Re: how do I use data.priority-map
thanks sean for your reply about how to use priority-map in my project...
However, I am curious as to how to find out as to what is the latest version
for a given library.. for example data.finger-tree that is available..
Sunil.
On Thu, Sep 29, 2011 at 5:46 AM, Sean Corfield wrote:
> No builds have yet been released to Maven.
>
> You can, however, use the snapshot from Sonatype. Add the following to
> project.clj:
>
> :repositories {"sonatype-oss-public"
> "https://oss.sonatype.org/content/groups/public/"}
>
> That causes Leiningen to search the Sonatype repository.
>
> Then add this dependency:
>
> [org.clojure/data.priority-map "0.0.1-SNAPSHOT"]
>
> That should get you going.
>
> Sean
>
> On Wed, Sep 28, 2011 at 3:21 PM, Sunil S Nandihalli
> wrote:
> > after I posted the question .. I found this discussion . So, I guess it
> is
> > not ready for prime-time yet .. (may be I am wrong)
>
> --
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Re: how do I use data.priority-map
answering my own question ...
aah .. I can just go to the sonatype repository and findout .. thanks
Sunil.
On Thu, Sep 29, 2011 at 5:46 AM, Sean Corfield wrote:
> No builds have yet been released to Maven.
>
> You can, however, use the snapshot from Sonatype. Add the following to
> project.clj:
>
> :repositories {"sonatype-oss-public"
> "https://oss.sonatype.org/content/groups/public/"}
>
> That causes Leiningen to search the Sonatype repository.
>
> Then add this dependency:
>
> [org.clojure/data.priority-map "0.0.1-SNAPSHOT"]
>
> That should get you going.
>
> Sean
>
> On Wed, Sep 28, 2011 at 3:21 PM, Sunil S Nandihalli
> wrote:
> > after I posted the question .. I found this discussion . So, I guess it
> is
> > not ready for prime-time yet .. (may be I am wrong)
>
> --
> 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
>
--
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Re: how do I use data.priority-map
On Thu, Sep 29, 2011 at 12:11 AM, Sunil S Nandihalli wrote: > answering my own question ... > aah .. I can just go to the sonatype repository and findout .. thanks If something isn't listed on Maven Central here http://search.maven.org/#search%7Cga%7C1%7Corg.clojure then you'll have to dig around in Sonatype. data.finger-tree 0.0.1 is on Maven Central tho'... I'll shake the tree to encourage releases to Maven for the rest of the contrib libraries. I could/should make a release of data.priority-map... I helped Mark get his three contrib libraries migrated and setup and the only reason I haven't made Maven releases is because math.numeric-tower currently only runs on Clojure 1.3.0 due to a reference to BigInt. -- Sean A Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ World Singles, LLC. -- http://worldsingles.com/ Railo Technologies, Inc. -- http://www.getrailo.com/ "Perfection is the enemy of the good." -- Gustave Flaubert, French realist novelist (1821-1880) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: how do I use data.priority-map
On Thu, Sep 29, 2011 at 2:39 AM, Sean Corfield wrote: > I'll shake the tree to encourage releases to Maven for the rest of the > contrib libraries. I could/should make a release of > data.priority-map... I helped Mark get his three contrib libraries > migrated and setup and the only reason I haven't made Maven releases > is because math.numeric-tower currently only runs on Clojure 1.3.0 due > to a reference to BigInt. I just cut 0.0.1 releases of data.priority-map and math.combinatorics so those should appear on Maven Central "soon" (within 24 hours, possibly sooner). I'll do math.numeric-tower once it passes Clojure 1.2.x tests. -- Sean A Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ World Singles, LLC. -- http://worldsingles.com/ Railo Technologies, Inc. -- http://www.getrailo.com/ "Perfection is the enemy of the good." -- Gustave Flaubert, French realist novelist (1821-1880) -- 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
pattern matching in clojure
Hi! Is there any way to define function with pattern matching in function signature as it is in haskell? Bye! -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
Hi, core.match might be what you're looking for. (defn append [a b] (match [a b] [[] _] b [[x & as] _] (append as (cons x b))) (defn or [b1 b2] (match [b1 b2] [true _] true [_ true] true :else false)) https://github.com/clojure/core.match Thanks, Ambrose On Thu, Sep 29, 2011 at 6:03 PM, Michael Jaaka wrote: > Hi! > > Is there any way to define function with pattern matching in function > signature as it is in haskell? > > Bye! > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
producing Blub code and vv.
