Re: question about clojure.lang.LazySeq.toString()
If I'm reading everything correctly: 1. Object 's .toString uses .hashCode() 2. LazySeq 's .hashCode() uses seq() which realizes a seq. 3. LazySeq 's .hashCode() calls .hashCode() on the realized seq 3. (map ..) creates a LazySeq with a fn to create (cons val (lazy-seq (map f rest))) 4. (cons ... ...) creates a Cons 5. Cons uses Aseq's .hashcode() which traverses each object in the seq and merges the hashcodes together. A similar thing happens with a (range) as it builds a ChunkedCons which also uses Aseq's hashcode. On Fri, Mar 22, 2013 at 12:53 AM, Marko Topolnik marko.topol...@gmail.com wrote: I am deeply puzzled abouth the behavior of .toString invocation on a lazy sequence. == (.getClass (map println (range 100))) clojure.lang.LazySeq == (.toString (map println (range 100))) ;; integers 0..100 printed clojure.lang.LazySeq@590b4b81 It should be obvious from the output, but for the record: LazySeq doesn't override toString, so just the basic Java method is called. How can this possibly cause the sequence to be realized? Beyond my curiosity, however, what possible purpose could such behavior serve? -marko On Thursday, March 21, 2013 7:54:39 PM UTC+1, Razvan Rotaru wrote: Hi, I'm curious, why doesn't toString of clojure.lang.LazySeq return the entire sequence as a String, and returns the Java pointer instead? I find it annoying when I do this: user (str (map + [1 2 3])) clojure.lang.LazySeq@7861 What's the reason behind this decision? Shouldn't toString trigger the evaluation of the sequence? Doesn't it do that for other values, like numbers and vectors? Is there an alternative to the code above (preferably simple and elegant), which will return the etire sequence? Thanks, Răzvan -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: question about clojure.lang.LazySeq.toString()
Found a post on clojure-dev about this https://groups.google.com/forum/?fromgroups=#!topic/clojure-dev/F68GRPrbfWo On Fri, Mar 22, 2013 at 1:29 AM, Nelson Morris nmor...@nelsonmorris.net wrote: If I'm reading everything correctly: 1. Object 's .toString uses .hashCode() 2. LazySeq 's .hashCode() uses seq() which realizes a seq. 3. LazySeq 's .hashCode() calls .hashCode() on the realized seq 3. (map ..) creates a LazySeq with a fn to create (cons val (lazy-seq (map f rest))) 4. (cons ... ...) creates a Cons 5. Cons uses Aseq's .hashcode() which traverses each object in the seq and merges the hashcodes together. A similar thing happens with a (range) as it builds a ChunkedCons which also uses Aseq's hashcode. On Fri, Mar 22, 2013 at 12:53 AM, Marko Topolnik marko.topol...@gmail.com wrote: I am deeply puzzled abouth the behavior of .toString invocation on a lazy sequence. == (.getClass (map println (range 100))) clojure.lang.LazySeq == (.toString (map println (range 100))) ;; integers 0..100 printed clojure.lang.LazySeq@590b4b81 It should be obvious from the output, but for the record: LazySeq doesn't override toString, so just the basic Java method is called. How can this possibly cause the sequence to be realized? Beyond my curiosity, however, what possible purpose could such behavior serve? -marko On Thursday, March 21, 2013 7:54:39 PM UTC+1, Razvan Rotaru wrote: Hi, I'm curious, why doesn't toString of clojure.lang.LazySeq return the entire sequence as a String, and returns the Java pointer instead? I find it annoying when I do this: user (str (map + [1 2 3])) clojure.lang.LazySeq@7861 What's the reason behind this decision? Shouldn't toString trigger the evaluation of the sequence? Doesn't it do that for other values, like numbers and vectors? Is there an alternative to the code above (preferably simple and elegant), which will return the etire sequence? Thanks, Răzvan -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: question about clojure.lang.LazySeq.toString()
Hrm. Sounds like getting the hash of an infinite sequence will hang or cause OOME. On the one hand, *most* uses of the hash are followed by .equals if the hashes match, and .equals on an infinite seq can't work, since if it gives up and says equal after some large number N of elements, the seqs might still differ at position N + 1, and there's no *general* way to determine in an analytic manner whether two seqs will produce identical output, or even whether they're infinite (even given the generating code, those're equivalent to the halting problem). On the other hand, the above use of the hash does *not* require equals to work. Hash could be changed to use only the first N elements of the seq, at most, for some N, and would then work for such uses as in the generic .toString. On the gripping hand, a) doing this would make infinite seqs *mostly* work in associative data structures, but with intermittent failures (when there were collisions), instead of failing promptly every time, and b) .toString for LazySeq might more productively just produce (the seq), if it's going to fail on infinite seqs anyway. On Fri, Mar 22, 2013 at 2:29 AM, Nelson Morris nmor...@nelsonmorris.netwrote: If I'm reading everything correctly: 1. Object 's .toString uses .hashCode() 2. LazySeq 's .hashCode() uses seq() which realizes a seq. 3. LazySeq 's .hashCode() calls .hashCode() on the realized seq 3. (map ..) creates a LazySeq with a fn to create (cons val (lazy-seq (map f rest))) 4. (cons ... ...) creates a Cons 5. Cons uses Aseq's .hashcode() which traverses each object in the seq and merges the hashcodes together. A similar thing happens with a (range) as it builds a ChunkedCons which also uses Aseq's hashcode. On Fri, Mar 22, 2013 at 12:53 AM, Marko Topolnik marko.topol...@gmail.com wrote: I am deeply puzzled abouth the behavior of .toString invocation on a lazy sequence. == (.getClass (map println (range 100))) clojure.lang.LazySeq == (.toString (map println (range 100))) ;; integers 0..100 printed clojure.lang.LazySeq@590b4b81 It should be obvious from the output, but for the record: LazySeq doesn't override toString, so just the basic Java method is called. How can this possibly cause the sequence to be realized? Beyond my curiosity, however, what possible purpose could such behavior serve? -marko On Thursday, March 21, 2013 7:54:39 PM UTC+1, Razvan Rotaru wrote: Hi, I'm curious, why doesn't toString of clojure.lang.LazySeq return the entire sequence as a String, and returns the Java pointer instead? I find it annoying when I do this: user (str (map + [1 2 3])) clojure.lang.LazySeq@7861 What's the reason behind this decision? Shouldn't toString trigger the evaluation of the sequence? Doesn't it do that for other values, like numbers and vectors? Is there an alternative to the code above (preferably simple and elegant), which will return the etire sequence? Thanks, Răzvan -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from
Re: Clojure - CLR - JS - Visual Studio Extension
I've added beta support for ClojureScript to vsClojure on the visual studio gallery for vs2012. Please try it out and let me know how it works. You can see more details about the post on the ClojureCLR group at http://gplus.to/clojureclr Thanks, Devin On Thursday, March 21, 2013 9:42:52 PM UTC-6, Ambrose Bonnaire-Sergeant wrote: I'm using Mono on Ubuntu, and I have these errors/failures (including project.clj at the bottom): https://gist.github.com/frenchy64/5218783 This is with commit 3b387f914815e389313897977eb02a9fba89dea2 Is this to do with my environment? Thanks, Ambrose On Fri, Mar 22, 2013 at 11:09 AM, Ambrose Bonnaire-Sergeant abonnair...@gmail.com javascript: wrote: Hi David, Excellent work so far! I'll have a dig around and see what I find. Thanks, Ambrose On Fri, Mar 22, 2013 at 10:53 AM, dmiller dmill...@gmail.comjavascript: wrote: Last update on this here: The port of core.logic to ClojureCLR that resides here: https://github.com/**dmiller/clr.core.logichttps://github.com/dmiller/clr.core.logic the datomic piece is not ported. All tests run EXCEPT: test-binding-map-* test-binding-map-as-1 test-binding-map-constraints-1 test-unifier-constraints-* test-flatteno test-unifier-anon-constraints-3 test-36-unifier-behavior These tests mostly involve clojure.core.logic.unifier/unify and .../unifier. It is rather daunting to just jump into core.logic and debug this kind of thing, so it might take a while for me to solve this. I invite anyone interested in ClojureCLR + core.logic to take a look. -David -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: question about clojure.lang.LazySeq.toString()
Eh. Not just any collisions, but only ones where the succession of tails are equal-as-seqs but not identical as objects (.equals, but not ==) for sufficiently long. So seqs that differ after only a trillion items would blow up. So would equal ones sharing no tail structure. Putting (iterate inc 0) and (range) into a hashset together would fail, and (concat (range 10) [3]) and (concat (range 10) [4]) dropped in together would either fail or make things really, really sloow, depending on whether anything held onto the head of either seq. On Fri, Mar 22, 2013 at 2:37 AM, Cedric Greevey cgree...@gmail.com wrote: Hrm. Sounds like getting the hash of an infinite sequence will hang or cause OOME. On the one hand, *most* uses of the hash are followed by .equals if the hashes match, and .equals on an infinite seq can't work, since if it gives up and says equal after some large number N of elements, the seqs might still differ at position N + 1, and there's no *general* way to determine in an analytic manner whether two seqs will produce identical output, or even whether they're infinite (even given the generating code, those're equivalent to the halting problem). On the other hand, the above use of the hash does *not* require equals to work. Hash could be changed to use only the first N elements of the seq, at most, for some N, and would then work for such uses as in the generic .toString. On the gripping hand, a) doing this would make infinite seqs *mostly* work in associative data structures, but with intermittent failures (when there were collisions), instead of failing promptly every time, and b) .toString for LazySeq might more productively just produce (the seq), if it's going to fail on infinite seqs anyway. On Fri, Mar 22, 2013 at 2:29 AM, Nelson Morris nmor...@nelsonmorris.netwrote: If I'm reading everything correctly: 1. Object 's .toString uses .hashCode() 2. LazySeq 's .hashCode() uses seq() which realizes a seq. 3. LazySeq 's .hashCode() calls .hashCode() on the realized seq 3. (map ..) creates a LazySeq with a fn to create (cons val (lazy-seq (map f rest))) 4. (cons ... ...) creates a Cons 5. Cons uses Aseq's .hashcode() which traverses each object in the seq and merges the hashcodes together. A similar thing happens with a (range) as it builds a ChunkedCons which also uses Aseq's hashcode. On Fri, Mar 22, 2013 at 12:53 AM, Marko Topolnik marko.topol...@gmail.com wrote: I am deeply puzzled abouth the behavior of .toString invocation on a lazy sequence. == (.getClass (map println (range 100))) clojure.lang.LazySeq == (.toString (map println (range 100))) ;; integers 0..100 printed clojure.lang.LazySeq@590b4b81 It should be obvious from the output, but for the record: LazySeq doesn't override toString, so just the basic Java method is called. How can this possibly cause the sequence to be realized? Beyond my curiosity, however, what possible purpose could such behavior serve? -marko On Thursday, March 21, 2013 7:54:39 PM UTC+1, Razvan Rotaru wrote: Hi, I'm curious, why doesn't toString of clojure.lang.LazySeq return the entire sequence as a String, and returns the Java pointer instead? I find it annoying when I do this: user (str (map + [1 2 3])) clojure.lang.LazySeq@7861 What's the reason behind this decision? Shouldn't toString trigger the evaluation of the sequence? Doesn't it do that for other values, like numbers and vectors? Is there an alternative to the code above (preferably simple and elegant), which will return the etire sequence? Thanks, Răzvan -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from
doing a Google search from Clojure?
