Artificial Intelligence in Clojure
Hi, i'd like to write some AI in clojure. Reading Russel & Norvig's AI: A Modern Approach, which focuses heavily on autonomous intelligence agents. Has anyone worked with these or other AI in clojure? Any libraries/git repos out there? Can/should we use clojure agents to encapsulate separate interacting autonomous logical/rational agents? Finally, in which way should we organize an asynchronous simulation of a neural network using clojure concurrency? Are agents a good design idea here as well? I think I'd like to learn more about clojure's agents, where's a good place to study up? - max --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: clojure.contrib.except enhanced
On Sat, Jun 6, 2009 at 10:42 AM, Stephen C. Gilardi wrote: > I've checked in changes to clojure.contrib.except to allow the functions it > provides to produce exceptions that wrap other exceptions: they now support > "causes". > > I believe it's now fully general and will be convenient to use for all of > our exceptional needs. > > The attached text file contains a demo session at the repl showing some of > its features. This looks really easy to use, Stephen, thanks. Since the time I put the rather more top-heavy error-kit in contrib, it's become increasingly clear to me that hardly anybody (myself included) need or use the continue-with and bind-continue features it provides. That leaves as its only used feature the ability to define and catch custom error types that can be created without AOT compilation. But I'm starting to come around to what I think Rich has been pointing out all along: that having singly-typed errors is not necessarily a great idea. Clojure multi-methods don't require objects to have a single type after all -- you can dispatch on whatever you'd like. Why should exceptions be any different? So here's an idea: what if Clojure (or contrib for now) provided a single new Exception type that besides the normal error string also carried an object: probably a map with unspecified content (a bit like metadata is now). Then a lib like contrib.except could make it easy to toss bits of detail into the exception that could be read easily when caught. This would allow the simplicity that contrib.except provides now and would allow you to provide as much detail as an error-kit error without even having to declare an error type. Perhaps using it would look something like: (defn foo [x y] (if (neg? x) (throwf :source ::Args, :arg 'x, :value x, "The value x may not be negative") (+ x y))) (try (foo -5 10) (catch ClojureError e (if-not (isa? ::Args (:source e)) (throw e) (printf "Argument was incorrect:" e I suppose the catch clause could be augmented: (tryf (foo -5 10) (catchf [e] (isa? ::Args (:source e)) (printf "Argument was incorrect:" e))) ...or something. Any thoughts? --Chouser --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
It may help to review the code and structure of open source Clojure projects, part of the mind-bend feeling could be coming from struggling to know where to begin when writing code and less from unfamiliarity with the theory of FP. I'd also recommend playing with Haskell and reviewing "Real World Haskell" (http://book.realworldhaskell.org/). Even though Clojure has a focus on FP, other Lisps don't exhibit this; there are bits of FP that can be found in any programming language but with Haskell you'll be immersed in it. On Jun 6, 4:10 pm, Daniel Lyons wrote: > I recommend "Purely Functional Data Structures" by Chris Okasaki. If > you can get your hands on "OCaml for Scientists" it's pretty good too. > And of course The Little Lisper/Schemer. I haven't made it through my > copy of SICP or PAIP. > > -- > Daniel > > On Jun 6, 2009, at 10:26 AM, kyle smith wrote: > > > > > > > I read Norvig's PAIP. The concept of first defining a dsl and then > > writing an interpreter/compiler for it is amazing. Even something as > > simple as his sentence grammar shows the idea. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
> Going beyond the language-specific Programming Clojure book, what > other books have best helped you make the (sometimes mind-bending) I have not yet read anything more mind-bending than this: http://www.gp-field-guide.org.uk/ (A field guide to genetic programming) It is free download - the book is under Creative Commons license... A clojure example of the above is at: http://npcontemplation.blogspot.com/2009/01/clojure-genetic-mona-lisa-problem-in.html (but the code did not work in the latest clojure for me) Kind regards, Vlad PS: Apart from being a fascinating subject - the book made the "code is data" idea obvious... --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: improoved version of parallel factorial uploaded - is it possible to push the performance further?
Oops - the link above is broken, but the code is in the files section, called: parallel-factorial-example-2.clj Vlad --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
improoved version of parallel factorial uploaded - is it possible to push the performance further?
