Re: classpath in clojure box
Shawn Hoover wrote: On Wed, Jan 13, 2010 at 8:38 PM, brian brw...@gmail.com mailto:brw...@gmail.com wrote: I was wondering if this is the right statement for setting the external classpath? setq swank-clojure-classpath Another way is to use M-x swank-clojure-project. You enter a directory and it automatically adds that directory/src to the classpath. You could drop all of the shcloj-code\code into, say, this didn't work c:\projects\shcloj\src. M-x swank-clojure-project and at the prompt c:\projects\shcloj. Then try (require 'examples.introduction). If that doesn't work, check the value of swank-clojure-classpath after the REPL starts: C-h v swank-clojure-classpath. Make sure it looks good and then fire up SysInternals ProcMon and filter on *.clj and see where the system is really looking. Shawn, The above didn't work, but apparently it doesn't pick up my .emacs file, which has (setq swank-clojure-classpath (list c:/shcloj-code/code/examples)) itknows where home is, when it boots up, the default is my home dir, where .emacs is when i do C-h v swank-clojure-classpath is a variable defined in `swank-clojure.el'. Its value is (c:/Program Files/Clojure Box/emacs/site-lisp/../../swank-clojure/src c:/shcloj-code/code/examples c:/Program Files/Clojure Box/lib/clojure-contrib.jar c:/Program Files/Clojure Box/lib/clojure.jar c:/Program Files/Clojure Box/lib/commons-codec-1.3.jar c:/Program Files/Clojure Box/lib/commons-fileupload-1.2.1.jar c:/Program Files/Clojure Box/lib/commons-io-1.4.jar c:/Program Files/Clojure Box/lib/compojure.jar c:/Program Files/Clojure Box/lib/grizzly-http-servlet-1.9.10.jar c:/Program Files/Clojure Box/lib/grizzly-http-webserver-1.9.10.jar c:/Program Files/Clojure Box/lib/jetty-6.1.15.jar c:/Program Files/Clojure Box/lib/jetty-util-6.1.15.jar c:/Program Files/Clojure Box/lib/servlet-api-2.5-20081211.jar) -- 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: classpath in clojure box
2010/1/14 brian brw...@gmail.com: Shawn Hoover wrote: On Wed, Jan 13, 2010 at 8:38 PM, brian brw...@gmail.com mailto:brw...@gmail.com wrote: I was wondering if this is the right statement for setting the external classpath? setq swank-clojure-classpath Another way is to use M-x swank-clojure-project. You enter a directory and it automatically adds that directory/src to the classpath. You could drop all of the shcloj-code\code into, say, this didn't work c:\projects\shcloj\src. M-x swank-clojure-project and at the prompt c:\projects\shcloj. Then try (require 'examples.introduction). Just a thought: Add c:/shcloj-code/code (without the examples) to your classpath and then (use 'examples.introduction) as mentioned by Sean above. I haven't tried this myself or looked at the code, but I suspect that's what the problem is. If that doesn't work, check the value of swank-clojure-classpath after the REPL starts: C-h v swank-clojure-classpath. Make sure it looks good and then fire up SysInternals ProcMon and filter on *.clj and see where the system is really looking. Shawn, The above didn't work, but apparently it doesn't pick up my .emacs file, which has (setq swank-clojure-classpath (list c:/shcloj-code/code/examples)) itknows where home is, when it boots up, the default is my home dir, where .emacs is when i do C-h v swank-clojure-classpath is a variable defined in `swank-clojure.el'. Its value is (c:/Program Files/Clojure Box/emacs/site-lisp/../../swank-clojure/src c:/shcloj-code/code/examples c:/Program Files/Clojure Box/lib/clojure-contrib.jar c:/Program Files/Clojure Box/lib/clojure.jar c:/Program Files/Clojure Box/lib/commons-codec-1.3.jar c:/Program Files/Clojure Box/lib/commons-fileupload-1.2.1.jar c:/Program Files/Clojure Box/lib/commons-io-1.4.jar c:/Program Files/Clojure Box/lib/compojure.jar c:/Program Files/Clojure Box/lib/grizzly-http-servlet-1.9.10.jar c:/Program Files/Clojure Box/lib/grizzly-http-webserver-1.9.10.jar c:/Program Files/Clojure Box/lib/jetty-6.1.15.jar c:/Program Files/Clojure Box/lib/jetty-util-6.1.15.jar c:/Program Files/Clojure Box/lib/servlet-api-2.5-20081211.jar) -- Michael Wood esiot...@gmail.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: classpath in clojure box
