Re: Lightweight lib/way to strip html from text
On Thu, Sep 6, 2012 at 11:41 AM, jamieorc jamie...@gmail.com wrote: Hey all, I'm looking for a lightweight way to strip html from a long String of text and leave just the text. I've come across JSoup, but at over 300kb for the lib, not quite lightweight. Suggestions? Cheers, Jamie When you say 'html' do you mean any html that a modern or even older browser would accept, or is a very restricted set of very clean html? -Rich -- 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: edn
On Thu, Sep 6, 2012 at 7:01 PM, Rich Hickey richhic...@gmail.com wrote: I've started to document a subset of Clojure's data format in an effort to get it more widely used as a data exchange format, e.g. as an alternative to JSON. Please have a look: https://github.com/richhickey/edn Rich Thanks for sharing! I've added a link on the wiki implementations page to an initial stab at an Amotoen grammar for edn ( https://github.com/richhickey/edn/wiki/Implementations ) I'm very interested in any test data that I can code against. While I'll be coming up with my own examples, since edn is so straightforward, it could help to have a 'canonical' collection of test data. -Rich -- 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: SaxParseException when using the Rome rss library
On Fri, Aug 17, 2012 at 5:26 PM, keedon keith.po...@gmail.com wrote: Hi, I've got a clojure problem and I'm hoping someone can help: I'm trying to parse an rss feed which contains illegal characters and I'm getting this error SAXParseException An invalid XML character (Unicode: 0x19) was found in the element content of the document. I've tried adding a function to remove control characters, but it doesn't seem to be working the filter function I've written is (defn remove-control [seq] (filter (fn [ch] (not (Character/isISOControl ch))) seq)) Thanks for any help Keith I'm not sure I can help, but I *am* interested in a sample of the RSS that you're trying to work with. Could you provide a sample? -Rich -- 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: Can you make Amotoen faster?
On Thu, Jul 19, 2012 at 7:09 AM, David Nolen dnolen.li...@gmail.com wrote: On Wed, Jul 18, 2012 at 10:12 PM, Richard Lyman richard.ly...@gmail.com wrote: All, There's not much code, and (sadly) not much documentation, but what's there needs some performance love. https://github.com/richard-lyman/amotoen Notes: - jvisualvm doesn't like me this week so help there might be enough (I can't see anything other than clojure classes - I'd love to only see my code) Have you tried profiling with YourKit? They allow free usage for open source projects. David YourKit was fantastic!! I especially loved the 'Hot Spots' functionality--it led me right to the problems. I've sped up Amotoen by several orders of magnitude on some of my tests... I'm into the mid-twenty milliseconds on my self-check. It's funny... I didn't believe it was that much faster - I had to step in and verify that it was still creating the structures it needed to instead of just bailing on an error or something. Turns out that ref and dosync are *really* expensive. I always knew there was a hit, but I never realized how much 'till now. Thanks! -Rich -- 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: Can you make Amotoen faster?
On Thu, Jul 19, 2012 at 7:09 AM, David Nolen dnolen.li...@gmail.com wrote: On Wed, Jul 18, 2012 at 10:12 PM, Richard Lyman richard.ly...@gmail.com wrote: All, There's not much code, and (sadly) not much documentation, but what's there needs some performance love. https://github.com/richard-lyman/amotoen Notes: - jvisualvm doesn't like me this week so help there might be enough (I can't see anything other than clojure classes - I'd love to only see my code) Have you tried profiling with YourKit? They allow free usage for open source projects. David I seem to remember looking into it at some point... I'll check it out again. Thanks! -Rich -- 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
Can you make Amotoen faster?
All, There's not much code, and (sadly) not much documentation, but what's there needs some performance love. https://github.com/richard-lyman/amotoen Notes: - jvisualvm doesn't like me this week so help there might be enough (I can't see anything other than clojure classes - I'd love to only see my code) - reifying IPosition to a faster implementation seems like it has potential - I've used *warn-on-reflection* and fixed the single spot it mentioned - I'm not convinced that the code used in 'either' is the best, and I'm a bit confused about why it's better than the two other commented-out forms - Switching IPosition grammar-grammar away from a character-based approach is an option, just one I'd like to avoid It's a leiningen project, with 'lein test' being what I run to check performance. The grammar parses itself 40 times and prints out how long that took. The self-check method might be a good place to start if walking through the code. Ignore the grammar samples, they haven't been updated in a while. Basically the two 'core' files, under src and test are all I'm working with right now. Is it already as 'fast' as it can be?? -Rich -- 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: Creating parsers in clojure
The little information you've provided leaves the field pretty open...
... but when I'm 'toying' around with ASTs I like Amotoen ('course I'm
probably biased. ;-)).
https://github.com/richard-lyman/amotoen
-Rich
On Fri, Feb 3, 2012 at 6:21 AM, Anna spiegl...@list.ru wrote:
I'm new to clojure and I'm looking for code examples for building
parsers in clojure on the fly using a grammar. I'm supposed to write a
little SQL parser to experience with sql parse tree normalization's.
Any recommendations?