I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Redefinition of datatypes
Now that ClojureWest has finished, I'll gently bump this thread :) Thanks, Ambrose On Wed, Mar 13, 2013 at 12:51 PM, Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com wrote: core.typed dependencies are all in Central now. Here's a reproducible example of this failure. http://build.clojure.org/job/core.typed/3/console Thanks, Ambrose On Sun, Feb 24, 2013 at 12:50 AM, Chas Emerick c...@cemerick.com wrote: On Feb 23, 2013, at 11:35 AM, Stuart Sierra wrote: Furthermore, according to the policy of the Maven Central Repositoryhttp://search.maven.org/, we cannot deploy anything which depends on third-party repositories. Therefore we cannot deploy core.typed to the Central Repository unless all its dependencies are also deployed there. Straying further off-topic, but: FWIW, unless they've changed the verification of POMs being promoted recently, that's not so. The official guide to OSS deployment only says it's strongly discouraged ( https://docs.sonatype.org/display/Repository/Sonatype+OSS+Maven+Repository+Usage+Guide), and links to blog posts that indicate that Sonatype is (was?) planning on rewriting POMs to remove external repository definitions, but tons of artifacts in central still contain them, e.g.: http://repo1.maven.org/maven2/org/openid4java/openid4java-nodeps/0.9.6/openid4java-nodeps-0.9.6.pom (…which refers to a now-defunct Guice repository, thus highlighting the rationale for the proposed no-external-repositories policy.) Cheers, - Chas -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
Change your code to it spoofs a common browser user-agent, change your DHCP-assigned IP address, and try again. They're probably trying to obstruct bots from making overwhelming numbers of requests or something. As long as you don't flood them with requests at a higher rate than a human would generate by clicking, I don't see any ethical issue with circumventing their countermeasures, especially not if the search will be triggered by a user input to your application anyway. On Fri, Mar 22, 2013 at 3:09 AM, Rich Morin r...@cfcl.com wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Native library not found after upgrade to leiningen 2.0
You can see the actual path used by doing this in the repl:
(System/getProperty java.library.path)
I found it best to wrap native libs in a jar with this internal structure:
/META-INF/MANIFEST.MF
/native/linux/x86
/native/linux/x86_64
/native/macosx/x86
/native/macosx/x86_64
/native/windows/x86
/native/windows/x86_64
Then deploy the jar to your repo and refer to it as normal from
project.clj, no need to set native path manually...
On 22 March 2013 02:17, xumingmingv xumingming64398...@gmail.com wrote:
Have a look at this:
http://nakkaya.com/2010/04/05/managing-native-dependencies-with-leiningen/
在 2013-3-22，上午6:55，Dave Snowdon dave.snow...@gmail.com 写道：
I just upgraded from leiningen version 1.5.2 to 2.0.0 and noticed that the
native library path no longer seems to be set correctly.
Here is my project file:
(defproject naojure 0.1.0-SNAPSHOT
:description Clojure wrapper for Aldebaran Robotics java NAOQI binding.
Depends on the Aldebaran jar file being installed in a local repo and the
shared library being in the dynamic library load path
:url https://github.com/davesnowdon/naojure;
:repositories {local ~(str (.toURI (java.io.File. maven_repository)))}
:native-path native
:dependencies [[org.clojure/clojure 1.4.0] [com.aldebaran/jnaoqi
1.14.0]])
The native library is in a folder native at the top-level of the project
and the corresponding jar in a local repo also contained within the
leiningen project.
If I run lein1 repl (I renamed the old leiningen script before upgrading)
then I can create instances of native classes from the repl, If I run lein
repl (leiningen 2.0.0) then I get the following error:
CompilerException java.lang.UnsatisfiedLinkError: no jnaoqi in
java.library.path, compiling:(NO_SOURCE_PATH:1)
Here are the exact values reported by lein version (running on Linux -
Fedora Core 14)
Leiningen 1.5.2 on Java 1.6.0_20 OpenJDK 64-Bit Server VM
Leiningen 2.0.0 on Java 1.6.0_20 OpenJDK 64-Bit Server VM
I've looked online for issues related to leiningen and native path handling
but the bugs I found all related to leiningen 1 and have been supposedly
fixed.
Can anyone suggest why the native library is not being located?
thanks
Dave
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Re: Get difference between two lists with java objects of same class
Thanks once again Marko. The only thing that I am having trouble
understanding is this:
1. What exactly happens when an item is passed to #(keyset-b (key-fn %)) ? Does
keyset-b looks up itself (because collections are functions) for the item
which contains *:id X *and returns true/false?
It returns the argument if it contains it, and otherwise
nil.http://clojure.org/data_structures#Data%20Structures-Sets
Let's assume that key-fn is defined as #(.getID %) so we have:
#(keyset-b #(.getID %))
And now let's assume that item-object is passed to it. So, #(.getID %) returns,
let's say, the number 3 (which is the value of the id). How exactly is that
number is being looked up in keyset-b? How does keyset-b knows we are
looking for an item with key id and value 3?
Apparently I am missing something here hence my confusion.
Cheers
On Thursday, March 21, 2013 8:48:51 PM UTC+2, Marko Topolnik wrote:
On Thursday, March 21, 2013 5:21:53 PM UTC+1, Ryan wrote:
Thanks Marko. I do have couple more q's for you just to ensure I got
everything right:
(comp keyset-b key-fn)
This results in a function that first applies *key-fn*, then *keyset-b*.
So it's like #(keyset-b (key-fn %)). Let's call this function *predicate
*.
1. What exactly happens when an item is passed to #(keyset-b (key-fn %)) ?
Does
keyset-b looks up itself (because collections are functions) for the item
which contains *:id X *and returns true/false?
It returns the argument if it contains it, and otherwise
nil.http://clojure.org/data_structures#Data%20Structures-Sets
2. Isn't it more idiomatic to write #((key-fn %) keyset-b) ?
No, because it doesn't work :) An arbitrary object cannot be applied as a
function.
3. Does remove loops list-a internally and applies the predicate to each
item? (if the answer is no my head will definitely explode)
*remove* is just like *filter*, only with reversed logic. Its
implementation in fact is literally
(filter (complement pred)
coll))http://clojuredocs.org/clojure_core/1.2.0/clojure.core/remove
On Thursday, March 21, 2013 6:09:42 PM UTC+2, Marko Topolnik wrote:
Personal preference. It causes less mental load because it more
obviously spells out what you are doing.
On Thursday, March 21, 2013 4:58:08 PM UTC+1, Ryan wrote:
Thanks a lot Marko. Much better now :)
I also wanted to ask you why did you mention in a previous post that
you prefer using *remove *than *filter + complement*. Is there a
reason for this or just a personal preference?
Ryan
On Thursday, March 21, 2013 5:37:33 PM UTC+2, Marko Topolnik wrote:
First we build a set of all the keys in *list-b*:
(into #{} (map key-fn list-b))
Let's call that set *keyset-b. *Then we use *keyset-b* as a function
which returns truthy (non-nil) for any key that is contained in it, and
compose it with our *key-fn*:
(comp keyset-b key-fn)
This results in a function that first applies *key-fn*, then *keyset-b
*. So it's like #(keyset-b (key-fn %)). Let's call this function *
predicate*.
