Since Amotoen does everything that clj-peg did, and since Amotoen does
it in a more maintainable way...
http://github.com/richard-lyman/amotoen
-Rich
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This comes up on the list every few months. In Clojure, this is a
code smell that you should be using the destructuring constructs
instead.
On Aug 16, 3:31 am, Alan wrote:
> (defn apply-keys [f ks]
> (zipmap ks (map f ks)))
>
> Trivial to write, but it can be quite useful. For example:
> (defn
You might be interested in this library:
http://github.com/neotyk/ahc-clj
It's a clojure layer on top of some nice Java libs for doing
asynchronous HTTP.
-Jeff
On Aug 16, 11:12 pm, leo wrote:
> I am trying to understand how efficient it would be to use Clojure to
> develop an asynchronous http
First:
http://github.com/richard-lyman/amotoen
Second:
Amotoen is a Clojure library that supports PEG style definitions of
grammars that can produce parsers. While there are academic papers
available that rigorously define PEG, I've found that PEGs, or Parsing
Expression Grammar(s), are best exp
On Aug 16, 2010, at 10:56 AM, Chouser wrote:
> If you *are* actually using continue or continue-with, I'd be very
> interested to know your actual use cases.
I thought I did, but as I wrote up the use case, I think I've convinced myself
I was wrong. I'll let you know if I change my mind again.
I am trying to understand how efficient it would be to use Clojure to
develop an asynchronous http client for my webapp instead of using
Java. Is there any specific way one can be better than the other?
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Actually, it started working with require, and as far as I'm concerned,
I've done nothing to fix the problem.
On Mon, 16 Aug 2010 20:06:32 +0200, Luka Stojanovic
wrote:
I have same problem:
I'm using NetBeans 6.9.1/Enclojure, clojure-SNAPSHOT, running on Ubuntu
10.04
If I create Cloj
No worries :)
On Aug 16, 12:55 pm, Timothy Washington wrote:
> Ahh, my bad.
>
> Cheers
> Tim
>
>
>
> On Sun, Aug 15, 2010 at 8:40 PM, Btsai wrote:
> > I think the mismatch is because page you looked at is for
> > clojure.string, not clojure-contrib.string. The documentation for the
> > split fr
Ah, that's all it was. I thought it was available after I saw someone
suggest using clojure 1.2. After changing to use RC3, swank
(especially swank.core/break) works beautifully. Thanks!
On Aug 16, 11:23 am, Saul Hazledine wrote:
> Aug 16, 8:03 pm, Alan wrote:
>
>
>
> > $ cat project.clj
> > (de
Sorry for the double-post. group-by actually maps outputs to inputs.
But you can run into trouble even with referentially transparent
functions, because of Clojure's equality semantics:
user=> (def x [(list :a) (vector :a)])
#'user/x
user=> (zipmap x (map class x))
{(:a) clojure.lang.PersistentVec
Note that if f is not referentially transparent, you can get different
results depending on the order in which the collection is traversed,
for unordered collections. See the API function group-by. It makes
this behavior explicit by mapping each input argument to a vector of
output arguments, in th
Hello,
I work with text files that are, at times, too large to read in all
at one time. In searching for a way to read in only part of the file
I came across
http://meshy.org/2009/12/13/widefinder-2-with-clojure.html
I am only interested in the chunk-file and read-lines-range functions.
My pro
On Aug 16, 2010, at 4:13 PM, Meikel Brandmeyer wrote:
> Every descent editor should provide a comment-selected-text functionality. So
> whether multiline comments or single comments are used should be an
> implementation detail. You also have to get (* *) (OCaml) nested and with /*
> */ (C) you
On Mon, Aug 16, 2010 at 11:54 AM, HB wrote:
> Excellent explanation, thanks Nicolas :)
> Are Refs unique to Clojure or they exist in all Lisps?
>
>
They are a big part of why Clojure was created in the first place.
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Hi,
Am 16.08.2010 um 21:13 schrieb Lee Spector:
> I'm finding that ;, #_, and (comment ...) generally suffice but every once in
> a while I do miss having block comments (like /* ... */, or Common Lisp's #|
> ... |#), e.g. when I want to comment out a big chunk of partially-written
> code that
On Mon, Aug 16, 2010 at 18:26, Andrew Gwozdziewycz wrote:
> On Mon, Aug 16, 2010 at 3:34 AM, faenvie wrote:
>> hi clojure-users,
>>
>> i wonder what the reason is, that clojure(-reader)
>> does not allow
>>
>> 1. multiline-strings like scala:
>>
>> """this is a
>> | multiline string"""
>
> Yes
On Aug 16, 2010, at 10:02 AM, Grayswx wrote:
> For comments, there's (comment This is a comment ...). I'd say that
> eliminates the need for /* ... */.