Michael Wood wrote: 2010/1/14 brian brw...@gmail.com: Shawn Hoover wrote: On Wed, Jan 13, 2010 at 8:38 PM, brian brw...@gmail.com mailto:brw...@gmail.com wrote: I was wondering if this is the right statement for setting the external classpath? setq swank-clojure-classpath Another way is to use M-x swank-clojure-project. You enter a directory and it automatically adds that directory/src to the classpath. You could drop all of the shcloj-code\code into, say, this didn't work c:\projects\shcloj\src. M-x swank-clojure-project and at the prompt c:\projects\shcloj. Then try (require 'examples.introduction). Just a thought: Add c:/shcloj-code/code (without the examples) to your classpath and then (use 'examples.introduction) as mentioned by Sean above. I haven't tried this myself or looked at the code, but I suspect that's what the problem is. gee, i thought that would work, but nope If that doesn't work, check the value of swank-clojure-classpath after the REPL starts: C-h v swank-clojure-classpath. Make sure it looks good and then fire up SysInternals ProcMon and filter on *.clj and see where the system is really looking. Shawn, The above didn't work, but apparently it doesn't pick up my .emacs file, which has (setq swank-clojure-classpath (list c:/shcloj-code/code/examples)) itknows where home is, when it boots up, the default is my home dir, where .emacs is when i do C-h v swank-clojure-classpath is a variable defined in `swank-clojure.el'. Its value is (c:/Program Files/Clojure Box/emacs/site-lisp/../../swank-clojure/src c:/shcloj-code/code/examples c:/Program Files/Clojure Box/lib/clojure-contrib.jar c:/Program Files/Clojure Box/lib/clojure.jar c:/Program Files/Clojure Box/lib/commons-codec-1.3.jar c:/Program Files/Clojure Box/lib/commons-fileupload-1.2.1.jar c:/Program Files/Clojure Box/lib/commons-io-1.4.jar c:/Program Files/Clojure Box/lib/compojure.jar c:/Program Files/Clojure Box/lib/grizzly-http-servlet-1.9.10.jar c:/Program Files/Clojure Box/lib/grizzly-http-webserver-1.9.10.jar c:/Program Files/Clojure Box/lib/jetty-6.1.15.jar c:/Program Files/Clojure Box/lib/jetty-util-6.1.15.jar c:/Program Files/Clojure Box/lib/servlet-api-2.5-20081211.jar) -- 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: classpath in clojure box
Michael Wood wrote: 2010/1/14 brian brw...@gmail.com: Shawn Hoover wrote: On Wed, Jan 13, 2010 at 8:38 PM, brian brw...@gmail.com mailto:brw...@gmail.com wrote: I was wondering if this is the right statement for setting the external classpath? setq swank-clojure-classpath Another way is to use M-x swank-clojure-project. You enter a directory and it automatically adds that directory/src to the classpath. You could drop all of the shcloj-code\code into, say, this didn't work c:\projects\shcloj\src. M-x swank-clojure-project and at the prompt c:\projects\shcloj. Then try (require 'examples.introduction). Just a thought: Add c:/shcloj-code/code (without the examples) to your classpath and then (use 'examples.introduction) as mentioned by Sean above. I haven't tried this myself or looked at the code, but I suspect that's what the problem is. I take that back,it did! hurray! here I called (take 10 fibs) and worked , instead of (take 10 introduction.fibs) which is what the book says If that doesn't work, check the value of swank-clojure-classpath after the REPL starts: C-h v swank-clojure-classpath. Make sure it looks good and then fire up SysInternals ProcMon and filter on *.clj and see where the system is really looking. Shawn, The above didn't work, but apparently it doesn't pick up my .emacs file, which has (setq swank-clojure-classpath (list c:/shcloj-code/code/examples)) itknows where home is, when it boots up, the default is my home dir, where .emacs is when i do C-h v swank-clojure-classpath is a variable defined in `swank-clojure.el'. Its value is (c:/Program Files/Clojure Box/emacs/site-lisp/../../swank-clojure/src c:/shcloj-code/code/examples c:/Program Files/Clojure Box/lib/clojure-contrib.jar c:/Program Files/Clojure Box/lib/clojure.jar c:/Program Files/Clojure Box/lib/commons-codec-1.3.jar c:/Program Files/Clojure Box/lib/commons-fileupload-1.2.1.jar c:/Program Files/Clojure Box/lib/commons-io-1.4.jar c:/Program Files/Clojure Box/lib/compojure.jar c:/Program Files/Clojure Box/lib/grizzly-http-servlet-1.9.10.jar c:/Program Files/Clojure Box/lib/grizzly-http-webserver-1.9.10.jar c:/Program Files/Clojure Box/lib/jetty-6.1.15.jar c:/Program Files/Clojure Box/lib/jetty-util-6.1.15.jar c:/Program Files/Clojure Box/lib/servlet-api-2.5-20081211.jar) -- 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: I'm going to teach Clojure at university - suggestions/comments?
