Re: Addition of new a priori distinct element to a vector
On Sep 23, 1:39 am, Nathan Sorenson n...@sfu.ca wrote: Just to clarify, you want to conj a vector to itself? i.e. [1 2 3 4] -- [1 2 3 4 [1 2 3 4]] I'm curious what the application of this is. Regarding the overhead of conj-ing to a vector: Clojure's data structures make use of structural sharing so conjoining an element to the end of a vector won't require any copying of entire vectors. It's a cheap, constant(ish) time operation. Good: (conj v v) is O(1) in time and space, and appends an element distinct from the preceding elements (if any). I meant to add that querying the vector is not allowed. The reason is to use reduce in situations where some data structure is created based on a previous and current element. If the last element is guaranteed to be different from those preceding it, then an edge case is eliminated (or rather, encoded into the sequence at minimal cost). -- 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: Addition of new a priori distinct element to a vector
To be very precise, (conj v new-elem) is O(log n) in time and space, but it is constant-ish because the base of the logarithm is something like 32, rather than something like 2, so the constant factor multiplying the log n is typically pretty small. Also, there is no difference in Clojure's behavior in this case whether the new element is different than all elements previously conj'd onto the vector. They could all be the same, and the time and space requirements would be exactly the same as if they were all distinct. If you happen to know that they are all distinct, that's your business :-) Andy On Thu, Sep 22, 2011 at 11:09 PM, F Lengyel florian.leng...@gmail.comwrote: On Sep 23, 1:39 am, Nathan Sorenson n...@sfu.ca wrote: Just to clarify, you want to conj a vector to itself? i.e. [1 2 3 4] -- [1 2 3 4 [1 2 3 4]] I'm curious what the application of this is. Regarding the overhead of conj-ing to a vector: Clojure's data structures make use of structural sharing so conjoining an element to the end of a vector won't require any copying of entire vectors. It's a cheap, constant(ish) time operation. Good: (conj v v) is O(1) in time and space, and appends an element distinct from the preceding elements (if any). I meant to add that querying the vector is not allowed. The reason is to use reduce in situations where some data structure is created based on a previous and current element. If the last element is guaranteed to be different from those preceding it, then an edge case is eliminated (or rather, encoded into the sequence at minimal cost). -- 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: Addition of new a priori distinct element to a vector
what's the actual use case where you want this? it seems pretty weird just on it's own. it may in practice be more clever than other solutions, but that's not clear yet. if you just want a unique symbol there's (gensym) regarding vectors, I found this a helpful read a while back, it's a few years old, but I think it's still accurate, and may help you get a picture of what's under the hood. http://blog.higher-order.net/2009/02/01/understanding-clojures-persistentvector-implementation/ Kevin On Sep 23, 12:09 am, F Lengyel florian.leng...@gmail.com wrote: On Sep 23, 1:39 am, Nathan Sorenson n...@sfu.ca wrote: Just to clarify, you want to conj a vector to itself? i.e. [1 2 3 4] -- [1 2 3 4 [1 2 3 4]] I'm curious what the application of this is. Regarding the overhead of conj-ing to a vector: Clojure's data structures make use of structural sharing so conjoining an element to the end of a vector won't require any copying of entire vectors. It's a cheap, constant(ish) time operation. Good: (conj v v) is O(1) in time and space, and appends an element distinct from the preceding elements (if any). I meant to add that querying the vector is not allowed. The reason is to use reduce in situations where some data structure is created based on a previous and current element. If the last element is guaranteed to be different from those preceding it, then an edge case is eliminated (or rather, encoded into the sequence at minimal cost). -- 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: Addition of new a priori distinct element to a vector
On Sep 23, 2:18 am, Andy Fingerhut andy.finger...@gmail.com wrote: To be very precise, (conj v new-elem) is O(log n) in time and space, but it is constant-ish because the base of the logarithm is something like 32, rather than something like 2, so the constant factor multiplying the log n is typically pretty small. OK, thanks. Also, there is no difference in Clojure's behavior in this case whether the new element is different than all elements previously conj'd onto the vector. Nor did I imply or suggest that it would be different. FL -- 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: Addition of new a priori distinct element to a vector
Hi, is there any particular reason not to use a Set instead of a vector? It solves the issue of distinct values. Or am I missing something? Regards, Stefan -- 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
Partitioning problem
Hi! I have a sequence of natural numbers and I have to partition them into more or less equals N groups. Partitioning function is just a sum of numbers in a given group. My naive solution is to sort numbers descending then take each number and put into one of N groups in which sum of its elements with given number is the lowest. Here is the code: http://pastebin.com/Nw28FaRK So for input [ 1 2 34 54 12 23 5 2 3 1 2 12 11 12 32 67 ] and N = 5 I get ([32 12 5 1 1] [34 12 2 2] [23 12 11 3 2] [54] [67]) Do you know any better solution? -- 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 attach debugger on clojure's repl ?
On 23 Sep 2011, at 06:14, Glen Stampoultzis wrote: Ritz looks really nice the setup seems complicated. I haven't had much luck setting it up unfortunately. Me neither. Here's the steps I took so far: * Cloned https://github.com/pallet/ritz to a tmp dir * Copied the slime dir inside ritz into my .emacs.d dir * Modified my global cake project.clj file to look as follows: (defproject global 0.0.0 :description Don't rename this project, but you can change the version if you want. :dependencies [[clojure 1.3.0-RC0]] :dev-dependencies [[ritz 0.1.8-SNAPSHOT]]) * Ran `cake deps --global` * My .cake dir now looks as follows: /Users/sam/.cake ├── build ├── classes ├── lib │ ├── clojure-1.3.0-RC0.jar │ ├── deps.clj │ └── dev │ ├── ritz-0.1.8-20110809.143608-3.jar │ └── useful-0.4.0.jar ├── pom.xml ├── project.clj ├── run └── templates └── default ├── LICENSE ├── project.clj ├── src │ └── +project+ │ └── core.clj └── test 10 directories, 9 files * The ritz README talks about making sure tools.clj is in the classpath. However, it appears on OS X there is no tools.jar: tools.jar does not exist. Classes usually located here are instead included in classes.jar. Scripts that rely on the existence of tools.jar need to be rewritten accordingly. (see http://developer.apple.com/library/mac/#documentation/Java/Conceptual/Java14Development/02-JavaDevTools/JavaDevTools.html) * I created a blank project with `cake new foo` * cd into foo * Ran `cake ritz` to get the error unknown task: ritz. I'm unsure where to go from here. How do I teach cake about the ritz task? Am I missing any specific steps? Is not having tools.jar available on OS X an issue? I'd be very happy to write up a Getting Started tutorial on the ritz wiki if I can get things working. Sam --- http://sam.aaron.name -- 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 attach debugger on clojure's repl ?