Except that with (comment ...) the stuff in ... has to have balanced
parentheses (& possibly meet other constraints since it's being parsed?).
Ahh, my bad.
Cheers
Tim
On Sun, Aug 15, 2010 at 8:40 PM, Btsai wrote:
> I think the mismatch is because page you looked at is for
> clojure.string, not clojure-contrib.string. The documentation for the
> split from clojure-contrib.string is here:
>
>
> http://clojure.github.com/clojure-contri
2010/8/16 Alan :
> I hear that swank.core/break has more functionality in 1.2, so I am
> trying to upgrade to it, but I think I don't have a clear enough
> understanding of what is going on when lein/clojure run, as I am
> running into problems.
>
> $ cat project.clj
> (defproject ddsolve "1.0.0-SN
Aug 16, 8:03 pm, Alan wrote:
>
> $ cat project.clj
> (defproject ddsolve "1.0.0-SNAPSHOT"
> :description "FIXME: write"
> :dependencies [[org.clojure/clojure "1.2.0"]
> [org.clojure/clojure-contrib "1.2.0"]]
> :dev-dependencies [[swank-clojure "1.2.0"]])
You're doing everyt
I have same problem:
I'm using NetBeans 6.9.1/Enclojure, clojure-SNAPSHOT, running on Ubuntu
10.04
If I create Clojure project everything works OK. If I add Clojure scripts
in existing Java project (and copy appropriate parts of pom.xml into that
project) :require causes error as above, b
I hear that swank.core/break has more functionality in 1.2, so I am
trying to upgrade to it, but I think I don't have a clear enough
understanding of what is going on when lein/clojure run, as I am
running into problems.
$ cat project.clj
(defproject ddsolve "1.0.0-SNAPSHOT"
:description "FIXME:
Why don't you get yourself help from Rich himself:
Clojure Concurrency
http://clojure.blip.tv/file/812787/
here are the slides, the video doesn't show them:
http://clojure.googlegroups.com/web/ClojureConcurrencyTalk.pdf
There are other great talks here:
http://clojure.blip.tv/
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On Mon, Aug 16, 2010 at 3:34 AM, faenvie wrote:
> hi clojure-users,
>
> i wonder what the reason is, that clojure(-reader)
> does not allow
>
> 1. multiline-strings like scala:
>
> """this is a
> | multiline string"""
Yes. It does, if you plug this into your repl (
user=> (use '[clojure.contr
On 15 авг, 23:18, Steve Purcell wrote:
> > Could you share your nice color theme, please?
>
> Sure:
>
> http://github.com/purcell/emacs.d/blob/master/site-lisp/color-theme-s...
>
> There are light and dark versions, and I switch between them with "M-x light"
> and "M-x dark" depending on how my
hello alan.
This link may help you.
http://richhickey.github.com/clojure-contrib/index.html
BR
ChangMin Jeon
On Mon, Aug 16, 2010 at 4:31 PM, Alan wrote:
> (defn apply-keys [f ks]
> (zipmap ks (map f ks)))
>
> Trivial to write, but it can be quite useful. For example:
> (defn whatever [arg]
>
For comments, there's (comment This is a comment ...). I'd say that
eliminates the need for /* ... */.
On Aug 16, 3:34 am, faenvie wrote:
> hi clojure-users,
>
> i wonder what the reason is, that clojure(-reader)
> does not allow
>
> 1. multiline-strings like scala:
>
> """this is a
> | mult
/* this is a
multiline comment */
(comment This is a
multiline comment?)
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Correction: you will need the jdk on windows when using the 32 bit
build because the server jvm does not come with the 32 bit jre.
Perhaps I should just make it prefer the server jvm, not require it.
On Aug 15, 6:12 pm, mac wrote:
> On Aug 15, 6:02 pm, Wilson MacGyver wrote:> This still
> requi
On Mon, Aug 16, 2010 at 16:48, Rasmus Svensson wrote:
> 2010/8/16 Rasmus Svensson :
2. multiline comments like java
/* this is a
multiline comment */
>>>
>>> I don't know.
>>>
>>
>> Comment blocks are usually done by starting each line with ;;
>>
>> ;; this is
>> ;; a comment
In Common LISP, you can modify anything, anywhere.
In the ML family of language, there are refs, but, if they have the
same name, they do not share the concept. They are closer of
Clojure's atoms. There is no notion of transactions.