Dober dan gospodine, A few years ago I taught two semesters of web application programming to undergraduates using Ruby on Rails. None of them had any experience with either programming in Ruby or developing for the web before we started, but by most accounts it was a success. Maybe some of what we learned can help you... We structured the class as if we were all working on an open source project together. We setup a Subversion repository and a mailing list, and asked everyone to brainstorm project ideas during the first few weeks of the course while they were learning the basics of Ruby through a series of short programming exercises. Eventually every student submitted an idea or two, and they all voted to create a wiki like system that supported multi-media in a nice way. From there on, we operated in two week cycles. At the beginning of each cycle we would have a class discussion about what features to work on, which bugs to fix, how to design important parts of the system, etc. Everyone had to choose something they wanted to work on, submit a short description of what they would do and how they plan on doing it, and then do it. Communication on the mailing list started slow. People were nervous about embarrassing themselves in front of their classmates, and everyone was just starting in Ruby. The first commits to the source tree were also pretty small and quite often very buggy. Every time a student came to us with questions we would ask them to first post it to the list though, and every time someone found a bug we asked them to post it so we can put it on the TODO list for next cycle. For the first 5-6 weeks of the project we spent most of the lectures going through code together, teaching more detailed lectures on web app architecture, routing HTTP requests, model-view-controller, object relational mapping, view templates, a little about javascript, etc. Every lecture started with a clarification section though. Typically about 10 minutes covering concepts that we could tell people were struggling with by looking at their patches each week. Eventually it really took off. Traffic on the mailing list literally doubled every couple weeks from the start to the finish of the semester, and submissions to the source tree kept getting more interesting and more effective. There were plenty of bumps in the road, social problems between competing interests, and all the other student/open-source debates that come up, but that was also part of the reason for doing the course the way we did it. By the end of the semester they had a working application with lots of cool functionality to demo to the rest of the faculty, and not only did the students seem more confident in terms of picking up a new language and a new technology, but they were also comfortable joining mailing lists and taking part in the greater software development community. My advice would be to have a lecture plan for every week, whether you get to it or not. Students feel it when the course lacks structure, and in turn they will lose motivation and discipline also. Try to setup some policies in the beginning in terms of how assignments work, when things are due, and what kind of code you expect, and then stick with it. I guess this is kind of generic advice, but especially in a class that feels less traditional I think it's even more important to have this kind of stability for the students. It was definitely the more challenging part of teaching for us, but when we succeeded it was obvious. Good luck! -Jeff P.S. The great thing about the internet and the software world is that it doesn't really matter where you are. If your students learn the right skills and practice lots I think they have a good chance of finding work remotely or creating sites/services that can be used by the rest of the world. Don't let a limited local economy limit their ambitions. Hi, This semester I'm teaching a course at MSc studies, and I decided to base it on Clojure. Sorry, It's not a sign that Clojure gets the ground in USA - I'm in South-Eastern Europe, at University of Belgrade (cca 90.000 students altogether, the largest university in the region, but underdeveloped economy comparing to EU). The course title is not that important, as I am free to organize it as I like (for the curious, it's Tools and Methods of Software Engineering). In this region, Lisp is non-existent in the industry, which is usually based on Java, Oracle stack or Microsoft stack, plus the usual PHP in smaller projects and with the hobbyist crowd. The undergraduate courses are based on Java and in a smaller extent C#, so it's a usual traditional programming mindset. The faculty I'm teaching at is an exotic mixture of management / information systems departments, so even inf. syst. students attend more management-related than IS-related courses. So, not many typical geeks are going to be in the crowd. This course is a part of Software Engineering
Re: I'm going to teach Clojure at university - suggestions/comments?
Thanks Jeff, that was a really interesting report. I'd like to do something like this - unfortunately, it's difficult to enforce here because many students would start the riots (just kidding) :) As for the local economy, it's not a problem in a sense of employment opportunity - half of them eventually move to EU, Canada or USA. The problem is more with the alternative/exotic/emerging languages - they simply want something that guarantees employment locally and abroad (Java/.NET), and they are right. On Jan 14, 11:55 am, Jeff Rose ros...@gmail.com wrote: Dober dan gospodine, A few years ago I taught two semesters of web application programming to undergraduates using Ruby on Rails. None of them had any experience with either programming in Ruby or developing for the web before we started, but by most accounts it was a success. Maybe some of what we learned can help you... We structured the class as if we were all working on an open source project together. We setup a Subversion repository and a mailing list, and asked everyone to brainstorm project ideas during the first few weeks of the course while they were learning the basics of Ruby through a series of short programming exercises. Eventually every student submitted an idea or two, and they all voted to create a wiki like system that supported multi-media in a nice way. From there on, we operated in two week cycles. At the beginning of each cycle we would have a class discussion about what features to work on, which bugs to fix, how to design important parts of the system, etc. Everyone had to choose something they wanted to work on, submit a short description of what they would do and how they plan on doing it, and then do it. Communication on the mailing list started slow. People were nervous about embarrassing themselves in front of their classmates, and everyone was just starting in Ruby. The first commits to the source tree were also pretty small and quite often very buggy. Every time a student came to us with questions we would ask them to first post it to the list though, and every time someone found a bug we asked them to post it so we can put it on the TODO list for next cycle. For the first 5-6 weeks of the project we spent most of the lectures going through code together, teaching more detailed lectures on web app architecture, routing HTTP requests, model-view-controller, object relational