Hi, I'd like to check the interest in the community for a comprehensive Clojure library/framework/whathaveyou that helps produce Java/Python/ Ruby/... a.k.a. "Blub" (http://www.paulgraham.com/avg.html) code, i.e. instead of writing a Clojure program that e.g. produces web pages, writing a Clojure program that produces a Blub program that produces web pages. A Blub program in idiomatic, maintainable, efficient Blub code that is. This is obviously to enable cooperation on shared domain knowledge/"business logic" across communities with mixed Clojure/Blub language preferences that I expect will continue to exist for decades. Full cooperation would then also require the framework to produce Clojure code that embodies functionality embodied in Blub code. I'd expect that bit to be harder to realize but also more valuable, as it would allow drawing not only on the body of work done in Blub for reasons of preference but also on legacy code from the dark ages when there was no Clojure. I'm asking this especially in light of the upcoming Clojure Conj where there would be an opportunity to discuss this complex subject in a "high bandwidth" :) kind of way. Searching this group I haven't found much along those lines other than isolated problems being tackled -- the question here rather being: What's the furthest the the envelope can be pushed in terms of co- opting the Blub world? Hank -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
Additionally to core.match there is also matchure [1] which comes with a defn-match that can be used like this: (defn-match choose ([_ 0] 1) ([0 _] 0) ([?n ?k] (+ (choose (dec n) (dec k)) (choose (dec n) k This makes defining functions fairly close to what you're used from Haskell. [1] https://github.com/dcolthorp/matchure Christian On Thu, Sep 29, 2011 at 12:03 PM, Michael Jaaka wrote: > Hi! > > Is there any way to define function with pattern matching in function > signature as it is in haskell? > > Bye! > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Shameless self promotion - JavaOne
That would be great! Thanks in advance, boris 2011/9/29 Dennis : > I am not sure to what extent there will be recording. However, I can > send you my slides after the presentation. > > -- Dennis > > On Wed, Sep 28, 2011 at 12:47 AM, Boris Mühmer > wrote: >> Will there be any slides or maybe even a recording of this session? >> >> I would be very interested in this talk, but I can't go there... >> >> >> Regards, >> Boris >> >> >> 2011/9/27 Dennis : >>> Hey guys, >>> >>> I will be giving a talk at JavaOne (it is Clojure related). Here is >>> the information. >>> >>> Title: Monitoring a Large-Scale Infrastructure with Clojure >>> Time Tuesday, 07:30 PM, Parc 55 - Embarcadero >>> Length 45 Minutes >>> Abstract: Monitoring a large infrastructure brings unique >>> challenges >>> that require blending development and operations concepts. This >>> session discusses how Dell Inc. used Clojure to develop a >>> data-flow-based monitoring system that stores, evaluates, and acts on >>> hundreds of thousands of metrics. >>> >>> It covers >>> • Real-world applications of Clojure's parallel programming constructs >>> to take advantage of multiple cores available in today's systems >>> • Using Clojure's homoiconic nature to create DSLs >>> • Taking advantage of Clojure running on the JVM to use the Java ecosystem >>> • How DevOps takes advantage of the JVM dynamic languages to develop >>> new monitoring tools >>> Track Emerging Languages, Tools, and Techniques >>> Optional Track The Java Frontier >>> >>> -- Dennis >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to clojure@googlegroups.com >>> Note that posts from new members are moderated - please be patient with >>> your first post. >>> To unsubscribe from this group, send email to >>> clojure+unsubscr...@googlegroups.com >>> For more options, visit this group at >>> http://groups.google.com/group/clojure?hl=en >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with your >> first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
And if you'd actually like a little bit of sugar so that it's really at the level of the function definition - patch welcome! :) David On Thu, Sep 29, 2011 at 6:46 AM, Ambrose Bonnaire-Sergeant < abonnaireserge...@gmail.com> wrote: > Hi, > > core.match might be what you're looking for. > > (defn append [a b] > (match [a b] > [[] _] b > [[x & as] _] (append as (cons x b))) > > (defn or [b1 b2] > (match [b1 b2] > [true _] true > [_ true] true > :else false)) > > > https://github.com/clojure/core.match > > Thanks, > Ambrose > > On Thu, Sep 29, 2011 at 6:03 PM, Michael Jaaka < > michael.ja...@googlemail.com> wrote: > >> Hi! >> >> Is there any way to define function with pattern matching in function >> signature as it is in haskell? >> >> Bye! >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en > > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
matchure does some funny things to deal with code size, including generating internals fns which will break recur. core.match avoided this problem until quite recently. We've now added backtracking to control code size for certain kinds of pattern matches. However this also conflicts w/ recur, you've reminded me that we need to use the old compilation strategy in the presence of recur :) David On Thu, Sep 29, 2011 at 7:08 AM, Christian Pohlmann < chr.pohlm...@googlemail.com> wrote: > Additionally to core.match there is also matchure [1] which comes with > a defn-match that can be used like this: > > (defn-match choose > ([_ 0] 1) > ([0 _] 0) > ([?n ?k] (+ (choose (dec n) (dec k)) (choose (dec n) k > > This makes defining functions fairly close to what you're used from > Haskell. > > [1] https://github.com/dcolthorp/matchure > > Christian > > > On Thu, Sep 29, 2011 at 12:03 PM, Michael Jaaka > wrote: > > Hi! > > > > Is there any way to define function with pattern matching in function > > signature as it is in haskell? > > > > Bye! > > > > -- > > You received this message because you are subscribed to the Google > > Groups "Clojure" group. > > To post to this group, send email to clojure@googlegroups.com > > Note that posts from new members are moderated - please be patient with > your first post. > > To unsubscribe from this group, send email to > > clojure+unsubscr...@googlegroups.com > > For more options, visit this group at > > http://groups.google.com/group/clojure?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > -- 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
Learning clojure - comments on my function?
Hi All, I am just learning clojure and I've written a function to split a list (see docstring for details). I was wondering if any of you experienced hands could take a look at it and comment. I've never used lisp or a functional language before so I was wondering if I was doing it right or if there is a better way. Anyway here is the function: (defn split-zero "Split a collection at its zero values into a list of lists. Multiple zeros are treated as one. The order of elements in each inner list is maintained but the order of inner lists in the result may be changed. e.g. (split-zero '(1 2 3 0 4 5 6 0 7 8 9)) -> ((7 8 9) (4 5 6) (1 2 3))" [ls] ((fn [ls wip ans] (if (empty? ls) (if (empty? wip) ans (conj ans (list* wip))) (if (zero? (first ls)) (if (empty? wip) (recur (next ls) [] ans) (recur (next ls) [] (conj ans (list* wip (recur (next ls) (conj wip (first ls)) ans ls [] nil)) Thanks, Peter -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
ClojureScript? David On Thu, Sep 29, 2011 at 6:39 AM, Hank wrote: > Hi, > > I'd like to check the interest in the community for a comprehensive > Clojure library/framework/whathaveyou that helps produce Java/Python/ > Ruby/... a.k.a. "Blub" (http://www.paulgraham.com/avg.html) code, i.e. > instead of writing a Clojure program that e.g. produces web pages, > writing a Clojure program that produces a Blub program that produces > web pages. A Blub program in idiomatic, maintainable, efficient Blub > code that is. > > This is obviously to enable cooperation on shared domain > knowledge/"business logic" across communities with mixed Clojure/Blub > language preferences that I expect will continue to exist for decades. > Full cooperation would then also require the framework to produce > Clojure code that embodies functionality embodied in Blub code. I'd > expect that bit to be harder to realize but also more valuable, as it > would allow drawing not only on the body of work done in Blub for > reasons of preference but also on legacy code from the dark ages when > there was no Clojure. > > I'm asking this especially in light of the upcoming Clojure Conj where > there would be an opportunity to discuss this complex subject in a > "high bandwidth" :) kind of way. > > Searching this group I haven't found much along those lines other than > isolated problems being tackled -- the question here rather being: > What's the furthest the the envelope can be pushed in terms of co- > opting the Blub world? > > Hank > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Learning clojure - comments on my function?