--
--
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: Looking for parser generator library
Have you looked at amotoen? https://github.com/richard-lyman/amotoen I'm not sure what your needs are... -Rich On Sat, Jan 28, 2012 at 8:19 AM, Roman Perepelitsa roman.perepeli...@gmail.com wrote: I'm looking for a parser generator library. I stumbled upon fnparse, but unfortunately it doesn't work with clojure 1.3. Roman Perepelitsa. -- 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 -- 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: Building Clojure applications w/ Maven
Can you provide the pom you're using? By 'build' do you mean AOT? -Rich On Tue, Dec 6, 2011 at 3:35 PM, Riccardo riccardo.novie...@gmail.com wrote: Hello, I am doing my dissertation project with Clojure and I am using Maven to build. It works on REPL and it build successfully, but the JAR file doesn't work, it says: Java Exception all the time. Any suggestion? -- 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 -- 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: Handling of unsigned bytes
I have to deal with them when processing AMF packets, and I use the Netty library - it's amazing, you should look into it. http://www.jboss.org/netty -Rich On Fri, Feb 11, 2011 at 10:22 AM, timc timgcl...@gmail.com wrote: How on earth is one supposed to do communication programming (not to mention handling binary files etc) without an unsigned byte type? I see that this issue has been talked about vaguely - is there a solution? Thanks -- 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: getting started with clojure
On Tue, Oct 19, 2010 at 5:55 PM, ishkabible j...@ehrlichks.net wrote: lastly i have been messing around with new languages just to try them out. Fantastic fun! I wish you the best of luck. in trying out coljure (only functional language i have tried yet) but i can compile anything longer than one line. Are you using the 'repl'? That process can feel very different from some styles of Clojure development. im using Coljure Box but im very confused as to how i am supposed to write code that dose more than one thing. basically how do i save files, compile them, then run them? Clojure Box likely has a specific process that it advocates since it uses ... clojure-mode and Slime, plus all the power of Emacs under the hood. While this development process works for some (most?) it doesn't work so well for others. I've documented one way of developing using Ant[1] and a certain folder structure... which was OK for a while but I've since switched to leiningen[2]. In the end all you _really_ need is to find a process that fits how you're used to working. You can refer to the 'Getting Started' page on the Assembla Wiki[3]. Again, good luck and have fun! -Rich [1] http://www.lithinos.com/Compiling-Clojure-Applications-and-Libraries-Round-2.html [2] http://github.com/technomancy/leiningen [3] http://www.assembla.com/wiki/show/clojure/Getting_Started -- 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: Flex as a Clojure Frontend
On Sun, Aug 15, 2010 at 9:13 PM, nchubrich nchubr...@gmail.com 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 applet that runs on the client side and does computations while Flex handles the interface; finally, I'm also (in the long-term) interested in building standalone apps that use Flex/AIR for the interface and Clojure/Java for the backend. It all seems rather complicated, but I've found Flex to be the best way of programming interfaces (so far). Concerning BlazeDS and AMF: what is the advantage of that over just using straight HTTP with say JSON? I know RTMP has push capability; any other reasons? -Nick. Push has never been much of a selling point of RTMP for me, you could use HTTP long-polling for a similar result. Bandwidth is probably the largest selling point, with readability the biggest negative in RTMP/AMF. To understand what I mean about bandwidth, you could checkout: http://www.jamesward.com/census/ -Rich -- 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
[ANN] clj-peg is dead
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 -- 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: Flex as a Clojure Frontend
On Sat, Aug 14, 2010 at 1:40 PM, nchubrich nchubr...@gmail.com wrote: I'm wondering if anyone has any experience developing Clojure applications with a Flex interface, and if so, what is the best way of going about it. I have quite a bit of experience. I've been writing an internal implementation of the non-media parts of RTMP, so that your backend can be anything that runs on the JVM (Java, Clojure, Scala, Groovy, JRuby, etc.) and your frontend can be pure ActionScript. The 'best way' probably depends on how you'll be deploying your application. Are you going with some J2EE container, are you packaging everything into a standalone app? (Or maybe something between the two...) I also wonder if anyone has used Las3rI'm a little reluctant to use it because the Flash Builder programming environment is so effective. Thanks, Nick. I don't have experience with Las3r - but it says it's a port of Clojure (parts of) to run on the AVM2. That's pretty different than the standard method of communication between a Flex frontend and a JVM backend. If I were you I'd look at getting Jetty or Tomcat (JBoss if you're very brave or previously-enterprise-skilled) to work with BlazeDS - then you can write your Clojure code compiled to JARs and expose the methods as AMF messagebrokers to a RemoteObject running from Flex. -Rich -- 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: ClojureDocs.org
On Sun, Jul 11, 2010 at 8:14 AM, Phil Hagelberg p...@hagelb.org wrote: On Sat, Jul 10, 2010 at 11:23 PM, zkim zachary@gmail.com wrote: but what do you think about using Justin's codebase, or an Aleph-based server to host the thing instead of Ruby/Rails? (see the link above for more details) I'm inclined to move forward with the Ruby / Rails for now. The reason I went with rails is that (in my experience) none of the clojure web libraries are mature enough to do something like clojuredocs as quickly and easily as I personally would be able to do in rails. Could you provide details about what it was specifically that you found was lacking? -Phil It sounded to me like he was only saying that he's more familiar with Ruby/Rails than he is with Clojure. It seemed like it was a question of 'time to finish and tweak' that's shortest for him if he wrote it in Ruby/Rails. Maybe this is a good opportunity to be able to compare two implementations side-by-side. His excellent solution with one written in Clojure that produces the same-ish website. -Rich -- 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: DSL with a grammar
On Thu, Jul 8, 2010 at 1:34 PM, Nicolas Oury nicolas.o...@gmail.com wrote: Sorry, that's why I had quote around my parse. I meant, use clojure reader to take a sequence in a macro and then parse it for my own DSL. So I shouldn't need any help from the reader (even if having some metas with line and character attached to thing would help) I do not want to go the parser generator way because I want the DSL to be tightly integrated with Clojure. The clj-peg library allows for a grammar that is all Clojure code. It's successor will be even more integrated. Both _could_ be considered parser combinators... so you might not want to rule out all parser combinators as not being tightly integrated. Just FYI. I hope you find what you're looking for. :-) -Rich Thanks for your answer, Nicolas. -- 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
Recommendations on prepping a library for 1.2 release?