Hello, Just uploaded better version of parallel factorial... Is is possible to push the performance further (short of implementing parallel multiplication algorithm)? Comments welcome. http://groups.google.com/group/clojure/files/parallel-factorial-example-2.clj Kind regards, Vlad --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: with-open and java interoperability
Meikel Brandmeyer napisał(a): > Hi, > > Am 06.06.2009 um 21:40 schrieb Rob Wolfe: > > > I'm trying to understand why this program throws an exception: > > It doesn't work because > > > (-> (new StringReader "abc") > > (new clojure.lang.LineNumberingPushbackReader)) > > expands to > > (new (new StringReader "abc") LineNumberingPushbackReader) > > while > > (-> (StringReader. "abc") >(LineNumberingPushbackReader.)) > > expands to > > (LineNumberingPushbackReader. (StringReader. "abc")) > > which is equivalent to > > (new LineNumberingPushbackReader (new StringReader "abc")). > > Note the difference. Oh yes, of course, now I can see it. I will be careful with "->" macro next time. ;) Thanks for help. Br, Rob --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: with-open and java interoperability
Hi, Am 06.06.2009 um 21:40 schrieb Rob Wolfe: I'm trying to understand why this program throws an exception: It doesn't work because (-> (new StringReader "abc") (new clojure.lang.LineNumberingPushbackReader)) expands to (new (new StringReader "abc") LineNumberingPushbackReader) while (-> (StringReader. "abc") (LineNumberingPushbackReader.)) expands to (LineNumberingPushbackReader. (StringReader. "abc")) which is equivalent to (new LineNumberingPushbackReader (new StringReader "abc")). Note the difference. Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: What books have helped you wrap your brain around FP and Clojure?
I recommend "Purely Functional Data Structures" by Chris Okasaki. If you can get your hands on "OCaml for Scientists" it's pretty good too. And of course The Little Lisper/Schemer. I haven't made it through my copy of SICP or PAIP. -- Daniel On Jun 6, 2009, at 10:26 AM, kyle smith wrote: > > I read Norvig's PAIP. The concept of first defining a dsl and then > writing an interpreter/compiler for it is amazing. Even something as > simple as his sentence grammar shows the idea. > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
with-open and java interoperability
Hi, I'm trying to understand why this program throws an exception: $ clojure -e "(clojure-version)" "1.0.0-" $ cat test1.clj (ns rw.test (:import (java.io StringReader))) (def x (with-open [s (-> (new StringReader "abc") (new clojure.lang.LineNumberingPushbackReader))] (binding [*in* s] (read (println x) $ clojure test1.clj Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at jline.ConsoleRunner.main(Unknown Source) Caused by: java.lang.IllegalArgumentException: Unable to resolve classname: (new StringReader "abc") (test1.clj:4) whereas this one works without problems: $ clojure -e "(clojure-version)" "1.0.0-" $ cat test2.clj (ns rw.test (:import (java.io StringReader))) (def x (with-open [s (-> (StringReader. "abc") (clojure.lang.LineNumberingPushbackReader.))] (binding [*in* s] (read (println x) $ clojure test2.clj abc I thougth that "StringReader." and "new StringReader" are equivalent, right? So why these programs work differently? Br, Rob --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: c.c.swing-utils: action and menu builders
On Jun 6, 2009, at 12:34 PM, Meikel Brandmeyer wrote: as threatened before here a first stab at a small action and menu builder suite. It is inspired by what Waterfront does. You basically create a map describing the action or menu and let the builder functions create them for you. Added: http://code.google.com/p/clojure-contrib/source/detail?r=918 Thanks! --Steve smime.p7s Description: S/MIME cryptographic signature
c.c.swing-utils: action and menu builders
Hello Stephen and fellow Clojurians,
as threatened before here a first stab at a small action and menu
builder suite. It is inspired by what Waterfront does. You basically
create a map describing the action or menu and let the builder functions
create them for you. Example:
(let [frame(JFrame. "Example")
save-action (make-action
{:name "Save"
:mnemonic KeyEvent/VK_S
:long-desc "Save the file to disk. No-op if
file not modified"
:short-desc "Save file"
:handlersave-file-handler})
menubar-spec [{:name "File"
:mnemonic KeyEvent/VK_F
:items[{:action save-action}
{} ; <- adds a separator
{:name "Close Window"
:mnemonic KeyEvent/VK_W
:handler (fn [_] (.close frame))}]}
{:name "Help"
:mnemonic KeyEvent/VK_H
:items[{:name "About"
:mnemonic KeyEvent/VK_A
:handler (fn [_] (show-about))}]}]
menubar (make-menubar menubar-spec)]
(doto frame
(.setJMenbuBar menubar)
(.pack)
(.setVisible true)))
So the whole description is code. It can be put in IRefs and be
modified at runtime with the usual means.