mapping, view templates, a little about javascript, etc. Every lecture started with a clarification section though. Typically about 10 minutes covering concepts that we could tell people were struggling with by looking at their patches each week. Eventually it really took off. Traffic on the mailing list literally doubled every couple weeks from the start to the finish of the semester, and submissions to the source tree kept getting more interesting and more effective. There were plenty of bumps in the road, social problems between competing interests, and all the other student/open-source debates that come up, but that was also part of the reason for doing the course the way we did it. By the end of the semester they had a working application with lots of cool functionality to demo to the rest of the faculty, and not only did the students seem more confident in terms of picking up a new language and a new technology, but they were also comfortable joining mailing lists and taking part in the greater software development community. My advice would be to have a lecture plan for every week, whether you get to it or not. Students feel it when the course lacks structure, and in turn they will lose motivation and discipline also. Try to setup some policies in the beginning in terms of how assignments work, when things are due, and what kind of code you expect, and then stick with it. I guess this is kind of generic advice, but especially in a class that feels less traditional I think it's even more important to have this kind of stability for the students. It was definitely the more challenging part of teaching for us, but when we succeeded it was obvious. Good luck! -Jeff P.S. The great thing about the internet and the software world is that it doesn't really matter where you are. If your students learn the right skills and practice lots I think they have a good chance of finding work remotely or creating sites/services that can be used by the rest of the world. Don't let a limited local economy limit their ambitions. Hi, This semester I'm teaching a course at MSc studies, and I decided to base it on Clojure. Sorry, It's not a sign that Clojure gets the ground in USA - I'm in South-Eastern Europe, at University of Belgrade (cca 90.000 students altogether, the largest university in the region, but underdeveloped economy comparing to EU). The course title is not that important, as I am free to organize it as I like (for the curious, it's Tools and
Re: classpath in clojure box
On Thu, Jan 14, 2010 at 3:17 AM, brian brw...@gmail.com wrote: The above didn't work, but apparently it doesn't pick up my .emacs file, which has (setq swank-clojure-classpath (list c:/shcloj-code/code/examples)) itknows where home is, when it boots up, the default is my home dir, where .emacs is when i do C-h v swank-clojure-classpath is a variable defined in `swank-clojure.el'. Its value is (c:/Program Files/Clojure Box/emacs/site-lisp/../../swank-clojure/src c:/shcloj-code/code/examples c:/Program Files/Clojure Box/lib/clojure-contrib.jar c:/Program Files/Clojure Box/lib/clojure.jar c:/Program Files/Clojure Box/lib/commons-codec-1.3.jar c:/Program Files/Clojure Box/lib/commons-fileupload-1.2.1.jar c:/Program Files/Clojure Box/lib/commons-io-1.4.jar c:/Program Files/Clojure Box/lib/compojure.jar c:/Program Files/Clojure Box/lib/grizzly-http-servlet-1.9.10.jar c:/Program Files/Clojure Box/lib/grizzly-http-webserver-1.9.10.jar c:/Program Files/Clojure Box/lib/jetty-6.1.15.jar c:/Program Files/Clojure Box/lib/jetty-util-6.1.15.jar c:/Program Files/Clojure Box/lib/servlet-api-2.5-20081211.jar) Actually it's there, buried between the swank-clojure/src and clojure-contrib.jar. It's Clojure Box's fault on the ordering, but it would only matter if you were trying to put your own version of swank-clojure on the classpath. -- 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: Help needed regarding the let
Hi, On Wed, Jan 13, 2010 at 1:30 AM, Manish manish.zed...@gmail.com wrote: Thanx for ur response, Actually We are using string builder in our project, String Builder causing the memory leak in as I google, Thats the main reason i want to set the StringBuilder object to nil, We are using the htmlunit core js library for fetching the web pages which require the javascript enabled. The Decompiler.java using a variable StringBuilder result = new StringBuilder(); Netbeans profiler showing that this is the object consuming maximum of memory causing memory leak. Thats the reason only I want to set the StringBuilder object in our project to null. I also found on net that strbuilder.toString() also causing the memory leak. So in place of toString() we are trying to use substring(0). Like: (defn #^String element-text ([thing] (let [delimiter #s] (element-text thing delimiter) )) ([thing #^String delimiter] (if (instance? Node thing) (node-text thing) (let [buf (StringBuilder.)] (doseq [#^Node e thing] (node-text e buf delimiter)) (let [res (.substring buf 0)] (.setLength buf 0) res) Substrings do indeed share memory with their parent strings, and this will prevent the parents from being garbage-collected. Try changing this: (let [res (.substring buf 0)] (.setLength buf 0) res)) to: (String. buf) and see if your memory problem goes away. Allocating a new String should copy the StringBuilder buffer, not sharing any storage with it, and letting the StringBuffer storage be reclaimed. Best, Graham -- 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
NYC Clojure Users Group Meeting for Jan 28th - I reserved a bigger space!
I've reserved a larger space to accommodate 55 people (we were out of room). There will be desks in the front and rows of seats in the back so come a bit early if you want a desk. For more details, see the full listing: http://www.meetup.com/Clojure-NYC/calendar/12228936/ When: Thursday, January 28, 2010 6:30 PM Where: NYC Seminar and Conference Center 71 West 23rd Street NY, NY 10010 1-866-807-1114 Looking forward to seeing you there. Thanks, Eric -- 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] units.clj - unit conversion functions without repeating yourself
Hi, I created a library that provides unit conversion functions[1] for several common units and allows you to define new units conversions with a single equation. The library does a few interesting things automatically: First, if you define inches-to-feet, it will create feet-to-inches for you. Second, if you define inches-to-feet and feet-to-meters, it will create inches-to-meters and meters-to-inches for you. Third, it will create the equivalent square and cubic functions as well. So for inches, feet, yards, meters, centimeters, millimeters, miles, and kilometers, if you specify 7 equations this library will define 168 conversion functions for you (56 each for length, area, and volume). The code is at http://gist.github.com/276662#file_units.clj I'd love to receive feedback. Thanks, Scott Notes [1] For a reliable alternative, see JScience.org -- 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
NullPointerException from #' et al.
Hi, out of curiosity, what is the reasoning behind this behavior (I'm pretty sure it is intended): (= nil 1) = false ( nil 1) ;; NullPointerException Same behavior for = = etc. Florian -- Florian Ebeling florian.ebel...@gmail.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: NullPointerException from #' et al.