First of all, you should switch from ((fn [ls wip ans] ...) ls [] nil) to (loop [ls ls wip [] ans nil] ...) Read about it here: http://clojure.org/special_forms Using higher-order functions, you could do: (defn split-zero [coll] (if (seq coll) (let [divided (partition-by zero? coll)] (take-nth 2 (if (zero? (ffirst divided)) (rest divided) divided) Step by step: (partition-by zero? coll) '(1 2 3 0 4 5 6 0 7 8 9) -> '((1 2 3) (0) (4 5 6) (0) (7 8 9)) (if (zero? (ffirst divided)) (rest divided) divided) If the first partition consists of zeroes, skip it. (take-nth 2 ...) '(3 1 7 3 0) -> '(3 7 0) On Thu, Sep 29, 2011 at 1:35 PM, Peter Hull wrote: > Hi All, > I am just learning clojure and I've written a function to split a list (see > docstring for details). I was wondering if any of you experienced hands > could take a look at it and comment. I've never used lisp or a functional > language before so I was wondering if I was doing it right or if there is a > better way. Anyway here is the function: > > (defn split-zero > "Split a collection at its zero values into a list of lists. >Multiple zeros are treated as one. >The order of elements in each inner list is maintained but >the order of inner lists in the result may be changed. >e.g. (split-zero '(1 2 3 0 4 5 6 0 7 8 9)) >-> ((7 8 9) (4 5 6) (1 2 3))" > [ls] ((fn [ls wip ans] > (if (empty? ls) > (if (empty? wip) ans (conj ans (list* wip))) > (if (zero? (first ls)) > (if (empty? wip) > (recur (next ls) [] ans) > (recur (next ls) [] (conj ans (list* wip > (recur (next ls) (conj wip (first ls)) ans ls [] nil)) > > Thanks, > Peter > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Learning clojure - comments on my function?
You probably want something like (defn split-zero [ls] (filter #(not= (first %) 0) (partition-by zero? ls))) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
On Thu, Sep 29, 2011 at 4:16 PM, Ambrose Bonnaire-Sergeant wrote: > (defn append [a b] > (match [a b] > [[] _] b > [[x & as] _] (append as (cons x b))) > (defn or [b1 b2] > (match [b1 b2] > [true _] true > [_ true] true > :else false)) Does the above code work? Regards, BG -- Baishampayan Ghose b.ghose at gmail.com -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
append is missing a closing paren. It should work. Ambrose On Thu, Sep 29, 2011 at 8:21 PM, Baishampayan Ghose wrote: > On Thu, Sep 29, 2011 at 4:16 PM, Ambrose Bonnaire-Sergeant > wrote: > > (defn append [a b] > > (match [a b] > > [[] _] b > > [[x & as] _] (append as (cons x b))) > > (defn or [b1 b2] > > (match [b1 b2] > > [true _] true > > [_ true] true > > :else false)) > > Does the above code work? > > Regards, > BG > > -- > Baishampayan Ghose > b.ghose at 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 post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
On Thu, Sep 29, 2011 at 5:57 PM, Ambrose Bonnaire-Sergeant wrote: > append is missing a closing paren. > It should work. Where does `match` come from? I couldn't find it anywhere. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
It's part of core.match. clojure.core.match.core/match https://github.com/clojure/core.match Thanks, Ambrose On Thu, Sep 29, 2011 at 8:28 PM, Baishampayan Ghose wrote: > On Thu, Sep 29, 2011 at 5:57 PM, Ambrose Bonnaire-Sergeant > wrote: > > append is missing a closing paren. > > It should work. > > Where does `match` come from? I couldn't find it anywhere. > > Regards, > BG > > -- > Baishampayan Ghose > b.ghose at 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 post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
On Thu, Sep 29, 2011 at 6:00 PM, Ambrose Bonnaire-Sergeant wrote: > It's part of core.match. > clojure.core.match.core/match > https://github.com/clojure/core.match Sorry Ambrose, I was so stupid, I was looking at core.logic :-) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
In this exchange I've written core.logic when I meant core.match about 4 times xD Ambrose On Thu, Sep 29, 2011 at 8:33 PM, Baishampayan Ghose wrote: > On Thu, Sep 29, 2011 at 6:00 PM, Ambrose Bonnaire-Sergeant > wrote: > > It's part of core.match. > > clojure.core.match.core/match > > https://github.com/clojure/core.match > > Sorry Ambrose, I was so stupid, I was looking at core.logic :-) > > Regards, > BG > > -- > Baishampayan Ghose > b.ghose at 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 post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
In core.logic you do have matche, which is conceptually similar. David On Thu, Sep 29, 2011 at 8:33 AM, Baishampayan Ghose wrote: > On Thu, Sep 29, 2011 at 6:00 PM, Ambrose Bonnaire-Sergeant > wrote: > > It's part of core.match. > > clojure.core.match.core/match > > https://github.com/clojure/core.match > > Sorry Ambrose, I was so stupid, I was looking at core.logic :-) > > Regards, > BG > > -- > Baishampayan Ghose > b.ghose at 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 post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: pattern matching in clojure
On Thu, Sep 29, 2011 at 6:06 PM, David Nolen wrote: > In core.logic you do have matche, which is conceptually similar. Right, I knew about `matche` and that added to all the confusion. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Learning clojure - comments on my function?
Thank you, both! I guessed there would be a neater solution (I wasn't aware of partition-by) Pete -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Mauve has more RAM? :) On Sep 29, 9:46 pm, David Nolen wrote: > ClojureScript? > > David > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Are futures garbage-collected?
