On Jan 2, 5:39 pm, "Mark Volkmann" wrote:
> For anyone still following this, the latest code that incorporates
> many of the suggestions I've received here is
> athttp://www.ociweb.com/mark/programming/ClojureSnake.html, replacing my
> original version. It now uses refs. I think I have the dosyn
John,
I was looking around at your tests just to get a feel for using the test-is
stuff in the contrib library. I noticed that when I ran main.clj it would
run
not only the tests in clj-record, but all of the tests in the
clojure.contrib
as well. I was curious so I attempted to figure out what w
Ah, another left field idea:
if you test the namespace you will find running from REPL the
namespace will be user
running from the command will be clojure.core
I'm certain that will work as I've tested it in the past.
Bit of a hack, but should do the job.
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http://www.cs.brown.edu/research/plt/software/divascheme/
or
http://www.youtube.com/watch?v=GnQV4je9wTQ
Just for some inspiration :)
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I don't know much about functional programming, but I believe you're
supposed to think about functions as black boxes. Put something in, get
something out.
Take this function, for example:
(defn snake-head [] (first (@snake :body)))
(We're cheating on the put something in part!)
Perhaps it'd
For anyone still following this, the latest code that incorporates
many of the suggestions I've received here is at
http://www.ociweb.com/mark/programming/ClojureSnake.html, replacing my
original version. It now uses refs. I think I have the dosyncs
optimally placed. Feedback still welcomed! Can I
I don't think you need the declare line in your example, since the
recursive references are inside of closures.
I think your code is already very elegant, in the sense that it almost
directly mirrors the mathematical definition of the sequences. There
are probably ways to make it more efficient
Chouser writes:
> I've added shell-out to clojure-contrib, with an 'sh' function that
> allows usage like:
This is great; I was wondering where such a function was a couple weeks
ago.
Thanks!
-Phil
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On Fri, Jan 2, 2009 at 5:40 PM, lpetit wrote:
>
> Hello,
>
> here are some feedbacks :
>
> I suggest you should create a namespace for the code of the game
> ('cause you want to show clojure good coding practices, as well as
> good coding conventions, won't you ;-)
Right! Thanks for the suggesti
On Fri, Jan 2, 2009 at 5:29 PM, lpetit wrote:
>
> Yes, what you did should certainly be called "Intentional
> programming" (or "Intention revealing programming") instead of
> "literate programming".
I was considering referring to "intentional" rather than "literate"
until I saw this in the Wikip
Java arrays are mutable. If you pass them around, everything in
Clojure that relies on the assumption of immutability stops working.
How big is your array? Does the Java API continue to hold on to it?
Stuart
>> From http://clojure.org/java_interop#toc27 :
>
> "Clojure supports the creation, r
Hello,
here are some feedbacks :
I suggest you should create a namespace for the code of the game
('cause you want to show clojure good coding practices, as well as
good coding conventions, won't you ;-)
Could it make sense to use even fewer def's than currently ?
I guess it could be made not m
>From http://clojure.org/java_interop#toc27 :
"Clojure supports the creation, reading and modification of Java arrays.
It is recommended that you limit use of arrays to interop with Java
libraries that require them as arguments or use them as return values."
What are the reasons for this caveat?
Yes, what you did should certainly be called "Intentional
programming" (or "Intention revealing programming") instead of
"literate programming".
This style of programming is for example encouraged by the book "Clean
Code" of Robert C. Martin.
I like this style of programming, I too think it is c
Hi Mike,
Thanks for your interest. clj-backtrace is developed and tested
against Clojure head, though it should work with reasonably recent
versions of Clojure. I hope that you and other Clojure users have a
chance to try it out in your environments and report the results back
to the group.
I wo
On Fri, Jan 2, 2009 at 4:48 PM, Chouser wrote:
>
> On Fri, Jan 2, 2009 at 5:20 PM, Mark Volkmann
> wrote:
>>
>> On Fri, Jan 2, 2009 at 4:04 PM, Chouser wrote:
>>>
>>> I don't feel I have much authority in the realm of designing
>>> concurrent programs, but here are a couple thoughts:
>>>
>>> I
On Fri, Jan 2, 2009 at 4:38 PM, Randall R Schulz wrote:
>
> On Friday 02 January 2009 14:23, Christian Vest Hansen wrote:
>> What is it that makes this code "literate"?