What do you think should be the boolean result of ( nil 1)? Since the inequality functions only work with Numbers, and nil is not a Number. The only way to make that work would be to impute some default numerical value to nil, which would probably introduce more problems than it solved. On Jan 14, 7:57 am, C. Florian Ebeling florian.ebel...@gmail.com wrote: Hi, out of curiosity, what is the reasoning behind this behavior (I'm pretty sure it is intended): (= nil 1) = false ( nil 1) ;; NullPointerException Same behavior for = = etc. Florian -- Florian Ebeling florian.ebel...@gmail.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: NullPointerException from #' et al.
What do you think should be the boolean result of ( nil 1)? Since the inequality functions only work with Numbers, and nil is not a Number. The only way to make that work would be to impute some default numerical value to nil, which would probably introduce more problems than it solved. I agree. It only looks inconsistent when you assume nil is treated uniformly by these comparison function, which does not make sense. Sorry, this question was probably a tad stupid :) -- Florian Ebeling florian.ebel...@gmail.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: [ANN] units.clj - unit conversion functions without repeating yourself
This is more java related but there is a java library and application ( http://futureboy.us/frinkdocs/) that provides a set of very powerful unit conversion tools. On Thu, Jan 14, 2010 at 10:49 AM, Scott Jaderholm jaderh...@gmail.comwrote: Hi, I created a library that provides unit conversion functions[1] for several common units and allows you to define new units conversions with a single equation. The library does a few interesting things automatically: First, if you define inches-to-feet, it will create feet-to-inches for you. Second, if you define inches-to-feet and feet-to-meters, it will create inches-to-meters and meters-to-inches for you. Third, it will create the equivalent square and cubic functions as well. So for inches, feet, yards, meters, centimeters, millimeters, miles, and kilometers, if you specify 7 equations this library will define 168 conversion functions for you (56 each for length, area, and volume). The code is at http://gist.github.com/276662#file_units.clj I'd love to receive feedback. Thanks, Scott Notes [1] For a reliable alternative, see JScience.org -- 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.comclojure%2bunsubscr...@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: deftype and macros
On 14.01.2010, at 08:35, Konrad Hinsen wrote: This one failed yesterday on my office computer, but now I tried it again at home and it works fine: .. I'll check again on my office machine later today. It failed indeed, but after recompilation of Clojure and Contrib it works fine now. Sorry for the false alarm! Konrad. -- 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
Compilation-aware code?
Some people have had issues with c.c.logging in that it looks for a suitable logging implementation at macro-expansion-time (by simply trying to import the necessary classes), which thus also occurs during AOT compilation; the down-side is that if the desired logging lib is not on the classpath during compilation, the java.util.logging implementation gets selected into the compiled code. There are solutions to move this choice to runtime, though it adds some overhead to every invocation, even if the respective log level is disabled. It occurs to me it would be very nice indeed if I could provide alternate implementations depending on whether the clojure code was being executed as a .clj or an AOTC'd .class file. Knowing this would further allow the specification of env vars to influence the resulting code, e.g., telling c.c.logging that even though it's being AOTC'd, it can choose the logging impl right away since it's on the classpath (thus negating the performance hit of a runtime selection). Does anyone have a sense of whether or not this is possible already or, if not, worth doing? -- 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: Compilation-aware code?
hmm... perhaps one could have a form called something like ... oh, I dunno, maybe ... eval-when! And then one could have situations like :compile-toplevel and :load-toplevel and, maybe, :execute. Nah... that's a crazy idea; never mind... :) Cyrus On Jan 14, 2010, at 9:22 AM, ataggart wrote: Some people have had issues with c.c.logging in that it looks for a suitable logging implementation at macro-expansion-time (by simply trying to import the necessary classes), which thus also occurs during AOT compilation; the down-side is that if the desired logging lib is not on the classpath during compilation, the java.util.logging implementation gets selected into the compiled code. There are solutions to move this choice to runtime, though it adds some overhead to every invocation, even if the respective log level is disabled. It occurs to me it would be very nice indeed if I could provide alternate implementations depending on whether the clojure code was being executed as a .clj or an AOTC'd .class file. Knowing this would further allow the specification of env vars to influence the resulting code, e.g., telling c.c.logging that even though it's being AOTC'd, it can choose the logging impl right away since it's on the classpath (thus negating the performance hit of a runtime selection). Does anyone have a sense of whether or not this is possible already or, if not, worth doing? -- 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: Compilation-aware code?
I'm detecting sarcasm, but it's not clear to me what point you're trying to make. Care to be more helpful or enlightening? On Jan 14, 12:09 pm, Cyrus Harmon cyrushar...@gmail.com wrote: hmm... perhaps one could have a form called something like ... oh, I dunno, maybe ... eval-when! And then one could have situations like :compile-toplevel and :load-toplevel and, maybe, :execute. Nah... that's a crazy idea; never mind... :) Cyrus On Jan 14, 2010, at 9:22 AM, ataggart wrote: Some people have had issues with c.c.logging in that it looks for a suitable logging implementation at macro-expansion-time (by simply trying to import the necessary classes), which thus also occurs during AOT compilation; the down-side is that if the desired logging lib is not on the classpath during compilation, the java.util.logging implementation gets selected into the compiled code. There are solutions to move this choice to runtime, though it adds some overhead to every invocation, even if the respective log level is disabled. It occurs to me it would be very nice indeed if I could provide alternate implementations depending on whether the clojure code was being executed as a .clj or an AOTC'd .class file. Knowing this would further allow the specification of env vars to influence the resulting code, e.g., telling c.c.logging that even though it's being AOTC'd, it can choose the logging impl right away since it's on the classpath (thus negating the performance hit of a runtime selection). Does anyone have a sense of whether or not this is possible already or, if not, worth doing? -- 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: NullPointerException from #' et al.