I guess I'm mostly wondering where to get the best (continually update-able best) version of 1.2 core (and contrib?) before it's released. I'd rather not go Lein or Maven2 - just a vanilla checkout and Ant if that's still a supported build option. Everything's on github - right? The simplest commands to grab the core (and contrib?) from github as well as the commands to keep updating every week or so until release would be fantastic. All of this is assuming, hopefully incorrectly, that there's no automated nightly JAR that's being produced and made available somewhere. Thanks! -Rich -- 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: Recommendations on prepping a library for 1.2 release?
On Wed, Jun 16, 2010 at 8:36 PM, David Nolen dnolen.li...@gmail.com wrote: On Wed, Jun 16, 2010 at 10:17 PM, Richard Lyman richard.ly...@gmail.com wrote: Everything's on github - right? The simplest commands to grab the core (and contrib?) from github as well as the commands to keep updating every week or so until release would be fantastic. git clone url, to get it git pull, to update it git fetch, to grab the other branches git checkout branch, to switch to a branch ant, to build the branch you are on. Do I need any branches? What are the branches? I thought that when a branch was stable it would be merged back into master (if I'm using the right terms). All of this is assuming, hopefully incorrectly, that there's no automated nightly JAR that's being produced and made available somewhere. The clojure master branch is being built continuously here, http://build.clojure.org/ When you say master branch, do you mean just core, or does that include contrib? Speaking of which: Should I still care about contrib? I remember hearing that several items had been merged into core... David Thanks for the quick and succinct response. -Rich -- 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: Macros, any reading suggestion?
On Thu, Jun 3, 2010 at 1:24 PM, Miki miki.teb...@gmail.com wrote: Hello alux, I still have some technical questions, but the main issue seems to be that I need to dive more deeply into the whole area of macro programming. You might find http://www.paulgraham.com/onlisp.html interesting. (The PDF version of the book is free to download there) It's about common lisp, but taught me a lot about macros. HTH, -- Miki I'd second the onlisp book. In addition to that book, code is the best thing to understanding the abilities that macros bring. -Rich -- 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: Calling for advice on a parser's location data
On Sun, May 2, 2010 at 6:29 PM, joshua-choi rbysam...@gmail.com wrote:
I'm making a parsing library that can keep track of its location in a
stream of tokens, and the tokens can be of any type—character, map,
and so forth. I need advice on this question:
Can you think of an instance where the location would not be a line
number and column number, such as {:line 3, :column 25}?
Binary input wouldn't be required to have a concept of lines or columns.
I'm deciding if I should bother with the trouble of making the
location data structure independent and pluggable with my parser, or
if I should make it always a line-column pair, which would make the
API much simpler.
The clj-peg library requires pre-wrapping any input to be parsed in an
interface that provides quite a bit of flexibility like this.
I would agree that it makes it more complicated though.
-Rich
--
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: jogl classpath not found
I'm not sure if this will help, but here's some tidbits from the day I spent
toying around with JOGL... I think it was version 1.1.1.
This is part of the Ant file that I used:
...
java classname=clojure.lang.Compile fork=true
failonerror=true
classpath
pathelement location=${src_dir} /
pathelement location=${src_dir}/classes /
pathelement location=${clojure_jar} /
pathelement location=${contrib_jar} /
pathelement location=${jogl_jar} /
pathelement location=${gluegen_jar} /
/classpath
sysproperty key=clojure.compile.path
value=${src_dir}/classes /
arg line=${files_to_compile} /
/java
...
I can reproduce a similar error by commenting out the line for the jogl_jar.