>
> I don't know whether or not you're familiar with the concept of Literate
> Programming. If you are, then you can judge for y
On Fri, Jan 2, 2009 at 5:20 PM, Mark Volkmann wrote:
>
> On Fri, Jan 2, 2009 at 4:04 PM, Chouser wrote:
>>
>> I don't feel I have much authority in the realm of designing
>> concurrent programs, but here are a couple thoughts:
>>
>> It seems to me that 'apple' and 'snake' together describe the s
On Fri, Jan 2, 2009 at 4:20 PM, Timothy Pratley
wrote:
>
> I suspect that *command-line-arguments* would have "myapp.clj" as the
> 0th element in the
> clj myapp.clj
> Can't test right now though sorry.
Good idea! Unfortunately it seems that *command-line-args* is nil
regardless of whether I loa
On Friday 02 January 2009 14:23, Christian Vest Hansen wrote:
> What is it that makes this code "literate"?
I don't know whether or not you're familiar with the concept of Literate
Programming. If you are, then you can judge for yourself whether that
code qualifies as literate. If not, check ou
How would you implement the Hofstadter Male and Female sequences
*elegantly* in Clojure? Here's a starting point:
(declare h-male h-female)
(defn h-male [n]
(if (= n 0)
0
(- n (h-female (h-male (dec n))
(defn h-female [n]
(if (= n 0)
1
(- n (h-male (
On Fri, Jan 2, 2009 at 4:23 PM, Christian Vest Hansen
wrote:
>
> What is it that makes this code "literate"?
Perhaps my understanding of the term is a bit off. What makes this
code different from most Clojure code I see is that the functions tend
to be very short and focused. I think this makes
What is it that makes this code "literate"?
On Fri, Jan 2, 2009 at 8:07 PM, Mark Volkmann wrote:
>
> I've written a new version of the snake program that uses a more
> literate style and therefore, to my eyes, calls for far fewer
> comments. I think this code is very readable. Check it out at
>
I suspect that *command-line-arguments* would have "myapp.clj" as the
0th element in the
clj myapp.clj
Can't test right now though sorry.
On Jan 3, 3:34 am, "Mark Volkmann" wrote:
> I have a file of Clojure code that I'd like to experiment with in the
> REPL. I use (load file-path) to do that a
On Fri, Jan 2, 2009 at 4:04 PM, Chouser wrote:
>
> n Fri, Jan 2, 2009 at 4:47 PM, Mark Volkmann
> wrote:
>>
>> On Fri, Jan 2, 2009 at 3:09 PM, Chouser wrote:
>>>
>>> On Fri, Jan 2, 2009 at 4:05 PM, Tom Ayerst wrote:
That def inside a function doesn't look right but I'm a noob at this too
Hello,
I have recently put together a Debian package for clojure. The package
may also work on Ubuntu however this is untested. It may be downloaded
from:
http://www.pcc.me.uk/~peter/debian/clojure_0.0.20081217-1_all.deb
You may also be interested in the "source package" which is downloadabl
n Fri, Jan 2, 2009 at 4:47 PM, Mark Volkmann wrote:
>
> On Fri, Jan 2, 2009 at 3:09 PM, Chouser wrote:
>>
>> On Fri, Jan 2, 2009 at 4:05 PM, Tom Ayerst wrote:
>>> That def inside a function doesn't look right but I'm a noob at this too. I
>>> managed to run the snake off the board which sugges
On Fri, Jan 2, 2009 at 3:08 PM, Tom Ayerst wrote:
> Also; I think the 'get' is necessary on the get-snake-head and
> get-snake-body.
I assume you meant that "get-" is NOT necessary. I considered that,
but I wanted the names of my functions that were not predicates to be
verb-like. For example, t
On Fri, Jan 2, 2009 at 3:05 PM, Tom Ayerst wrote:
> That def inside a function doesn't look right but I'm a noob at this too. I
> managed to run the snake off the board which suggests the concurrency is not
> quite right.
