Re: Leiningen resource-paths
Hey,
I had this problem with a jar from Bing which is not available on maven.
You can use a local repo without any plugins or extra work for others.
Try this:
Pick a directory for your local maven repo, should be inside your git repo.
I'm using maven.
Take your jar and run
mvn deploy:deploy-file -Dfile=lib/bing-reporting.jar
-DartifactId=bing-reporting -Dversion=1.0.0 -DgroupId=smartchecker
-Dpackaging=jar -Durl=file:maven
Obviously change your arguments, the important part is: -Durl=file:maven
where maven is the directory.
Then in your project.xml
add
:repositories {local file:maven}
and depend on the jar as usual
[smartchecker/bing-reporting 1.0.0]
uberjar works as well as the rest.
Hope that helps,
/thomas
On Wednesday, July 23, 2014 12:43:38 PM UTC+2, Yura Perov wrote:
In my project.clj I include two jar files:
:resource-paths [resources/exterior_jars/forssj-optimization.jar
resources/exterior_jars/umontreal-ssj-2.5.jar]
In my main.clj I import some objects from these dependencies:
(ns myproject.main
(:import [umontreal.iro.lecuyer.probdist ChiSquareDist])
...)
So I am able to use them in main.clj:
(println Hello)
(println (. umontreal.iro.lecuyer.probdist.ChiSquareDist cdf 5 10 3.0))
(println Bye)
It perfectly works if I do lein run.
However, if I do lein uberjar these dependencies are not included to the
standalone jar file.
I know that there exist way to use local Maven repository, but I would
like to avoid this way to simplify things for anybody who wants to download
the source code and compile it quickly.
Could you advise, please, is it possible to somehow force Leiningen to
include these two resources in the final standalone jar?
Thank you.
--
You received this message because you are subscribed to the Google
Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
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/d/optout.
Re: Looking for Clojure-centric career advice/suggestions
I appreciate that Zach. The whole idea of casting a wider net is certainly something I'm open to, I may have made it appear that I'm picky when it comes to what I code in. I'm really not. I've gotten where I have simply because I've both been fortunate and driven by more unusual motives than what I perceive drive most programmers to get into programming. I really would be happy to learn just about anything that I would get paid sufficiently to keep my family going. It just seems a hard sell to others thus far. On the open source side I both have a small side project I've thought about putting out there, but it would need a bit of polishing before I think I'd feel right about putting it out there. Maybe I need to look into that more. Anyway, I very much appreciate you taking your time to respond to me Zach. The advice is very good and the emotional boost to see people respond with thoughtful and frank advice is very significant. --Ethan On Tuesday, July 22, 2014 10:55:12 PM UTC-6, Zach Oakes wrote: It sounds like you know what you want, and you're fortunate for that. I often don't, and I can tell you that greatly complicates things. At any rate, there are few things more stressful than career changes. Perhaps you are casting too small a net. Many here would love to be paid to write Clojure, but if you can't find such an opportunity, you may want to broaden your search for functional or JVM-based jobs instead. It is also very helpful to have some open source work you can show off. Coding challenges are often completely detached from reality, and open source work can sometimes offset their importance. Zach On Tuesday, July 22, 2014 9:03:13 PM UTC-4, VaedaStrike wrote: TL;DR - Got as close to a dream job as I could have wanted, after 6 months lost it. Now, with only experience in Clojure and Scala, and seemingly stuck in Utah, not sure what's the best next course of action. I'm putting this out there because of all the good experiences I've had over the years with people in the Clojure community. I very much value what you all have done and do. As best I can tell you're the salt of the earth. I'm a rather newly minted programmer. Six months on the job. I claim Clojure as my first language simply because I never saw my initial tryst with VB.NET and Visual Studio as being much more than tinkering/not really understanding. It's kind of a long and convoluted story as to how I got here, I can share it if anyone's interested, but for now let's just say that my 6 years of trying to learn Clojure in my spare time landed me my first official programming gig ... learning Scala. Being a bit tied to Utah (fiscally and family-wise at the moment) this seemed to be the best chance I had at starting my professional programming career on as close to my terms as possible, so I took it. I still like Clojure better than Scala (though I've learned a lot using Scala), but these last six months programming in a professional environment has cemented for me that I absolutely love programming. Being able to work in a code repository of functional, industry oriented code and doing real stuff that made a difference, I'll just say I never thought work could be so enjoyable, nor that I'd ever have the chance to work with so many smart and good people. Unfortunately, as an outgrowth of my newness, company politics and a change in team management I was told to look for a job elsewhere. I got right to work and applied to everything that looked anything close to what I then had. I was amazed, the first four I applied to all responded well. And as a plus they all were either using, or experimenting with either Clojure or Scala. Unfortunately, as unexpected as the job loss was for myself, it hit my wife even harder, we've not had an easy time our first 4 years of marriage on the economic side of things and emotionally she was rather paralyzed by this news. This combined in an unfortunate way with the fact that all four places quickly responded to me and, also in a difficult way, with a few decisions in how to approach the coding challenges I was given. In short, I was not terribly impressive for any of the four companies. Ironically the one company where I felt I did the worst has been the most understanding and is willing to give me a second chance after I take a couple of challenges they've given me. The problem I'm looking for help with is to know how to approach this in the best way that keeps me bringing in food for and keeping a roof over the head of my wife and son, all this hopefully without sidelining my career goals, to the extent that that's possible. While I can't go and do a hard ruling out of anything, the whole relocation idea to where jobs are would be an insanely tough sell. I'm not sure if anyone would take on a remote worker as green as myself. And here, where I'm at in Utah, is hardly
Re: Looking for Clojure-centric career advice/suggestions