Exception in thread main java.lang.ClassNotFoundException:
javax.media.opengl.GLCanvas (jogltest.clj:1)
Here's the Clojure file I used (be warned - it's very very bad Clojure
code):
(ns jogltest
(:import
(java.io BufferedReader InputStreamReader)
(java.awt Frame)
(java.awt.event WindowListener WindowAdapter KeyListener KeyEvent)
(javax.media.opengl GLCanvas GLEventListener GL GLAutoDrawable)
(javax.media.opengl.glu GLU)
(com.sun.opengl.util Animator))
(:gen-class))
(defn exit [a f]
(.stop a)
(.dispose f))
(defn -main [ args]
(println works)
(let [
rotateT 0
glu (new GLU)
canvas (new GLCanvas)
frame (new Frame Jogl 3D Shape/Rotation)
animator (new Animator canvas)]
(.addGLEventListener
canvas
(proxy [GLEventListener] []
(display
[#^GLAutoDrawable drawable]
(doto (.getGL drawable)
(.glClear (. GL GL_COLOR_BUFFER_BIT))
(.glClear (. GL GL_DEPTH_BUFFER_BIT))
(.glLoadIdentity)
(.glTranslatef 0 0 -5)
(.glRotatef rotateT 1 0 0)
(.glRotatef rotateT 0 1 0)
(.glRotatef rotateT 0 0 1)
(.glRotatef rotateT 0 1 0)
(.glBegin (. GL GL_TRIANGLES))
; Front
(.glColor3f 0 1 1) (.glVertex3f 0 1 0) (.glColor3f 0 0 1) (.glVertex3f
-1 -1 1) (.glColor3f 0 0 0) (.glVertex3f 1 -1 1)
; Right Side Facing Front
(.glColor3f 0 1 1) (.glVertex3f 0 1 0) (.glColor3f 0 0 1) (.glVertex3f 1
-1 1) (.glColor3f 0 0 0) (.glVertex3f 0 -1 -1)
; Left Side Facing Front
(.glColor3f 0 1 1) (.glVertex3f 0 1 0) (.glColor3f 0 0 1) (.glVertex3f 0
-1 -1) (.glColor3f 0 0 0) (.glVertex3f -1 -1 1)
;Bottom
(.glColor3f 0 0 0) (.glVertex3f -1 -1 1) (.glColor3f 0.1 0.1 0.1)
(.glVertex3f 1 -1 1) (.glColor3f 0.2 0.2 0.2) (.glVertex3f 0 -1 -1)
(.glEnd))
(def rotateT (+ 0.2 rotateT)))
(displayChanged [drawable m d])
(init
[#^GLAutoDrawable drawable]
(doto (.getGL drawable)
(.glShadeModel (. GL GL_SMOOTH))
(.glClearColor 0 0 0 0)
(.glClearDepth 1)
(.glEnable (. GL GL_DEPTH_TEST))
(.glDepthFunc (. GL GL_LEQUAL))
(.glHint (. GL GL_PERSPECTIVE_CORRECTION_HINT)
(. GL GL_NICEST)))
(.addKeyListener
drawable
(proxy [KeyListener] []
(keyPressed
[e]
(when (= (.getKeyCode e) (. KeyEvent VK_ESCAPE))
(exit animator frame))
(reshape
[#^GLAutoDrawable drawable x y w h]
(when ( h 0)
(let [gl (.getGL drawable)]
(.glMatrixMode gl (. GL GL_PROJECTION))
(.glLoadIdentity gl)
(.gluPerspective glu 50 (/ w h) 1 1000)
(.glMatrixMode gl (. GL GL_MODELVIEW))
(.glLoadIdentity gl))
(doto frame
(.add canvas)
(.setSize 640 480)
(.setUndecorated true)
(.setExtendedState (. Frame MAXIMIZED_BOTH))
(.addWindowListener
(proxy [WindowAdapter] []
(windowClosing [e] (exit animator frame
(.setVisible true))
(.start animator)
(.requestFocus canvas)
;(Thread/sleep (* 1 1000))
)
)
Good luck!!
-Rich
P.s. - I switched to using JME... it had more of the features I was looking
for.