I don't think it looks for tools.jar specifically, it probably just uses the classes in there so as long as they're on the classpath you should be fine. I wouldn't worry about it unless you see an error saying it can't find some classes that googling reveals are in tools.jar. The README doesn't mention any cake plugins, that's why cake ritz isn't working. If cake supports lein plugins then maybe you didn't do lein plugin install ritz 0.1.7. Perhaps use lein or the maven plugin instead. Scott On Fri, Sep 23, 2011 at 8:00 AM, Sam Aaron samaa...@gmail.com wrote: On 23 Sep 2011, at 06:14, Glen Stampoultzis wrote: Ritz looks really nice the setup seems complicated. I haven't had much luck setting it up unfortunately. Me neither. Here's the steps I took so far: * Cloned https://github.com/pallet/ritz to a tmp dir * Copied the slime dir inside ritz into my .emacs.d dir * Modified my global cake project.clj file to look as follows: (defproject global 0.0.0 :description Don't rename this project, but you can change the version if you want. :dependencies [[clojure 1.3.0-RC0]] :dev-dependencies [[ritz 0.1.8-SNAPSHOT]]) * Ran `cake deps --global` * My .cake dir now looks as follows: /Users/sam/.cake ├── build ├── classes ├── lib │ ├── clojure-1.3.0-RC0.jar │ ├── deps.clj │ └── dev │ ├── ritz-0.1.8-20110809.143608-3.jar │ └── useful-0.4.0.jar ├── pom.xml ├── project.clj ├── run └── templates └── default ├── LICENSE ├── project.clj ├── src │ └── +project+ │ └── core.clj └── test 10 directories, 9 files * The ritz README talks about making sure tools.clj is in the classpath. However, it appears on OS X there is no tools.jar: tools.jar does not exist. Classes usually located here are instead included in classes.jar. Scripts that rely on the existence of tools.jar need to be rewritten accordingly. (see http://developer.apple.com/library/mac/#documentation/Java/Conceptual/Java14Development/02-JavaDevTools/JavaDevTools.html ) * I created a blank project with `cake new foo` * cd into foo * Ran `cake ritz` to get the error unknown task: ritz. I'm unsure where to go from here. How do I teach cake about the ritz task? Am I missing any specific steps? Is not having tools.jar available on OS X an issue? I'd be very happy to write up a Getting Started tutorial on the ritz wiki if I can get things working. Sam --- http://sam.aaron.name -- 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
How to replace c.c.mock when migrating to Clojure 1.3?
Hello, I'm in the process of porting my code to Clojure 1.3. Those two pages were really helpful on the way: - http://dev.clojure.org/display/doc/Clojure+Contrib - http://dev.clojure.org/display/design/Where+Did+Clojure.Contrib+Go The only dependency I still couldn't get rid of is clojure.contrib.mock. What's the recommended replacement for this library? How is mocking done in Clojure 1.3 at all? In pre 1.3 I could have used binding. But in Clojure 1.3 this doesn't work anymore, because my fn under test is not defined to be dynamic? What's the solution to this problem? Adding ^:dynamic to those fns? Thanks for your help, Roman. -- 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 attach debugger on clojure's repl ?
On Fri, 23 Sep 2011 08:00:36 -0400, Sam Aaron samaa...@gmail.com wrote: On 23 Sep 2011, at 06:14, Glen Stampoultzis wrote: Ritz looks really nice the setup seems complicated. I haven't had much luck setting it up unfortunately. Hopefully we can simplify the process. The setup hasn't been the main priority yet. * Modified my global cake project.clj file to look as follows: I've not actually tried running ritz from cake recently. Which version of cake? (defproject global 0.0.0 :description Don't rename this project, but you can change the version if you want. :dependencies [[clojure 1.3.0-RC0]] :dev-dependencies [[ritz 0.1.8-SNAPSHOT]]) I've also not tried running with 1.3.0-RC0. * The ritz README talks about making sure tools.clj is in the classpath. However, it appears on OS X there is no tools.jar: tools.jar doesn't exist for the mac jdk. I'll add an explicit comment to the readme. * I created a blank project with `cake new foo` * cd into foo * Ran `cake ritz` to get the error unknown task: ritz. I'm unsure where to go from here. How do I teach cake about the ritz task? Am I missing any specific steps? Is not having tools.jar available on OS X an issue? I imagine this is some issue preventing the cake task from loading. I believe cake logs its output somewhere - maybe you could check the cake logs for ritz related messages? I'll try taking a look later today. I'd be very happy to write up a Getting Started tutorial on the ritz wiki if I can get things working. I'll gladly take you up on that :) Hugo -- Hugo Duncan -- 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 attach debugger on clojure's repl ?
On Fri, 23 Sep 2011 08:14:43 -0400, Scott Jaderholm jaderh...@gmail.com wrote: I don't think it looks for tools.jar specifically, it probably just uses the classes in there so as long as they're on the classpath you should be fine. I wouldn't worry about it unless you see an error saying it can't find some classes that googling reveals are in tools.jar. Correct. The README doesn't mention any cake plugins, that's why cake ritz isn't working. There is a cake task. It hasn't seen a lot of use as far as I know, but was working at one point. Cake has however seen a lot of instability recently (from my occasional usage at least). In this case I suspect 1.3 RC0 is causing the task not to load. If cake supports lein plugins then maybe you didn't do lein plugin install ritz 0.1.7. I would recommend 0.1.8-SNAPSHOT. The main difference is in how exceptions are selected for breaking into the debugger, which remains the main sticking point for ritz development at the moment. I'm itching for a clojure.match release so I can use it for this. [1] Perhaps use lein or the maven plugin instead. The maven plugin is zi [2] Hugo [1] https://github.com/pallet/ritz/issues/14 [2] https://github.com/pallet/zi -- Hugo Duncan -- 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 replace c.c.mock when migrating to Clojure 1.3?
Hi, Roman, In 1.3, you can use `with-redefs` to temporarily replace definitions. -Stuart Sierra clojure.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: issues to build clojure-1.3.0-RC0 with JDK-1.7
Hi Jochen, thanks for this report. It looks like the annotations tests are failing due to changes from JDK 1.6 to 1.7. They were brittle tests to begin with and should probably be removed or replaced. This also revealed to me that our JDK test builds on Hudson were not actually building properly. That is now fixed, so we can confirm this issue on Hudson: http://build.clojure.org/view/Clojure/job/clojure-test-matrix/ -Stuart Sierra clojure.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
how to get the correct library????