The QA thing has passed my mind, and for the same reason you mentioned, being able to sneak in some clojure/clojurescript into the automation. I may need to look more into the whole contracting thing. It is a bit scary when I've got so little real world experience. On Wednesday, July 23, 2014 6:47:56 PM UTC-6, Alan Moore wrote: Many of us started out in non-development jobs and worked our way into full time coding. Tech support jobs are ok but I would focus more on QA jobs. This might allow you to do some automated testing using clojure/clojurescript and given that test code isn't given the scrutiny that dev code goes through, you might be able to justify clojure to mgmt. I started out in Product Support - a role between dev and the rest of the organization - these positions are usually only found in a very large tech organizations with a physical product (our company invented automated attendant voicemail.) As a product support engineer, I managed alpha and beta trials, wrote documentation, tested features, gave feedback to engineering, etc. This might be something you could try. A third alternative is to do contract programming/consulting. This might be a harder sell but often can get you around geographical restrictions. Travel might be involved... Good luck! Alan On Tuesday, July 22, 2014 6:03:13 PM UTC-7, VaedaStrike wrote: TL;DR - Got as close to a dream job as I could have wanted, after 6 months lost it. Now, with only experience in Clojure and Scala, and seemingly stuck in Utah, not sure what's the best next course of action. I'm putting this out there because of all the good experiences I've had over the years with people in the Clojure community. I very much value what you all have done and do. As best I can tell you're the salt of the earth. I'm a rather newly minted programmer. Six months on the job. I claim Clojure as my first language simply because I never saw my initial tryst with VB.NET and Visual Studio as being much more than tinkering/not really understanding. It's kind of a long and convoluted story as to how I got here, I can share it if anyone's interested, but for now let's just say that my 6 years of trying to learn Clojure in my spare time landed me my first official programming gig ... learning Scala. Being a bit tied to Utah (fiscally and family-wise at the moment) this seemed to be the best chance I had at starting my professional programming career on as close to my terms as possible, so I took it. I still like Clojure better than Scala (though I've learned a lot using Scala), but these last six months programming in a professional environment has cemented for me that I absolutely love programming. Being able to work in a code repository of functional, industry oriented code and doing real stuff that made a difference, I'll just say I never thought work could be so enjoyable, nor that I'd ever have the chance to work with so many smart and good people. Unfortunately, as an outgrowth of my newness, company politics and a change in team management I was told to look for a job elsewhere. I got right to work and applied to everything that looked anything close to what I then had. I was amazed, the first four I applied to all responded well. And as a plus they all were either using, or experimenting with either Clojure or Scala. Unfortunately, as unexpected as the job loss was for myself, it hit my wife even harder, we've not had an easy time our first 4 years of marriage on the economic side of things and emotionally she was rather paralyzed by this news. This combined in an unfortunate way with the fact that all four places quickly responded to me and, also in a difficult way, with a few decisions in how to approach the coding challenges I was given. In short, I was not terribly impressive for any of the four companies. Ironically the one company where I felt I did the worst has been the most understanding and is willing to give me a second chance after I take a couple of challenges they've given me. The problem I'm looking for help with is to know how to approach this in the best way that keeps me bringing in food for and keeping a roof over the head of my wife and son, all this hopefully without sidelining my career goals, to the extent that that's possible. While I can't go and do a hard ruling out of anything, the whole relocation idea to where jobs are would be an insanely tough sell. I'm not sure if anyone would take on a remote worker as green as myself. And here, where I'm at in Utah, is hardly full of companies ready to take some guy who has 6 months of Scala experience and only self-taught (and what most would consider 'hobby' experience) with Clojure. Aside from the fact that very few even know what those languages are is the fact that since I've been so focused on functional programming I'm really hard pressed to show
London Clojure/ClojureScript job
I’m looking to recruit a senior software engineer in London to work with Clojure, ClojureScript, React/Reagent, Docker, and a bunch of other equally interesting technologies. We’re not necessarily looking for Clojure/ClojureScript experience, so if you’ve been champing at the bit to get into this kind of thing, but have been unable to do so in your current role, we’d definitely be interested in talking to you. https://www.linkedin.com/jobs2/view/11032601 -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- 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/d/optout.
Re: [ClojureScript] London Clojure/ClojureScript job
Paul, You might also want to post this on London Clojurians Jobs https://groups.google.com/forum/#!forum/london-clojurian-jobs cheers, Bruce On Thu, Jul 24, 2014 at 10:45 AM, Paul Butcher p...@paulbutcher.com wrote: I’m looking to recruit a senior software engineer in London to work with Clojure, ClojureScript, React/Reagent, Docker, and a bunch of other equally interesting technologies. We’re not necessarily looking for Clojure/ClojureScript experience, so if you’ve been champing at the bit to get into this kind of thing, but have been unable to do so in your current role, we’d definitely be interested in talking to you. https://www.linkedin.com/jobs2/view/11032601 -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups ClojureScript group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescr...@googlegroups.com. Visit this group at http://groups.google.com/group/clojurescript. -- @otfrom | CTO co-founder @MastodonC | mastodonc.com See recent coverage of us in the Economist http://econ.st/WeTd2i and the Financial Times http://on.ft.com/T154BA -- 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/d/optout.
Re: [ClojureScript] London Clojure/ClojureScript job
On 24 July 2014 at 11:32:53, Bruce Durling (b...@otfrom.com) wrote: Paul, You might also want to post this on London Clojurians Jobs https://groups.google.com/forum/#!forum/london-clojurian-jobs Ah! I’ve just posted it to London Clojurians - I wasn’t aware of the separate jobs list (blush). Thanks! -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
Slight tangent: I've never used honeysql, but every time I see the name I want it to be pronounced honeysuckle. Is that the naming intent, or is it simply honey s q l? On Tuesday, July 22, 2014 8:10:16 AM UTC-4, Jonathon McKitrick wrote: Development and support seem to have slowed down. Are there newer or better choices out there with momentum right now? -- 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/d/optout.