Interesting. I can't duplicate that.
> I would use 'cell' instead of 'gr
On Fri, Jan 2, 2009 at 3:09 PM, Chouser wrote:
>
> On Fri, Jan 2, 2009 at 4:05 PM, Tom Ayerst wrote:
>> That def inside a function doesn't look right but I'm a noob at this too. I
>> managed to run the snake off the board which suggests the concurrency is not
>> quite right.
>
> Calling 'def' t
Hi,
I don't have Clojure in front of me right now to try this out, but
from the looks of the README let me be the first to give you an
emphatic *Thank you*.
This is looking rather useful. Nice work.
My one concern with this is how brittle is this with respect to
Clojure's development? Have you
On Fri, Jan 2, 2009 at 4:05 PM, Tom Ayerst wrote:
> That def inside a function doesn't look right but I'm a noob at this too. I
> managed to run the snake off the board which suggests the concurrency is not
> quite right.
Calling 'def' to like this is much worse than a lack of comments,
especia
Also; I think the 'get' is necessary on the get-snake-head and
get-snake-body.
2009/1/2 Tom Ayerst
> That def inside a function doesn't look right but I'm a noob at this too.
> I managed to run the snake off the board which suggests the concurrency is
> not quite right.
>
> I would use 'cell' in
That def inside a function doesn't look right but I'm a noob at this too. I
managed to run the snake off the board which suggests the concurrency is not
quite right.
I would use 'cell' instead of 'grid'.
Cheers
Tom
2009/1/2 Mark Volkmann
>
> I've written a new version of the snake program th
I found the cause of the second problem. All of the backslashes needed to
be escaped. I tried a manual setlocal and then the value of complete didn't
have any backslashes. It works if I escape the backslashes or if I use
forward slashes though. So if I can change the code to just use forward
sl
Hi,
Am 02.01.2009 um 21:06 schrieb Justin Johnson:
I reinstalled Vim to C:\Vim and reinstalled VimClojure as well. This
time I don't get the errors while opening a .clj file, but completion
still is not working. Control-N completes things based on what's
already in my file but not using anyth
On Jan 2, 11:07 am, "Mark Volkmann" wrote:
> The most controversial thing about this code is probably my use of def
> to change the state of the snake and the apple. It's not yet clear to
> me that using atoms is needed here, but I need to think about that
> more.
Not atoms, refs. Or agents for
I reinstalled Vim to C:\Vim and reinstalled VimClojure as well. This time I
don't get the errors while opening a .clj file, but completion still is not
working. Control-N completes things based on what's already in my file but
not using anything from Clojure. Am I doing something wrong, or is it
It looks like my change below just got rid of the errors. However the
completion functionality is not working. :(
On Fri, Jan 2, 2009 at 1:13 PM, Justin Johnson wrote:
> I got it working by adding double quotes around the path, as can be seen in
> the "let" line of the function below.
>
> funct
I got it working by adding double quotes around the path, as can be seen in
the "let" line of the function below.
function! vimclojure#AddCompletions(ns)
let completions = split(globpath("\"" . &rtp,
"ftplugin/clojure/completions-" . a:ns . ".txt\""), '\n')
if completions != []
cal
I've written a new version of the snake program that uses a more
literate style and therefore, to my eyes, calls for far fewer
comments. I think this code is very readable. Check it out at
http://www.ociweb.com/mark/programming/ClojureLiterateSnake.html.
Feedback is welcomed!
The most controversi
I don't know if the function exists on its own in Common Lisp, but in
Common Lisp there is maplist that does what you get by combining map
and rests : http://www.lispworks.com/documentation/HyperSpec/Body/f_mapc_.htm
HTH,
--
Laurent
On Jan 2, 7:21 pm, "Andrew Baine" wrote:
> On Fri, Jan 2, 200
D'oh! I have a hard time kicking out that old habit. And changing code
after testing it too!