Here's the code:
(defvar action-translation-table
(atom {:nameAction/NAME
:accelerator Action/ACCELERATOR_KEY
:command-key Action/ACTION_COMMAND_KEY
:long-desc Action/LONG_DESCRIPTION
:short-desc Action/SHORT_DESCRIPTION
:mnemonicAction/MNEMONIC_KEY
:iconAction/SMALL_ICON})
"Translation table for the make-action constructor.")
(defn make-action
"Create an Action proxy from the given action spec. The standard keys
recognised are: :name, :accelerator, :command-key, :long-
desc, :short-desc,
:mnemonic and :icon – corresponding to the similar named Action
properties.
The :handler value is used in the actionPerformed method of the
proxy to
pass on the event."
[spec]
(let [t-table @action-translation-table
handler (:handler spec)
spec(dissoc spec :handler)
spec(map (fn [[k v]] [(t-table k) v]) spec)
action (proxy [AbstractAction] []
(actionPerformed [evt] (handler evt)))]
(doseq [[k v] spec]
(.putValue action k v))
action))
(defvar menu-constructor-dispatch
(atom #{:action :handler :items})
"An atom containing the dispatch set for the add-menu-item method.")
(defmulti add-menu-item
"Adds a menu item to the parent according to the item description.
The item description is a map of the following structure.
Either:
- one single :action specifying a javax.swing.Action to be
associated
with the item.
- a specification suitable for make-action
- a set of :name, :mnemonic and :items keys, specifying a submenu
with
the given sequence of item entries.
- an empty map specifying a separator."
{:arglists '([parent item])}
(fn add-menu-item-dispatch [_ item]
(some @menu-constructor-dispatch (keys item
(defmethod add-menu-item :action
add-menu-item-action
[parent {:keys [action]}]
(let [item (JMenuItem. action)]
(.add parent item)))
(defmethod add-menu-item :handler
add-menu-item-handler
[parent spec]
(add-menu-item parent {:action (make-action spec)}))
(defmethod add-menu-item :items
add-menu-item-submenu
[parent {:keys [items mnemonic name]}]
(let [menu (JMenu. name)]
(when mnemonic
(.setMnemonic menu mnemonic))
(doseq [item items]
(add-menu-item menu item))
(.add parent menu)))
(defmethod add-menu-item nil ; nil meaning separator
add-menu-item-separator
[parent _]
(.addSeparator parent))
(defn make-menubar
"Create a menubar containing the given sequence of menu items. The
menu items
are described by a map as is detailed in the docstring of the add-
menu-item
function."
[menubar-items]
(let [menubar (JMenuBar.)]