Thanks to everyone for the helpful replies. I've been using futures in this manner for a long time now and they work fine, but I wanted to make sure this is the specified behavior. --J. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Shameless self promotion - JavaOne
Looks good, Dennis. Similarly, I'll be giving a talk at Java One on Clojure; I'll do my best to warm up the crowd for you. :-) Session ID: 25060 Session Title: Real-Time Hot Code Deployment with Clojure Venue / Room: Parc 55 - Embarcadero Date and Time: 10/4/11, 13:30 - 14:30 AbstractFew things help boost developer productivity more than speeding the delivery of code into running environments. Dynamic languages help by shortening development lifecycles and simplifying application models, and tools provide similar benefits for static languages such as Java and Scala, but these options are fundamentally partial workarounds. This session details how Clojure—a dynamic, compiled JVM language—facilitates hot code deployment that completely eliminates turnaround time for developing locally, updating remote production servers, and even modifying code running on mobile devices. The presentation uses an open source, IDE-agnostic tool chain to demonstrate these capabilities and how they accelerate common development practices. Perhaps old hat for many here, but hopefully will be a good introduction to a compelling advantage Clojure offers. Cheers, - Chas On Sep 27, 11:50 am, Dennis wrote: > Hey guys, > > I will be giving a talk at JavaOne (it is Clojure related). Here is > the information. > > Title: Monitoring a Large-Scale Infrastructure with Clojure > Time Tuesday, 07:30 PM, Parc 55 - Embarcadero > Length 45 Minutes > Abstract: Monitoring a large infrastructure brings unique > challenges > that require blending development and operations concepts. This > session discusses how Dell Inc. used Clojure to develop a > data-flow-based monitoring system that stores, evaluates, and acts on > hundreds of thousands of metrics. > > It covers > • Real-world applications of Clojure's parallel programming constructs > to take advantage of multiple cores available in today's systems > • Using Clojure's homoiconic nature to create DSLs > • Taking advantage of Clojure running on the JVM to use the Java ecosystem > • How DevOps takes advantage of the JVM dynamic languages to develop > new monitoring tools > Track Emerging Languages, Tools, and Techniques > Optional Track The Java Frontier > > -- Dennis -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: break-on-gaps - just curious if there is a more idiomatic way to do this
Thanks. That's helps me think about when/how to use lazy-seq On Sep 28, 2:00 pm, Nathan Sorenson wrote: > If you were feeling so inclined, you could structure this as a lazy sequence > (like 'partition' does) > > (defn lazy-break > [coll] > (letfn [(break-paired [pairs] > (lazy-seq > (when-let [s (seq pairs)] > (let [p (doall (take-while (fn [[a b]] (= (inc a) b)) pairs)) > cutpoint (count p)] > (cons (concat p [(nth pairs cutpoint)]) > (break-paired (drop (inc cutpoint) pairs)))] > (map #(map first %) (break-paired (map vector coll (rest coll)) > > user> (take 2 (lazy-break (concat (range 4) (range 3) (range > ((0 1 2 3) (0 1 2)) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: break-on-gaps - just curious if there is a more idiomatic way to do this
Nice. Also this makes me think that my clojure intuitions are getting better. On Sep 28, 3:07 pm, Alan Malloy wrote: > I wrote a generalized version of this called partition-between, which > you can see > athttps://github.com/flatland/useful/blob/develop/src/useful/seq.clj#L181 > if you're interested. Using that as a primitive, your break-on-gaps > function is simple: > > user> (partition-between (fn [[a b]] (not= a (dec b))) [1 2 3 5 6 7 8 > 10 20 21]) > ([1 2 3] [5 6 7 8] [10] [20 21]) > > On Sep 28, 11:39 am,qhfgva wrote: > > > > > > > > > I've been working on problems from "Programming Challenges" (Skiena) > > to learn clojure. As part of a problem I developed the following > > routine. I sort of scare myself how natural thinking in reduce is > > getting, but I was wondering if there is a more clever/idiomatic way > > to solve this problem. > > > (defn break-on-gaps [minutes] > > (reduce (fn [acc x] > > (if (empty? acc) > > [[x]] > > (if (= (inc (last (last acc))) x) > > (conj (vec (butlast acc)) > > (conj (last acc) x)) > > (conj acc [x] > > [] > > minutes)) > > > user=> (break-on-gaps [1 2 3 5 6 7 8 10 20 21]) > > [[1 2 3] [5 6 7 8] [10] [20 21]] -- 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
Using Clojure to Generate Java Source?
I'm in a bit of a bind-- I've written some really nice Clojure code for dealing with Genomic sequences that works as well or better than the reference implementation we currently use where I work. However, the the hierarchy has recently changed and my new boss is requiring me to have all code in Java (eg. interop is not an option since he wants the source to be pure Java.) Is there any way to prevent my head exploding from hand-translating my Clojure code into Java? I'm sure it's possible to generate Java source since we heard Rich's amusing anecdote about using Clojure to write reams of Java boilerplate instead of doing himself. Is there a precedent or even an existing library for translation from Clojure into Java source though? I'd like to be able to use the code I've got without a long, painful devolution. More importantly, I want to be able to continue developing in Clojure and just compile it to Java source and check that in. Thanks, Dennis -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Using Clojure to Generate Java Source?