--
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: map not working in loop
On Fri, Mar 5, 2010 at 7:05 AM, Glen Rubin rubing...@gmail.com wrote: The following code does not work, when using (range 1 5) as coll input: (defn pyt [coll] (loop [b (rest (coll))] (map #(* % %) b))) The real code was more complicated, but I refined it to its simplest form while still producing the error. (map f coll) looks correct to me?? :( I'm not sure what effect you're looking for, but... Don't forget, map is lazy and the function you've supplied as the second parameter doesn't modify b. Depending on what outcome you're looking for, you might want to wrap the call to map in a call to doall, or modify b and your second parameter so that b is changed. -Rich -- 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: map not working in loop
On Fri, Mar 5, 2010 at 7:31 AM, Glen Rubin rubing...@gmail.com wrote: The problem was that coll was being called as a fcn as others pointed out. You say the function being supplied as my second parameter does not modify my third parameter? (defn pyt [coll] (loop [b (rest coll)] (map #(* % %) b))) I am taking the third parameter and squaring it. Isn't that a modification? thx everybody for the help! On Mar 5, 7:15 am, Richard Lyman richard.ly...@gmail.com wrote: On Fri, Mar 5, 2010 at 7:05 AM, Glen Rubin rubing...@gmail.com wrote: The following code does not work, when using (range 1 5) as coll input: (defn pyt [coll] (loop [b (rest (coll))] (map #(* % %) b))) The real code was more complicated, but I refined it to its simplest form while still producing the error. (map f coll) looks correct to me?? :( I'm not sure what effect you're looking for, but... Don't forget, map is lazy and the function you've supplied as the second parameter doesn't modify b. Depending on what outcome you're looking for, you might want to wrap the call to map in a call to doall, or modify b and your second parameter so that b is changed. -Rich Sorry for the miscommunication. Clojure 1.0.0- user= (def b '(1 2 3)) #'user/b user= b (1 2 3) user= (map #(* % %) b) (1 4 9) user= b (1 2 3) user= I didn't know if the real code used b inside the let after the call to map and had expected it to be different. -Rich -- 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
[ANN] clj-peg 0.7 (switch to EPL)
All, I've switched the clj-peg library to be under the EPL. This project adds support in Clojure for Parsing Expression Grammarshttp://en.wikipedia.org/wiki/Parsing_expression_grammar. In addition to the basic operators I've added tracking AST branches, referring to tracked branches, gathering simple repetitions, and specifying a repetition count. While the current version allows for expanding the types of supported input to anything you'd like, future releases will include an input wrapper to process binary structures. A relevant post: http://www.lithinos.com/Releasing-clj-peg-under-the-epl.html The project page: http://www.lithinos.com/clj-peg/index.html The beginning user manual: http://www.lithinos.com/clj-peg/0.7.0/clj-peg-manual.pdf -Rich -- 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: [ANN] clj-peg 0.7 (switch to EPL)
On Sat, Feb 13, 2010 at 5:33 PM, Brendan Ribera brendan.rib...@gmail.comwrote: Cool! I'll probably make use of this soon. Any plans to get it set up on github for contributions? No plans right now. I'm open to the idea, but I'd like to see what it's like to work with contributions in the current setup. I'd like to get it to v1.0 before I open it up more. Let me know how using it goes I'm excited to see if it can help others. -Rich -- 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
About releasing clj-peg under the EPL 1.0
I have a few questions I'm hoping to get some feedback on. = Releasing source code = If I understand the EPL 1.0 correctly, under section 3(b) part IV, I'm forced to release my source code - right? I _cannot_ just release an AOT JAR under the EPL 1.0 and keep the source code under a different licence - right? Or does that only apply to everyone _other_ that the initial Contributor? = Other's commercial profit = Under 2(a) and 2(b) I've pretty much given each Recipient full patent and copyright permissions. There's nothing available to me if I want to profit from it in the future. I have to change the license on some future release, and even then they still would have the full permissions I had granted in some past release - right? Under 2(c), even though I've given the permissions I can, the Recipient still might not be able to distribute my Contribution if my Contribution infringes some third party patent for which the Recipient is required to secure any rights that might be necessary. It seems odd that there could still be some loophole... some way that I could benefit from the third-party patent licensing - right? This has been a fairly painful process for me, thanks for any helpful feedback. -Rich -- 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: clj-peg v0.6 released
On Fri, Jan 8, 2010 at 11:07 AM, Paul Mooser taron...@gmail.com wrote: At some point, hopefully someone will write an open-source parsing library with liberal licensing terms for clojure. Would you mind elaborating on your definitions for the terms open-source and liberal licensing? I'm not sure I like the current licensing scheme for clj-peg and I've spent quite a bit of time thinking about how I should approach this project's license in particular. I have two very different perspectives about this issue. On the one hand, if I were a user and not the developer I doubt I'd use this library because I really don't like paying for software. I also would be a bit wary of the 'except for commercial use' part in the license. On the other hand, I've put a significant amount of time and energy into this as a product. Money isn't what it used to be and I'm reluctant to lose the potential extra income that a dual license might provide. There is value in augmenting whatever reputation I have by providing the code for free, but reputation alone doesn't pay the bills. So... that's why I'm wondering if you would mind helping me understand your point-of-view. -Rich -- 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: [ANN] clj-peg v0.6 released
Currently I'm only providing the code in AOT form. If the JAR is on your classpath everything in the manual works just fine. Did that answer your question? -Rich 2010/1/7 Michał Kwiatkowski constant.b...@gmail.com On Mon, Jan 4, 2010 at 11:27 PM, Richard Lyman richard.ly...@gmail.com wrote: This project adds support in Clojure for Parsing Expression Grammars. You'll be able to write pseudo-ebnfs directly in your Clojure code. Sounds nice, but where's the source code? Cheers, mk -- 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: clj-peg v0.6 released