Re: [ClojureScript] London Clojure/ClojureScript job
Although I don't live in London, it's encouraging to see how much Clojure work is on offer there! That's great Cheers, Colin On 24 July 2014 12:40, Paul Butcher p...@paulbutcher.com wrote: On 24 July 2014 at 11:32:53, Bruce Durling (b...@otfrom.com) wrote: Paul, You might also want to post this on London Clojurians Jobs https://groups.google.com/forum/#!forum/london-clojurian-jobs Ah! I’ve just posted it to London Clojurians - I wasn’t aware of the separate jobs list (blush). Thanks! -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups ClojureScript group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescr...@googlegroups.com. Visit this group at http://groups.google.com/group/clojurescript. -- 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/d/optout.
Re: [ClojureScript] London Clojure/ClojureScript job
Colin, Where do you live? I know there are other clojure jobs in Manchester and Bristol. cheers, Bruce On Thu, Jul 24, 2014 at 11:48 AM, Colin Fleming colin.mailingl...@gmail.com wrote: Although I don't live in London, it's encouraging to see how much Clojure work is on offer there! That's great Cheers, Colin On 24 July 2014 12:40, Paul Butcher p...@paulbutcher.com wrote: On 24 July 2014 at 11:32:53, Bruce Durling (b...@otfrom.com) wrote: Paul, You might also want to post this on London Clojurians Jobs https://groups.google.com/forum/#!forum/london-clojurian-jobs Ah! I’ve just posted it to London Clojurians - I wasn’t aware of the separate jobs list (blush). Thanks! -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups ClojureScript group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescr...@googlegroups.com. Visit this group at http://groups.google.com/group/clojurescript. -- @otfrom | CTO co-founder @MastodonC | mastodonc.com See recent coverage of us in the Economist http://econ.st/WeTd2i and the Financial Times http://on.ft.com/T154BA -- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
I wasn’t aware of yesql - thanks for the pointer. My concern with “write your queries in pure SQL” is increased vulnerability to SQL injection. From a quick glance at yesql, it seems likely that it does provide protection against SQL injection, but there’s nothing in the documentation (that I can find at first glance, at least) that explicitly says so. Can anyone who understands it confirm or deny? -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con On 22 July 2014 at 14:08:20, Timothy Baldridge (tbaldri...@gmail.com) wrote: Also, read the rationale behint yesql: https://github.com/krisajenkins/yesql IMO, it hits the nail on the head. ORMs are both crappy object systems and crappy DB DSLs. With a library like yesql you write your queries in pure SQL and get pure data back. Now you can fully leverage both SQL and Clojure. Timothy On Tue, Jul 22, 2014 at 6:45 AM, Jonathon McKitrick jmckitr...@gmail.com wrote: I'll keep that in mind when I decide to learn MongoDB. :-) On Tuesday, July 22, 2014 8:25:16 AM UTC-4, Robin Heggelund Hansen wrote: Don't know about SQL-based solutions, but Monger (MongoDB bindings) just released a 2.0 update and is great! kl. 14:10:16 UTC+2 tirsdag 22. juli 2014 skrev Jonathon McKitrick følgende: Development and support seem to have slowed down. Are there newer or better choices out there with momentum right now? -- 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/d/optout. -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- 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/d/optout. -- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
It passes the queries through clojure.java.jdbc, so provides the same level of protection as that, as far as I am aware. Jony On Thursday, 24 July 2014 12:08:52 UTC+1, Paul Butcher wrote: I wasn’t aware of yesql - thanks for the pointer. My concern with “write your queries in pure SQL” is increased vulnerability to SQL injection. From a quick glance at yesql, it seems likely that it does provide protection against SQL injection, but there’s nothing in the documentation (that I can find at first glance, at least) that explicitly says so. Can anyone who understands it confirm or deny? -- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
Pressed send to eagerly! Relevant code: https://github.com/krisajenkins/yesql/blob/master/src/yesql/types.clj Jony On Thursday, 24 July 2014 12:58:27 UTC+1, Jony Hudson wrote: It passes the queries through clojure.java.jdbc, so provides the same level of protection as that, as far as I am aware. Jony On Thursday, 24 July 2014 12:08:52 UTC+1, Paul Butcher wrote: I wasn’t aware of yesql - thanks for the pointer. My concern with “write your queries in pure SQL” is increased vulnerability to SQL injection. From a quick glance at yesql, it seems likely that it does provide protection against SQL injection, but there’s nothing in the documentation (that I can find at first glance, at least) that explicitly says so. Can anyone who understands it confirm or deny? -- 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/d/optout.
Re: clojure.stacktrace/root-cause VS clojure.repl/root-cause, are they redundant?
They're just different versions of the same thing, written at different times by different people, that both got merged into Clojure at different times. Speaking as the original author of clojure.stacktrace, I now think neither one of them should exist. The .printStackTrace method on an exception gives you all the same information and is more reliable. -S On Monday, July 21, 2014 7:30:17 AM UTC-4, Pierre Masci wrote: Hi, I'm learning about tools to help me debug from the REPL, and I found these two with the same name: clojure.stacktrace/root-cause clojure.repl/root-cause -- 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/d/optout.