I downloaded the contrib file that was indicated as the file containing (:use clojure.contrib.duck-streams)) but I get an error when trying to run code. I get errors but don't know what clojure is seeking?? Any advice will be appreciated -- 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 get the correct library????
Hi Jayvandal, clojure.contrib.duck-streams is quite old. Since Clojure 1.2.0, most of the functionality of duck-streams has been packaged with Clojure itself in the clojure.java.io namespace. Please refer to http://dev.clojure.org/display/design/Clojure+Contrib for more information on what Clojure contrib means for different versions of Clojure. Thanks, -Stuart Sierra clojure.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: How to replace c.c.mock when migrating to Clojure 1.3?
Thx Stuart, that worked fine ... -- 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: issues to build clojure-1.3.0-RC0 with JDK-1.7
Hi Jochen, thanks for this report. It looks like the annotations tests are failing due to changes from JDK 1.6 to 1.7. They were brittle tests to begin with and should probably be removed or replaced. This also revealed to me that our JDK test builds on Hudson were not actually building properly. That is now fixed, so we can confirm this issue on Hudson: http://build.clojure.org/view/Clojure/job/clojure-test-matrix/ -Stuart Sierra clojure.com Now fixed on master. Thanks for the report! Stu Stuart Halloway Clojure/core http://clojure.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
lein repl newbie question
I like the lein repl. However, when I try to exit I get this error below. Any ideas? user= (System/exit 0) Exception in thread Thread-3 java.lang.RuntimeException: java.lang.IndexOutOfBoundsException at parsepcap.scrapeindex= (System/exit 0) Exception in thread Thread-3 java.lang.RuntimeException: java.lang.IndexOutOfBoundsException at clojure.lang.AFn.run(AFn.java:28) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.IndexOutOfBoundsException at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:102) at java.io.OutputStreamWriter.write(OutputStreamWriter.java:190) at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:90) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at leiningen.repl$copy_out_loop.invoke(repl.clj:87) at leiningen.repl$repl_client$fn__2971.invoke(repl.clj:93) at clojure.lang.AFn.run(AFn.java:24) ... 1 more -- 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 attach debugger on clojure's repl ?
On 23 Sep 2011, at 14:24, Hugo Duncan wrote: I've not actually tried running ritz from cake recently. Which version of cake? 0.6.3 I've also not tried running with 1.3.0-RC0. I get the same issue (unknown task: ritz) with Clojure 1.2.0 I imagine this is some issue preventing the cake task from loading. I believe cake logs its output somewhere - maybe you could check the cake logs for ritz related messages? Both the local .cake/cake.log and the global ~/.cake/.cake/cake.log logs don't report anything from ritz when attempting to run `cake ritz`. I'd be very happy to write up a Getting Started tutorial on the ritz wiki if I can get things working. I'll gladly take you up on that :) It would be a pleasure :-) Sam --- http://sam.aaron.name -- 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
Something missing from the clojure compiler's java annotation support for gen-class and defrecord? Am I driving while bouncing off the guard rails?
Ideally when generating a java class from Clojure for interop
purposes, we should be able to generate any annotations that the
equivalent java code could generate. Thus if a java class can
annotate a constructor parameter, then gen-class and defrecord should
be able to do that too. (I'm trying to interoperate with some Spring
Framework stuff that expects to inject stuff into my class via an
annotated constructor parameter. I'm trying to gradually introduce
clojure code into the project starting with this one class that has
that requirement. Maybe that's not a good idea to begin with, but I
always find it very tempting. It's probably a case of driving while
bouncing off the guard rails. :))
Did I put my constructor annotation in the wrong place in my example
below? I also tried putting directly on the parameter of the -init
function. If this is truly missing functionality, I may try to level
up enough to patch the clojure compiler, send in a CA, submit a pull
request... But I think I have a ways to go to level up my clojure to
that level.
Many thanks in advance for any insights/feedback from the wonderful
clojure community.
(ns com.warrenthomaswood.MyGenClass
(:gen-class :methods [[foo [^{Deprecated true} String] void]]
:init init
:constructors {[^{Deprecated true} String] []}))
(defn -init [word] (println word))
(defn -foo [this word] (println word))
;;; given the above clojure-generated class MyGenClass, and a plain
java class MyClass with a
;;; constructor parameter annotation as follows:
package com.warrenthomaswood;
public class MyClass { public MyClass(@Deprecated String s) { } }
;;; when I try to retrieve the annotations in a JUnit test, I can
retrieve the method parameter
;;; annotation from the clojure generated class using
MyGenClass.class.getMethods() and then calling
;;; getAnnotations() on the method.
;;; I can retrieve the constructor parameter annotation from the java
generated class using
;;; MyClass.class.getConstructors() and then calling getAnnotations on
the constructor
;;; but the clojure compiler does not seem to have a way of getting
the constructor parameter
;;; annotation into the byte code. I can get annotations on the whole
constructor I think, but
;;; not on the individual parameters of the construct.
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Re: lein repl newbie question
Have you tried control+d? -- 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
:use :only support in ClojureScript now available
A lot people have been clamoring for this. This has been merged into master. (:use [foo.bar :only [...]]) (:use-macros [foo.bar :only [...]]) Are now both supported! Thanks to all that helped out! Cheers, David -- 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
aquamacs, slime and clojure on OS X
Sorry to raise something that has probably been asked and answered umpteen times. I have been looking forward to trying clojure for quite some time. I appreciate that clojure and its ecosystem is undergoing rapid development. However, I have spent the last day and a half trying to get either aquamacs or gnu emacs working with slime and clojure, with no success. BTW, I have used aquamacs with slime and Common Lisp (ccl, sbcl) for a long time now. I know those are older, more stable languages, but good golly - I had aquamacs+slime+ccl set up in about an hour. Is their a reliable set of instructions to set up slime with clojure somewhere? I have followed instructions from a half dozen different web pages. They are rich in magic incantations which fail (possibly because I'm dense). I *think *I followed the instructions on the Getting Started with Emacs page linked to from the clojure site, but - it did not work. Perhaps my attitude is wrong, but the user comments on the Getting Started page basically demolished my confidence in the information there. I won't post error messages yet, although it may come to that shortly. I would prefer to use aquamacs, but would settle for GNU Emacs. What I want to start with is the simplest set of things that will give me a clojure REPL in aquamacs/emacs. In the absence of reliable installation instructions (or perhaps even preferable to them), is there a description somewhere of the final target state that my system should be in? That is, I actually do NOT *really* want to use any of the following, unless absolutely required: - an Emacs Starter Kit - a development version of GNU Emacs, i.e. v.24 - any kind of package manager for Emacs - any kind of project build system for clojure, i.e. leiningen All of the above appear to me to be well-intended help, any or all of which have broken on me as I tried this. Instead I would prefer to know what files I need in what locations. But then, who am I to boss y'all around on how to help me ;-) My setup: - Snow Leopard 10.6.8 - aquamacs 2.3a - GNU Emacs 24 - clojure and clojure-contrib from macports, whatever their latest is - Slime-related jar files and elisp files littered all over the place that didn't do me any good TIA. - Jake - -- 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
Why visible in-transaction changes?