Haskell and a few other languages have Software Transactional M
On Mon, Aug 16, 2010 at 10:37 AM, Meikel Brandmeyer wrote:
> On 15 Aug., 23:41, Brian Marick wrote:
>
>> I have a need to catch and handle all Java Throwables except those used by
>> c.c.error-kit. I can identify an error-kit throwable like this:
>>
>> (re-find #"^Error Kit Control Exception"
Excellent explanation, thanks Nicolas :)
Are Refs unique to Clojure or they exist in all Lisps?
On Aug 16, 10:22 am, Nicolas Oury wrote:
> It's a clever box containing a value.
> You can open the box and read the current value.
> But you can't modify the content of the box directly.
>
> You need
On Aug 16, 8:31 am, Alan wrote:
> (defn apply-keys [f ks]
> (zipmap ks (map f ks)))
>
> Does this seem useful to anyone else?
It seems very similar to memoize in that you're mapping function
arguments to their results.
Saul
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On Sun, Aug 15, 2010 at 9:13 PM, nchubrich wrote:
> Thanks Rich--I'm actually interested in all kinds of configurations.
> For the time being, it will be a Flex frontend in the browser
> communicating with Clojure on the server. In the future, we might
> want to make the Clojure part into a Java
On Mon, Aug 16, 2010 at 16:33, Rasmus Svensson wrote:
>>> 2. multiline comments like java
>>>
>>> /* this is a
>>> multiline comment */
>>
>> I don't know.
>>
>
> Comment blocks are usually done by starting each line with ;;
>
> ;; this is
> ;; a comment
> ;; block
> (some-code)
>
> Anything aft
2010/8/16 Rasmus Svensson :
>>> 2. multiline comments like java
>>>
>>> /* this is a
>>> multiline comment */
>>
>> I don't know.
>>
>
> Comment blocks are usually done by starting each line with ;;
>
> ;; this is
> ;; a comment
> ;; block
> (some-code)
>
> Anything after a ; is a comment, like p
Hi,
On 15 Aug., 23:41, Brian Marick wrote:
> I have a need to catch and handle all Java Throwables except those used by
> c.c.error-kit. I can identify an error-kit throwable like this:
>
> (re-find #"^Error Kit Control Exception" (.toString e)))
>
> That does not fill me with joy. What's the
>> 2. multiline comments like java
>>
>> /* this is a
>> multiline comment */
>
> I don't know.
>
Comment blocks are usually done by starting each line with ;;
;; this is
;; a comment
;; block
(some-code)
Anything after a ; is a comment, like python's #. There is a
convention for how many ;s t
On 16 August 2010 09:34, faenvie wrote:
> hi clojure-users,
>
> i wonder what the reason is, that clojure(-reader)
> does not allow
>
> 1. multiline-strings like scala:
>
> """this is a
> | multiline string"""
user=> (def s "This is a
multiline string")
#'user/s
user=> s
"This is a\nmultiline
> Sadly I feel that I'm going to have to target development at the
> lowest common
> denominator that I think users will have (hence I'm targeting Java
> 1.5+)
>
Escape Analysis and GC tweeking does not need to change your code.
It is activated by option to the JVM.
It would be interesting to try
On Mon, Aug 16, 2010 at 3:29 AM, Matthew Phillips wrote:
> ;; Now, if I want any node's in-edges, I can't just call "in-edges"
> ;; because Node implementations won't have it, so I compute them in
> ;; that case.
> (defn node-in-edges [n]
> (if (isa? Node2)
> (in-edges n)
> (compute-node-in
On Aug 13, 5:33 pm, Alan wrote:
> Funny you should mention this - I was about to post a question about
> my own game when I saw your article. My issue is, I assume someone has
> written minimax and/or alpha-beta pruning in Clojure (or a java
> library that's easy to interop with). My case is sligh
Thanks, That worked.
Ivan Willig
818-212-4554
On Sun, Aug 15, 2010 at 11:56 AM, George Jahad wrote:
> try using clojure 1.2.
>
> On Aug 14, 11:56 am, Ivan Willig wrote:
> > Hi list,
> > I am trying to use swank.core/break while bugging. The break point gets
> > thrown but none of my local var
Yes, it helped! Thank you!
To make the story complete I put here complete code:
semantic/hello.clj:
(ns semantic.hello
(:gen-class
:name semantic.hello
:methods [[sayhello [] void]
[sayhello_arg [String] void]]))
(defn -sayhello [this] (println "Hello from Clojure!"))
On Aug 13, 7:16 pm, Nicolas Oury wrote:
> On Fri, Aug 13, 2010 at 2:51 PM, Mike Anderson
>
> wrote:
> > 2. It would be great to reduce the amount of memory allocations. Yes,
> > I know memory is plentiful and GC is very cheap, but it's still not as
> > cheap as stack allocation and any noticeable
On Aug 14, 2:39 am, Eric Lavigne wrote:
> I discussed two problems. The first problem, which you addressed, was
> mostly just a warm-up for discussing a related problem that is more
> severe. Where can I put (def g) so that two files can "require" each
> other?