Re: [ClojureScript] London Clojure/ClojureScript job
I live in New Zealand - the commute is a little long :-). But it's generally encouraging to see an active Clojure job market anywhere. Cheers, Colin On 24 July 2014 12:49, Bruce Durling b...@otfrom.com wrote: Colin, Where do you live? I know there are other clojure jobs in Manchester and Bristol. cheers, Bruce On Thu, Jul 24, 2014 at 11:48 AM, Colin Fleming colin.mailingl...@gmail.com wrote: Although I don't live in London, it's encouraging to see how much Clojure work is on offer there! That's great Cheers, Colin On 24 July 2014 12:40, Paul Butcher p...@paulbutcher.com wrote: On 24 July 2014 at 11:32:53, Bruce Durling (b...@otfrom.com) wrote: Paul, You might also want to post this on London Clojurians Jobs https://groups.google.com/forum/#!forum/london-clojurian-jobs Ah! I’ve just posted it to London Clojurians - I wasn’t aware of the separate jobs list (blush). Thanks! -- paul.butcher-msgCount++ Silverstone, Brands Hatch, Donington Park... Who says I have a one track mind? http://www.paulbutcher.com/ LinkedIn: http://www.linkedin.com/in/paulbutcher Skype: paulrabutcher Author of Seven Concurrency Models in Seven Weeks: When Threads Unravel http://pragprog.com/book/pb7con -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups ClojureScript group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescr...@googlegroups.com. Visit this group at http://groups.google.com/group/clojurescript. -- @otfrom | CTO co-founder @MastodonC | mastodonc.com See recent coverage of us in the Economist http://econ.st/WeTd2i and the Financial Times http://on.ft.com/T154BA -- 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/d/optout.
Re: Leiningen resource-paths
Dear Thomas Heller,
Thank you very much for your reply.
As I mentioned in my initial post (sorry, it was a bit long), I
successfully managed local Maven repository to work with Leiningen:
I know that there exist way to use local Maven repository, but I would
like to avoid this way to simplify things for anybody who wants to download
the source code and compile it quickly.
However, local Maven is an additional issue developers should care about,
and I am trying to find a way to avoid using it at least for exterior jars
I am sure we do not need to update or care about their versions.
I am trying to understand how does Leiningen process :resource-paths
directive and if there is a way to force classes from exterior jars be
included in the producing standalone jar.
Yours faithfully,
Yura
On Thursday, July 24, 2014 9:18:51 AM UTC+1, Thomas Heller wrote:
Hey,
I had this problem with a jar from Bing which is not available on maven.
You can use a local repo without any plugins or extra work for others.
Try this:
Pick a directory for your local maven repo, should be inside your git
repo. I'm using maven.
Take your jar and run
mvn deploy:deploy-file -Dfile=lib/bing-reporting.jar
-DartifactId=bing-reporting -Dversion=1.0.0 -DgroupId=smartchecker
-Dpackaging=jar -Durl=file:maven
Obviously change your arguments, the important part is: -Durl=file:maven
where maven is the directory.
Then in your project.xml
add
:repositories {local file:maven}
and depend on the jar as usual
[smartchecker/bing-reporting 1.0.0]
uberjar works as well as the rest.
Hope that helps,
/thomas
On Wednesday, July 23, 2014 12:43:38 PM UTC+2, Yura Perov wrote:
In my project.clj I include two jar files:
:resource-paths [resources/exterior_jars/forssj-optimization.jar
resources/exterior_jars/umontreal-ssj-2.5.jar]
In my main.clj I import some objects from these dependencies:
(ns myproject.main
(:import [umontreal.iro.lecuyer.probdist ChiSquareDist])
...)
So I am able to use them in main.clj:
(println Hello)
(println (. umontreal.iro.lecuyer.probdist.ChiSquareDist cdf 5 10 3.0))
(println Bye)
It perfectly works if I do lein run.
However, if I do lein uberjar these dependencies are not included to the
standalone jar file.
I know that there exist way to use local Maven repository, but I would
like to avoid this way to simplify things for anybody who wants to download
the source code and compile it quickly.
Could you advise, please, is it possible to somehow force Leiningen to
include these two resources in the final standalone jar?
Thank you.
--
You received this message because you are subscribed to the Google
Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
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/d/optout.
Re: Leiningen resource-paths
I don't quite understand the issue against using the way I described.
Assuming you keep everything in a git repo (inclucing that maven
directory), only you have to execute the mvn command ONCE, all it does it
put the file into the correct directory and generate the needed metadata
files. After that users of your code just check out everything and run lein
like normal. No extra maven commands to run or setup. IMHO its just the
same as depending on the jar via :resource-paths. As I understand it there
are other ways to setup local Maven depositories, maybe you tried it a
different way which may require more steps. IIRC its mvn deploy:deploy-file
vs install-file or something, can't remember exactly.
As for :resource-paths and how leiningen handles them: they are just
appended to the classpath, thats about it. uberjar doesn't identify jars in
there so just copies them INSIDE the uberjar so you'll have jar in a jar
which java doesnt understand.
/thomas
On Thursday, July 24, 2014 3:22:37 PM UTC+2, Yura Perov wrote:
Dear Thomas Heller,
Thank you very much for your reply.
As I mentioned in my initial post (sorry, it was a bit long), I
successfully managed local Maven repository to work with Leiningen:
I know that there exist way to use local Maven repository, but I would
like to avoid this way to simplify things for anybody who wants to download
the source code and compile it quickly.
However, local Maven is an additional issue developers should care about,
and I am trying to find a way to avoid using it at least for exterior jars
I am sure we do not need to update or care about their versions.
I am trying to understand how does Leiningen process :resource-paths
directive and if there is a way to force classes from exterior jars be
included in the producing standalone jar.
Yours faithfully,
Yura
On Thursday, July 24, 2014 9:18:51 AM UTC+1, Thomas Heller wrote:
Hey,
I had this problem with a jar from Bing which is not available on maven.
You can use a local repo without any plugins or extra work for others.
Try this:
Pick a directory for your local maven repo, should be inside your git
repo. I'm using maven.