On Jan 14, 9:00 am, C. Florian Ebeling florian.ebel...@gmail.com wrote: What do you think should be the boolean result of ( nil 1)? Since the inequality functions only work with Numbers, and nil is not a Number. The only way to make that work would be to impute some default numerical value to nil, which would probably introduce more problems than it solved. I agree. It only looks inconsistent when you assume nil is treated uniformly by these comparison function, which does not make sense. Perhaps you should use compare, which doesn't have the numerical restriction and also works well with nil. -- 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: NullPointerException from #' et al.
Also, it is consistent given that == is the numerical analogue to =, etc. -- 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: Compilation-aware code?
I was referring to common lisp's eval-when special operator: http://www.lispworks.com/documentation/HyperSpec/Body/s_eval_w.htm cyrus On Jan 14, 2010, at 12:22 PM, ataggart wrote: I'm detecting sarcasm, but it's not clear to me what point you're trying to make. Care to be more helpful or enlightening? On Jan 14, 12:09 pm, Cyrus Harmon cyrushar...@gmail.com wrote: hmm... perhaps one could have a form called something like ... oh, I dunno, maybe ... eval-when! And then one could have situations like :compile-toplevel and :load-toplevel and, maybe, :execute. Nah... that's a crazy idea; never mind... :) Cyrus -- 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: units.clj - unit conversion functions without repeating yourself
On Jan 14, 10:12 am, Brian brian.fores...@gmail.com wrote: This is more java related but there is a java library and application (http://futureboy.us/frinkdocs/) that provides a set of very powerful unit conversion tools. I have always liked the units tool available here: http://www.gnu.org/software/units/. I have never looked at the code, but the data file defines literally 1000s of units. Check out the units.dat file in the distribution if you are interested. On Thu, Jan 14, 2010 at 10:49 AM, Scott Jaderholm jaderh...@gmail.comwrote: Hi, I created a library that provides unit conversion functions[1] for several common units and allows you to define new units conversions with a single equation. I presume the name of your program and the one I referenced above is a coincidence? Seems like the natural name for a program of this sort. I'd love to receive feedback. Thanks, Scott Mike Davis -- 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: Redis-Clojure: NoRouteToHostException
Timothy, Thanks for the suggestion. Creating a million keys within the same with-server is possible, without seeing the NoRouteToHostException. So, hitting with-server so many times in so short a time period is definitely a bad idea (duh). So, I think there is a problem with how my larger program (not in the gist) is using the redis-clojure library. I'm still seeing intermitted problems with Not able to read expected number or bytes which might be related. I'll post here if it turns out that it's related. Also, thanks for the dotimes/doseq suggestion. I hadn't worried about it, since it was just a quick example. But, thanks for the tip. Regards, Kyle On Jan 13, 1:29 pm, Timothy Pratley timothyprat...@gmail.com wrote: 2010/1/14 mudphone kyle...@gmail.com: I believe it has to do with opening too many sockets on the Redis server, rather than the total number of members in the set. Sounds possible. It would be worthwhile seeing if (redis/with-server REDIS-SPEC (dotimes [i 10] (redis/sadd large-set (random-value i works as expected (ie: using just one connection) to help isolate the problem. From looking athttp://github.com/ragnard/redis-clojure/blob/master/src/redis/interna... it appears that the sockets are cleaned up... so I'm thinking it is actually more likely that the sockets are closed, but that you use them all so fast that none are available before you request a new one because their timeout has not expired. Sockets bind to a fixed remote host port and a (usually) random local port. But the local ports cannot be reused immediately (there is a timeout) unless the socket specifically is set as reuse. If you ran out of sockets I would expect an exception more like no file descriptors. You could run netstat when your program is half-way done to get a better picture. Any suggestions appreciated. Consider using dotimes, or doseq instead of loop/recur (doseq [i (range 10 0 -1)] (println i)) ;; if you want to count down instead of up I'm not a Redis user yet so apologies if not helpful. 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 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: NullPointerException from #' et al.
2010/1/15 C. Florian Ebeling florian.ebel...@gmail.com: I agree. It only looks inconsistent when you assume nil is treated uniformly by these comparison function, which does not make sense. I quite often wish to compare comparable objects that are not numbers and wrote some simple operators to do that: user= (? \a \b \c) true user= (? \c \b) false user= (? 1 nil) false user= (? nil 1) true Which would work in your situation... However if you are using numbers but sometimes encounter nil, then a better solution would be to use fnil, which is a function that returns a function that will substitute any nil arguments with some default value. This is very handy shorthand when you have nil data points that you want to treat as zero: user= ((fnil 0 0 ) nil 1) true user= ((fnil 0 0 ) 1 nil) false You can find the implementation for both object comparator operators and fnil from my github if you are interested: http://github.com/timothypratley/strive/blob/master/clj/timothypratley/extensions.clj 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 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
StackOverflowError possible with seq ?