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 compile to java class, decompile to java source. works in theory, until someone actually looks at the source ;) btw, your new boss is ... not the type of boss that would keep me from looking for a new job. Am 29.09.2011 20:09, schrieb Dennis Crenshaw: > I'm in a bit of a bind-- I've written some really nice Clojure code > for dealing with Genomic sequences that works as well or better > than the reference implementation we currently use where I work. > However, the the hierarchy has recently changed and my new boss is > requiring me to have all code in Java (eg. interop is not an option > since he wants the source to be pure Java.) Is there any way to > prevent my head exploding from hand-translating my Clojure code > into Java? > > I'm sure it's possible to generate Java source since we heard > Rich's amusing anecdote about using Clojure to write reams of Java > boilerplate instead of doing himself. Is there a precedent or even > an existing library for translation from Clojure into Java source > though? I'd like to be able to use the code I've got without a > long, painful devolution. More importantly, I want to be able to > continue developing in Clojure and just compile it to Java source > and check that in. > > Thanks, Dennis > > -- 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 - -- -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.14 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJOhLd6AAoJENRtux+h35aGCe4QANMbLKUwasgC5Ue5O+Ad5ozt Pl0zWDbS29iPYP7NtafPltBUxypZrkDWlT/8mbZW5bkCe2R5V/JyzVO34eIZsUCs AhcC7TlIXTl8UQQJVC+zKwZ/S6URHApEKI097rxJVGqKEDqjXS7tytqKXYM4hrOp H1Iu8SQyGdDgEOjL8VQHTGiPeovM6lzW1evK/iqvlUlgDmD5B11ectI9tSrITPn9 IAl+7RK7FcM7B5PESY+GKG4zbitEy4M1UKNQUq1XaCwx2qWERQMhvNrujjUCO9jX m+na6X5u7Cl/xBxxl52n053e/zQjJK4rdLAgm6K1x1b/t7kofrf+3D9BLCYdr9GY /1mYhOm1THXgNCYfZYMbDzEwKSy3molnCbPr7pryqj9IJjJ5fEPAfXmSZa7ESZSm MeEPKnDEhfKSV+NvuQ9srZL0XrN/YDJ+IIckAc1hoAGKUmH4bf+kkhWkD2+cgft2 PO3DG+5kaXy0rc3lP1XAntTQQufIfTwOu69DFPVhOTKHRaWCn/SxDlW2/D3CytU5 MFc59ZKON6sz3L04/9ihnMonW1E/VYl2dvEL/v67s+hkDfc/la4fNpyDP0jnOa6b didf/CLOoXDf96gkLe87R9WPdfdMgjrWvq+oz+T1JmUN7mCuwb0ha13JrnxBqLIJ bBwNY9PsIP0B9nJWZCgs =C3mv -END PGP SIGNATURE- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Shameless self promotion - JavaOne
Is the location of the meetup anywhere close to the conference? On Wednesday, September 28, 2011, Sean Corfield wrote: > The Bay Area Clojure User Group is scheduled to meet on Thursday > October 6th. Any out of town Clojurians who would be around for that > meetup and might be persuaded to come and talk about what they're > doing with Clojure? > > http://www.meetup.com/The-Bay-Area-Clojure-User-Group/ > > Sean > > On Tue, Sep 27, 2011 at 8:50 AM, Dennis wrote: >> I will be giving a talk at JavaOne (it is Clojure related). Here is >> the information. >> >> Title: Monitoring a Large-Scale Infrastructure with Clojure >> Time Tuesday, 07:30 PM, Parc 55 - Embarcadero >> Length 45 Minutes >> Abstract: Monitoring a large infrastructure brings unique challenges >> that require blending development and operations concepts. This >> session discusses how Dell Inc. used Clojure to develop a >> data-flow-based monitoring system that stores, evaluates, and acts on >> hundreds of thousands of metrics. >> >> It covers >> • Real-world applications of Clojure's parallel programming constructs >> to take advantage of multiple cores available in today's systems >> • Using Clojure's homoiconic nature to create DSLs >> • Taking advantage of Clojure running on the JVM to use the Java ecosystem >> • How DevOps takes advantage of the JVM dynamic languages to develop >> new monitoring tools >> Track Emerging Languages, Tools, and Techniques >> Optional Track The Java Frontier > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Using Clojure to Generate Java Source?
Oups, you just have been dilberted in a non creative dimension :) I would go for the bytecode decompilation option, most probably your new boss will not even notice according to the Dilbert workplace rules. He most probably pushes is desk away when his mouse hits the border of his mouse pad hopping to correct the problem. Luc On Thu, 29 Sep 2011 20:22:50 +0200 Dennis Haupt wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > compile to java class, decompile to java source. works in theory, > until someone actually looks at the source ;) > > btw, your new boss is ... not the type of boss that would keep me from > looking for a new job. > > Am 29.09.2011 20:09, schrieb Dennis Crenshaw: > > I'm in a bit of a bind-- I've written some really nice Clojure code > > for dealing with Genomic sequences that works as well or better > > than the reference implementation we currently use where I work. > > However, the the hierarchy has recently changed and my new boss is > > requiring me to have all code in Java (eg. interop is not an option > > since he wants the source to be pure Java.) Is there any way to > > prevent my head exploding from hand-translating my Clojure code > > into Java? > > > > I'm sure it's possible to generate Java source since we heard > > Rich's amusing anecdote about using Clojure to write reams of Java > > boilerplate instead of doing himself. Is there a precedent or even > > an existing library for translation from Clojure into Java source > > though? I'd like to be able to use the code I've got without a > > long, painful devolution. More importantly, I want to be able to > > continue developing in Clojure and just compile it to Java source > > and check that in. > > > > Thanks, Dennis > > > > -- 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 > > > - -- > > -BEGIN PGP SIGNATURE- > Version: GnuPG v2.0.14 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQIcBAEBAgAGBQJOhLd6AAoJENRtux+h35aGCe4QANMbLKUwasgC5Ue5O+Ad5ozt > Pl0zWDbS29iPYP7NtafPltBUxypZrkDWlT/8mbZW5bkCe2R5V/JyzVO34eIZsUCs > AhcC7TlIXTl8UQQJVC+zKwZ/S6URHApEKI097rxJVGqKEDqjXS7tytqKXYM4hrOp > H1Iu8SQyGdDgEOjL8VQHTGiPeovM6lzW1evK/iqvlUlgDmD5B11ectI9tSrITPn9 > IAl+7RK7FcM7B5PESY+GKG4zbitEy4M1UKNQUq1XaCwx2qWERQMhvNrujjUCO9jX > m+na6X5u7Cl/xBxxl52n053e/zQjJK4rdLAgm6K1x1b/t7kofrf+3D9BLCYdr9GY > /1mYhOm1THXgNCYfZYMbDzEwKSy3molnCbPr7pryqj9IJjJ5fEPAfXmSZa7ESZSm > MeEPKnDEhfKSV+NvuQ9srZL0XrN/YDJ+IIckAc1hoAGKUmH4bf+kkhWkD2+cgft2 > PO3DG+5kaXy0rc3lP1XAntTQQufIfTwOu69DFPVhOTKHRaWCn/SxDlW2/D3CytU5 > MFc59ZKON6sz3L04/9ihnMonW1E/VYl2dvEL/v67s+hkDfc/la4fNpyDP0jnOa6b > didf/CLOoXDf96gkLe87R9WPdfdMgjrWvq+oz+T1JmUN7mCuwb0ha13JrnxBqLIJ > bBwNY9PsIP0B9nJWZCgs > =C3mv > -END PGP SIGNATURE- > -- Luc P. The rabid Muppet -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Shameless self promotion - JavaOne