Take your jar and run
mvn deploy:deploy-file -Dfile=lib/bing-reporting.jar
-DartifactId=bing-reporting -Dversion=1.0.0 -DgroupId=smartchecker
-Dpackaging=jar -Durl=file:maven
Obviously change your arguments, the important part is: -Durl=file:maven
where maven is the directory.
Then in your project.xml
add
:repositories {local file:maven}
and depend on the jar as usual
[smartchecker/bing-reporting 1.0.0]
uberjar works as well as the rest.
Hope that helps,
/thomas
On Wednesday, July 23, 2014 12:43:38 PM UTC+2, Yura Perov wrote:
In my project.clj I include two jar files:
:resource-paths [resources/exterior_jars/forssj-optimization.jar
resources/exterior_jars/umontreal-ssj-2.5.jar]
In my main.clj I import some objects from these dependencies:
(ns myproject.main
(:import [umontreal.iro.lecuyer.probdist ChiSquareDist])
...)
So I am able to use them in main.clj:
(println Hello)
(println (. umontreal.iro.lecuyer.probdist.ChiSquareDist cdf 5 10 3.0))
(println Bye)
It perfectly works if I do lein run.
However, if I do lein uberjar these dependencies are not included to
the standalone jar file.
I know that there exist way to use local Maven repository, but I would
like to avoid this way to simplify things for anybody who wants to download
the source code and compile it quickly.
Could you advise, please, is it possible to somehow force Leiningen to
include these two resources in the final standalone jar?
Thank you.
--
You received this message because you are subscribed to the Google
Groups Clojure group.
To post to this group, send email to clojure@googlegroups.com
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
clojure+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
---
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/d/optout.
Re: clojure.stacktrace/root-cause VS clojure.repl/root-cause, are they redundant?
Thank you Stuart, this is a very useful answer. Is there any way to access an exception older than *e? What happens to me regularly is to mistype (.printStackTrace *e), which makes me lost my previous exception. -- Pierre Masci On 24 July 2014 13:33, Stuart Sierra the.stuart.sie...@gmail.com wrote: They're just different versions of the same thing, written at different times by different people, that both got merged into Clojure at different times. Speaking as the original author of clojure.stacktrace, I now think neither one of them should exist. The .printStackTrace method on an exception gives you all the same information and is more reliable. -S On Monday, July 21, 2014 7:30:17 AM UTC-4, Pierre Masci wrote: Hi, I'm learning about tools to help me debug from the REPL, and I found these two with the same name: clojure.stacktrace/root-cause clojure.repl/root-cause -- 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/Ic-49W9ZEac/unsubscribe. 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/d/optout. -- 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/d/optout.
Re: clojure.stacktrace/root-cause VS clojure.repl/root-cause, are they redundant?
I know of no way that older exceptions than *e are automatically saved anywhere (unlike the results of previous REPL expressions, of which the last 3 are saved in *1 *2 *3). When an exception occurs, it is probably much less error-prone to type a short expression like (def e1 *e) to save the exception in e1, even if another exception occurs after that which modifies *e. Andy On Thu, Jul 24, 2014 at 6:46 AM, mascip mas...@gmail.com wrote: Thank you Stuart, this is a very useful answer. Is there any way to access an exception older than *e? What happens to me regularly is to mistype (.printStackTrace *e), which makes me lost my previous exception. -- Pierre Masci On 24 July 2014 13:33, Stuart Sierra the.stuart.sie...@gmail.com wrote: They're just different versions of the same thing, written at different times by different people, that both got merged into Clojure at different times. Speaking as the original author of clojure.stacktrace, I now think neither one of them should exist. The .printStackTrace method on an exception gives you all the same information and is more reliable. -S On Monday, July 21, 2014 7:30:17 AM UTC-4, Pierre Masci wrote: Hi, I'm learning about tools to help me debug from the REPL, and I found these two with the same name: clojure.stacktrace/root-cause clojure.repl/root-cause -- 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/Ic-49W9ZEac/unsubscribe. 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/d/optout. -- 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/d/optout. -- 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/d/optout.
Re: Leiningen resource-paths
My suggestion then: instead of storing the jar files, unzip them in their respective resource directories? Should solve the über jar problem if Leiningen isn't too strict in filtering what's copied from resources folders to final build dir. Le mercredi 23 juillet 2014, Yura Perov alfu...@gmail.com a écrit : In my project.clj I include two jar files: :resource-paths [resources/exterior_jars/forssj-optimization.jar resources/exterior_jars/umontreal-ssj-2.5.jar] In my main.clj I import some objects from these dependencies: (ns myproject.main (:import [umontreal.iro.lecuyer.probdist ChiSquareDist]) ...) So I am able to use them in main.clj: (println Hello) (println (. umontreal.iro.lecuyer.probdist.ChiSquareDist cdf 5 10 3.0)) (println Bye) It perfectly works if I do lein run. However, if I do lein uberjar these dependencies are not included to the standalone jar file. I know that there exist way to use local Maven repository, but I would like to avoid this way to simplify things for anybody who wants to download the source code and compile it quickly. Could you advise, please, is it possible to somehow force Leiningen to include these two resources in the final standalone jar? Thank you. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com javascript:_e(%7B%7D,'cvml','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 javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com'); For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com');. For more options, visit https://groups.google.com/d/optout. -- 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/d/optout.