Is it possible that the Clojure core seq function can cause a stack overflow (since it calls itself)? Or is there some other manner in which misuse of a lazy seq could cause this? In the stack trace below, I'm seeing repeated calls to seq in clojure core, until the stack is blown. Thanks, Kyle Exception in thread main java.lang.StackOverflowError (session_master_boot.clj:19) at clojure.lang.Compiler.eval(Compiler.java:4617) at clojure.lang.Compiler.eval(Compiler.java:4593) at clojure.lang.Compiler.load(Compiler.java:4931) at clojure.lang.Compiler.loadFile(Compiler.java:4898) at clojure.main$load_script__6637.invoke(main.clj:210) at clojure.main$init_opt__6640.invoke(main.clj:215) at clojure.main$initialize__6650.invoke(main.clj:243) at clojure.main$null_opt__6672.invoke(main.clj:268) at clojure.main$legacy_script__6687.invoke(main.clj:299) at clojure.lang.Var.invoke(Var.java:359) at clojure.main.legacy_script(main.java:32) at clojure.lang.Script.main(Script.java:20) Caused by: java.lang.StackOverflowError at clojure.core$seq__3835.invoke(core.clj:103) at clojure.core$concat__3960$fn__3970.invoke(core.clj:427) at clojure.lang.LazySeq.sval(LazySeq.java:42) at clojure.lang.LazySeq.seq(LazySeq.java:56) at clojure.lang.RT.seq(RT.java:440) at clojure.core$seq__3835.invoke(core.clj:103) at clojure.core$concat__3960$fn__3970.invoke(core.clj:427) at clojure.lang.LazySeq.sval(LazySeq.java:42) at clojure.lang.LazySeq.seq(LazySeq.java:56) at clojure.lang.RT.seq(RT.java:440) at clojure.core$seq__3835.invoke(core.clj:103) at clojure.core$concat__3960$fn__3970.invoke(core.clj:427) at clojure.lang.LazySeq.sval(LazySeq.java:42) at clojure.lang.LazySeq.seq(LazySeq.java:56) at clojure.lang.RT.seq(RT.java:440) at clojure.core$seq__3835.invoke(core.clj:103) at clojure.core$concat__3960$fn__3970.invoke(core.clj:427) at clojure.lang.LazySeq.sval(LazySeq.java:42) at clojure.lang.LazySeq.seq(LazySeq.java:56) at clojure.lang.RT.seq(RT.java:440) -- 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: dgraph 1.0, a dependency graph library for Clojure
I would like to announce the release of dgraph 1.0, a dependency graph implementation for Clojure. http://github.com/gcv/dgraph dgraph provides a mostly pure functional data structure whose nodes behave like cells in a spreadsheet. Data changes in stored nodes cause their dependent computed nodes to invalidate and recalculate themselves. Dependency graphs are immutable, just like Clojure's built- in persistent data structures, so changing a stored node actually augments an existing graph and returns a new one with shared structure. I wrote this to simplify UI programming, and it has helped reduce the pain significantly. The README file in the GitHub repository has some usage examples and ideas. Comments and bug reports welcome. Thanks, Constantine Vetoshev -- 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: dgraph 1.0, a dependency graph library for Clojure
Hi Constantine, Very interesting! I'll definitely be trying this out. To give me a head-start, are there key differences with clojure.contrib.dataflow so I can better understand? Regards, Tim. 2010/1/15 Constantine Vetoshev gepar...@gmail.com: I would like to announce the release of dgraph 1.0, a dependency graph implementation for Clojure. http://github.com/gcv/dgraph dgraph provides a mostly pure functional data structure whose nodes behave like cells in a spreadsheet. Data changes in stored nodes cause their dependent computed nodes to invalidate and recalculate themselves. Dependency graphs are immutable, just like Clojure's built- in persistent data structures, so changing a stored node actually augments an existing graph and returns a new one with shared structure. I wrote this to simplify UI programming, and it has helped reduce the pain significantly. The README file in the GitHub repository has some usage examples and ideas. Comments and bug reports welcome. Thanks, Constantine Vetoshev -- 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: units.clj - unit conversion functions without repeating yourself
On 14 Jan, 15:49, Scott Jaderholm jaderh...@gmail.com wrote: Hi, I created a library that provides unit conversion functions[1] for several common units and allows you to define new units conversions with a single equation. The code is athttp://gist.github.com/276662#file_units.clj I'd love to receive feedback. Speaking as a complete Clojure newbie, I'm well impressed! I downloaded that, had a wee look, though, 'H'mmm... I wonder how you'd extend this to handle things like celsius/fahrenheit where there isn't just a simple linear equivalence', and dammit, you've got there already. I shall study 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
Re: Creating an object given a class object
On Jan 12, 1:50 am, Konrad Hinsen konrad.hin...@fastmail.net wrote:
On 11 Jan 2010, at 23:09, .Bill Smith wrote:
Every class object has a newInstance method:
user= (Class/forName java.util.HashMap)
java.util.HashMap
user= (.newInstance (Class/forName java.util.HashMap))
#HashMap {}
user=
Is that what you are looking for?
It seems close, but it doesn't work for me. From experimenting I have
the impression that this works only for constructors with no arguments.
I found some stuff in the Java docs on reflection that could work, but
this is getting very complicated... I'll first see if I can do without.
Thanks,
Konrad.
