How about something like...
(filter #(every? true? ((juxt f g h) %)) my-list)
In the character sense it's not more terse than your original example,
but it is a little nicer to add additional functions to compare with.
Throwing it in a function could be useful too
(defn multi-filter
On Sat, Jul 24, 2010 at 3:30 AM, Mark McGranaghan wrote:
>
> http://mmcgrana.github.com/2010/07/develop-deploy-clojure-web-applications.html
This is great! :)
The tools and libraries have come a long way, now we just need more killer
documentation like this. Thanks for taking the time to do thi
j-g-faustus writes:
> I was apparently too late. Oh well :)
My apologies for pre-emptively stealing your idea :)
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Mark Triggs
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Hi All,
I recently posted to my blog on the process of developing and
deploying a simple Clojure web application:
http://mmcgrana.github.com/2010/07/develop-deploy-clojure-web-applications.html
The purpose of this post is twofold. The first is to provide some
documentation in the form of a compl
On Jul 24, 8:53 am, Mark Triggs wrote:
> I cheated and used 'every?' :)
I was apparently too late. Oh well :)
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Am 24.07.2010 um 08:23 schrieb Meikel Brandmeyer:
> (defn and-pred
> [& preds]
> (if-let [preds (seq preds)]
>(fn [x]
> (seq (drop-while identity (map #(% x) preds
>(constantly true)))
Ok. Switch brain on. Second try.
(defn and-pred
[& preds]
(fn [x]
(not (seq (drop-w
On Jul 23, 11:27 pm, ".Bill Smith" wrote:
> (filter #(and (f %) (g %) (h %)) my-list)
Here's another one, just to add to the collection:
(defn andp [& fns]
(fn [& args]
(every? #(apply % args) fns)))
(filter (andp f g h) my-list)
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