Re: timbre logging, java libs
On Jul 23, 2014, at 7:11 PM, Jonah Benton jo...@jonah.com wrote: Sean Corfield has a great example of writing a log4j logging backend in clojure: http://corfield.org/blog/post.cfm/real-world-clojure-logging Thanx for the referral. That made me go back and look at what that code has evolved into today... Despite the copyright date, we haven't actually touched this code for well over a year now! One thing we decided to do was move just the dbappender.clj to a separate file and AOT that, minimizing the code that the compiler might transitively drag in. Then we lein install the logging appender and depend on it from our main project. The delay / require / resolve construct seems a bit of a nasty hack so feedback on how to achieve that more elegantly is welcome. We also isolated the hooks into that main project as two logging calls: one which writes structured data to MongoDB and one which writes flat data to MySQL: ;; copyright (c) 2012-2014 world singles llc ;; ;; custom log appender that writes (non-DEBUG) log data to the log table (ns worldsingles.logging.dbappender (:import org.apache.log4j.Level org.apache.log4j.spi.LoggingEvent) (:gen-class :name worldsingles.logging.DBLogger :extends org.apache.log4j.AppenderSkeleton)) (def ^:private resolve-log-structured-data Dynamically resolve worldsingles.logging.core/log-structured-data. We use delay to ensure we only require / resolve once. (delay (do (require 'worldsingles.logging.core) (resolve (symbol worldsingles.logging.core/log-structured-data) (def ^:private resolve-log-table-data Dynamically resolve worldsingles.logging.core/log-table-data. We use delay to ensure we only require / resolve once. (delay (do (require 'worldsingles.logging.core) (resolve (symbol worldsingles.logging.core/log-table-data) ;; implement void AppenderSkeleton.append(LoggingEvent event) (defn -append Append non-DEBUG events to MySQL and/or MongoDB as appropriate. [_ ^LoggingEvent event] (when (.isGreaterOrEqual (.getLevel event) Level/INFO) (let [msg (.getMessage event)] (@resolve-log-structured-data msg) (when (and (map? msg) (= (:logtype msg) action)) (@resolve-log-table-data msg) ;; implement void Appender.close() (defn -close [_]) ;; implement boolean Appender.requiresLayout() (defn -requiresLayout [_] false) Sean Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ Perfection is the enemy of the good. -- Gustave Flaubert, French realist novelist (1821-1880) signature.asc Description: Message signed with OpenPGP using GPGMail
ANN qarth 0.1.0, an OAuth library
Qarth is a simple interface to OAuth. Qarth's goal is to fix the problem of Ring/Compojure and/or Friend apps reinventing the wheel for OAuth. Qarth features zero-effort Friend integration. The interactive auth flow in friendless Qarth is two or three lines of code plus configuration. All OAuth providers use the same interface, so that you can swap providers or use multi providers (i.e. login with Facebook or Github) with little additional effort. Qarth comes with out-of-the-box support for Facebook, Github, Twitter, Google, and Yahoo!, and generic support for OAuth v2 and Scribe-Java. https://github.com/mthvedt/qarth Qarth is brand new, so please let me know about any issues or rough edges you encounter. --Mike mike.thv...@gmail.com -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
On Jul 23, 2014, at 6:34 PM, Brandon Bloom brandon.d.bl...@gmail.com wrote: SELECT ... main query stuff WHERE basic conditions AND (? OR dateUpdated = ? AND dateUpdated ? AND (? OR someColumn = ?) ... (query db basic params (boolean date-range) (or date-range (now)) (or date-range (now)) (boolean qualifier) (or qualifier )) I think you mean (not date-range) and (not qualifier)? Otherwise you'll have (true OR ...) if the params are present... But that's a very neat trick! I ran it past our DBA and he verified that the execution plan definitely short-circuits the booleans with true / false (which was my initial concern after being somewhat gunshy of 'OR' in queries due to performance problems that has caused in complex queries). Thank you Brandon! Sean Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ Perfection is the enemy of the good. -- Gustave Flaubert, French realist novelist (1821-1880) signature.asc Description: Message signed with OpenPGP using GPGMail
Re: Is Korma still a good current choice for DB backend?
I think you mean (not date-range) and (not qualifier)? Otherwise you'll have (true OR ...) if the params are present... But that's a very neat trick! Ah, yes, that's of course what I meant. Was wasting mental cycles on parameter ordering... Use named parameters people! I ran it past our DBA and he verified that the execution plan definitely short-circuits the booleans with true / false (which was my initial concern after being somewhat gunshy of 'OR' in queries due to performance problems that has caused in complex queries). You should also verify the `date LEAST(NULL, MAX(date))` approach too. I suspect that the query planner will summarily eliminate the aggregate. -- 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/d/optout.
More Clojure XML challenges
I'm really struggling to understand how to parse XML in Clojure. Here's my xml: javancss function namejava.complexity.HelloWorld.notcomplex()/name ncss2/ncss ccn1/ccn javadocs0/javadocs /function function namejava.complexity.HelloWorld.complex(int)/name ncss4/ncss ccn2/ccn javadocs0/javadocs /function ... etc I can do (xml-seq (xml/parse .. )) on this, or ( zip/xml-zip (xml/parse ... ), I don't mind which. My task is to extract all the function elements where the ncss value 3, then sum the ccn values of the remaining elements. I simply cannot figure out how to do this. All I can do is extract text of particular elements, e.g. (apply + (map read-string (zf/xml- ncss-zip :functions :function :ccn zf/text))) If anyone can help out, it would be much appreciated. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- 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/d/optout.
Is this behavior with recur and pre/post a bug?
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check if
it should be considered a bug or not. I would say yes but wanted to double
check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException: Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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/d/optout.
Re: clojure.stacktrace/root-cause VS clojure.repl/root-cause, are they redundant?