(doseq [item menubar-items]
(add-menu-item menubar item))
menubar))
Sincerely
Meikel
smime.p7s
Description: S/MIME cryptographic signature
Re: VimClojure v2.1.1 is released
This is probably the global _vimrc installed by Vim I think as much, vim needs this file to run. If you installed Vim as an administrator I always work as administrator. I will create that file and now what and what am I going to add to it. Regards, Emeka O On Sat, Jun 6, 2009 at 4:03 PM, Meikel Brandmeyer wrote: > Hi, > > Am 06.06.2009 um 17:47 schrieb Emeka: > > Then it is pretty obvious that I have erred again. >> C:\Program files\Vim\_vimrc That's where I found that file. >> > > This is probably the global _vimrc installed by Vim. > You should first try a _vimrc in your home directory. > Just create it if it doesn't exist. If you installed Vim as > an administrator and now work as a "normal" user > that might explain, why you are not allowed to edit > the file. > > Sincerely > Meikel > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
I read Norvig's PAIP. The concept of first defining a dsl and then writing an interpreter/compiler for it is amazing. Even something as simple as his sentence grammar shows the idea. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
Higher Order Perl. While I don't want to use Perl anymore, I do know it very well, and it provided a good introduction to FP in a more familiar language. YMMV. Robert Campbell wrote: > Going beyond the language-specific Programming Clojure book, what > other books have best helped you make the (sometimes mind-bending) > transition from OOP thinking to FP thinking? My bookshelf is piled > high with OOP books like Design Patterns, Domain Driven Design, > Analysis Patterns, etc. I've recently ordered: > > - Concepts, Techniques, and Models of Computer Programming (mentioned > on this/compojure's list) > - Structure and Interpretation of Computer Programs (highly > recommended on Stackoverflow, lectures posted online) > > Any others? > > > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
Hi, Am 06.06.2009 um 17:47 schrieb Emeka: Then it is pretty obvious that I have erred again. C:\Program files\Vim\_vimrc That's where I found that file. This is probably the global _vimrc installed by Vim. You should first try a _vimrc in your home directory. Just create it if it doesn't exist. If you installed Vim as an administrator and now work as a "normal" user that might explain, why you are not allowed to edit the file. Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: VimClojure v2.1.1 is released
Then it is pretty obvious that I have erred again. C:\Program files\Vim\_vimrc That's where I found that file. Regards, Emeka --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
Hi, Am 06.06.2009 um 17:27 schrieb Emeka: C:\Users\rmicro\.viminfo That's what I found. Then it should be C:\Users\rmicro\_vimrc, I guess. Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: Interest in creating a NYC Clojure user group?
On Thu, Jun 4, 2009 at 12:09 PM, Eric Thorsen wrote: > what kind of interest there might be in creating a Clojure user group > in the NY metro area to meet up in Manhattan once a month to discuss > all things Clojure. I'd make an effort to attend monthly Clojure meetings in NYC. -- http://elhumidor.blogspot.com/ --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
C:\Users\rmicro\.viminfo That's what I found. Regards, Emeka --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
Hi, Am 06.06.2009 um 17:05 schrieb Emeka: Do you edit the correct _vimrc? I found only one file bearing that name. Are you referring to other files? Well there should be your personal _vimrc. It should probably be: C:\Documents and Settings\\_vimrc. Although this might be different for your Windows version. Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: What books have helped you wrap your brain around FP and Clojure?
As messy of a language it is, learning Ruby was the final step needed to show me the philosophy and merits of FP. -Patrick --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
I recommend "The Little Schemer" and if you want to go further, "The Seasoned Schemer". On Jun 6, 7:12 am, Robert Campbell wrote: > Going beyond the language-specific Programming Clojure book, what > other books have best helped you make the (sometimes mind-bending) > transition from OOP thinking to FP thinking? My bookshelf is piled > high with OOP books like Design Patterns, Domain Driven Design, > Analysis Patterns, etc. I've recently ordered: > > - Concepts, Techniques, and Models of Computer Programming (mentioned > on this/compojure's list) > - Structure and Interpretation of Computer Programs (highly > recommended on Stackoverflow, lectures posted online) > > Any others? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
Do you edit the correct _vimrc? I found only one file bearing that name. Are you referring to other files? Regards, Emeka > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
clojure.contrib.except enhanced