I have this lying around for situations where I need to call an
arbitrary constructor:
(defn construct [desc]
(let [dclass (:class desc)
initargs (to-array (:initargs desc))
initclasses (make-array Class (count initargs))]
(doseq [i (range 0 (count initclasses))]
(aset initclasses i (class (aget initargs i
(let [constructor (. dclass (getConstructor initclasses))]
(if constructor
(. constructor (newInstance initargs))
(throw (Exception. (format no %s constructor for args: %s
(str dclass) (map str
initclasses
Why the rigamarole with make-array and aset, rather than to-array or
into-array? To ensure that I *always* get a Class[], even when the
input list is empty (the reflection calls are finicky about that).
--
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: Many foolish questions
but the reader spits an illegal argument exception. Is there different syntax which the reader could parse? Or am I using the wrong kind of thing? Wrong kind of thing. defstruct defines a struct-map, which is simply a map with some guaranteed keys. It doesn't make any assertions about the values of those keys. You could (as you did) define a creator function for a map (doesn't have to be a struct-map) that checks the types of its arguments and errors otherwise, but -- as you observed -- generally Clojure is not designed to do this kind of static type checking. It's a dynamic language. The new new work in Rich's non-mainline branches allows much more flexibility in avoiding the need to drop down to Java to achieve this kind of object definition, but that's not in 1.1. You might be interested in this: http://www.assembla.com/wiki/show/clojure/Datatypes -- 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: I'm going to teach Clojure at university - suggestions/comments?
The issue that is particularly interesting to me to explore is how alien Clojure is to Java programmers, what are subjective and objective causes, and how hard is to overcome each of the identified issues. This sounds very interesting. I try to explain the point of lisp to java programmers from time to time and I find it very difficult. When the conversation is about clojure I usually just point out that it's made for multi core because that's easier to understand and a good selling point, but that really doesn't have much to do with the lisp aspect. A year ago, I delivered a presentation about Clojure to a local Java user group. I talked about advantages of Lisp/Clojure and demonstrated Clojure's ability to interoperate with the Java libraries and code with which they were familiar. Everyone nodded their heads, said it was interesting and that they understood, and mostly forgot about it. http://ericlavigne.wordpress.com/2009/02/11/clojure-presentation-at-gatorjug/ A couple weeks ago, I used Clojure to win a contest sponsored by that group. In an afternoon, I wrote a web application in 100 lines of Clojure. http://ericlavigne.net:8054/ http://www.codetown.us/group/contesttown/forum/topics/wari-contest-1 http://github.com/ericlavigne/island-wari I was asked to discuss my code at the same group. We had no projector that day, so I actually wrote out my code, 10 lines at a time, on a whiteboard and explained how it worked. A lot of that time ended up being spent explaining various sequence functions like map, filter, and remove. Everyone was amazed at what Clojure could do with so little code. They were amazed by this strange, expression-oriented style of programming that didn't contain any statements. There was lots of discussion, and when I was busy writing more code the audience would break out into side discussions about coding style and whether concise code was even a good thing (one person claimed that they deliberately wrote verbosely so that they could understand their code later). One audience member said that he had already seen one Clojure presentation (mine) and two Scala presentations, and that he was finally having an aha moment and starting to understand what functional programming meant. They have asked me to continue talking about my little program next month, as everyone is still very curious about Clojure. My lesson: showing is better than telling. -- 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 can i better write this (reflection, str)?
You might change the method-dumps definition to this: method-dumps (map (fn [i x] (str i : x)) (range 0 method-count) methods) It isn't more compact but I suppose it's more Clojure-y. On Jan 14, 6:49 pm, Raoul Duke rao...@gmail.com wrote: hi, i'm guessing there is a more Clojure-y and compact way to do this. any suggestions would be appreciated. thank you. (defn reflection-dump [o] (let [methods (.getDeclaredMethods o) method-count (alength methods) method-dumps (map (fn [i] (str i : (nth methods i))) (range 0 method-count)) method-dump-str (apply str (interpose \n method-dumps)) header-str (str o has method-count (cond (= method-count 0) methods. (= method-count 1) method: true methods:)) full-str (if ( method-count 0) (concat header-str \n method-dump-str) header-str)] (apply str full-str))) -- 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: Bug with Clojure 1.2 REPL (aka master branch) ?
On Jan 12, 8:58 pm, aria42 ari...@gmail.com wrote: I was seeing this error too and I reckoned it was because my clojure.contribwas not compatible with clojure core. I think if you're using1.2master of clojure you need 1.1 master ofcontrib. Is that right? The 1.1 new branch of Contrib is compatible, at least for the moment, with the 1.2 master of Clojure. Has there been talk about making an official 1.2-compatible Contrib? Or, I suppose, after the 1.1 RC2 is accepted, Contrib development will track Clojure's HEAD make a 1.1-compatible branch? Perry -- 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: Funding Clojure 2010
I think it would be useful if there was some way to (mostly) automatically donate $10/month. -- 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: Funding Clojure 2010
I second this. = angol = -|-^...@^_^, =|+^_^X++~_~,@- www.onthe8spot.com http://www.facebook.com/giancarlo.angulo http://twitter.com/Neoryder On Fri, Jan 15, 2010 at 1:29 PM, Brian Goslinga quickbasicg...@gmail.comwrote: I think it would be useful if there was some way to (mostly) automatically donate $10/month. -- 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.comclojure%2bunsubscr...@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