On Jan 2, 4:21 am, "Christian Vest Hansen"
wrote:
> Well, one thing that sticks out (particularly to me) is the fact that
> you forgot to put your doc-string *before* your [params*] list :)
> (ahem)
>
>
On Jan 2, 11:27 am, "Stephen C. Gilardi" wrote:
> On Jan 2, 2009, at 11:51 AM, Rayne wrote:
>
> > I checked, and the classpath (compile-path) is the "classes" directory
> > in my clojure folder, so I put the file in there, and tried to compile
> > it, it gave me
>
> You'll need to learn a bit a
On Fri, Jan 2, 2009 at 8:09 AM, Perry Trolard wrote:
>
> I did something similar using (iterate rest coll), which I called iter-
> rest:
>
> (defn iter-rest
> "Takes the first (count coll) items from call to (iterate rest
> coll).
> If passed function as first argument, calls it on each invoc
> From the Repl try: (.printStackTrace *e)
Thanks!
>> The thing is, I want to store the actual *function* not the symbol
>> referencing the function (the symbol's reference changes after the
>> macro is evaluated).
>
> 1:10 user=> (defmacro tracefn
> "Creates trace logging of calls to a functio
Hi all,
Here is the code from Stu's CL translation.
(defmacro check [& forms]
`(do
~@(map (fn [f] `(report-result ~f '~f)) forms)))
And report-result is:
(defn report-result [result form]
(println (format "%s: %s" (if result "pass" "FAIL") (pr-str form
An example run is:
(chec
Hi,
Am 02.01.2009 um 18:00 schrieb Eric Tschetter:
From the Repl try: (.printStackTrace *e)
The thing is, I want to store the actual *function* not the symbol
referencing the function (the symbol's reference changes after the
macro is evaluated).
1:10 user=> (defmacro tracefn
"Creates trac
On Jan 2, 2009, at 11:51 AM, Rayne wrote:
I checked, and the classpath (compile-path) is the "classes" directory
in my clojure folder, so I put the file in there, and tried to compile
it, it gave me
You'll need to learn a bit about Classpath to work with Clojure.
Basically, Classpath is a l
On Jan 2, 11:02 am, Meikel Brandmeyer wrote:
> Hi,
>
> Am 02.01.2009 um 17:37 schrieb Rayne:
>
> > The compilation produced 2 different class files,
> > but it gave me a class not found error saying it couldn't find rayne
> > $_main__32.class. It produced the class files, but gave me an error..
Hi,
Am 02.01.2009 um 17:37 schrieb Rayne:
The compilation produced 2 different class files,
but it gave me a class not found error saying it couldn't find rayne
$_main__32.class. It produced the class files, but gave me an error..
O_o. I'm on a windows vista PC by the way, thanks.
Make sure t
> When you look at the backtrace of the exception you will find
> (very far down the trace) lines like "caused by..". There you
> normally find more useful information than "ExceptionInInitializer".
I don't get a backtrace, all I get is what I put in the original
message. How do I turn on full b
Hi Justin,
Am 02.01.2009 um 17:00 schrieb Justin Johnson:
E539: Illegal character : complete+=kC:\Program\ Files\Vim
\vimfiles\ftplugin\clojure\completions-clojure.core.txt
The problem is the space in "Program Files". I'm
not sure, whether this can be fixed at all on my
side, or whether this
On Thu, Jan 1, 2009 at 11:23 AM, Meikel Brandmeyer wrote:
> a long overdue release of VimClojure is available.
Thanks, works great!
--Chouser
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To pos
On Jan 2, 10:44 am, "Stephen C. Gilardi" wrote:
> On Jan 2, 2009, at 11:37 AM, Rayne wrote:
>
> > into a file called rayne.clj and started it clojure, and typed
> > (compile 'rayne). The compilation produced 2 different class files,
> > but it gave me a class not found error saying it couldn't
On Jan 2, 2009, at 11:37 AM, Rayne wrote:
into a file called rayne.clj and started it clojure, and typed
(compile 'rayne). The compilation produced 2 different class files,
but it gave me a class not found error saying it couldn't find rayne
$_main__32.class. It produced the class files, but ga
I already made a post about problems compiling with emacs, but I
suppose I'm the only one whos having this problem and no one knows how
to fix it. I was testing out compilation into class files with clojure
a little while ago. I put
(ns rayne (:gen-class))
(defn -main [& args] (println("HI")))
i
I have a file of Clojure code that I'd like to experiment with in the
REPL. I use (load file-path) to do that and then I can try out the
functions it defines. At the bottom of the file it calls the functions
required to run my application. Is there a way I can write the code so
it only runs my app
I did something similar using (iterate rest coll), which I called iter-
rest:
(defn iter-rest
"Takes the first (count coll) items from call to (iterate rest
coll).