On Thu, Sep 29, 2011 at 11:35 AM, Felix Filozov wrote: > Is the location of the meetup anywhere close to the conference? The group alternates between San Francisco and Mountain View but we're considering meeting every month in San Francisco and running the Mountain View meetings less frequently in addition, going forward. Because of Java One, we'll almost certainly meet up in San Francisco this coming week. Sean > On Wednesday, September 28, 2011, Sean Corfield > wrote: >> http://www.meetup.com/The-Bay-Area-Clojure-User-Group/ -- 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
Clojure DSL for Storm
I've fleshed out and documented the Clojure DSL for Storm. There were quite a few people interested in this, and I figured the Clojure community at large would want to know about it. Here are the docs: https://github.com/nathanmarz/storm/wiki/Clojure-DSL And here is an example that uses it: https://github.com/nathanmarz/storm-starter/blob/master/src/clj/storm/starter/clj/word_count.clj The DSL is quite nice. If you don't know what Storm is, the DSL won't make a lot of sense, so you should read through the introductory documentation to learn the concepts of Storm and the abstractions it exposes. -Nathan -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Clojure has native interoperability with JVM & CLR. This mean that you can have part of your code written in Clojure, part in Java/Jython/ JRuby if your target the JVM or C# if you target CLR. Of course you'll not be able to mess everything like first half of a method in Clojure, second half in java but this is going to work. Clojurescript might bring you interroperability with JS too. The best blurb language then is going to be java because support for it is part of the clojure design. But adding a new arbitrar language to this equation is going to be very costly. Also you don't only want interroperability you want to have a translation to idiomatic blurb code and back to idiomatic clojure. There is no offering for this right now and this would need lot of time to do it properly. And from my understanding, I see no other language that bring such support you ask for. This is not a feature that clojure lack. Maybe its me, but I do not see it as a a top priority for clojure language. We already have support with JVM, CLR. If required to any language through a network protocol. With Java/Clojure combination you can do nearly everything and have library for nearly everything too. Life is great ! On 29 sep, 12:39, Hank wrote: > Hi, > > I'd like to check the interest in the community for a comprehensive > Clojure library/framework/whathaveyou that helps produce Java/Python/ > Ruby/... a.k.a. "Blub" (http://www.paulgraham.com/avg.html) code, i.e. > instead of writing a Clojure program that e.g. produces web pages, > writing a Clojure program that produces a Blub program that produces > web pages. A Blub program in idiomatic, maintainable, efficient Blub > code that is. > > This is obviously to enable cooperation on shared domain > knowledge/"business logic" across communities with mixed Clojure/Blub > language preferences that I expect will continue to exist for decades. > Full cooperation would then also require the framework to produce > Clojure code that embodies functionality embodied in Blub code. I'd > expect that bit to be harder to realize but also more valuable, as it > would allow drawing not only on the body of work done in Blub for > reasons of preference but also on legacy code from the dark ages when > there was no Clojure. > > I'm asking this especially in light of the upcoming Clojure Conj where > there would be an opportunity to discuss this complex subject in a > "high bandwidth" :) kind of way. > > Searching this group I haven't found much along those lines other than > isolated problems being tackled -- the question here rather being: > What's the furthest the the envelope can be pushed in terms of co- > opting the Blub world? > > Hank -- 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
(flatten )
Hi there, possibly the flatten documentation is wrong as (flatten nil) for me is returning the empty list rather than nil. (1.3.0). Is there a better place to post this? (clojure.core/flatten nil) => () from docstring: "Takes any nested combination of sequential things (lists, vectors, etc.) and returns their contents as a single, flat sequence. (flatten nil) returns nil." -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Using Clojure to Generate Java Source?
Best would be to act as professionnal: - try to convince your new boss of the benefits of using clojure from a business point of view. - if this fail, either go back to writing java or quit. But do not try to abuse your boss and company by developping in clojure behind the scene and deliver some crappy generated java. This would be a legitimate reason to be fired. On 29 sep, 20:09, Dennis Crenshaw wrote: > I'm in a bit of a bind-- I've written some really nice Clojure code for > dealing with Genomic sequences that works as well or better than the > reference implementation we currently use where I work. However, the the > hierarchy has recently changed and my new boss is requiring me to have all > code in Java (eg. interop is not an option since he wants the source to be > pure Java.) Is there any way to prevent my head exploding from > hand-translating my Clojure code into Java? > > I'm sure it's possible to generate Java source since we heard Rich's amusing > anecdote about using Clojure to write reams of Java boilerplate instead of > doing himself. Is there a precedent or even an existing library for > translation from Clojure into Java source though? I'd like to be able to use > the code I've got without a long, painful devolution. More importantly, I > want to be able to continue developing in Clojure and just compile it to > Java source and check that in. > > Thanks, > Dennis -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Using Clojure to Generate Java Source?