Finally, we use *predicate* to *remove* any member of *list-a* for
which it is truthy:
(remove predicate list-a)
-marko
On Thursday, March 21, 2013 4:14:46 PM UTC+1, Ryan wrote:
Marko,
Can you please do me a favor and break down the function you
suggested me? I understand partially how it works but I am having
trouble
to fully get it.
(remove (comp (into #{} (map key-fn list-b)) key-fn) list-a)
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Re: Get difference between two lists with java objects of same class
Let's assume that key-fn is defined as #(.getID %) so we have: #(keyset-b #(.getID %)) And now let's assume that item-object is passed to it. So, #(.getID %) returns, let's say, the number 3 (which is the value of the id). How exactly is that number is being looked up in keyset-b? How does keyset-b knows we are looking for an item with key id and value 3? Well, as its name already indicates, te keyset contains the keys. So it will literally contain that 3 as its member. -marko -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure - CLR - JS - Visual Studio Extension
I've not seen that behavior on ClojureCLR/Mono before. What ClojureCLR commit are you using? On Thursday, March 21, 2013 10:42:52 PM UTC-5, Ambrose Bonnaire-Sergeant wrote: I'm using Mono on Ubuntu, and I have these errors/failures (including project.clj at the bottom): https://gist.github.com/frenchy64/5218783 This is with commit 3b387f914815e389313897977eb02a9fba89dea2 Is this to do with my environment? Thanks, Ambrose On Fri, Mar 22, 2013 at 11:09 AM, Ambrose Bonnaire-Sergeant abonnair...@gmail.com javascript: wrote: Hi David, Excellent work so far! I'll have a dig around and see what I find. Thanks, Ambrose On Fri, Mar 22, 2013 at 10:53 AM, dmiller dmill...@gmail.comjavascript: wrote: Last update on this here: The port of core.logic to ClojureCLR that resides here: https://github.com/**dmiller/clr.core.logichttps://github.com/dmiller/clr.core.logic the datomic piece is not ported. All tests run EXCEPT: test-binding-map-* test-binding-map-as-1 test-binding-map-constraints-1 test-unifier-constraints-* test-flatteno test-unifier-anon-constraints-3 test-36-unifier-behavior These tests mostly involve clojure.core.logic.unifier/unify and .../unifier. It is rather daunting to just jump into core.logic and debug this kind of thing, so it might take a while for me to solve this. I invite anyone interested in ClojureCLR + core.logic to take a look. -David -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Leiningen 2.1.1 released
By the way, is there any place to get a full tarball (or zip) of leiningen and its dependencies? Not all of the machines I'm working on have external internet access, so I can't bootstrap as usual. On Thursday, March 21, 2013 6:44:09 PM UTC-4, Phil Hagelberg wrote: Hello folks. I've just pushed out version 2.1.1 of Leiningen, which contains a handful of bug fixes from 2.1.0. * Add `:test-paths` to directories shared by checkout deps. (Phil Hagelberg) * Allow `run` task to function outside projects. (Phil Hagelberg) * Fix a bug preventing `with-profiles` working outside projects. (Colin Jones) * Fix a bug in trampolined `repl`. (Colin Jones) * Fix a bug in `update-in` task causing stack overflow. (David Powell) * Fix a bug in `lein upgrade`. (Phil Hagelberg) This should address a few issues people came across in 2.1.0, but there's nothing terribly exciting. That is all. -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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
Found some info here: http://stackoverflow.com/questions/3727662/how-can-you-search-google-programmatically-java-api Jonathan On Fri, Mar 22, 2013 at 8:32 AM, Cedric Greevey cgree...@gmail.com wrote: Change your code to it spoofs a common browser user-agent, change your DHCP-assigned IP address, and try again. They're probably trying to obstruct bots from making overwhelming numbers of requests or something. As long as you don't flood them with requests at a higher rate than a human would generate by clicking, I don't see any ethical issue with circumventing their countermeasures, especially not if the search will be triggered by a user input to your application anyway. On Fri, Mar 22, 2013 at 3:09 AM, Rich Morin r...@cfcl.com wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[ANN] Pedestal Application Framework
Hello! At Relevance, we have been working on a way to build applications delivered over the web for some time, and unveiled our work at Clojure/West. If you missed it, our work is called Pedestal, and while it is still immature and in an alpha state, we've opened it up and are interested in receiving people's feedback. We consider this a solution for delivering applications where most of the interaction happens in the browser, where delivering information to browsers should happen quickly and responsively, and where servers are primarily responsible for processing data, not creating and transmitting presentations. If you'd like to learn more, please visit the project's website at http://pedestal.io To see some sample applications, please checkout and review our sample Git repository hosted at http://github.com/pedestal/samples To start with a new pedestal application, you can do: lein new pedestal-application your app name To start a new pedestal service, you can do: lein new pedestal-service your app name Please let us know what you think! -Alex Redingotn -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Leiningen 2.1.1 released
There are just two files, the bin script and the uberjar. Though for project dependencies and the repl you will need to download further jars from a repository. So hopefully you have an internal mirror or something for that. -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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Refactoring tools
I feel your pain, would love to see some Clojure refactorings. I had started working on the 1.3 branch of clojure-refactoring trying to bring it up to speed. I met with Tony (the original author of clojure-refactoring) and Phil H. at Clojure/West. Tony was very adamant that we ditch his code and start over. Currently I'm doing some experimenting with sjacket (https://github.com/cgrand/sjacket) trying to see if we could make that work for renaming. Once I'm confident that direction will work I'm happy to throw some code up on Github. If someone beats me to it then I'd like to contribute to their project. I just created a #clojure-refactoring channel up on Freenode to make it easier to collaborate. We can rename the node once a name emerges for a new project. On Thursday, March 21, 2013 12:12:42 AM UTC-6, Akhil Wali wrote: A fairly new project for refactoring Clojure is clj-refactor.el. Not too much functionality yet, but supplements clojure-refactoring pretty well. clj-refactor.el will later interop with nRepl, or that's the plan I heard. That aside (and I know I'm being redundant), refactoring any Lisp is a snap with paredit-mode. It doesn't do stuff like renaming a function or exracting a var, but I've had some success in making these operations as interactive functions. On Thu, Mar 21, 2013 at 8:11 AM, Devin Walters dev...@gmail.comjavascript: wrote: Yeah it sort of bums me out that clojure-refactoring has been in the ditch. There are a number of tasks to get this back into a good state. The plan right now is to take tests (which were mostly failing and using outdated dependencies) from the old-test directory and get them passing under Midje. Then, get it to play nicely with nrepl and update any elisp that needs updating to bring back the clojure-refactoring minor mode. If anyone wants to help resurrect this project: https://github.com/devn/clojure-refactoring/tree/clojure-1.5 your help would be appreciated. I created a new branch and started bringing old failing tests over. Feel free to drop me a pull request. Big, sweeping commits and tiny typo commits are both equally welcome. On Wednesday, March 20, 2013 at 8:22 PM, Dave Kincaid wrote: Thanks. It looks like nothing has happened on that in a year and it appears to require slime/swank. But it's a start I guess if there isn't anything else. On Wednesday, March 20, 2013 6:13:30 PM UTC-7, Devin Walters (devn) wrote: I don't think much has happened with it recently, but I used to use https://github.com/joodie/**clojure-refactoringhttps://github.com/joodie/clojure-refactoring . -- '(Devin Walters) Sent from my Motorola RAZR V3 (Matte Black) On Wednesday, March 20, 2013 at 8:05 PM, Dave Kincaid wrote: I'm wondering if there are any refactoring tools around for working with Clojure projects in Emacs. There seems to be all kinds of other tools except for refactoring. I'm really looking for simple things like ways to easily rename variables, functions, namespaces, etc. That seems to be the most common thing I'm trying to do. Are there any tools out there to make it easier? Thanks, Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at http://groups.google.com/**group/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@**googlegroups.com. For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your
Re: doing a Google search from Clojure?
Setting the user agent did the trick, at least in my case. (ns google-search (:import [java.net URL URLEncoder])) (def google-search-url http://www.google.com/search?q=;) (def user-agent Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.172) (defn open-connection [url] (doto (.openConnection url) (.setRequestProperty User-Agent user-agent))) (defn get-response [url] (let [conn (open-connection url) in (.getInputStream conn) sb (StringBuilder.)] (loop [c (.read in)] (if (neg? c) (str sb) (do (.append sb (char c)) (recur (.read in))) (defn search [query] (let [url (URL. (str google-search-url (URLEncoder/encode query)))] (get-response url))) (spit response.html (search URLEncoder java 7)) HIH, Juan On Friday, March 22, 2013 4:32:33 AM UTC-3, Cedric Greevey wrote: Change your code to it spoofs a common browser user-agent, change your DHCP-assigned IP address, and try again. They're probably trying to obstruct bots from making overwhelming numbers of requests or something. As long as you don't flood them with requests at a higher rate than a human would generate by clicking, I don't see any ethical issue with circumventing their countermeasures, especially not if the search will be triggered by a user input to your application anyway. On Fri, Mar 22, 2013 at 3:09 AM, Rich Morin r...@cfcl.com javascript:wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com javascript: http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
On 22/03/13 15:00, juan.facorro wrote: (do (.append sb (char c)) do you really need the 'do'? Jim -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
Yes, the *do *is necessary since the character needs to be appended to the *StringBuilder *and *recur *needs to be called after doing that. I actually took the code from the clojure.core/slurphttps://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L6279function :). Cheers, Juan On Fri, Mar 22, 2013 at 12:20 PM, Jim - FooBar(); jimpil1...@gmail.comwrote: On 22/03/13 15:00, juan.facorro wrote: (do (.append sb (char c)) do you really need the 'do'? Jim -- -- 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 a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/clojure/QwKmsLwLhjE/unsubscribe?hl=en. To unsubscribe from this group and all its topics, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- Juan Facorro -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
On 22/03/13 15:20, Jim - FooBar(); wrote: On 22/03/13 15:00, juan.facorro wrote: (do (.append sb (char c)) do you really need the 'do'? Jim ooops! I'm really sorry! my bad! JIm -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: If there is no nil values, why do I get null pointer exception?