Hi, I really like the idea of grouping mutation in my programs into transactions in order to reduce the number of possible states make make reasoning about them easier (in the spirit of the mutable state discussion of [1]) and thought that Clojure's dosync + refs might be the ideal way to do this. However, I was disappointed to find out the following: (def r (ref 1)) (dosync (alter r #(+ 1 %)) (println @r)) (println @r) Output: 2 2 I would have hoped that changes to refs during an transaction wouldn't affect the in-transaction value of the ref (that is, I would have liked the code to print 1, then 2). This way, the view of the program's state would always be guaranteed to be consistent, even during a transaction, and there would be no fear of non-consistent in- transaction states breaking anything. The way it is currently work in Clojure, though, still requires one to take all such inconsistent states into account, rendering them effectively useless for the kind of state management I imagined. (Note that I am not talking about multi-threading here; my objective is to reduce the number of possible states in the single-threaded case, and make sure that every computation is based upon a consistent state.) Why was this behavior chosen, instead of only making changes to refs invisible until commited (even to the transaction commiting them)? I believe that the latter approach would actually fit better to Clojure in general. Maybe there could at least be an alternative dosync form that acts like this? Regards, Denis -- 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: Why visible in-transaction changes?
I would have hoped that changes to refs during an transaction wouldn't affect the in-transaction value of the ref (that is, I would have liked the code to print 1, then 2). This way, the view of the program's state would always be guaranteed to be consistent, even during a transaction, and there would be no fear of non-consistent in- transaction states breaking anything. The way it is currently work in Clojure, though, still requires one to take all such inconsistent states into account, rendering them effectively useless for the kind of state management I imagined. (Note that I am not talking about multi-threading here; my objective is to reduce the number of possible states in the single-threaded case, and make sure that every computation is based upon a consistent state.) Why was this behavior chosen, instead of only making changes to refs invisible until commited (even to the transaction commiting them)? I believe that the latter approach would actually fit better to Clojure in general. Maybe there could at least be an alternative dosync form that acts like this? Regards, Denis There are a lot of scenarios that would become difficult or impossible with the semantics you propose. On the other hand, what you want is quite simple to achieve: If you want consistent view of the the values of refs, deref them all at the start of the transaction. Stu Stuart Halloway Clojure/core http://clojure.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: aquamacs, slime and clojure on OS X
Intentionally avoiding leiningen on ideological grounds will make things more difficult and frustrating for yourself. If you do want to try it out, there are links below to get you started below. You can realistically be up and running with emacs and slime in less than an hour. lein: https://github.com/technomancy/leiningen lein tutorial: https://github.com/technomancy/leiningen/blob/1.x/doc/TUTORIAL.md swank-clojure: https://github.com/technomancy/swank-clojure On Thu, Sep 22, 2011 at 8:46 PM, Jake Penton jakepen...@gmail.com wrote: Sorry to raise something that has probably been asked and answered umpteen times. I have been looking forward to trying clojure for quite some time. I appreciate that clojure and its ecosystem is undergoing rapid development. However, I have spent the last day and a half trying to get either aquamacs or gnu emacs working with slime and clojure, with no success. BTW, I have used aquamacs with slime and Common Lisp (ccl, sbcl) for a long time now. I know those are older, more stable languages, but good golly - I had aquamacs+slime+ccl set up in about an hour. Is their a reliable set of instructions to set up slime with clojure somewhere? I have followed instructions from a half dozen different web pages. They are rich in magic incantations which fail (possibly because I'm dense). I think I followed the instructions on the Getting Started with Emacs page linked to from the clojure site, but - it did not work. Perhaps my attitude is wrong, but the user comments on the Getting Started page basically demolished my confidence in the information there. I won't post error messages yet, although it may come to that shortly. I would prefer to use aquamacs, but would settle for GNU Emacs. What I want to start with is the simplest set of things that will give me a clojure REPL in aquamacs/emacs. In the absence of reliable installation instructions (or perhaps even preferable to them), is there a description somewhere of the final target state that my system should be in? That is, I actually do NOT really want to use any of the following, unless absolutely required: an Emacs Starter Kit a development version of GNU Emacs, i.e. v.24 any kind of package manager for Emacs any kind of project build system for clojure, i.e. leiningen All of the above appear to me to be well-intended help, any or all of which have broken on me as I tried this. Instead I would prefer to know what files I need in what locations. But then, who am I to boss y'all around on how to help me ;-) My setup: Snow Leopard 10.6.8 aquamacs 2.3a GNU Emacs 24 clojure and clojure-contrib from macports, whatever their latest is Slime-related jar files and elisp files littered all over the place that didn't do me any good TIA. - Jake - -- 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: Partitioning problem
On Fri, Sep 23, 2011 at 7:51 AM, Michael Jaaka michael.ja...@googlemail.com wrote: Hi! I have a sequence of natural numbers and I have to partition them into more or less equals N groups. Partitioning function is just a sum of numbers in a given group. My naive solution is to sort numbers descending then take each number and put into one of N groups in which sum of its elements with given number is the lowest. Here is the code: http://pastebin.com/Nw28FaRK So for input [ 1 2 34 54 12 23 5 2 3 1 2 12 11 12 32 67 ] and N = 5 I get ([32 12 5 1 1] [34 12 2 2] [23 12 11 3 2] [54] [67]) Do you know any better solution? Seems like a good algorithm. Here's another implementation: (defn partition-into [f n coll] (map peek (reduce (fn [buckets x] (let [b (first buckets), b2 (conj (b 2) x)] (conj (disj buckets b) [(apply f b2) (b 1) b2]))) (apply sorted-set (for [i (range n)] [0 i []])) (reverse (sort coll) This only computes the sum once each time a partition is added to (instead of multiple times during the sort), and because it's using a sorted set only has to compare the sum to log(n) other buckets each time instead of doing an n*log(n) sort-by. --Chouser -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Revelytix hiring Clojure developers
Revelytix [1] is hiring Clojure developers for full-time, direct employment in St. Louis, Missouri and Baltimore, Maryland USA. We are a relatively small team of developers building semantic technology based, data integration products. We understand that applicants may not have deep Clojure or semantic technology experience, but this is a great place to get it! If you are interested, email a note and your resume to careers _at_ revelytix.com. [1] http://revelytix.com/ Thanks. -David McNeil -- 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: Partitioning problem