I'm not familiar with Scala's parser combinators, in addition, I'm fuzzy on the technical definition of a parser combinator. I think I'd call it a parser combinator, since the grammar is embedded in the code using native Clojure data structures, evaluation can be delayed, and grammar definitions can be modified at runtime before the parser is generated. What key parts to the definition of parser combinator would need to be met in order to be comparable to Scala's parser combinators? -Rich On Tue, Jan 5, 2010 at 6:00 AM, Seth seth.schroe...@gmail.com wrote: I forgot to appreciate having something like clg-peg to play with... no clue where my manners went. Is this comparable at all to Scala's parser combinators? -- 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: [ANN] clj-peg v0.6 released
For now I'd rather be compensated if someone were planning on using clj-peg commercially. I'm not sure how much I'd charge for a commercial-friendly license, and I don't have an automated process for handling billing and production of a differently licensed product, so I'm reluctant to move that direction for now. If you were interested in licensing clj-peg under different terms I'm willing to discuss it outside of this mailing list. Did that answer your question? -Rich On Tue, Jan 5, 2010 at 8:17 AM, Stefan Tilkov stefan.til...@innoq.comwrote: Richard, can you elaborate on the license? The license page says Permission is granted to use and redistribute this software except for commercial use […] Stefan -- Stefan Tilkov, http://www.innoq.com/blog/st/ -- 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
[ANN] clj-peg v0.6 released
All, This project adds support in Clojure for Parsing Expression Grammars. You'll be able to write pseudo-ebnfs directly in your Clojure code. Currently, this... Expr - [Sum $] Sum - [Product (* [SumOp Product])] Product - [Value (* [ProductOp Value])] Value - (| Num Sum) Num - JSONNumber SumOp - #^[+-] ProductOp - #^[*/] ... turns into a parser with only a few extra lines of code (three more lines would be comfortable). The grammar reads quite easily as well. The production for the non-terminal Sum could be read, A Sum is a Product followed by zero-or-more of the SumOp Product pair. Project page: http://www.lithinos.com/clj-peg/index.html Manual: http://www.lithinos.com/clj-peg/0.6.10/clj-peg-manual.pdf -Rich -- 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: clj-peg v0.6 released
Oh, sorry! I was thinking about releasing this version last week - but with the new year likely taking precedence I thought I'd wait. Maybe next time I'll send you a version a few days before I announce it. ;-) -Rich On Mon, Jan 4, 2010 at 3:32 PM, Anniepoo annie6...@yahoo.com wrote: Sweet! Wish I'd had this a few days ago, I just spent the last few days writing parsers. -- 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: clj-peg v0.6 released
Yeah, the management software for my site is in flux. Getting RSS done is on the todo list, but not very high. There really aren't pre-releases - when I have a version to release I announce it here as soon as it's available. I hadn't thought that there might actually be people interested in pre-releases... thanks for the suggestion. Maybe adding RSS feeds back in should take a higher priority. -Rich On Mon, Jan 4, 2010 at 8:25 PM, Seth seth.schroe...@gmail.com wrote: An RSS feed might help early adopters test prereleases, but it's been explicitly disabled? On Jan 4, 5:43 pm, Richard Lyman richard.ly...@gmail.com wrote: Oh, sorry! I was thinking about releasing this version last week - but with the new year likely taking precedence I thought I'd wait. Maybe next time I'll send you a version a few days before I announce it. ;-) -Rich On Mon, Jan 4, 2010 at 3:32 PM, Anniepoo annie6...@yahoo.com wrote: Sweet! Wish I'd had this a few days ago, I just spent the last few days writing parsers. -- 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
[ANN] clj-peg 0.4
Version 0.4 brings modifications to the syntax for declaring grammars as well as suggestions about avoiding the exponential runtimes that can occur. Here is a post walking through these changeshttp://www.lithinos.com/New-syntax-and-linear-runtime-options-in-clj-peg.html . -Rich --~--~-~--~~~---~--~~ 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: Questions / guidelines for adopting Clojure
On Tue, Jul 7, 2009 at 6:08 AM, Roman Roelofsen roman.roelof...@googlemail.com wrote: Hi all! Hello! Welcome to the group. snip * Syntax * I never used a LISP-like language before and I can't read the clojure code as fluent as code from different languages. Take for example this scala snippet: (0 until 100) map (_ * 2) filter (_ % 3 == 0) I can easily read this line from left to right (just like english) and instantly see whats going on. By contrast, I have to read the clojure version a couple of times to understand it: (filter #(= 0 (rem % 3)) (map #(* 2 %) (range 100))) Is this just a matter of pratice? Do you find it easy to read the clojure version? I find it easier to read Clojure code when I don't have everything on one line. In other languages I've been able to put everything on one line and survive, but in CL and Clojure it has always read better on multiple lines. For instance, the code you provided could be written like: (filter #(= 0 (rem % 3)) (map #(* 2 %) (range 100))) Then the parts of the code and their relations can be easier to find. Now I can easily tell that whatever comes out of the call to map is being filtered - without caring about what is 'under' the call to map. This ability to ignore the parts that are 'inside' some deeper code has helped me in reading Clojure code. large snip Sorry for the long posting and thanks a lot for reading it ;-) I don't mind the long posting. You had everything sectioned out nicely. Cheers, Roman Good luck with learning Clojure, I hope you continue to enjoy it.. -Rich --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
[ANN] clj-peg
I'm a little apprehensive about sharing this project with others, but I thought I might as well try. I'm very interested in any feedback, but for now the license is a bit-non-open. There are modifications that I'm still wanting to make to the core before I fully open the license. Here's a bit of info: - clj-peg is intended to eventually support Parser Expression Grammarshttp://en.wikipedia.org/wiki/Parsing_expression_grammar(it does a good job as is). - It's released as an AOT compiled pair of JARs (I'd love feedback on this approach to distributing a Clojure library). - It is in _no_ way optimized. (I'm pretty sure current runtimes are exponential in the worst case.) - The project page is at: http://www.lithinos.com/clj-peg/ - An intro post is at: http://www.lithinos.com/Intro-to-clj-peg.html A sample of the syntax that I'm currently using (though I'm really not happy with it yet): Expr - (=ast expr-ast (=s Sum (=e))) Sum - (=ast sum-ast (=s Product (=* (=s SumOp Product Product - (=ast product-ast (=s Value (=* (=s ProductOp Value Value - (=ast value-ast (=o Num (=s LParen Expr RParen))) Num - (=ast num-ast (=+ NumChar)) SumOp - #^[+-] ProductOp - #^[*/] LParen- ( RParen- ) NumChar - #^[0-9] What does everyone think? -Rich --~--~-~--~~~---~--~~ 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: How to call function (or Java method) using string name?