I would guess the NPE comes from the form (xml/emit-str
(xml/map-Element next-movie-as-map)), given that (conj nil nil) does
not throw.
Perhaps try to isolate the problem in a smaller chunk of code, and
then file a bug with the data.xml library?
On 21 March 2013 19:16, larry google groups lawrencecloj...@gmail.com wrote:
I am getting a null pointer exception in the line where I conj into the
vector. I added the pprint so I could see what was going on. I am confused
by the outcome:
(defn convert-json-to-xml [json-as-flat-maps]
(reduce
(fn [vector-of-strings next-movie-as-map]
(println next move as map: )
(println (pp/pprint next-movie-as-map))
(if (seq next-movie-as-map)
(conj vector-of-strings (xml/emit-str (xml/map-Element
next-movie-as-map)))
vector-of-strings))
[]
json-as-flat-maps))
The pprint is showing me this:
{:film_64209.9096316473 513e67e3c07f5dd74551,
:cast_member_64209.9096316473 5148c50dc07f5db4233a,
:title_64209.9096316473 Sound design,
:director ,
:runtime 5,
:movie-id 513e67e3c07f5dd74551,
:title Two Islands,
:thumb
https://s3.amazonaws.com/tribeca_cms_production/uploads/uploads/film/photo_1/513e67e3c07f5dd74551/small_TWO_ISLANDS_2_pubs.jpg;,
:categories [Documentary],
:youtube_url ,
:website_url ,
:name_64209.9096316473 Svante Colérus,
:description
Two Islands is film about two enormous waste dumps in New York City. The
first was once the largest dump in the world. The other, a cemetery of
unknowns, is still in use. Two Islands bluntly asks, what does the existence
of these two huge mountains of economic and social waste and rejected
surplus tell us about our civilization and the so-called richest nation in
the world? What kind of legacy will future archaeologists see?}
Any thoughts about what triggers a null pointer exception? I am using this
XML library:
http://clojure.github.com/data.xml/
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Re: If there is no nil values, why do I get null pointer exception?
Thank you.
I need to import this json and convert it to XML or CSV:
http://tribecafilm.com/api/xomo/films.json
I'm guessing that the problem is the nested vector of cast members, which
my project manager has asked me to flatten (I think she is planning work
with this in Microsoft Excel, eventually).
I start with rows like this:
;;
;; {
;;
Thumb_img_url:https:\/\/s3.amazonaws.com\/tribeca_cms_production\/uploads\/uploads\/film\/photo_1\/513a82d1c07f5d471377\/small_odayaka__1_PUBS.jpg,
;; website_url:,
;; director:,
;; large_img_url:null,
;; youtube_url:,
;; title:Odayaka,
;; runtime:100,
;; id:513a82d1c07f5d471377,
;; categories:[Drama],
;; description:The Great East Japan Earthquake has just
struck, the waters of the ensuing tsunami finally rolling back into the
sea. In the comparative safety of Tokyo, two wives and a child living in
the same apartment building have nothing to do but wait for their
husbands\u2019 return. Nobuteru Uchida finds a striking emotional core to
the shock of March 11, 2011, crafting a tender and intelligent narrative on
the internal effects of an unspeakable national tragedy.,
;; cast:
;; [
;; {
;; _id:513a82d1c07f5d471378,
;; film_id:513a82d1c07f5d471377,
;; name:Jo Keita,
;; Aya Saito,
;; title:Associate Producer
;; },
;; {
;; _id:513a82d1c07f5d471379,
;; film_id:513a82d1c07f5d471377,
;; name:Kiki Sugino,
;; Yukiko Shinohara,
;; Takeshi Yamamoto,
;; Ami Watanabe,
;; Yu Koyanagi,
;; Makiko Watanabe,
;; title:Cast
;; },
;; {
;; _id:513a82d1c07f5d47137a,
;; film_id:513a82d1c07f5d471377,
;; name:Shinichi Tsunoda,
;; title:Cinematographer
;; },
;; {
;; _id:513a82d1c07f5d47137b,
;; film_id:513a82d1c07f5d471377,
;; name:Jo Keita,
;; title:Composer
;; },
;; {
;; _id:513a82d1c07f5d47137c,
;; film_id:513a82d1c07f5d471377,
;; name:Nobuteru Uchida,
;; title:Director
;; },
;; {
;; _id:513a82d1c07f5d47137d,
;; film_id:513a82d1c07f5d471377,
;; name:Nobuteru Uchida,
;; title:Editor
;; },
;; {
;; _id:513a82d1c07f5d47137e,
;; film_id:513a82d1c07f5d471377,
;; name:Kousuke Ono,
;; title:Executive Producer
;; },
;; {
;; _id:513a82d1c07f5d47137f,
;; film_id:513a82d1c07f5d471377,
;; name:Kiki Sugino,
;; Eric Nyari,
;; title:Producer
;; },
;; {
;; _id:513a82d1c07f5d471380,
;; film_id:513a82d1c07f5d471377,
;; name:Nobuteru Uchida,
;; title:Screenwriter
;; }
;; ]
;; },
I flattened this by inventing keys for the nested cast members. But now my
different rows have different keys. I guess I should pad this so they all
have the same rows? Or maybe I've missed something obvious? Seems like I
shouldn't have to engage in ugly hacks for something this simple.
On Friday, March 22, 2013 11:37:31 AM UTC-4, Gary Verhaegen wrote:
I would guess the NPE comes from the form (xml/emit-str
(xml/map-Element next-movie-as-map)), given that (conj nil nil) does
not throw.
Perhaps try to isolate the problem in a smaller chunk of code, and
then file a bug with the data.xml library?
On 21 March 2013 19:16, larry google groups
lawrenc...@gmail.comjavascript:
wrote:
I am getting a null pointer exception in the line where I conj into the
vector. I added the pprint so I could see what was going on. I am
confused
by the outcome:
(defn convert-json-to-xml [json-as-flat-maps]
(reduce
(fn [vector-of-strings next-movie-as-map]
(println next move as map: )
(println (pp/pprint next-movie-as-map))
(if (seq next-movie-as-map)
(conj vector-of-strings (xml/emit-str (xml/map-Element
next-movie-as-map)))
vector-of-strings))
[]
json-as-flat-maps))
The pprint is showing me this:
{:film_64209.9096316473 513e67e3c07f5dd74551,
:cast_member_64209.9096316473 5148c50dc07f5db4233a,
:title_64209.9096316473 Sound design,
Re: doing a Google search from Clojure?