Good stuff! Thanks! Especially the trick with indexing so the set accepts first state of buckets. Beside this you are ignoring the current candidate computation along rest and just put him into nearest bucket. In mine I'm first looking for the potentially the best and finally put him over there. But in general yours looks better is also correct and of course is less computing expensive and as output gives already sorted buckets. First sort can be (sort-by f coll) instead (sort coll) -- 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: aquamacs, slime and clojure on OS X
On Thu, Sep 22, 2011 at 5:46 PM, Jake Penton jakepen...@gmail.com wrote: In the absence of reliable installation instructions (or perhaps even preferable to them), is there a description somewhere of the final target state that my system should be in? That is, I actually do NOT really want to use any of the following, unless absolutely required: an Emacs Starter Kit a development version of GNU Emacs, i.e. v.24 any kind of package manager for Emacs any kind of project build system for clojure, i.e. leiningen It's not really feasible to have a slime setup that's compatible with both CL and Clojure without using Leiningen. The path of least resistance is shown in the swank-clojure readme. The tl;dr version follows: * install Leiningen * install the swank-clojure plugin: lein plugin install swank-clojure 1.3.2 * install clojure-mode (you can do this from git) * navigate to a project and do M-x clojure-jack-in That's all it takes. It might work with Aquamacs, but since that fork is not portable it's impossible for me to test on it. So GNU Emacs is recommended. If you absolutely cannot use Leiningen then you will have to manually juggle between the CL-compatible versions of slime packages and the Clojure-compatible ones, which from what I've heard from CL users sounds like a nightmare. (This is due to the fact that the Slime developers only target CL and refuse to make stable releases.) If you only need Clojure support then it's a little easier to get along without Leiningen, but it's still a pain in the neck. But the swank-clojure readme does explain embedding swank in your own application. You just need to manually load the slime elisp files from the swank-clojure git repository. -Phil -- 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: Recursion/Algorithm Question
Thanks, That (along with returning the completed path via (list)) nailed it. I thought I'd tried concat at some point, but that might have been with another problem I've been tackling. -- 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: Partitioning problem
In the general case this is an NP-complete problem (ie, no algorithm you can write will be good enough), but many simpler cases can be solved quickly by some heuristic or other. See http://en.wikipedia.org/wiki/Partition_problem#Methods for some examples. On Sep 23, 4:51 am, Michael Jaaka michael.ja...@googlemail.com wrote: Hi! I have a sequence of natural numbers and I have to partition them into more or less equals N groups. Partitioning function is just a sum of numbers in a given group. My naive solution is to sort numbers descending then take each number and put into one of N groups in which sum of its elements with given number is the lowest. Here is the code:http://pastebin.com/Nw28FaRK So for input [ 1 2 34 54 12 23 5 2 3 1 2 12 11 12 32 67 ] and N = 5 I get ([32 12 5 1 1] [34 12 2 2] [23 12 11 3 2] [54] [67]) Do you know any better solution? -- 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: aquamacs, slime and clojure on OS X
* install Leiningen * install the swank-clojure plugin: lein plugin install swank-clojure 1.3.2 * install clojure-mode (you can do this from git) * navigate to a project and do M-x clojure-jack-in That's all it takes. It might work with Aquamacs, but since that fork is not portable it's impossible for me to test on it. So GNU Emacs is recommended. For what it's worth, I use this setup with Aquamacs and everything works perfectly. Justin -- 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: Something missing from the clojure compiler's java annotation support for gen-class and defrecord? Am I driving while bouncing off the guard rails?
Hi Warren, Clojure doesn't try to be support every possible feature of Java when generating Java classes, it just provides enough for interop purposes. Annotations have always been a weak area. I don't know if annotations on constructor arguments in `gen-class` are supported, but my suspicion is they are not. A patch would be possible - the `gen-class` code is written mostly in Clojure. But the easier solution for now would be to write a small class in Java and `:extend` it in your gen-class. -Stuart Sierra clojure.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: Something missing from the clojure compiler's java annotation support for gen-class and defrecord? Am I driving while bouncing off the guard rails?
Excellent, thanks! And thanks for sharing the taxi from Strange Loop to STL tuesday night! :) On Sep 23, 2:07 pm, Stuart Sierra the.stuart.sie...@gmail.com wrote: Hi Warren, Clojure doesn't try to be support every possible feature of Java when generating Java classes, it just provides enough for interop purposes. Annotations have always been a weak area. I don't know if annotations on constructor arguments in `gen-class` are supported, but my suspicion is they are not. A patch would be possible - the `gen-class` code is written mostly in Clojure. But the easier solution for now would be to write a small class in Java and `:extend` it in your gen-class. -Stuart Sierra clojure.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: Why visible in-transaction changes?
Am 23.09.2011 17:25, schrieb Stuart Halloway: I would have hoped that changes to refs during an transaction wouldn't affect the in-transaction value of the ref (that is, I would have liked the code to print 1, then 2). This way, the view of the program's state would always be guaranteed to be consistent, even during a transaction, and there would be no fear of non-consistent in- transaction states breaking anything. The way it is currently work in Clojure, though, still requires one to take all such inconsistent states into account, rendering them effectively useless for the kind of state management I imagined. (Note that I am not talking about multi-threading here; my objective is to reduce the number of possible states in the single-threaded case, and make sure that every computation is based upon a consistent state.) Why was this behavior chosen, instead of only making changes to refs invisible until commited (even to the transaction commiting them)? I believe that the latter approach would actually fit better to Clojure in general. Maybe there could at least be an alternative dosync form that acts like this? Regards, Denis There are a lot of scenarios that would become difficult or impossible with the semantics you propose. Do you have an example? On the other hand, what you want is quite simple to achieve: If you want consistent view of the the values of refs, deref them all at the start of the transaction. Fair enough, but if a transaction is split among several functions, this becomes difficult. Regards, Denis -- 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: ClojureScript: Problem getting Browser Repl Env to Work
No unfortunately not, with neither FF nor Chrome, and using the
Javascript Debuggers of both ...