There's a section on the wiki with almost the exact same title: http://en.wikibooks.org/wiki/Clojure_Programming/Examples#Invoking_Java_method_through_method_name_as_a_String If I'm understanding the question correctly that should do what you're wanting to do. -Rich On Sun, Apr 26, 2009 at 11:50 AM, timc timgcl...@gmail.com wrote: Thanks Stuart. I have figured out another way, which is much more general (and uses the lowest level of how Clojure works). (defn evalStr [s] (clojure.lang.Compiler/eval (clojure.lang.RT/ readString s))) will (attempt to) execute any valid form (i.e. the string that is the source of the form). Thus: (evalStr (+ 1 2)) -- 3 --~--~-~--~~~---~--~~ 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 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 -~--~~~~--~~--~--~---
[ANN] Compiling Clojure applications using Ant
Searching for 'clojure ant compile' returns pages that talk about the process of compiling the Clojure and Contrib JARs - but I couldn't find pointers on setting up a project to use Ant, so... http://www.lithinos.com/Compiling-Clojure-applications-using-Ant.html What do you guys think? -Rich --~--~-~--~~~---~--~~ 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 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: [ANN] Compiling Clojure applications using Ant
Cool. Thanks for the pointer to clojure.lang.Compile and the reminder about
failonerror - I'll update it as soon as I can.
I'll also look into coming up with a clearer explanation of the app
variable.
Thanks!
-Rich
On Sat, Apr 11, 2009 at 3:55 PM, John D. Hume duelin.mark...@gmail.comwrote:
On Sat, Apr 11, 2009 at 3:49 PM, Richard Lyman richard.ly...@gmail.com
wrote:
http://www.lithinos.com/Compiling-Clojure-applications-using-Ant.html
What do you guys think?
-Rich
It's a bit simpler to use clojure.lang.Compile as a main class.
Here's the relevant bit from one of my build.xmls:
target name=compile depends=clean,init
java classname=clojure.lang.Compile
classpathref=project.classpath
fork=true
failonerror=true
classpath path=${src.dir} /
sysproperty key=clojure.compile.path value=${classes.dir} /
arg value=clj-record.boot /
/java
/target
http://github.com/duelinmarkers/clj-record/blob/c8235e7d854c0049a785d7773665cb6c62efb024/build.xml#L30
I strongly recommend failonerror=true so that your build will abort
if compilation fails. (If you stick with the clojure.main -e
(compile... approach I think you'll find clojure.main doesn't exit
with an error code, so it won't work. There's another recent thread
about that and I'm planning to open an issue and submit a patch for it
when I have a chance. clojure.lang.Compile does exit with an error
when compilation fails, so the above will fail a build appropriately.)
Also, I'd recommend being clearer in describing the app variable. It
will need to be a Clojure namespace that when loaded will (one way or
another) load in all of your Clojure code. If someone is building a
library, it's relatively likely there is no such namespace.
-hume.