On Mar 22, 2013, at 08:00, juan.facorro wrote: Setting the user agent did the trick, at least in my case. Thanks! Using your code, I was able to bring in a page and write it to a file. I was then able to confirm that it had the expected content. FTW! I still think this should be easier, but now I'm back on a productive path. -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Pedestal Application Framework
2013/3/22 Alex Redinton alex.reding...@thinkrelevance.com Please let us know what you think! Will Pedestal accept pull requests? -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Get difference between two lists with java objects of same class
Thanks a lot Marko :) On Friday, March 22, 2013 12:44:06 PM UTC+2, Marko Topolnik wrote: Let's assume that key-fn is defined as #(.getID %) so we have: #(keyset-b #(.getID %)) And now let's assume that item-object is passed to it. So, #(.getID %) returns, let's say, the number 3 (which is the value of the id). How exactly is that number is being looked up in keyset-b? How does keyset-b knows we are looking for an item with key id and value 3? Well, as its name already indicates, te keyset contains the keys. So it will literally contain that 3 as its member. -marko -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
I gave the code another look and remembered that *slurp* can actually handle a bunch of types as input, so I just passed the *InputStream *from the connection and got the same results. Additionaly in the code I posted before, the *get-response* function was never closing the stream, which * slurp* does. (ns google-search (:import [java.net URL URLEncoder])) (def google-search-url http://www.google.com/search?q=;) (def user-agent Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.172) (defn open-connection [url] (doto (.openConnection url) (.setRequestProperty User-Agent user-agent))) (defn get-response [url] (let [conn (open-connection url) sb (StringBuilder.)] (slurp (.getInputStream conn (defn search [query] (let [url (java.net.URL. (str google-search-url (URLEncoder/encode query)))] (get-response url))) (spit response.html (search clojure google)) J On Friday, March 22, 2013 1:02:53 PM UTC-3, Rich Morin wrote: On Mar 22, 2013, at 08:00, juan.facorro wrote: Setting the user agent did the trick, at least in my case. Thanks! Using your code, I was able to bring in a page and write it to a file. I was then able to confirm that it had the expected content. FTW! I still think this should be easier, but now I'm back on a productive path. -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com javascript: http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
Rich, you may want to check out clojure-http-client. https://github.com/technomancy/clojure-http-client (require '[clj-http.client :as client]) (spit result.html (client/get http://www.google.com/search?q=clojure;)) On Friday, March 22, 2013 12:09:07 AM UTC-7, Rich Morin wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com javascript: http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
clojure-http-client is more or less unmaintained. https://github.com/dakrone/clj-http is the canonical http client these days. Lazybot has a plugin for doing this with the google ajax api, if that's helpful. No API key needed. https://github.com/flatland/lazybot/blob/develop/src/lazybot/plugins/google.clj On Friday, March 22, 2013 10:54:37 AM UTC-7, Armando Blancas wrote: Rich, you may want to check out clojure-http-client. https://github.com/technomancy/clojure-http-client (require '[clj-http.client :as client]) (spit result.html (client/get http://www.google.com/search?q=clojure;)) On Friday, March 22, 2013 12:09:07 AM UTC-7, Rich Morin wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
LoL which style for Clojure
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
Cheers,
Jamie
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Re: [ANN] Pedestal Application Framework
hurray! It looks really promising. I would mention the relevance podcast about Pedestalhttp://thinkrelevance.com/blog/2013/03/18/pedestal-podcast-episode-027, it's a really smooth introduction. I started playing with Pedestal, and I particularly appreciate the incremental approach of the getting started docs: In a few minutes it walks through the building of a Pedestal app with : a backend ((micro) service) + frontend (clojurescript) + db (datomic), so we've got everything from the start, that's neat! It looks like Clojure's Pedestal is a game-changer. Denis On Fri, Mar 22, 2013 at 5:04 PM, Michael Klishin michael.s.klis...@gmail.com wrote: 2013/3/22 Alex Redinton alex.reding...@thinkrelevance.com Please let us know what you think! Will Pedestal accept pull requests? -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Refactoring tools
2013/3/22 Daniel Glauser danglau...@gmail.com I feel your pain, would love to see some Clojure refactorings. I had started working on the 1.3 branch of clojure-refactoring trying to bring it up to speed. I met with Tony (the original author of clojure-refactoring) and Phil H. at Clojure/West. Tony was very adamant that we ditch his code and start over. Currently I'm doing some experimenting with sjacket ( https://github.com/cgrand/sjacket) trying to see if we could make that work for renaming. Once I'm confident that direction will work I'm happy to throw some code up on Github. If someone beats me to it then I'd like to contribute to their project. I just created a #clojure-refactoring channel up on Freenode to make it easier to collaborate. We can rename the node once a name emerges for a new project. Please note that I've also created a project entry for the Google Summer Of Code for this : creating refactoring library + integration of it into Counterclockwise : http://dev.clojure.org/display/community/Project+Ideas#ProjectIdeas-RefactoringfeatureforCCWotherIDEs I think writing a refactoring library with more than one client in mind (e.g. a command line client as well as an IDE client) is interesting because it will help shape its API (for instance, an IDE client will usually want to offer a view of the modifications to be applied, thus refactoring can have a review step). Cheers, -- Laurent On Thursday, March 21, 2013 12:12:42 AM UTC-6, Akhil Wali wrote: A fairly new project for refactoring Clojure is clj-refactor.el. Not too much functionality yet, but supplements clojure-refactoring pretty well. clj-refactor.el will later interop with nRepl, or that's the plan I heard. That aside (and I know I'm being redundant), refactoring any Lisp is a snap with paredit-mode. It doesn't do stuff like renaming a function or exracting a var, but I've had some success in making these operations as interactive functions. On Thu, Mar 21, 2013 at 8:11 AM, Devin Walters dev...@gmail.com wrote: Yeah it sort of bums me out that clojure-refactoring has been in the ditch. There are a number of tasks to get this back into a good state. The plan right now is to take tests (which were mostly failing and using outdated dependencies) from the old-test directory and get them passing under Midje. Then, get it to play nicely with nrepl and update any elisp that needs updating to bring back the clojure-refactoring minor mode. If anyone wants to help resurrect this project: https://github.com/** devn/clojure-refactoring/tree/**clojure-1.5https://github.com/devn/clojure-refactoring/tree/clojure-1.5 your help would be appreciated. I created a new branch and started bringing old failing tests over. Feel free to drop me a pull request. Big, sweeping commits and tiny typo commits are both equally welcome. On Wednesday, March 20, 2013 at 8:22 PM, Dave Kincaid wrote: Thanks. It looks like nothing has happened on that in a year and it appears to require slime/swank. But it's a start I guess if there isn't anything else. On Wednesday, March 20, 2013 6:13:30 PM UTC-7, Devin Walters (devn) wrote: I don't think much has happened with it recently, but I used to use https://github.com/joodie/clojure-refactoringhttps://github.com/joodie/clojure-refactoring . -- '(Devin Walters) Sent from my Motorola RAZR V3 (Matte Black) On Wednesday, March 20, 2013 at 8:05 PM, Dave Kincaid wrote: I'm wondering if there are any refactoring tools around for working with Clojure projects in Emacs. There seems to be all kinds of other tools except for refactoring. I'm really looking for simple things like ways to easily rename variables, functions, namespaces, etc. That seems to be the most common thing I'm trying to do. Are there any tools out there to make it easier? Thanks, Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at http://groups.google.com/**group**/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@**googlegroups.com. For more options, visit https://groups.google.com/**grou**ps/opt_outhttps://groups.google.com/groups/opt_out . -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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
Re: LoL which style for Clojure
def/defn et. al are top-level form definitions...very rarely (I'd say
never) you'd have a def/defn inside a 'let' or inside anything for that
matter...The 1st one looks good :)
Jim
On 22/03/13 18:59, jamieorc wrote:
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
Cheers,
Jamie
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Re: LoL which style for Clojure
2013/3/22 jamieorc jamie...@gmail.com
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
In either case, AFAIK, the compiler will recognize {:foo 1 :bar 2 :baz 3}
as constant and will only create it once when compiling.
First version is preferred.
Cheers,
Jamie
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Re: LoL which style for Clojure
Thanks, that's what I expected, especially after doing some (time... )
experiments.
On Friday, March 22, 2013 3:05:10 PM UTC-4, Laurent PETIT wrote:
2013/3/22 jamieorc jami...@gmail.com javascript:
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
In either case, AFAIK, the compiler will recognize {:foo 1 :bar 2 :baz 3}
as constant and will only create it once when compiling.
First version is preferred.
Cheers,
Jamie
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Re: Understanding vars
Opened ticket with fix + test http://dev.clojure.org/jira/browse/CLJ-1187 Mark Engelberg writes: On Tue, Mar 19, 2013 at 12:57 AM, Bronsa brobro...@gmail.com wrote: If I remember correctly, this is a bug due to the fact that constant empty literals are handled in a special way from the compiler. Interesting. I see you are correct that the problem only occurs on metadata attached to an empty literal. So does that mean this is a known bug? -- -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: doing a Google search from Clojure?
Thanks, Anthony; will use that one. On Friday, March 22, 2013 11:37:44 AM UTC-7, Anthony Grimes wrote: clojure-http-client is more or less unmaintained. https://github.com/dakrone/clj-http is the canonical http client these days. Lazybot has a plugin for doing this with the google ajax api, if that's helpful. No API key needed. https://github.com/flatland/lazybot/blob/develop/src/lazybot/plugins/google.clj On Friday, March 22, 2013 10:54:37 AM UTC-7, Armando Blancas wrote: Rich, you may want to check out clojure-http-client. https://github.com/technomancy/clojure-http-client (require '[clj-http.client :as client]) (spit result.html (client/get http://www.google.com/search?q=clojure )) On Friday, March 22, 2013 12:09:07 AM UTC-7, Rich Morin wrote: I've been successfully using slurp and laser to harvest and pull apart some web pages. However, I can't figure out how to use Google Search from my code. My first thought was to use the Google Search API, but after a lot of frustration in trying to get and use an API key, I gave up on that. My next thought was to slurp in a page from the interactive Google Search facility, using the URL from Advanced Search: http://www.google.com/search?hl=enas_q=...; However, this gives me a 403 nastygram: IOException Server returned HTTP response code: 403 for URL: https://www.google.com/search?hl=enas_q=as_epq=... sun.net.www.protocol.http.HttpURLConnection.getInputStream (HttpURLConnection.java:1436) Has anyone here, by chance, been able to do this sort of thing? -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Leiningen 2.1.1 released
Just in case it's not said enough, thank you --- and thank you to the other contributors as well --- so much for Leiningen. It is awesome. :) Ooh, and I'm grateful to see the new gpg tut in the docs! Thanks, tcrawley! (BTW, the upgrade from 2.1.0 went fine for me.) ---John On Thursday, March 21, 2013 6:44:09 PM UTC-4, Phil Hagelberg wrote: Hello folks. I've just pushed out version 2.1.1 of Leiningen, which contains a handful of bug fixes from 2.1.0. * Add `:test-paths` to directories shared by checkout deps. (Phil Hagelberg) * Allow `run` task to function outside projects. (Phil Hagelberg) * Fix a bug preventing `with-profiles` working outside projects. (Colin Jones) * Fix a bug in trampolined `repl`. (Colin Jones) * Fix a bug in `update-in` task causing stack overflow. (David Powell) * Fix a bug in `lein upgrade`. (Phil Hagelberg) This should address a few issues people came across in 2.1.0, but there's nothing terribly exciting. That is all. -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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: LoL which style for Clojure
For the example given, I would say it depends on what you are trying to
express.