On Sep 21, 10:27 pm, David Nolen dnolen.li...@gmail.com wrote:
Do you get any JS errors from the browser at the JS console?
David
On Wed, Sep 21, 2011 at 4:23 PM, Volker Schlecht
volker.schle...@gmail.comwrote:
Hi,
no, I've tried it against - essentially - a manual replication of the
built-in sample. But thanks for the hint, because the sample does
work, but so far I haven't figured out the deciding difference ... at
least I have a reference now to compare against.
Thanks!
Volker
On Sep 21, 7:26 pm, David Nolen dnolen.li...@gmail.com wrote:
Hmm in my experience
1. Start the Browser REPL
2. Open your project's main html file (index.html)
And you're good to go. Sometimes you need to refresh the browser but
that's
about it as far as I can tell.
Are you trying this against the built in sample?
David
On Tue, Sep 20, 2011 at 4:32 PM, Volker Schlecht
volker.schle...@gmail.comwrote:
Hi everybody,
I'm trying out the new browser repl-environment using both the
tutorial (https://github.com/clojure/clojurescript/wiki/The-REPL-and-
Evaluation-Environments) but so far am unable to get it to work.
Using current (as of the writing of this mail) master from github, and
following the Steps in the tutorial:
1. Starting up the repl works, leads me straight to the repl (i.e.
allows me to enter an expression). I remember trying a previous
version of the in-browser repl which worked for me, but in which i
couldn't enter anything before the browser initiated a connection. The
docs mention a wait for a browser connection being neccesary here ...
2. Setting up the XPC communication works, i.e. I see the initial GET
request receiving sensible-looking javascript, and I see a POST of
ready being answered by a goog.provide('user').
3. That's it however - connection closed. Non-surprisingly, entering
any expression only hangs the REPL.
Using curl as per browser.clj:
1. Startting REPL works, as above
2. curl -v -d readyhttp://localhost:9000/respondswith
HTTP/1.1 200 OK
Server: ClojureScript REPL
Content-Type: text/javascript; charset=utf-8
Content-Length: 26
* Connection #0 to host localhost left intact
* Closing connection #0
goog.provide('cljs.user');
3. Looking not too bad except for the closed connection, so entering
(+ 1 1) hangs the REPL
4. curl -v -d 2http://127.0.0.1:9000thenresponds with the
compiled javascript as far as I can tell:
HTTP/1.1 200 OK
Server: ClojureScript REPL
Content-Type: text/javascript; charset=utf-8
Content-Length: 61
cljs.core.pr_str.call(null,cljs.core._PLUS_.call(null,1,1));
* Connection #0 to host localhost left intact
* Closing connection #0
To me it seems that something is awry with keeping that connection
really open on my system.
I'm on Debian SID and tried with firefox 6 and 7-beta as well as with
google-chrome. JDK is Oracle Java 1,6.0_26-b03, ClojureScript is as
stated above a vanilla copy of current master, freshly bootstrapped.
Reverting to select previous states of ClojureScript (i.e. right after
clojure.browser was merged into master, and right before) yielded no
better results, except that those didn't get me to a REPL prompt at
all and were stuck at Server started The last and only time I
had that working was with the clojure.browser branch from some time
around August 26th.
What am I doing wrong? Any hints?
regards,
Volker
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Re: ClojureScript: Problem getting Browser Repl Env to Work
Are you getting any missing resources errors?
On Fri, Sep 23, 2011 at 4:03 PM, Volker Schlecht
volker.schle...@gmail.comwrote:
No unfortunately not, with neither FF nor Chrome, and using the
Javascript Debuggers of both ...
On Sep 21, 10:27 pm, David Nolen dnolen.li...@gmail.com wrote:
Do you get any JS errors from the browser at the JS console?
David
On Wed, Sep 21, 2011 at 4:23 PM, Volker Schlecht
volker.schle...@gmail.comwrote:
Hi,
no, I've tried it against - essentially - a manual replication of the
built-in sample. But thanks for the hint, because the sample does
work, but so far I haven't figured out the deciding difference ... at
least I have a reference now to compare against.
Thanks!
Volker
On Sep 21, 7:26 pm, David Nolen dnolen.li...@gmail.com wrote:
Hmm in my experience
1. Start the Browser REPL
2. Open your project's main html file (index.html)
And you're good to go. Sometimes you need to refresh the browser but
that's
about it as far as I can tell.
Are you trying this against the built in sample?
David
On Tue, Sep 20, 2011 at 4:32 PM, Volker Schlecht
volker.schle...@gmail.comwrote:
Hi everybody,
I'm trying out the new browser repl-environment using both the
tutorial (
https://github.com/clojure/clojurescript/wiki/The-REPL-and-
Evaluation-Environments) but so far am unable to get it to work.
Using current (as of the writing of this mail) master from github,
and
following the Steps in the tutorial:
1. Starting up the repl works, leads me straight to the repl (i.e.
allows me to enter an expression). I remember trying a previous
version of the in-browser repl which worked for me, but in which i
couldn't enter anything before the browser initiated a connection.
The
docs mention a wait for a browser connection being neccesary here
...
2. Setting up the XPC communication works, i.e. I see the initial
GET
request receiving sensible-looking javascript, and I see a POST of
ready being answered by a goog.provide('user').
3. That's it however - connection closed. Non-surprisingly,
entering
any expression only hangs the REPL.
Using curl as per browser.clj:
1. Startting REPL works, as above
2. curl -v -d readyhttp://localhost:9000/respondswith
HTTP/1.1 200 OK
Server: ClojureScript REPL
Content-Type: text/javascript; charset=utf-8
Content-Length: 26
* Connection #0 to host localhost left intact
* Closing connection #0
goog.provide('cljs.user');
3. Looking not too bad except for the closed connection, so
entering
(+ 1 1) hangs the REPL
4. curl -v -d 2http://127.0.0.1:9000thenresponds with the
compiled javascript as far as I can tell:
HTTP/1.1 200 OK
Server: ClojureScript REPL
Content-Type: text/javascript; charset=utf-8
Content-Length: 61
cljs.core.pr_str.call(null,cljs.core._PLUS_.call(null,1,1));
* Connection #0 to host localhost left intact
* Closing connection #0
To me it seems that something is awry with keeping that connection
really open on my system.
I'm on Debian SID and tried with firefox 6 and 7-beta as well as
with
google-chrome. JDK is Oracle Java 1,6.0_26-b03, ClojureScript is as
stated above a vanilla copy of current master, freshly
bootstrapped.