Saving *e in a def for further investigation, handy :) Cheers On 24 Jul 2014 15:48, Andy Fingerhut andy.finger...@gmail.com wrote: I know of no way that older exceptions than *e are automatically saved anywhere (unlike the results of previous REPL expressions, of which the last 3 are saved in *1 *2 *3). When an exception occurs, it is probably much less error-prone to type a short expression like (def e1 *e) to save the exception in e1, even if another exception occurs after that which modifies *e. Andy On Thu, Jul 24, 2014 at 6:46 AM, mascip mas...@gmail.com wrote: Thank you Stuart, this is a very useful answer. Is there any way to access an exception older than *e? What happens to me regularly is to mistype (.printStackTrace *e), which makes me lost my previous exception. -- Pierre Masci On 24 July 2014 13:33, Stuart Sierra the.stuart.sie...@gmail.com wrote: They're just different versions of the same thing, written at different times by different people, that both got merged into Clojure at different times. Speaking as the original author of clojure.stacktrace, I now think neither one of them should exist. The .printStackTrace method on an exception gives you all the same information and is more reliable. -S On Monday, July 21, 2014 7:30:17 AM UTC-4, Pierre Masci wrote: Hi, I'm learning about tools to help me debug from the REPL, and I found these two with the same name: clojure.stacktrace/root-cause clojure.repl/root-cause -- 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/Ic-49W9ZEac/unsubscribe. 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/d/optout. -- 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/d/optout. -- 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/Ic-49W9ZEac/unsubscribe. 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/d/optout. -- 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/d/optout.
Re: More Clojure XML challenges
On 07/24/2014 02:45 PM, Adrian O'Sullivan wrote: I'm really struggling to understand how to parse XML in Clojure. Here's my xml: javancss function namejava.complexity.HelloWorld.notcomplex()/name ncss2/ncss ccn1/ccn javadocs0/javadocs /function function namejava.complexity.HelloWorld.complex(int)/name ncss4/ncss ccn2/ccn javadocs0/javadocs /function ... etc I can do (xml-seq (xml/parse .. )) on this, or ( zip/xml-zip (xml/parse ... ), I don't mind which. My task is to extract all the function elements where the ncss value 3, then sum the ccn values of the remaining elements. I simply cannot figure out how to do this. All I can do is extract text of particular elements, e.g. (apply + (map read-string (zf/xml- ncss-zip :functions :function :ccn zf/text))) If anyone can help out, it would be much appreciated. -- Parsing XML without using XPath is (IMHO) a fool's errand... Use the excellent clojure saxon library https://github.com/pjt/saxon [clojure-saxon 0.9.4] (require '[saxon :as sax]) (def xml (sax/compile-xml javancss function namejava.complexity.HelloWorld.notcomplex()/name ncss2/ncss ccn1/ccn javadocs0/javadocs /function function namejava.complexity.HelloWorld.complex(int)/name ncss4/ncss ccn2/ccn javadocs0/javadocs /function ...)) (def sum-ncss (sax/compile-xquery sum(//function[ncss=3]/ncss))) ;;creates a function (sum-ncss xml) will return what you're looking for. Hope this helps, StanD. -- 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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
Indeed this is the case and no; I would not consider it a bug. Because you
have specified a post condition on the return value, the clojure.core/fn
macro is macroexpanding properly to support that post condition. By
recursively macroexpanding the form, you can see the what the form will
eventually look like to the
compiler: https://gist.github.com/aamedina/49b4f8caf28c8b78c26b
If you're using CIDER with Emacs, you can do this on any form by invoking
M-x cider-macroexpand-all.
Special forms, like recur, are handled by the compiler as special cases.
The semantics of Clojure's recur special form forbid it from being used
anywhere but the tail position of the body of either a fn* or loop*. As you
can see from the gist, the return value is validated by the number?
predicate before returning, or else it throws an error.
On Thursday, July 24, 2014 6:56:22 PM UTC-4, Michael O'Keefe wrote:
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check if
it should be considered a bug or not. I would say yes but wanted to double
check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException: Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
I do not know whether it is considered a bug or not, but it is definitely
caused by the postcondition handling causing the recur to be knocked out of
tail position. Here is a reference to the code:
https://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L4185-L4192
Andy
On Thu, Jul 24, 2014 at 3:56 PM, Michael O'Keefe michael.p.oke...@gmail.com
wrote:
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check if
it should be considered a bug or not. I would say yes but wanted to double
check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException: Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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/d/optout.
--
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/d/optout.
Re: Is Korma still a good current choice for DB backend?
I've been using korma in a side-project for a while and it behaves well. There sure are a bunch of PRs on their github that could be merged, not sure what's up with that. One problem I ran into last week was that I got some conflicts when trying to upgrade the versions of some dependencies. One benefit of using korma is that it uses a connection/statement pooling library underneath (in this case c3p0), something that I don't think yesql/honeysql do. -- 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/d/optout.
Re: Is Korma still a good current choice for DB backend?
That's a handy feature, which I got running on my own to save a lot of connection time in a batch process. But it's probably easy enough to get running on your own. -- Jonathon McKitrick On Thu, Jul 24, 2014 at 9:23 PM, Tony Tam ttasteri...@gmail.com wrote: I've been using korma in a side-project for a while and it behaves well. There sure are a bunch of PRs on their github that could be merged, not sure what's up with that. One problem I ran into last week was that I got some conflicts when trying to upgrade the versions of some dependencies. One benefit of using korma is that it uses a connection/statement pooling library underneath (in this case c3p0), something that I don't think yesql/honeysql do. -- 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/rDyYHfC01RQ/unsubscribe. 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/d/optout. -- 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/d/optout.