--
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
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: 6 + 7 = 13
It's probably already been changed. They've had a really fast response time here for things like that. -Richard On Tue, Feb 24, 2009 at 10:08 AM, Marko marko.van.doo...@gmail.com wrote: Strange, I'm sure I saw 7 this morning and not 36. Either I was delusional or somebody changed it already. --~--~-~--~~~---~--~~ 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 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: Invoking Java method through method name as a String
This is _so_ awesome!! Thanks a ton for your patient help Tim, and others. In the end I also had to switch the use of into-array to to-array, since into-array expects all the elements to be the same type, and my args were of varying types. Using to-array worked since it cast each element to the Object type before passing it along. Again, thanks a ton. I'd been working for quite a while on trying to get this knot tied off. I'm going to make a page on the Wiki about this, hopefully no one else will need to go through this again. :-) -Rich --~--~-~--~~~---~--~~ 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 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 -~--~~~~--~~--~--~---
[Solved] Re: Invoking Java method through method name as a String
I've added a section on the Wiki under the examples: http://en.wikibooks.org/wiki/Clojure_Programming/Examples#Invoking_Java_method_through_method_name_as_a_String Again, thanks! -Rich --~--~-~--~~~---~--~~ 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 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 -~--~~~~--~~--~--~---
Invoking Java method through method name as a String
I have an instance of the Java class in a variable. I have the method arguments in a vector. I have the method name as a String. I've tried so many different ways to invoke that method on that class and pass those parameters. I've tried macros, reflection, and read/eval. None of the ways I've tried feel right, and none of them have worked so far. Rather than dump all the failed code, here's some pseudo-code that I wish worked... (prn Result: (apply (memfn-from-string nameOfMethod) class-instance [arg1 arg2 arg3])) Any pointers? What am I not seeing? Am I wanting too much? Thanks! -Richard --~--~-~--~~~---~--~~ 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 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: Invoking Java method through method name as a String
Thanks for the quick response! :-) This works fine when the method name is not in a var, but if you try: user= (defmacro my-invoke [method-str instance args] `(. ~instance ~(symbol method-str) ~...@args)) nil user= (my-invoke toString 5) 5 user= (def command toString) #'user/command user= (my-invoke command 5) java.lang.IllegalArgumentException: No matching field found: command for class java.lang.Integer (NO_SOURCE_FILE:0) user= The macro is processed before the expression is eval'd - right? That's why the call to symbol inside the macro returns 'command' as the method you're invoking - right? I'm not sure I'm understanding everything here, but it seems like I'm needing a way to delay the evaluation of that part of the macro until the value bound to the command var can be inserted... -Richard On Sat, Feb 21, 2009 at 6:15 AM, Timothy Pratley timothyprat...@gmail.comwrote: Hi Richard, As you probably know, Clojure java interop requires the method to be a symbol: user= (. 5 toString) 5 So if you want to invoke a method from a string, you can convert the string to symbol first: user= (symbol toString) toString Great! but (. 5 (symbol toString)) wont work because (symbol toString) is not evaluated. Instead it gets transformed into 5.symbol(toString) which is not what we want :( :( However with a little trickery we can still do it (please excuse ugliness - my macro-fu is weak): (defmacro my-invoke [method-str instance args] `(. ~instance ~(symbol method-str) ~...@args)) user= (my-invoke toString 5) 5 Regards, Tim. --~--~-~--~~~---~--~~ 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 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 Questions
From the http://clojure.org/getting_started page: Clojure is delivered in a zip file containing a single .jar, clojure.jar, a readme, the CPL license and the source code in a src subdirectory. It uses the ASM 3.0 bytecode library http://asm.objectweb.org/, and the current alpha distribution includes it. Javahttp://java.sun.com/javase/downloads/index.jsp1.5 or greater is required. Good luck! :-) -Richard On Sat, Feb 21, 2009 at 11:57 AM, Christian Vest Hansen karmazi...@gmail.com wrote: I *think* that Clojure does not require anything from Java 6, and thus can work on any compliant Java 5 or greater. On Sat, Feb 21, 2009 at 3:13 PM, Sean francoisdev...@gmail.com wrote: Hi everyone, I'm working on cleaning up the wikibook some, and I've got a few questions. If anyone could answer, that would be a great help. What is the minimum required JVM version for clojure? What versions of Java have been tested? What versions of Java are supported? Thanks! -- Venlig hilsen / Kind regards, Christian Vest Hansen. --~--~-~--~~~---~--~~ 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 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: Invoking Java method through method name as a String
Cool... that looks like it got me past the 'method-as-a-string' problem, but now I'm getting errors with not finding a matching method on the class by that name. I'm guessing that this means there was a problem matching the type signature of the method. The arguments to the method are stored in a 'clojure.lang.PersistentVector', and if I duplicate the method I'm trying to access but set the only parameter to be typed as 'clojure.lang.PersistentVector', then it works. The new method with the new type signature works. Which to me means that we're passing all the arguments to the method still inside their original vector - right? I guess I'm still stuck on how to expand the vector of arguments in place... and I'm really not very sure what you're doing with the '' in the parameters for the str-invoke. Is that a way of slurping all the remaining parameters into a vector? If so, then aren't I needing to do the opposite? I tried removing the , and into-array - that didn't work. I tried changing the method into a macro so I could splice in the vector of args - that didn't work. This is getting frustrating. Everything else has been so relatively easy to do until now. I really appreciate your help in walking me through my lack of understanding. If I'm following you correctly I think we're here: user= (defn str-invoke [instance method-str args] (clojure.lang.Reflector/invokeInstanceMethod instance method-str (into-array args))) #'user/str-invoke user= (def i sampleString) #'user/i user= (def m substring) #'user/m user= (def args [2,3]) #'user/args user= (str-invoke i m args) java.lang.IllegalArgumentException: Unexpected param type (NO_SOURCE_FILE:0) user= (str-invoke i m 2 3) m user= -Rich On Sat, Feb 21, 2009 at 4:19 PM, Timothy Pratley timothyprat...@gmail.comwrote: How embarrassing! This works much better: (defn str-invoke [method-str instance args] (clojure.lang.Reflector/invokeInstanceMethod instance method-str (to- array args))) (let [ts toString, ct compareTo] (println (str-invoke ts 5)) (println (str-invoke ct 5 4)) (println (str-invoke ct 5 5))) ie: this is just using reflection as pmf suggested, however I think this form is more convenient as Clojure's Reflector class does all the hard work of matching the parameters for you. I'm sure someone will post a macro solution, but hopefully this will do till then. Regards, Tim. --~--~-~--~~~---~--~~ 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 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 -~--~~~~--~~--~--~---