I would say this is not a clojure s
On Aug 14, 12:38 am, BerlinBrown wrote:
> I played it, it was pretty fun.
>
> I have UI recommendations. I couldn't tell the difference between the
> enemy and my units.
>
> I wish maybe you had some quick tips and recommended next actions so I
> could get used to how the game works.
Thanks!
Gre
On Aug 14, 6:37 am, Wilson MacGyver wrote:
> I realize that. I was pondering why I don't run into the the 2nd problem.
>
> In your code, how many files/name spaces are you creating?
> And how many lines of code are in each file? I'm curious how you
> organize your code.
Sure - I'll give a quick s
On Aug 13, 7:06 pm, Brian Carper wrote:
> Looks great. Thanks for sharing your experiences.
>
> Do you plan to share the source code? Any reason you went with Swing
> instead of OpenGL?
>
Main reason I went with Swing was wanting to get something up and
running quickly (this is my first Clojur
hi clojure-users,
i wonder what the reason is, that clojure(-reader)
does not allow
1. multiline-strings like scala:
"""this is a
| multiline string"""
2. multiline comments like java
/* this is a
multiline comment */
someone who can explain or point
to relevant info ?
thanks
--
You
(defn apply-keys [f ks]
(zipmap ks (map f ks)))
Trivial to write, but it can be quite useful. For example:
(defn whatever [arg]
(let [some-list (make-list-from arg)
mapped (map myfunc some-list)]
(zipmap some-list mapped)))
compared to
(defn whatever [arg]
(apply-keys myfunc (m
Thanks Rich--I'm actually interested in all kinds of configurations.
For the time being, it will be a Flex frontend in the browser
communicating with Clojure on the server. In the future, we might
want to make the Clojure part into a Java applet that runs on the
client side and does computations w
Yes, Haskell type classes are the sort of thing I have in mind here I
think. On a type class you can specify default implementations of any
or all of the functions, and they can even refer to themselves
cyclically (e.g the Eq class where == and /= are defined as each
other's complements): the insta
Hi,
The latest London Clojure Dojo will be at our usual venue, Thoughworks
on High Holborn on 31 August. Free beer and pizza will be supplied by
Thoughtworks. We'll supply our own code.
We happily welcome everyone from the confused through to the expert.
Come along and code with us.
The sign up
Thanks to all of you who responded.
So, I think my original thesis was correct: I'm clearly misconstruing
something quite fundamental here ;)
And I can see now my original example was clumsy: for example
something like PrettyPrintable *should* be an orthogonal protocol to
Node. (Not to mention th
I think the mismatch is because page you looked at is for
clojure.string, not clojure-contrib.string. The documentation for the
split from clojure-contrib.string is here:
http://clojure.github.com/clojure-contrib/string-api.html#clojure.contrib.string/split
On Aug 15, 5:12 pm, Timothy Washington
I have a need to catch and handle all Java Throwables except those used by
c.c.error-kit. I can identify an error-kit throwable like this:
(re-find #"^Error Kit Control Exception" (.toString e)))
That does not fill me with joy. What's the right way to do it?
-
Brian Marick, independent co
you'd import semantic.hello
then in your java code, you
would first create it by doing new semantic.hello()
then you can call it form java by doing
.sayhello() without the -
you also need to define your sayhello differently I think.
it needs to be (defn -sayhello [this] (println "Hello from
cl
On Mon, Aug 16, 2010 at 3:37 PM, Nicolas Oury wrote:
> On Mon, Aug 16, 2010 at 10:51 AM, Martin DeMello
> wrote:
>> Sometimes there's simply no way around it. For instance, I recently
>> had some python code that (stripped to its simplest form) had two
>> classes, Document and Attachment, where A
On Mon, Aug 16, 2010 at 10:51 AM, Martin DeMello
wrote:
> Sometimes there's simply no way around it. For instance, I recently
> had some python code that (stripped to its simplest form) had two
> classes, Document and Attachment, where Attachment was a specialised
> subclass of Document, but Docum
On Sun, Aug 15, 2010 at 8:13 PM, Brian Hurt wrote:
>
> Circular dependencies between modules is a major code smell. Code where
> everything depends upon everything, or even close to that, is
> unmaintainable.
Sometimes there's simply no way around it. For instance, I recently
had some python cod
It's a clever box containing a value.
You can open the box and read the current value.
But you can't modify the content of the box directly.
You need to change the value in a box in a transaction.
The cleverness of refs comes form the fact that all read and all write
in a transaction are consisten
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