There isn't an easy solution right now but I think it's worth the effort producing something there. You might want to join the discussion over here: http://groups.google.com/group/clojure/t/5da63583815b6102 -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Have you actually looked at the ClojureScript compiler? In what way is its design unsuitable for what you're proposing? David On Sep 29, 9:11 am, Hank wrote: > Mauve has more RAM? :) > > On Sep 29, 9:46 pm, David Nolen wrote: > > > > > > > > > ClojureScript? > > > David -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
On Sep 30, 8:35 am, Nicolas wrote: > Clojure has native interoperability with JVM & CLR. Right, this is machine interop. What about people interop? How can a Clojure programmer "interoperate" with a Ruby programmer? Can I chuck some Clojure code into Google translate (http://google.com/translate) and out comes Ruby code or vice versa? That would be nice. > And from my understanding, I see no > other language that bring such support you ask for. This is not a > feature that clojure lack. That's right, if your idea of a "lacking" feature is one that other langauges have and therefore Clojure should have, too, this isn't the case here. It is a feature that's "lacking" just because it would be useful. > Maybe its me, but I do not see it as a a top priority for clojure > language. That's why I posted this, to find out what the need is, how many Clojure programmers live in inhomogeneous programming environments? Someone just posted something like that a few hours later (http:// groups.google.com/group/clojure/browse_thread/thread/ 18b13c222163dda0), though I was more thinking of the open source communities out there and the vast amounts of code they produce, they are easier to observe and interact with since stuff doesn't happen behind closed doors like in the corporate world. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Hank, it ain't Clojure so this might be irrelevant to you, but some interesting cross-platform languages are: (a) www.haxe.org which is mature, and (b) Shen http://preview.tinyurl.com/6hnjpb2 which is still young. sincerely. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
On Thu, Sep 29, 2011 at 7:54 PM, Hank wrote: > On Sep 30, 8:35 am, Nicolas wrote: > > Clojure has native interoperability with JVM & CLR. > > Right, this is machine interop. What about people interop? How can a > Clojure programmer "interoperate" with a Ruby programmer? Can I chuck > some Clojure code into Google translate (http://google.com/translate) > and out comes Ruby code or vice versa? That would be nice. > Embedding V8 is becoming popular in the Ruby community. You can write ClojureScript and interoperate just fine. David -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: aquamacs, slime and clojure on OS X
Thanks for all the answers, everyone. I did the original post and then immediately came down with some kind of nasty cold. So I just got back to it today, but have not had a chance to try the suggestions. I'll probably discover that my setup difficulties had a lot to do with feeling crummy and being a bit fuzzy in the head. I'll find out shortly here. Thanks again. - J - -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
No. Maintanable and idiomatic code weren't its goals, efficient maybe. If it did in fact produce maintainable and idiomatic code that would be an accidental byproduct. Does it? The ClojureScript compiler was also, from what I understand, designed to produce small programs, i.e. "one web page's worth" of JavaScript code. I wouldn't assume that this easily scales up especially maintainability wise. On Sep 30, 9:45 am, David Nolen wrote: > Have you actually looked at the ClojureScript compiler? In what way is > its design unsuitable for what you're proposing? > > David > > On Sep 29, 9:11 am, Hank wrote: > > > > > > > > > Mauve has more RAM? :) > > > On Sep 29, 9:46 pm, David Nolen wrote: > > > > ClojureScript? > > > > David -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Just replying to my own post here: Something like Linj (https://github.com/xach/linj / http://www.doiserbia.nb.rs/img/doi/1820-0214/2008/1820-02140802019L.pdf) and the corresponding Jnil go into the right direction. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Thanks, but from what I can see, they enable machine interop, not people interop. Instead of cross-platform, can you do cross-community? On Sep 30, 10:00 am, Raoul Duke wrote: > Hank, > > it ain't Clojure so this might be irrelevant to you, but some > interesting cross-platform languages are: (a)www.haxe.orgwhich is > mature, and (b) Shenhttp://preview.tinyurl.com/6hnjpb2which is still > young. > > sincerely. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
On Thu, Sep 29, 2011 at 3:39 AM, Hank wrote: > I'd like to check the interest in the community for a comprehensive > Clojure library/framework/whathaveyou that helps produce Java/Python/ > Ruby/... a.k.a. "Blub" (http://www.paulgraham.com/avg.html) code, i.e. > instead of writing a Clojure program that e.g. produces web pages, > writing a Clojure program that produces a Blub program that produces > web pages. A Blub program in idiomatic, maintainable, efficient Blub > code that is. I think the major obstacle is likely to be the difference in idioms. Any substantial idiomatic piece of Clojure is going to be almost impossible to automatically translate to _idiomatic_ code in another high-level language that uses different idioms. You'd also probably have to introduce a number of "coding conventions" to constrain your Clojure code in order to avoid "holes" in the translation. Some questions: * How do you translate Clojure functions in namespaces spread across multiple files into a Java class? * Would it even be idiomatic Java to always have classes full of only static methods? * What about Clojure's vast library of functions (esp. higher-order)? * What would something like (map (juxt :id identity) (filter (comp not nil? :data) some-lazy-data-stream)) look like in Blub, if Blub doesn't have keywords, composition, higher-order functions, lazy data structures? * How would code that uses STM translate to a Blub without it? * How idiomatic would Blub code be when Clojure uses immutable data by default? I think it's a fascinating problem to try to solve for any given target Blub but I'm not sure how practical it would be, i.e., how readable the generated Blub code would be to an "average" Blub programmer...? -- Sean A Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ World Singles, LLC. -- http://worldsingles.com/ Railo Technologies, Inc. -- http://www.getrailo.com/ "Perfection is the enemy of the good." -- Gustave Flaubert, French realist novelist (1821-1880) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Using Clojure to Generate Java Source?