I've checked in changes to clojure.contrib.except to allow the functions it provides to produce exceptions that wrap other exceptions: they now support "causes". I believe it's now fully general and will be convenient to use for all of our exceptional needs. The attached text file contains a demo session at the repl showing some of its features. --Steve Clojure 1.1.0-alpha-SNAPSHOT user=> (use 'clojure.contrib.except) nil user=> (doc throwf) - clojure.contrib.except/throwf ([& args]) Throws an Exception or Error with an optional message formatted using clojure.core/format. All arguments are optional: class? cause? format? format-args* - class defaults to Exception, if present it must name a kind of Throwable - cause defaults to nil, if present it must be a Throwable - format is a format string for clojure.core/format - format-args are objects that correspond to format specifiers in format. nil user=> (throwf) ; no args java.lang.Exception (NO_SOURCE_FILE:0) user=> (throwf "hi there") ; a simple message java.lang.Exception: hi there (NO_SOURCE_FILE:0) user=> (throwf "hi there %s %s" 3 :look) ; a formatted message java.lang.Exception: hi there 3 :look (NO_SOURCE_FILE:0) user=> (throwf IllegalAccessException "hi there %s %s" 4 :oh) ; specified class java.lang.IllegalAccessException: hi there 4 :oh (NO_SOURCE_FILE:0) user=> (try (throwf "there") (catch Exception e (throwf e "hi"))) ; wrapped cause java.lang.Exception: hi (NO_SOURCE_FILE:0) user=> (.printStackTrace *e) java.lang.Exception: hi (NO_SOURCE_FILE:0) at clojure.lang.Compiler.eval(Compiler.java:4617) at clojure.core$eval__4610.invoke(core.clj:1730) at clojure.main$repl__6453$read_eval_print__6465.invoke(main.clj:178) at clojure.main$repl__6453.doInvoke(main.clj:195) at clojure.lang.RestFn.invoke(RestFn.java:426) at clojure.main$repl_opt__6493.invoke(main.clj:249) at clojure.main$main__6528.doInvoke(main.clj:336) at clojure.lang.RestFn.invoke(RestFn.java:402) at clojure.lang.Var.invoke(Var.java:342) at clojure.lang.AFn.applyToHelper(AFn.java:171) at clojure.lang.Var.applyTo(Var.java:463) at clojure.main.main(main.java:37) Caused by: java.lang.Exception: hi at user$eval__141.invoke(NO_SOURCE_FILE:9) at clojure.lang.Compiler.eval(Compiler.java:4601) ... 11 more Caused by: java.lang.Exception: there ... 13 more nil user=> (doc throw-arg) - clojure.contrib.except/throw-arg ([& args]) Throws an IllegalArgumentException. All arguments are optional: cause? format? format-args* - cause defaults to nil, if present it must be a Throwable - format is a format string for clojure.core/format - format-args are objects that correspond to format specifiers in format. nil user=> (throw-arg "that was a bad argument") java.lang.IllegalArgumentException: that was a bad argument (NO_SOURCE_FILE:0) user=> smime.p7s Description: S/MIME cryptographic signature
Re: performance concerns (again)
RSS is "resident set size"- as I recall from the days when I compiled my own kernels, it's based on a lazily-maintained not-guaranteed-to-be-accurate count of physical memory pages "in use" by the process. On linux, this number may overstate memory use by 50% or more for non-JVM processes. For JVM processes the "overcount" may be much greater. On Sat, Jun 6, 2009 at 8:46 AM, Jarkko Oranen wrote: > >> >> The problem was that it was not as fast as I expected it should be >> given that it was using no less than 100% of the CPU on my system. >> (two 3GHz Xeon CPUs [1 core]; 3GB RAM; a beefy workstation). That >> this was visible in the GUI shows how slow it appeared to me. Also, >> it was using 700MB RAM (VIRT in top). Sure - it was "swapped" (I'm >> familiar w/ some of the interpretations of these memory issues) except >> that my system has ZERO swap space. PMAP showed that 400MB of it was >> heap, too, not libraries or binaries or anything else that we can >> safely ignore. This was (apparently) real, allocated heap, private to >> the process's address space. > > I doubt the VIRT size matters at all. From what I know, it represents > the address space that is available to the process; there's no > guarantee that it's actually allocated or in use. Hence, it's not even > "swapped". On my system, I have several processes with hundreds of > megabytes in their "VSIZE" column shown in top. About 12GB in total; > yet, I have barely any swap space... only a single 64MB file is > allocated. (OS X allocates swapspace dynamically) > According to top, I have 0 pageouts since last boot, so the swap isn't > even being used. I have 3GB of RAM. > >> Additionally, as the simulation ran, the initial RSS of 60MB rose to >> 130MB then stopped. The VIRT remained constant. I had expected that >> - however I remained concerned. > > I'm not sure what kind of memory "RSS" is, but if it's shared, then > it's java's own overhead, and not the application itself. > the "private" memory areas are what you're interested in. Though of > course the overhead is meaningful if it's the only java app running, > but it's very difficult to tell what amount of the shared memory is > actually used only by your application. > > You can try tuning the java VM and decrease its heap size and other > things; see if it makes a difference. > > -- > Jarkko > > > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: What books have helped you wrap your brain around FP and Clojure?