If passed function as first argument, calls it on each invocation
of
rest, i.e. (iterate #(func (rest %)) coll)."
([coll]
Hi Meikel,
I am running Vim 7.2 on Windows XP and am not able to get the completion
working in VimClojure. I get errors when trying to edit a .clj file. These
errors always occur unless I comment out the code in clojure.vim that adds
the completions. The errors I'm getting with VimClojure 1.3.0
On Dec 12 2008, 3:35 pm, Christophe Grand
wrote:
> I was sure it was a job for iterate:
>
> (defn reductions
> "Returns a lazy seq of the intermediate values of the reduction (as
> per reduce) of coll by f, starting with init."
> ([f coll]
> (if (seq coll)
> (for [s (iterate (fn [[x
On Thu, Jan 1, 2009 at 10:14 PM, Andrew Baine wrote:
> I want to get a seq of successive rests of the given seq:
> user> (defn f [seq]
> (if (empty? seq)
> nil
> (lazy-cons seq (f (rest seq)
> #'user/f
> user> (f '(1 2 3 4))
> ((1 2 3 4) (2 3 4) (3 4) (4))
Hi,
Haskell has "tails" in the D
On Thu, Jan 1, 2009 at 10:14 PM, Andrew Baine wrote:
> I want to get a seq of successive rests of the given seq:
> user> (defn f [seq]
> (if (empty? seq)
> nil
> (lazy-cons seq (f (rest seq)
> #'user/f
> user> (f '(1 2 3 4))
> ((1 2 3 4) (2 3 4) (3 4) (4))
That's very similar to "tails" in
Issue 29 created with patch attached:
http://code.google.com/p/clojure/issues/detail?id=29
On Dec 14 2008, 1:29 am, Olov Lassus wrote:
> Hi,
> Here's another patch from me:
>
> The clojure.lang.Range type is implemented with integer type start and
> end indices. The core.clj range function sh
Issue 28 created with patch attached:
http://code.google.com/p/clojure/issues/detail?id=28
On Dec 14 2008, 12:42 am, Olov Lassus wrote:
> Hi,
> thanks for Clojure! Here's my first contribution (CA filled out and
> will arrive next week):
>
> Negating Integer.MIN_VALUE overflows but should ret
Hi again,
Am 02.01.2009 um 03:37 schrieb Eric Tschetter:
user=> (defmacro tracefn [function-name]
"Creates trace logging of calls to a function."
And another minor issue: the docstring goes in
front of the argument vector, because Clojure
allows also variable arity.
(defn foo
"doc
Hi,
Am 02.01.2009 um 03:37 schrieb Eric Tschetter:
When you look at the backtrace of the exception you will find
(very far down the trace) lines like "caused by..". There you
normally find more useful information than "ExceptionInInitializer".
user=> (defmacro tracefn [function-name]
"Creates
Well, one thing that sticks out (particularly to me) is the fact that
you forgot to put your doc-string *before* your [params*] list :)
(ahem)
On Fri, Jan 2, 2009 at 8:21 AM, budu wrote:
>
> Hi, I was experimenting with clojure-contrib's sql features and found
> that there wasn't any update-valu
On Jan 2, 12:46 am, "Mark H." wrote:
> I've written a pseudorandom number generator for arbitrarily large
> integers, as well as a number of other utilities for pseudorandom
> numbers.
Other features:
* Function to generate a random seed, using either Java's SecureRandom
or your own entropy s
I've written a pseudorandom number generator for arbitrarily large
integers, as well as a number of other utilities for pseudorandom
numbers. Features:
* Everything is a lazy seq
* Gaussian (mean 0, variance 1) - pseudorandom doubles
* Arbitrarily large pseudorandom uniformly distributed integer
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