The function f1 is a function that needs some internal data x to operate
-x might be considered an implementation detail.
The function f2 operates on well known data x -x might be considered
configuration of f2 or a more general concept.
Use both appropriately to write more expressive code -constraining yourself
to only one is like taking some of the colors off your palette.
In addition to the expression differences, there are two closely related
issues that should be considered:
1. There is a difference in the evaluation semantics. In the first
example, the form bound to x is evaluated every time f1 is called. In the
second, the form is invoked just once (at compile time) and then closed
over by f2. That can have very real consequences in real world apps
(performance, side-effects). In simple cases where the form is effectively
constant (as in your example), the compiler may optimize things such that
the costs are equivalent -but I don't think that's a guarantee, especially
on different runtimes (CLR, ClojureScript, etc).
2. There is a scope difference between the two. The second approach allows
you to close over x with multiple functions:
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f3 []
(keys x))
(defn f4 []
(vals x)))
-Chris
On Friday, March 22, 2013 2:59:43 PM UTC-4, jamieorc wrote:
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
Cheers,
Jamie
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Re: LoL which style for Clojure
I've certainly seen this at least a few spots within the 4clojure codebase –
https://github.com/4clojure/4clojure/blob/develop/src/foreclojure/utils.clj#L66-L70
(quick example, I believe there are more)
On Friday, March 22, 2013 3:02:20 PM UTC-4, Jim foo.bar wrote:
def/defn et. al are top-level form definitions...very rarely (I'd say
never) you'd have a def/defn inside a 'let' or inside anything for that
matter...The 1st one looks good :)
Jim
On 22/03/13 18:59, jamieorc wrote:
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
Cheers,
Jamie
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Re: Clojure - CLR - JS - Visual Studio Extension
We never did any testing of the 1.4.x series under mono. If it works at all, that's just a bonus. I'd do mono work off the master branch. lein-clr won't do that directly. You'd have to download, build and set the appropriate environment variable to your bin dir. The current master introduced a bug in the mono build. I should have that fixed tomorrow morning sometime. -David On Friday, March 22, 2013 7:22:54 AM UTC-5, Ambrose Bonnaire-Sergeant wrote: Not sure how to tell the commit, but lein-clr has pulled down: clojure-clr-1.4.0-Debug-4.0.zip Thanks, Ambrose On Fri, Mar 22, 2013 at 8:11 PM, dmiller dmill...@gmail.com javascript: wrote: I've not seen that behavior on ClojureCLR/Mono before. What ClojureCLR commit are you using? On Thursday, March 21, 2013 10:42:52 PM UTC-5, Ambrose Bonnaire-Sergeant wrote: I'm using Mono on Ubuntu, and I have these errors/failures (including project.clj at the bottom): https://gist.github.com/**frenchy64/5218783https://gist.github.com/frenchy64/5218783 This is with commit **3b387f914815e389313897977eb02a**9fba89dea2 Is this to do with my environment? Thanks, Ambrose On Fri, Mar 22, 2013 at 11:09 AM, Ambrose Bonnaire-Sergeant abonnair...@gmail.com wrote: Hi David, Excellent work so far! I'll have a dig around and see what I find. Thanks, Ambrose On Fri, Mar 22, 2013 at 10:53 AM, dmiller dmill...@gmail.com wrote: Last update on this here: The port of core.logic to ClojureCLR that resides here: https://github.com/**dmiller/**clr.core.logichttps://github.com/dmiller/clr.core.logic the datomic piece is not ported. All tests run EXCEPT: test-binding-map-* test-binding-map-as-1 test-binding-map-constraints-1 test-unifier-constraints-* test-flatteno test-unifier-anon-constraints-**3 test-36-unifier-behavior These tests mostly involve clojure.core.logic.unifier/**unify and .../unifier. It is rather daunting to just jump into core.logic and debug this kind of thing, so it might take a while for me to solve this. I invite anyone interested in ClojureCLR + core.logic to take a look. -David -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at http://groups.google.com/**group/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@**googlegroups.com. For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [ANN] Pedestal Application Framework
Looks very interesting. I'd really love to see a screencast of someone building for example the todomvc app form scratch with this cause I for one couldn't really wrap my head around 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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: LoL which style for Clojure
The question should probably be asked: is there a benefit in a given
situation to having the let be outside the scope of the defn? I would argue
that most times it is not, and putting the let outside the function
clutters the code and makes it harder to see the functions defined in the
namespace. If you truly need a const value, then something like this is
better, IMO:
(def ^:private ^:const data {:a 1 :b 2})
(defn f1 [])
(defn f2 [])
I would say that most of the time, the let at the top version could be
refactored into a def with no change in semantics, while at the same time
gaining a bonus to readability.
On Fri, Mar 22, 2013 at 2:41 PM, Robert Pitts rbxbx...@gmail.com wrote:
I've certainly seen this at least a few spots within the 4clojure codebase
–
https://github.com/4clojure/4clojure/blob/develop/src/foreclojure/utils.clj#L66-L70(quick
example, I believe there are more)
On Friday, March 22, 2013 3:02:20 PM UTC-4, Jim foo.bar wrote:
def/defn et. al are top-level form definitions...very rarely (I'd say
never) you'd have a def/defn inside a 'let' or inside anything for that
matter...The 1st one looks good :)
Jim
On 22/03/13 18:59, jamieorc wrote:
Curious which style is preferred in Clojure and why:
(defn f1 []
(let [x {:foo 1 :bar 2 :baz 3}]
(keys x)))
(let [x {:foo 1 :bar 2 :baz 3}]
(defn f2 []
(keys x)))
Cheers,
Jamie
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zero–they had no way to indicate successful termination of their C
programs.”
(Robert Firth)
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Re: ClassNotFoundException: clojure.tools.logging.impl.LoggerFactory
This seems to be a recurring issue. I don't see a public list/bug tracker for clojure.tools.logging, so I'm not clear on where I'm supposed to bring this bug. On Friday, March 15, 2013 9:36:32 AM UTC-7, Michael Blume wrote: I'm seeing this problem in my builds more or less randomly, and don't seem to be the only one http://stackoverflow.com/questions/8291910/noclassdeffounderror-with-clojure-tools-logging https://groups.google.com/forum/#!msg/datomic/6xWGFB-Dx68/_Hr2I4lv39gJ http://clojure-log.n01se.net/date/2012-10-16.html Second link seems to think it's a problem with datomic or maybe lein, but I'm using maven and not using datomic, so it *seems* like there's some race condition involving loading logging classes where this happens. I don't understand this, since LoggerFactory is defined at top-level in clojure.tools.logging.impl and impl is required in the ns declaration of clojure.tools.logging. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: If there is no nil values, why do I get null pointer exception?
Hmm, maybe I simply nested the XML elements incorrectly (though
NullPointerException doesn't give much information about the real problem).
I eventually imported this URL:
http://tribecafilm.com/api/xomo/films.json
With this code:
(defn transform-cast-members-into-xml [cast-members-listed-in-a-vector]
(timbre/spy :debug return value of transform-cast-members-into-xml
(reduce
(fn [vector-of-xml-elements next-cast-member-as-map]
(conj vector-of-xml-elements (xml/element :cast-member {}
(xml/element
:film-id {} (get next-cast-member-as-map film_id))
(xml/element
:cast-member-name {} (get next-cast-member-as-map name))
(xml/element
:cast-member-title {} (get next-cast-member-as-map title)
[]
cast-members-listed-in-a-vector)))
(defn transform-movie-json-to-vector-of-xml-elements [json-to-convert]
(timbre/spy :debug return value of
transform-movie-json-to-vector-of-xml-elements
(reduce
(fn [vector-of-xml-elements next-json-map]
(if (seq next-json-map)
(conj vector-of-xml-elements (xml/element :movie {}
(xml/element
:thumb_img_url {} (get next-json-map Thumb_img_url))
(xml/element
:website_url {} (get next-json-map website_url))
(xml/element
:director {} (get next-json-map director))
(xml/element
:youtube_url {} (get next-json-map youtube_url))
(xml/element
:title {} (get next-json-map title))
(xml/element
:runtime {} (get next-json-map runtime))
(xml/element
:_id {} (get next-json-map _id))
(xml/element
:categories {} (st/join , (get next-json-map categories)))
(xml/element
:description {} (get next-json-map description))
(xml/element
:cast {} (transform-cast-members-into-xml (get next-json-map cast)
vector-of-xml-elements))
[]
json-to-convert)))
(defn json-to-xml [request]
(let [string-to-convert (slurp
http://tribecafilm.com/api/xomo/films.json;)
json-to-convert (json/read-str string-to-convert)
vector-of-xml-elements
(transform-movie-json-to-vector-of-xml-elements json-to-convert)
final-xml-element (xml/element :movies {} vector-of-xml-elements)
page-string (xml/emit-str final-xml-element)
response-headers {:status 200
:headers {Content-Type text/plain}
:body page-string }]
response-headers))
On Friday, March 22, 2013 12:02:25 PM UTC-4, larry google groups wrote:
Thank you.