Talk about bad timing - reading the "Silly question from Programming Clojure" it looks like a book thread already got started there. Here were some additional mentions: Laurent PETIT: OOSC: Object Oriented Software Construction, but this is OOP so I'm disinclined to include it for this specific list Paul Stadig: Concepts of Programming Languages by Sebesta, suggested as more general than SICP On Sat, Jun 6, 2009 at 1:12 PM, Robert Campbell wrote: > Going beyond the language-specific Programming Clojure book, what > other books have best helped you make the (sometimes mind-bending) > transition from OOP thinking to FP thinking? My bookshelf is piled > high with OOP books like Design Patterns, Domain Driven Design, > Analysis Patterns, etc. I've recently ordered: > > - Concepts, Techniques, and Models of Computer Programming (mentioned > on this/compojure's list) > - Structure and Interpretation of Computer Programs (highly > recommended on Stackoverflow, lectures posted online) > > Any others? > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: performance concerns (again)
> > The problem was that it was not as fast as I expected it should be > given that it was using no less than 100% of the CPU on my system. > (two 3GHz Xeon CPUs [1 core]; 3GB RAM; a beefy workstation). That > this was visible in the GUI shows how slow it appeared to me. Also, > it was using 700MB RAM (VIRT in top). Sure - it was "swapped" (I'm > familiar w/ some of the interpretations of these memory issues) except > that my system has ZERO swap space. PMAP showed that 400MB of it was > heap, too, not libraries or binaries or anything else that we can > safely ignore. This was (apparently) real, allocated heap, private to > the process's address space. I doubt the VIRT size matters at all. From what I know, it represents the address space that is available to the process; there's no guarantee that it's actually allocated or in use. Hence, it's not even "swapped". On my system, I have several processes with hundreds of megabytes in their "VSIZE" column shown in top. About 12GB in total; yet, I have barely any swap space... only a single 64MB file is allocated. (OS X allocates swapspace dynamically) According to top, I have 0 pageouts since last boot, so the swap isn't even being used. I have 3GB of RAM. > Additionally, as the simulation ran, the initial RSS of 60MB rose to > 130MB then stopped. The VIRT remained constant. I had expected that > - however I remained concerned. I'm not sure what kind of memory "RSS" is, but if it's shared, then it's java's own overhead, and not the application itself. the "private" memory areas are what you're interested in. Though of course the overhead is meaningful if it's the only java app running, but it's very difficult to tell what amount of the shared memory is actually used only by your application. You can try tuning the java VM and decrease its heap size and other things; see if it makes a difference. -- Jarkko --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: VimClojure v2.1.1 is released
Hi, Am 06.06.2009 um 13:24 schrieb Emeka: I would like to use vimclojure and I have even installed all the needed applications, however I am still not able to use it. I tried to edit _vimrc but was told that it is a readonly file(this happened when I used vim to edit it). When I used other editors, it does not prompt readonly, however the message(I added) is not saved to the file either. I was able to get the NGServer up. Please assist me in it figuring out why I can't edit _vimrc. I'm sorry. This seems more like a general Vim question. _vimrc probably means, that you use Windows. Things there are sometimes a bit awkward. However I never had problems editing my _vimrc with vim itself... Do you edit the correct _vimrc? Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: VimClojure v2.1.1 is released
Meikel, I would like to use vimclojure and I have even installed all the needed applications, however I am still not able to use it. I tried to edit _vimrc but was told that it is a readonly file(this happened when I used vim to edit it). When I used other editors, it does not prompt readonly, however the message(I added) is not saved to the file either. I was able to get the NGServer up. Please assist me in it figuring out why I can't edit _vimrc. Regards, Emeka --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
What books have helped you wrap your brain around FP and Clojure?