Reverting to select previous states of ClojureScript (i.e. right
after
clojure.browser was merged into master, and right before) yielded
no
better results, except that those didn't get me to a REPL prompt at
all and were stuck at Server started The last and only time I
had that working was with the clojure.browser branch from some time
around August 26th.
What am I doing wrong? Any hints?
regards,
Volker
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Re: Re: lein repl newbie question
well, I was doing control+c which works too. How is control+d different? On , Islon Scherer islonsche...@gmail.com wrote: Have you tried control+d? -- 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: Re: lein repl newbie question
control+d exits clojure repl -- 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: Re: lein repl newbie question
labwor...@gmail.com wrote: well, I was doing control+c which works too. How is control+d different? On , Islon Scherer islonsche...@gmail.com wrote: Have you tried control+d? -- 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 ctrl-c sends a SIGINT while ctrl-d sends an EOF -- 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: Something missing from the clojure compiler's java annotation support for gen-class and defrecord? Am I driving while bouncing off the guard rails?
Deftype handles annotations and all the other features of java classes. Have a look here for an example: http://translate.google.com/translate?sl=autotl=enjs=nprev=_thl=enie=UTF-8layout=2eotf=1u=http%3A%2F%2Fmy-clojure.blogspot.com%2F2011%2F06%2Fweb-clojure.html On Sep 23, 10:11 pm, Warren Wood warrenthomasw...@yahoo.com wrote: Excellent, thanks! And thanks for sharing the taxi from Strange Loop to STL tuesday night! :) On Sep 23, 2:07 pm, Stuart Sierra the.stuart.sie...@gmail.com wrote: Hi Warren, Clojure doesn't try to be support every possible feature of Java when generating Java classes, it just provides enough for interop purposes. Annotations have always been a weak area. I don't know if annotations on constructor arguments in `gen-class` are supported, but my suspicion is they are not. A patch would be possible - the `gen-class` code is written mostly in Clojure. But the easier solution for now would be to write a small class in Java and `:extend` it in your gen-class. -Stuart Sierra clojure.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: issues to build clojure-1.3.0-RC0 with JDK-1.7
Am 23.09.11 16:41, schrieb Stuart Halloway: Hi Jochen, thanks for this report. It looks like the annotations tests are failing due to changes from JDK 1.6 to 1.7. They were brittle tests to begin with and should probably be removed or replaced. This also revealed to me that our JDK test builds on Hudson were not actually building properly. That is now fixed, so we can confirm this issue on Hudson: http://build.clojure.org/view/Clojure/job/clojure-test-matrix/ -Stuart Sierra clojure.com http://clojure.com Now fixed on master. Thanks for the report! Can you tell me the exact commit number, so I can apply the patch to the Fedora package. Best Regards: Jochen Schmitt -- 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: issues to build clojure-1.3.0-RC0 with JDK-1.7
Hi Jochen, thanks for this report. It looks like the annotations tests are failing due to changes from JDK 1.6 to 1.7. They were brittle tests to begin with and should probably be removed or replaced. This also revealed to me that our JDK test builds on Hudson were not actually building properly. That is now fixed, so we can confirm this issue on Hudson: http://build.clojure.org/view/Clojure/job/clojure-test-matrix/ -Stuart Sierra clojure.com Now fixed on master. Thanks for the report! Can you tell me the exact commit number, so I can apply the patch to the Fedora package. Best Regards: Jochen Schmitt The SHA for that commit is fcc3d799cc33c920720fa512b18901e2f2a81dda . But you might want to leapfrog that and just grab the clojure-1.3.0 tag. :-) Stu Stuart Halloway Clojure/core http://clojure.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
[ANN] Clojure 1.3 Released
We are pleased to announce today the release of Clojure 1.3: http://clojure.org/downloads For maven/leiningen users, your settings are now: :dependencies [[org.clojure/clojure 1.3.0]] This release includes many significant features and performance enhancements, documented here: https://github.com/clojure/clojure/blob/1.3.x/changes.txt The number of Clojure contributors continues to grow. Thanks to all the people whose code is included in this release: Aaron Bedra Alan Dipert Alex Miller Alex Ott Alex Redington Alexander Taggart Allen Rohner Ben Smith-Mannschott Benjamin Teuber Brian Hurt Chas Emerick Chouser Christophe Grand Christopher Redinger Colin Jones Cosmin Stejerean Daniel Solano Gómez David Miller David Powell David Rupp Fogus George Jahad Jason Wolfe Juha Arpiainen Justin Balthrop Kevin Downey Luke VanderHart Meikel Brandmeyer Michał Marczyk Mike Hinchey Nicolas Buduroi Paul Michael Bauer Paul Stadig Phil Hagelberg Rasmus Svensson Rich Hickey Robert Lachlan Stephen C. Gilardi Stuart Halloway Stuart Sierra Timothy Pratley Tom Faulhaber Thanks to all involved! Chris Clojure/core -- 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: Addition of new a priori distinct element to a vector
On Sep 23, 2:20 am, Kevin Livingston kevinlivingston.pub...@gmail.com wrote: what's the actual use case where you want this? it seems pretty weird just on it's own. it may in practice be more clever than other solutions, but that's not clear yet. if you just want a unique symbol there's (gensym) For the sake of illustration, this function will chunk a vector into vectors of identical elements, in order (no assurance that it won't be weird in context): (defn grp [s] (- (reduce (fn [[v chunk] elt] (if (or (empty? chunk) (= elt (first chunk))) [v (conj chunk elt)] [(conj v chunk) [elt]])) [[][]] (conj s s)) (first))) user (grp []) [] user (grp [1 2 3 2 2 3]) [[1] [2] [3] [2 2] [3]] user (grp [1 1 4 4 4]) [[1 1] [4 4 4]] user regarding vectors, I found this a helpful read a while back, it's a few years old, but I think it's still accurate, and may help you get a picture of what's under the hood.http://blog.higher-order.net/2009/02/01/understanding-clojures-persis... Kevin That's helpful, thank you. -- 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: Addition of new a priori distinct element to a vector