I need to import this json and convert it to XML or CSV:
http://tribecafilm.com/api/xomo/films.json
I'm guessing that the problem is the nested vector of cast members, which
my project manager has asked me to flatten (I think she is planning work
with this in Microsoft Excel, eventually).
I start with rows like this:
;;
;; {
;; Thumb_img_url:https:\/\/s3.amazonaws.com
\/tribeca_cms_production\/uploads\/uploads\/film\/photo_1\/513a82d1c07f5d471377\/small_odayaka__1_PUBS.jpg,
;; website_url:,
;; director:,
;; large_img_url:null,
;; youtube_url:,
;; title:Odayaka,
;; runtime:100,
;; id:513a82d1c07f5d471377,
;; categories:[Drama],
;; description:The Great East Japan Earthquake has just
struck, the waters of the ensuing tsunami finally rolling back into the
sea. In the comparative safety of Tokyo, two wives and a child living in
the same apartment building have nothing to do but wait for their
husbands\u2019 return. Nobuteru Uchida finds a striking emotional core to
the shock of March 11, 2011, crafting a tender and intelligent narrative on
the internal effects of an unspeakable national tragedy.,
;; cast:
;; [
;; {
;; _id:513a82d1c07f5d471378,
;; film_id:513a82d1c07f5d471377,
;; name:Jo Keita,
;; Aya Saito,
;; title:Associate Producer
;; },
;; {
;; _id:513a82d1c07f5d471379,
;;
Re: Redefinition of datatypes
Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com writes: Now that ClojureWest has finished, I'll gently bump this thread :) Thanks, Ambrose Ambrose, I had a quick look at this. I tried running with zi:test, and it complained about a missing dependency on tools.macro. Adding that as a test scoped dependency and running again gives me: [ERROR] InvocationTargetException: java.lang.StringIndexOutOfBoundsException: String index out of range: 1, compiling:(clojure/core/typed/test/mini_kanren.clj:575:3) The original error seems to have something to do with the core.contracts expansion. Defining TopFilter and BotFilter with c.core/defrecord (and defining appropriate type predicate functions) seems to get further. Hugo -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: ClassNotFoundException: clojure.tools.logging.impl.LoggerFactory
Links to pages where you can file problem reports using JIRA, for Clojure and all of its contrib libraries (of which tools.logging is one) can be found here: http://dev.clojure.org/jira/secure/BrowseProjects.jspa#all You will need to create an account to be able to create a new ticket. Click on the Log In link near the top right of the tools.logging page to do so. Andy On Fri, Mar 22, 2013 at 3:26 PM, Michael Blume blume.m...@gmail.com wrote: This seems to be a recurring issue. I don't see a public list/bug tracker for clojure.tools.logging, so I'm not clear on where I'm supposed to bring this bug. On Friday, March 15, 2013 9:36:32 AM UTC-7, Michael Blume wrote: I'm seeing this problem in my builds more or less randomly, and don't seem to be the only one http://stackoverflow.com/**questions/8291910/**noclassdeffounderror-with- **clojure-tools-logginghttp://stackoverflow.com/questions/8291910/noclassdeffounderror-with-clojure-tools-logging https://groups.google.com/**forum/#!msg/datomic/6xWGFB-** Dx68/_Hr2I4lv39gJhttps://groups.google.com/forum/#!msg/datomic/6xWGFB-Dx68/_Hr2I4lv39gJ http://clojure-log.n01se.net/**date/2012-10-16.htmlhttp://clojure-log.n01se.net/date/2012-10-16.html Second link seems to think it's a problem with datomic or maybe lein, but I'm using maven and not using datomic, so it *seems* like there's some race condition involving loading logging classes where this happens. I don't understand this, since LoggerFactory is defined at top-level in clojure.tools.logging.impl and impl is required in the ns declaration of clojure.tools.logging. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Redefinition of datatypes
On Sat, Mar 23, 2013 at 7:32 AM, Hugo Duncan duncan.h...@gmail.com wrote: Ambrose Bonnaire-Sergeant abonnaireserge...@gmail.com writes: Now that ClojureWest has finished, I'll gently bump this thread :) Thanks, Ambrose Ambrose, I had a quick look at this. I tried running with zi:test, and it complained about a missing dependency on tools.macro. Adding that as a test scoped dependency and running again gives me: [ERROR] InvocationTargetException: java.lang.StringIndexOutOfBoundsException: String index out of range: 1, compiling:(clojure/core/typed/test/mini_kanren.clj:575:3) The original error seems to have something to do with the core.contracts expansion. Defining TopFilter and BotFilter with c.core/defrecord (and defining appropriate type predicate functions) seems to get further. Cheers Hugo. You're right, it does get further with some defrecords, then gets stuck at another defconstrainedrecord predicate. This is the macroexpansion for a defconstrainedrecord predicate: (clojure.core/let [t__3815__auto__ (clojure.core/defrecord TopFilter [])] (clojure.core/defn TopFilter? [r__3816__auto__] (clojure.core.contracts.constraints/= t__3815__auto__ (clojure.core/type r__3816__auto__ Perhaps we should be doing an (instance? TopFilter r) here instead? The output of `defrecord` seems to be out of date immediately when compiling. Thanks, Ambrose -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Refactoring tools
I'd really like to see a way to factor to code that uses -/- and back again. On Fri, Mar 22, 2013 at 12:01 PM, Laurent PETIT laurent.pe...@gmail.comwrote: 2013/3/22 Daniel Glauser danglau...@gmail.com I feel your pain, would love to see some Clojure refactorings. I had started working on the 1.3 branch of clojure-refactoring trying to bring it up to speed. I met with Tony (the original author of clojure-refactoring) and Phil H. at Clojure/West. Tony was very adamant that we ditch his code and start over. Currently I'm doing some experimenting with sjacket ( https://github.com/cgrand/sjacket) trying to see if we could make that work for renaming. Once I'm confident that direction will work I'm happy to throw some code up on Github. If someone beats me to it then I'd like to contribute to their project. I just created a #clojure-refactoring channel up on Freenode to make it easier to collaborate. We can rename the node once a name emerges for a new project. Please note that I've also created a project entry for the Google Summer Of Code for this : creating refactoring library + integration of it into Counterclockwise : http://dev.clojure.org/display/community/Project+Ideas#ProjectIdeas-RefactoringfeatureforCCWotherIDEs I think writing a refactoring library with more than one client in mind (e.g. a command line client as well as an IDE client) is interesting because it will help shape its API (for instance, an IDE client will usually want to offer a view of the modifications to be applied, thus refactoring can have a review step). Cheers, -- Laurent On Thursday, March 21, 2013 12:12:42 AM UTC-6, Akhil Wali wrote: A fairly new project for refactoring Clojure is clj-refactor.el. Not too much functionality yet, but supplements clojure-refactoring pretty well. clj-refactor.el will later interop with nRepl, or that's the plan I heard. That aside (and I know I'm being redundant), refactoring any Lisp is a snap with paredit-mode. It doesn't do stuff like renaming a function or exracting a var, but I've had some success in making these operations as interactive functions. On Thu, Mar 21, 2013 at 8:11 AM, Devin Walters dev...@gmail.com wrote: Yeah it sort of bums me out that clojure-refactoring has been in the ditch. There are a number of tasks to get this back into a good state. The plan right now is to take tests (which were mostly failing and using outdated dependencies) from the old-test directory and get them passing under Midje. Then, get it to play nicely with nrepl and update any elisp that needs updating to bring back the clojure-refactoring minor mode. If anyone wants to help resurrect this project: https://github.com/** devn/clojure-refactoring/tree/**clojure-1.5https://github.com/devn/clojure-refactoring/tree/clojure-1.5 your help would be appreciated. I created a new branch and started bringing old failing tests over. Feel free to drop me a pull request. Big, sweeping commits and tiny typo commits are both equally welcome. On Wednesday, March 20, 2013 at 8:22 PM, Dave Kincaid wrote: Thanks. It looks like nothing has happened on that in a year and it appears to require slime/swank. But it's a start I guess if there isn't anything else. On Wednesday, March 20, 2013 6:13:30 PM UTC-7, Devin Walters (devn) wrote: I don't think much has happened with it recently, but I used to use https://github.com/joodie/clojure-refactoringhttps://github.com/joodie/clojure-refactoring . -- '(Devin Walters) Sent from my Motorola RAZR V3 (Matte Black) On Wednesday, March 20, 2013 at 8:05 PM, Dave Kincaid wrote: I'm wondering if there are any refactoring tools around for working with Clojure projects in Emacs. There seems to be all kinds of other tools except for refactoring. I'm really looking for simple things like ways to easily rename variables, functions, namespaces, etc. That seems to be the most common thing I'm trying to do. Are there any tools out there to make it easier? Thanks, Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at http://groups.google.com/**group**/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@**googlegroups.com. For more options, visit https://groups.google.com/**grou**ps/opt_outhttps://groups.google.com/groups/opt_out . -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to
[ANN] bond, a spying stubbing library
I'd like to announce bond, a spying and stubbing library, intended for tests. https://github.com/circleci/bond Don't let the low version number scare you, we've been using it in production every day for several months. Allen -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Macro for bailout-style programming
Hi Clojurians,
I'm relatively new to the language and am trying to get used to its idioms.
One thing I'm accustomed to doing in things like java and C# is checking
values for validity and then bailing out early if they don't make sense.