Going beyond the language-specific Programming Clojure book, what other books have best helped you make the (sometimes mind-bending) transition from OOP thinking to FP thinking? My bookshelf is piled high with OOP books like Design Patterns, Domain Driven Design, Analysis Patterns, etc. I've recently ordered: - Concepts, Techniques, and Models of Computer Programming (mentioned on this/compojure's list) - Structure and Interpretation of Computer Programs (highly recommended on Stackoverflow, lectures posted online) Any others? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
Re: Threadring Benchmark
On Jun 6, 11:44 am, Sean Devlin wrote: > This problem came up on the mailing list recently: > > http://groups.google.com/group/clojure/browse_thread/thread/5e0c078d0... > > You might want to compare your code to what was done here, but at a > glance the implementations are similar. > > You provide relative speed comparisons (Such and such is % > better...). Would you be able to share absolute times as well? I'm > just curious at this point. > > Sean For some reason the google spreadsheet link provided in my original mail requires users to login for viewing. The same numbers are available in this published google spreadsheet (hopefully without login). http://tinyurl.com/ofhync Regards, Parth > > On Jun 6, 12:41 am, Parth Malwankar wrote: > > > Hello, > > > In order to understand the agent model of Clojure > > better I wrote the alioth shootout threadring benchmark [1]. > > I ran some tests to compare it with the Java and Scala > > implementation [2, 3] which I picked from the published > > benchmarks. > > > The clojure code can be found here:http://gist.github.com/124688 > > > The benchmark from my two core 1.7GHz pentium system > > (ubuntu 9.04) w/ 1GB RAM can be found > > here:http://spreadsheets.google.com/ccc?key=rQLD6jgTTV5OqXwHdXtrTyg > > > In summary, scala implementation is 6.34x times slower than > > java, clojure is 7.8x. Avg CPU consumption is 93.3% for java and > > 179.2% and 131.34% for scala and clojure respectively. > > > I thought of sharing this in case others are interested. > > As this is my first program using clojure agents I would appreciate > > any > > comments on improving the Clojure implementation (or in case > > there are any bugs). > > > Thanks. > > Parth > > PS: For the Java implementation I happen to pick the "interesting > > alternate programs" (Java 6 -server #5) but it was already quite > > late in the cycle when I realized that. So the Java numbers are > > probably better than the other java implementations. > > > [1]http://shootout.alioth.debian.org/u32q/benchmark.php?test=threadring&;... > > [2]http://shootout.alioth.debian.org/u32q/benchmark.php?test=threadring&;... > > [3]http://shootout.alioth.debian.org/u32q/benchmark.php?test=threadring&;... --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
VimClojure v2.1.1 is released
Dear Vimming Clojurians, VimClojure v2.1.1 is out. This is only a bugfix release. No new features added. It mostly fixes bugs in the syntax highlighting. http://www.vim.org/scripts/script.php?script_id=2501 Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: defnk addition to c.c.def
Hi, Am 05.06.2009 um 00:22 schrieb Meikel Brandmeyer: sym-vals(apply hash-map (interleave syms values)) Ah! I always forget about zipmap... Clojure is just fun! :) Sincerely Meikel smime.p7s Description: S/MIME cryptographic signature
Re: Question for Clojure-Mode users.
On Jun 5, 2009, at 3:27 PM, Phil Hagelberg wrote: > > "Stephen C. Gilardi" writes: > >> (my-cool-database-operation the-database >> (arg-exp-1 with operands) >> literal-arg >> angstroms) >> >> There doesn't seem to be an easy way to distinguish these two types >> of >> initial operands (or the N-2 other types I've missed). "with-*" would >> probably seldom be wrong as an indicator of the second type. > > The only way I can think of is to connect to a running slime instance > and check to see if the var refers to a macro that takes a & body > argument. But this is a lot of moving parts for a slim benefit. It's > easier just to name these kinds of macros with-foo. =) I think Slime does this with CL. At least I seem to remember having code with macros that indented differently when the connection was established. — Daniel Lyons http://www.storytotell.org -- Tell It! --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~--~~~~--~~--~--~---