Re: More Clojure XML challenges
Great, thanks for the feedback. Will try it tomorrow. On Thursday, July 24, 2014 7:22:35 PM UTC-4, Stan wrote: On 07/24/2014 02:45 PM, Adrian O'Sullivan wrote: I'm really struggling to understand how to parse XML in Clojure. Here's my xml: javancss function namejava.complexity.HelloWorld.notcomplex()/name ncss2/ncss ccn1/ccn javadocs0/javadocs /function function namejava.complexity.HelloWorld.complex(int)/name ncss4/ncss ccn2/ccn javadocs0/javadocs /function ... etc I can do (xml-seq (xml/parse .. )) on this, or ( zip/xml-zip (xml/parse ... ), I don't mind which. My task is to extract all the function elements where the ncss value 3, then sum the ccn values of the remaining elements. I simply cannot figure out how to do this. All I can do is extract text of particular elements, e.g. (apply + (map read-string (zf/xml- ncss-zip :functions :function :ccn zf/text))) If anyone can help out, it would be much appreciated. -- Parsing XML without using XPath is (IMHO) a fool's errand... Use the excellent clojure saxon library https://github.com/pjt/saxon [clojure-saxon 0.9.4] (require '[saxon :as sax]) (def xml (sax/compile-xml javancss function namejava.complexity.HelloWorld.notcomplex()/name ncss2/ncss ccn1/ccn javadocs0/javadocs /function function namejava.complexity.HelloWorld.complex(int)/name ncss4/ncss ccn2/ccn javadocs0/javadocs /function ...)) (def sum-ncss (sax/compile-xquery sum(//function[ncss=3]/ncss))) ;;creates a function (sum-ncss xml) will return what you're looking for. Hope this helps, StanD. -- 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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
Hi Michael,
I believe your post condition should read {:post [(number? %)]}.
Thanks,
Ambrose
On Fri, Jul 25, 2014 at 6:56 AM, Michael O'Keefe michael.p.oke...@gmail.com
wrote:
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check if
it should be considered a bug or not. I would say yes but wanted to double
check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException: Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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/d/optout.
--
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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
Thank you everyone, for the replies:
- The macro expansion was helpful
- Andy, thanks for pointing out where the lines are -- very helpful
- Ambrose, both (number? %) and number? are valid post-condition forms;
the issue is that the post-condition check bumps the recur out of tail
position
I guess the real question: is this worth filing a ticket for?
Thanks all,
Michael
On Thursday, July 24, 2014 9:17:23 PM UTC-6, Ambrose Bonnaire-Sergeant
wrote:
Hi Michael,
I believe your post condition should read {:post [(number? %)]}.
Thanks,
Ambrose
On Fri, Jul 25, 2014 at 6:56 AM, Michael O'Keefe michael@gmail.com
javascript: wrote:
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check
if it should be considered a bug or not. I would say yes but wanted to
double check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException: Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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
javascript:
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/d/optout.
--
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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
On Fri, Jul 25, 2014 at 12:13 PM, Michael O'Keefe
michael.p.oke...@gmail.com wrote:
- Ambrose, both (number? %) and number? are valid post-condition
forms; the issue is that the post-condition check bumps the recur out of
tail position
I'm aware of the context, I just wanted to make sure you were aware that
{:post [number?]} is a no-op.
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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
I do not see any straightforward change to Clojure that would enable this
to work (someone else might, though). Given that adding a loop form inside
the function is a fairly straightforward workaround to the limitation, and
the difficulty of enhancing it to avoid the limitation, I would personally
be a bit surprised to see such a ticket accepted.
It doesn't cost anything but some time to create one, though.
Andy
On Thu, Jul 24, 2014 at 9:13 PM, Michael O'Keefe michael.p.oke...@gmail.com
wrote:
Thank you everyone, for the replies:
- The macro expansion was helpful
- Andy, thanks for pointing out where the lines are -- very helpful
- Ambrose, both (number? %) and number? are valid post-condition
forms; the issue is that the post-condition check bumps the recur out of
tail position
I guess the real question: is this worth filing a ticket for?
Thanks all,
Michael
On Thursday, July 24, 2014 9:17:23 PM UTC-6, Ambrose Bonnaire-Sergeant
wrote:
Hi Michael,
I believe your post condition should read {:post [(number? %)]}.
Thanks,
Ambrose
On Fri, Jul 25, 2014 at 6:56 AM, Michael O'Keefe michael@gmail.com
wrote:
Hello All,
I encountered the following behavior in Clojure 1.6 and wanted to check
if it should be considered a bug or not. I would say yes but wanted to
double check on the list first.
Here's a minimal test case that elicited the error:
(defn f
[xs acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
(f [1 2 3 4] 0) = 10
Now, if I want to add pre/post conditions, the following happens:
(defn g
[xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc
= this fails to compile with CompilerException
java.lang.UnsupportedOperationException:
Can only recur from tail position
In fact, it is only the post-condition that triggers the issue.
My guess would be that the recur statement is being knocked out of tail
position by the mechanism for handling the post-condition assertion. It can
be fixed in the code by adding an explicit loop:
(defn g2 [xs acc]
{:pre [(or (nil? xs) (sequential? xs)) (number? acc)]
:post [number?]}
(loop [xs xs
acc acc]
(if (nil? xs)
acc
(recur (next xs) (+ (first xs) acc)
Thanks,
Michael O'Keefe
--
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=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/d/optout.
--
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/d/optout.
--
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/d/optout.
Re: Is this behavior with recur and pre/post a bug?
Ambrose, thanks -- I was NOT aware of that. Sorry I misunderstood your
original.
Andy, good advice and I agree. Thanks. I'll think on it then.
Cheers,
Michael
On Thursday, July 24, 2014 10:20:57 PM UTC-6, Ambrose Bonnaire-Sergeant
wrote:
On Fri, Jul 25, 2014 at 12:13 PM, Michael O'Keefe michael@gmail.com
javascript: wrote:
- Ambrose, both (number? %) and number? are valid post-condition
forms; the issue is that the post-condition check bumps the recur out of
tail position
I'm aware of the context, I just wanted to make sure you were aware that
{:post [number?]} is a no-op.
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/d/optout.