For example, without this idiom in java you might do:
Object doSomething() {
Integer a = someComputation();
if(a != null) {
Integer b = anotherComputation(a, 42);
if(b != null b.intValue() = 0) {
return a / b;
}
else {
return null;
}
}
else {
return null;
}
}
... which is really only desirable if you believe in the one exit point
school of imperative programming. It is of course much better to do this:
Object doSomething() {
Integer a = someComputation();
if(a == null) { return null; }
Integer b = anotherComputation(a, 42);
if(b == null || b.intValue == 0) { return null; }
return a / b;
}
... which is much more literate. In Clojure, I have to write what is
effectively the first form:
(let [a (some-computation)]
(if (nil? a)
nil
(let [b (another-computation a 42)]
(if (or (nil? b) (= b 0))
nil
(/ a b)
While more concise, it suffers the same readability problems as the first
java version. I can easily imagine a macro to support this idiom:
(let-check [a (some-computation)
:check (nil? a) nil
b (another-computation a 42)
:check (or (nil? b) ( b 0)) nil]
(/ a b))
Which leads me to my question: does such a construct already exist? Or
perhaps am I doing it wrong? I've googled around for this, but I'm not
exactly sure what it's called.
Cheers,
Russell
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Re: Refactoring tools
I find myself doing that a lot by hand, a tool to help would be very useful. Some others that I've thought of are: - change between (fn [x] ...) and #(...) - pull sexp up to let, or introduce a new let (like introduce variable in java et. al) On Saturday, March 23, 2013 10:42:10 AM UTC+9, Alex Baranosky wrote: I'd really like to see a way to factor to code that uses -/- and back again. On Fri, Mar 22, 2013 at 12:01 PM, Laurent PETIT lauren...@gmail.comjavascript: wrote: 2013/3/22 Daniel Glauser dangl...@gmail.com javascript: I feel your pain, would love to see some Clojure refactorings. I had started working on the 1.3 branch of clojure-refactoring trying to bring it up to speed. I met with Tony (the original author of clojure-refactoring) and Phil H. at Clojure/West. Tony was very adamant that we ditch his code and start over. Currently I'm doing some experimenting with sjacket ( https://github.com/cgrand/sjacket) trying to see if we could make that work for renaming. Once I'm confident that direction will work I'm happy to throw some code up on Github. If someone beats me to it then I'd like to contribute to their project. I just created a #clojure-refactoring channel up on Freenode to make it easier to collaborate. We can rename the node once a name emerges for a new project. Please note that I've also created a project entry for the Google Summer Of Code for this : creating refactoring library + integration of it into Counterclockwise : http://dev.clojure.org/display/community/Project+Ideas#ProjectIdeas-RefactoringfeatureforCCWotherIDEs I think writing a refactoring library with more than one client in mind (e.g. a command line client as well as an IDE client) is interesting because it will help shape its API (for instance, an IDE client will usually want to offer a view of the modifications to be applied, thus refactoring can have a review step). Cheers, -- Laurent On Thursday, March 21, 2013 12:12:42 AM UTC-6, Akhil Wali wrote: A fairly new project for refactoring Clojure is clj-refactor.el. Not too much functionality yet, but supplements clojure-refactoring pretty well. clj-refactor.el will later interop with nRepl, or that's the plan I heard. That aside (and I know I'm being redundant), refactoring any Lisp is a snap with paredit-mode. It doesn't do stuff like renaming a function or exracting a var, but I've had some success in making these operations as interactive functions. On Thu, Mar 21, 2013 at 8:11 AM, Devin Walters dev...@gmail.comwrote: Yeah it sort of bums me out that clojure-refactoring has been in the ditch. There are a number of tasks to get this back into a good state. The plan right now is to take tests (which were mostly failing and using outdated dependencies) from the old-test directory and get them passing under Midje. Then, get it to play nicely with nrepl and update any elisp that needs updating to bring back the clojure-refactoring minor mode. If anyone wants to help resurrect this project: https://github.com/** devn/clojure-refactoring/tree/**clojure-1.5https://github.com/devn/clojure-refactoring/tree/clojure-1.5 your help would be appreciated. I created a new branch and started bringing old failing tests over. Feel free to drop me a pull request. Big, sweeping commits and tiny typo commits are both equally welcome. On Wednesday, March 20, 2013 at 8:22 PM, Dave Kincaid wrote: Thanks. It looks like nothing has happened on that in a year and it appears to require slime/swank. But it's a start I guess if there isn't anything else. On Wednesday, March 20, 2013 6:13:30 PM UTC-7, Devin Walters (devn) wrote: I don't think much has happened with it recently, but I used to use https://github.com/joodie/clojure-refactoringhttps://github.com/joodie/clojure-refactoring . -- '(Devin Walters) Sent from my Motorola RAZR V3 (Matte Black) On Wednesday, March 20, 2013 at 8:05 PM, Dave Kincaid wrote: I'm wondering if there are any refactoring tools around for working with Clojure projects in Emacs. There seems to be all kinds of other tools except for refactoring. I'm really looking for simple things like ways to easily rename variables, functions, namespaces, etc. That seems to be the most common thing I'm trying to do. Are there any tools out there to make it easier? Thanks, Dave -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@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+u...@**googlegroups.com For more options, visit this group at http://groups.google.com/**group**/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups
Re: Macro for bailout-style programming
2013/3/23 Russell Mull russell.m...@gmail.com Which leads me to my question: does such a construct already exist? Or perhaps am I doing it wrong? I've googled around for this, but I'm not exactly sure what it's called. http://clojuredocs.org/clojure_core/clojure.core/if-let (and its close relative when-let). Explicit checks for nil are really rare in Clojure code. -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Macro for bailout-style programming
You can get quite a long way with just if-let and and or to express
the bailout logic.
Examples I find myself using all the time:
;; fallback / default values
(or (maybe-make-value) (make-fallback-value) (error this shouldn't
happen!))
;; bailout with nil return (assumes you are running operations for side
effects, and nil return means failure)
(and (operation1) (operation2) (operation3) :success)
;; let a value, with potential defaults
(if-let [value (or passed-value (try-to-find-default-value))] )
Apart from that, I found myself writing a few macros to allow early
bailouts from computations. My favourite currently is the and-as- macro,
which works like this:
(and-as- (some-initial-value-expression) symbol
(do-something-with symbol)
(some-thing-else symbol)
(reduce some-fn symbol some-seq))
At each step, symbol is rebound to the result of the expression (like
as-) unless the result is nil, in which case the whole expression bails
out and returns nil. So it is like a cross between and as as-.
On Saturday, 23 March 2013 11:19:28 UTC+8, Russell Mull wrote:
Hi Clojurians,
I'm relatively new to the language and am trying to get used to its
idioms. One thing I'm accustomed to doing in things like java and C# is
checking values for validity and then bailing out early if they don't make
sense. For example, without this idiom in java you might do:
Object doSomething() {
Integer a = someComputation();
if(a != null) {
Integer b = anotherComputation(a, 42);
if(b != null b.intValue() = 0) {
return a / b;
}
else {
return null;
}
}
else {
return null;
}
}
... which is really only desirable if you believe in the one exit point
school of imperative programming. It is of course much better to do this:
Object doSomething() {
Integer a = someComputation();
if(a == null) { return null; }
Integer b = anotherComputation(a, 42);
if(b == null || b.intValue == 0) { return null; }
return a / b;
}
... which is much more literate. In Clojure, I have to write what is
effectively the first form:
(let [a (some-computation)]
(if (nil? a)
nil
(let [b (another-computation a 42)]
(if (or (nil? b) (= b 0))
nil
(/ a b)
While more concise, it suffers the same readability problems as the first
java version. I can easily imagine a macro to support this idiom:
(let-check [a (some-computation)
:check (nil? a) nil
b (another-computation a 42)
:check (or (nil? b) ( b 0)) nil]
(/ a b))
Which leads me to my question: does such a construct already exist? Or
perhaps am I doing it wrong? I've googled around for this, but I'm not
exactly sure what it's called.
Cheers,
Russell
--
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Re: Clojure/West 2013 videos?
Hi John, Videos will be available on InfoQ from http://www.infoq.com/clojure-west. Generally, it takes 3-4 weeks for videos to start coming out and they then arrive 1-2 per week for many months. We will probably not start working on the actual schedule for another week or two. Rich Hickey has requested that the video release of his keynote be delayed as he intends to give it at 1 or 2 other events first, so while I usually try to slot the keynotes and more buzzy talks earlier, you'll have to wait a bit longer for Rich's talk. There are sometimes grumblings about how long it takes for videos to appear (and occasionally the way in which they appear) on InfoQ. To head those comments off at the pass (not directing this at you John, just taking the opportunity!), the arrangement I have with InfoQ relies on videos being released slowly to maximize ad impressions. There are some benefits to me as well in serving as a periodic marketing purpose. The benefit to attendees and non-attendees is that the videos exist at all - without the InfoQ deal, the cost of recording, editing, and hosting videos is literally the difference between whether the conference is in the red or black. For attendees, I do really wish that I could provide talks sooner just to you and I continue to discuss options for that with InfoQ. Alex On Thursday, March 21, 2013 9:08:48 AM UTC-7, John Gabriele wrote: Are there any videos available of the talks recently given at Clojure/West? Is there a central location where these will most likely be found at some point? -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