It may be easier to convince him by explaining how much time it is going to cost to do conversion. Abstract computer science terminology isn't always that convincing to managers, but explaining how much time will be wasted is. On Sep 29, 6:56 pm, Nicolas wrote: > Best would be to act as professionnal: > - try to convince your new boss of the benefits of using clojure from > a business point of view. > - if this fail, either go back to writing java or quit. > > But do not try to abuse your boss and company by developping in > clojure behind the scene and deliver some crappy generated java. This > would be a legitimate reason to be fired. > > On 29 sep, 20:09, Dennis Crenshaw wrote: > > > > > > > > > I'm in a bit of a bind-- I've written some really nice Clojure code for > > dealing with Genomic sequences that works as well or better than the > > reference implementation we currently use where I work. However, the the > > hierarchy has recently changed and my new boss is requiring me to have all > > code in Java (eg. interop is not an option since he wants the source to be > > pure Java.) Is there any way to prevent my head exploding from > > hand-translating my Clojure code into Java? > > > I'm sure it's possible to generate Java source since we heard Rich's amusing > > anecdote about using Clojure to write reams of Java boilerplate instead of > > doing himself. Is there a precedent or even an existing library for > > translation from Clojure into Java source though? I'd like to be able to use > > the code I've got without a long, painful devolution. More importantly, I > > want to be able to continue developing in Clojure and just compile it to > > Java source and check that in. > > > Thanks, > > Dennis -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: aquamacs, slime and clojure on OS X
Ok, I followed the simple instructions, but ran into a minor problem. It seems that the Aquamacs version of slime conflicts with the clojure setup, and should be disabled. This version of slime (as delivered by the Aquamacs folks) is installed in /Library/Application Support/Aquamacs Emacs/SLIME/. Since I am not going to be using slime with Common Lisp for a while, I just deleted the afore-mentioned directory. There is no doubt a more subtle way, but for now I don't care. My guess is that the majority of people using Aquamacs and clojure may not have had slime set up as I had for use with Common Lisp, so the conflict may not have been evident. I now get a toplevel when I navigate to a leiningen project and do M-x clojure-jack-in, so HAPPY HAPPY HAPPY! Thanks. - J - -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
> I think the major obstacle is likely to be the difference in idioms. > Any substantial idiomatic piece of Clojure is going to be almost > impossible to automatically translate to _idiomatic_ code in another > high-level language that uses different idioms. That could very well turn out to be the case. In the spectrum between "fully manual" and "fully automated" I can picture scenarios like: - Mostly manual but with some automatic assistance from the IDE: E.g. the way Eclipse assists you in coding Java, when you press Ctrl+Space. It doesn't automatically write code for you but it can narrow down the choice as to what to type next. - Most automatic but with some manual assistance from the coder: E.g. annotate the Clojure code with hints about the idioms to translate to in the target language. Right now in Clojure we use annotations like :exposes-methods that aren't strictly for the Clojure functionality itself but for Java interop. So there could be annotations like :use-design-pattern-x that dictate the choice of idiom/design pattern in the compilation to the target language. > You'd also probably > have to introduce a number of "coding conventions" to constrain your > Clojure code in order to avoid "holes" in the translation. It's probably a question of how unwieldy the produced code is allowed to get. If you express the goal of "maintainability" in terms of some metric like lines of code or whatever then I can see hard limits being reached. If you don't put a limit on that then I don't see any danger of holes. > Some questions: > * How do you translate Clojure functions in namespaces spread across > multiple files into a Java class? > [...] Those are very good questions and I'd have to think about it. Maybe I'll start a wiki somewhere so we can start collecting "translation recipes". Generally, if the answer isn't obvious from staring at the Clojure code, it helps to think about the problems in terms of the bigger picture, i.e. the business logic/domain knowledge, and then translate to Blub in the head. E.g. "I want to cache generated web pages on the disk, how would I do this in Java?" > * How would code that uses STM translate to a Blub without it? I like this one in particular. People have written concurrent code before STM. I do it in my job every day. :) How did that work with explicit locks again?? > * How idiomatic would Blub code be when Clojure uses immutable data by > default? A good source for this is the O'Reilly book "Functional Programming in Java". There you can see how idioms from one language can be applied to another. I think Java code that uses a lot of immutable data, i.e. "final" variables all around, would still be accepted by the Java community. The produced code could even leave out the "final" keyword in order to not cause too much clutter but still not modify the variables. It violates the principle of least authority but I see that in real-world code everywhere. > I think it's a fascinating problem to try to solve for any given > target Blub but I'm not sure how practical it would be, i.e., how > readable the generated Blub code would be to an "average" Blub > programmer...? The problem may have to be solved first in order to judge the value of the solution. My day-to-day experience and my guts tell me it's worth it. :D You weren't going to the Conj by any chance, were you? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
On Thu, Sep 29, 2011 at 10:48 PM, Hank wrote: > A good source for this is the O'Reilly book "Functional Programming in > Java". There you can see how idioms from one language can be applied > to another. Oh yes, I know about that book but the question is: how idiomatic is that code in Java? You can write imperative, stateful code in Clojure but it wouldn't be idiomatic. > You weren't going to the Conj by any chance, were you? Yup. Looking forward to it! -- Sean A Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ World Singles, LLC. -- http://worldsingles.com/ Railo Technologies, Inc. -- http://www.getrailo.com/ "Perfection is the enemy of the good." -- Gustave Flaubert, French realist novelist (1821-1880) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
Addendum: Just as an example, for this here ...
> Would it even be idiomatic Java to always have classes full of only
> static methods?
... the Java-ists have an idiom ("design pattern") called singleton.
They're not static methods but once-instance classes.
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Re: pattern matching in clojure
Last I checked matchjure generates fns which break recur (there is an issue open for it). Trading recursion for matching seems like a bad deal, I recommend using match instead. On Sep 29, 2011 4:32 AM, "Christian Pohlmann" wrote: > Additionally to core.match there is also matchure [1] which comes with > a defn-match that can be used like this: > > (defn-match choose > ([_ 0] 1) > ([0 _] 0) > ([?n ?k] (+ (choose (dec n) (dec k)) (choose (dec n) k > > This makes defining functions fairly close to what you're used from Haskell. > > [1] https://github.com/dcolthorp/matchure > > Christian > > > On Thu, Sep 29, 2011 at 12:03 PM, Michael Jaaka > wrote: >> Hi! >> >> Is there any way to define function with pattern matching in function >> signature as it is in haskell? >> >> Bye! >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: producing Blub code and vv.
On Thu, Sep 29, 2011 at 11:24 PM, Hank wrote:
>> Would it even be idiomatic Java to always have classes full of only
>> static methods?
> ... the Java-ists have an idiom ("design pattern") called singleton.
> They're not static methods but once-instance classes.
Doesn't that kind of prove my point? :)
And, after all, isn't the Singleton design pattern only a workaround
for the fact that languages like Java don't have a built-in construct
for creating a memoized global variable? :)
See you at the Conj...
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World Singles, LLC. -- http://worldsingles.com/
Railo Technologies, Inc. -- http://www.getrailo.com/
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Re: producing Blub code and vv.
On Sep 30, 2:58 pm, Sean Corfield wrote:
> On Thu, Sep 29, 2011 at 11:24 PM, Hank wrote:
> >> Would it even be idiomatic Java to always have classes full of only
> >> static methods?
> > ... the Java-ists have an idiom ("design pattern") called singleton.
> > They're not static methods but once-instance classes.
>
> Doesn't that kind of prove my point? :)
Uh not sure. Let's argue about it in person in November.
> And, after all, isn't the Singleton design pattern only a workaround
> for the fact that languages like Java don't have a built-in construct
> for creating a memoized global variable? :)
http://c2.com/cgi/wiki?AreDesignPatternsMissingLanguageFeatures
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