On Sep 23, 3:02 pm, F Lengyel florian.leng...@gmail.com wrote: On Sep 23, 2:20 am, Kevin Livingston kevinlivingston.pub...@gmail.com wrote: what's the actual use case where you want this? it seems pretty weird just on it's own. it may in practice be more clever than other solutions, but that's not clear yet. if you just want a unique symbol there's (gensym) For the sake of illustration, this function will chunk a vector into vectors of identical elements, in order (no assurance that it won't be weird in context): (defn grp [s] (- (reduce (fn [[v chunk] elt] (if (or (empty? chunk) (= elt (first chunk))) [v (conj chunk elt)] [(conj v chunk) [elt]])) [[][]] (conj s s)) (first))) (partition-by identity s) is simpler unless you have some very compelling reason to need vectors? user (grp []) [] user (grp [1 2 3 2 2 3]) [[1] [2] [3] [2 2] [3]] user (grp [1 1 4 4 4]) [[1 1] [4 4 4]] user regarding vectors, I found this a helpful read a while back, it's a few years old, but I think it's still accurate, and may help you get a picture of what's under the hood.http://blog.higher-order.net/2009/02/01/understanding-clojures-persis... Kevin That's helpful, thank you. -- 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: aquamacs, slime and clojure on OS X
use this script to download everything you need for clojure development on emacs (aquamacs) git clone https://github.com/technomancy/clojure-mode.git wget -P framemove http://www.emacswiki.org/emacs/download/framemove.el wget -P paredit http://mumble.net/~campbell/emacs/paredit.el wget --no-check-certificate https://github.com/downloads/magit/magit/magit-1.0.0.tar.gz mkdir magit tar --strip-components=1 --directory=magit -xzf magit-1.0.0.tar.gz wget http://download.savannah.gnu.org/releases/color-theme/color-theme-6.6.0.tar.gz mkdir color-theme tar --strip-components=1 --directory=color-theme -xzf color- theme-6.6.0.tar.gz my init.el: ;; clojure-mode (add-to-list 'load-path ~/.emacs.d/clojure-mode) (require 'clojure-mode) ;; paredit (add-to-list 'load-path ~/.emacs.d/paredit) (require 'paredit) ;; color theme (add-to-list 'load-path ~/.emacs.d/color-theme) (require 'color-theme) (eval-after-load color-theme '(progn (color-theme-initialize))) ; windmove and framemove (add-to-list 'load-path ~/.emacs.d/framemove) (require 'framemove) (windmove-default-keybindings) (setq framemove-hook-into-windmove t) ;; customizations (menu-bar-mode -1) (show-paren-mode t) (if (boundp 'tool-bar-mode) (tool-bar-mode -1)) (if (boundp 'scroll-bar-mode) (scroll-bar-mode -1)) ;; color profiles (defun color-dark () (interactive) (global-hl-line-mode 1) (color-theme-deep-blue) (set-face-foreground 'minibuffer-prompt #9df0f6) (set-face-background 'hl-line #203e5e)) ;; shell fix (autoload 'ansi-color-for-comint-mode-on ansi-color nil t) (add-hook 'shell-mode-hook 'ansi-color-for-comint-mode-on) -- 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: Why visible in-transaction changes?
Hi, On Friday, September 23, 2011 5:25:34 PM UTC+2, stuart@gmail.com wrote: I would have hoped that changes to refs during an transaction wouldn't affect the in-transaction value of the ref you usually don't want that. When you start working on more than one value in a transaction (and that's the point -- otherwise you'd use an atom) you will most probably want to use the in-transaction value like a common state-changing variable. It just feels more natural. Imagine a genetic algorithm which creates new individuals and calculates their fitness in parallel. After one thread created a new indiv and computed the fitness it will want to save that indiv to The Population. However, there may be a monitor in place that also updates the list of the best 10 indivs in the population just within the same transaction. This might want to sort the new Population, including the new indiv, and return the best 10. Ah, words fail me... I think, my main point is: start using more than one Ref in a coordinated manner, because that's what they are for. Maybe you'll see. (And, of course, maybe you'll stick with your view ;-). (that is, I would have liked the code to print 1, then 2). This way, the view of the program's state would always be guaranteed to be consistent, But you are creating a new consistent state in minor steps that you, in your code, know how to control, and that you want to be atomic *from the outside*. STM ensures that the changing of as many Refs as you need will appear atomic from outside the transaction. even during a transaction, and there would be no fear of non-consistent in- transaction states breaking anything. The way it is currently work in Clojure, though, still requires one to take all such inconsistent states into account, rendering them effectively useless for the kind of state management I imagined. I'd be interested in reading, what you want to achieve. (Note that I am not talking about multi-threading here; my objective is to reduce the number of possible states in the single-threaded case, and make sure that every computation is based upon a consistent state.) Huh? It is probably too late in my time-zone to fully understand, what you'd like to do. But why would you want to use a technology that was made to deal with state changes from different threads for guarding a single-threaded application? Kind regards, Stefan -- 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: aquamacs, slime and clojure on OS X
+1 here. These instructions have worked for me with Aquamacs. On Sep 23, 2011, at 2:46 PM, Justin Kramer wrote: * install Leiningen * install the swank-clojure plugin: lein plugin install swank-clojure 1.3.2 * install clojure-mode (you can do this from git) * navigate to a project and do M-x clojure-jack-in That's all it takes. It might work with Aquamacs, but since that fork is not portable it's impossible for me to test on it. So GNU Emacs is recommended. For what it's worth, I use this setup with Aquamacs and everything works perfectly. Justin -- 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: trace-forms macro
Hi Jonathan, I am moving the trace contrib stuff to 1.3. I would like to include your trace-forms macro in it. Feeling ok with this ? Comments ? The issues you underlined are not runtime errors, they are compilation errors. There's not much you can do to trap these. The macro is still valuable for runtime tracing. Luc P. On Mon, 12 Sep 2011 11:31:39 +0200 Jonathan Fischer Friberg odysso...@gmail.com wrote: Hello, I made a small macro, if anyone is interested. https://gist.github.com/1209498 It wraps one or more forms and if an exception is thrown, prints the form that caused it, and throws the exception itself. Examples: user= (trace-forms 3) 3 user= (trace-forms (+ 6 (/ 9 0))) java.lang.ArithmeticException: Divide by zero (NO_SOURCE_FILE:9) Form failed: (/ 9 0) Form failed: (+ 6 (/ 9 0)) user= (trace-forms (let [a 0 b (/ 9 a)] b)) java.lang.ArithmeticException: Divide by zero (NO_SOURCE_FILE:75) Form failed: (/ 9 a) Form failed: (let* [a 0 b (/ 9 a)] b) Form failed: (let [a 0 b (/ 9 a)] b) Issues: user= (trace-forms (let [b (/ 9 a)] b)) java.lang.Exception: Unable to resolve symbol: a in this context (NO_SOURCE_FILE:94) user= (trace-forms (let [a (java.lang.DoesNotExist.)] a)) java.lang.ClassNotFoundException: java.lang.DoesNotExist (NO_SOURCE_FILE:93) Thoughts? Jonathan -- Luc P. The rabid Muppet -- 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
