Re: 请教一个问题
Let me translate: Hi all, I am reading lein-ring's source code, and I find that the many functions(defn) uses the syntax quote(`), e.g. (defn load-namespaces [ syms] `(require ~@(for [s syms :when s] `'~(if-let [ns (namespace s)] (symbol ns) s My intuition is that syntax quote better be used in macros which is invoke during compiling. What's reason/benefit to use syntax quote in functions which will are invoked at runtime? -- xumingmingv Github: https://github.com/xumingming Weibo: http://weibo.com/64398966 Sent with Sparrow (http://www.sparrowmailapp.com/?sig) On 2013年6月13日Thursday at 下午12:39, stream wrote: Hi all 我在看 lein-ring插件源码时，发现很多 语法引用符号 ` 都用在defn里。 `(do ~(start-nrepl-expr project) ~(start-server-expr project)) (defn load-namespaces [ syms] `(require ~@(for [s syms :when s] `'~(if-let [ns (namespace s)] (symbol ns) s 我的直觉是这些最好是用在编译期的宏里。 用在运行期的的函数里是什么意思呢， 比较愚笨，希望高手解答。谢谢 -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com (mailto:clojure@googlegroups.com) Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com (mailto: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 (mailto:clojure+unsubscr...@googlegroups.com). For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Making cryptograms, my first Clojure function. Feedback welcome.
I actually like the original lower/upper/digit the best: lower (seq abcdefghijklmnopqrstuvwxyz) upper (seq ABCDEFGHIJKLMNOPQRSTUVWXYZ) digit (seq 0123456789) It's just immediately obvious, especially for instance if you wanted to remove ambiguous chars like 0, O, l, I. On Wednesday, June 12, 2013 7:30:31 PM UTC-5, Shannon Severance wrote: Thank you all, I've learned something from each entry. My latest version, incorporating some of the changes suggested: (defn make-crypto [] (let [lower (map char (range (int \a) (inc (int \z upper (map char (range (int \A) (inc (int \Z digit (map char (range (int \0) (inc (int \9 [sl su sd] (map shuffle [lower upper digit]) encrypt (zipmap (concat lower upper digit) (concat sl su sd))] (fn [s] (apply str (map #(encrypt % %) s) I specified the range the way I did because I wanted meaningful start and end points, I don't have the code points for many characters memorized. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
Really inspiring thread and a welcome stick to beat the functional == academic nay-sayers with! On Wed, Jun 12, 2013 at 10:30 PM, Jose A. Ortega Ruiz j...@gnu.org wrote: Hi Plinio, On Mon, Jun 10 2013, Plínio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. At BigML, our backend is written almost fully (99%) in Clojure. We've released a couple of libraries it uses as open source: https://github.com/bigmlcom/histogram https://github.com/bigmlcom/sampling https://github.com/bigmlcom/io Cheers, jao -- Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information? -T.S. Eliot, poet (1888-1965) -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- http://about.me/rogier -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
I work at boxuk.com, we have some internal apps, and a few small production services in Clojure. On Monday, June 10, 2013 10:47:25 PM UTC+1, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
Hi Plínio, at gateprotect, we use clojure in our firewall product for model representation and doing all the hard/logic work. Some stats: ~ 370 namespaces ~ 25000 sloc A great part of that is written in our model DSL. Cheers, Jan http://www.gateprotect.com We are hiring! http://www.gateprotect.com/en-GB/company/jobs.html -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
End user applications
Hi all, I was recently trying to find some applications written in Clojure that are meant for end users. The aim was to find those that would be interesting to a user even though the user does not know anything about Clojure or that the application is written in it. Given that Clojure is not that young anymore I was a bit surprised to find only Riemann [0] and Semira [1] out there among thousands of libraries or development tools. Can you think of others? What are Clojure's killer applications ? [0] http://riemann.io/ [1] https://github.com/remvee/semira/ -- Wolodja babi...@gmail.com 4096R/CAF14EFC 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC signature.asc Description: Digital signature
ring 如何实现热加载代码?
今天看了一下ring代码，想看一下，如何实现热加载clj代码。 我尝试 run-jetty :join true 导致server被阻塞，然后emacs nrepl 无法热加载代码。 改成 join false，jetty 进程不加入主进程里，才可以正常加载。 我翻查源码，没发现是如何分离server与逻辑代码，从而实现只热加载handler的。 哪位大神能科普一下呢，谢谢 -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
Hi Plínio, We use Clojure for many of our backend services at kontera.com /stask On Tuesday, June 11, 2013 12:47:25 AM UTC+3, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
PuppetDB is another: http://docs.puppetlabs.com/puppetdb/latest/index.html We use PuppetDB at GOV.UK for host management and reporting purposes. Nobody else on my team really knows clojure, but nobody has to care because PuppetDB is self-contained. On 13 June 2013 10:01, Wolodja Wentland babi...@gmail.com wrote: Hi all, I was recently trying to find some applications written in Clojure that are meant for end users. The aim was to find those that would be interesting to a user even though the user does not know anything about Clojure or that the application is written in it. Given that Clojure is not that young anymore I was a bit surprised to find only Riemann [0] and Semira [1] out there among thousands of libraries or development tools. Can you think of others? What are Clojure's killer applications ? [0] http://riemann.io/ [1] https://github.com/remvee/semira/ -- Wolodja babi...@gmail.com 4096R/CAF14EFC 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: 请教一个问题
Leiningen plugins don't run in the project's environment, so they don't have access to the project's code or dependencies. In some cases you want to evaluate code in the project's environment, and Leiningen provides the eval-in-project function, which evaluates a quoted expression in the context of the project. The functions in Lein-Ring that return syntax-quoted expressions are for generating a form to be evaluated with eval-in-project. In this case, to start a web server or to compile a war file. - James On 13 June 2013 07:08, James Xu xumingmi...@gmail.com wrote: Let me translate: Hi all, I am reading lein-ring's source code, and I find that the many functions(defn) uses the syntax quote(`), e.g. (defn load-namespaces [ syms] `(require ~@(for [s syms :when s] `'~(if-let [ns (namespace s)] (symbol ns) s My intuition is that syntax quote better be used in macros which is invoke during compiling. What's reason/benefit to use syntax quote in functions which will are invoked at runtime? -- xumingmingv Github: https://github.com/xumingming Weibo: http://weibo.com/64398966 Sent with Sparrow http://www.sparrowmailapp.com/?sig On 2013年6月13日Thursday at 下午12:39, stream wrote: Hi all 我在看 lein-ring插件源码时，发现很多 语法引用符号 ` 都用在defn里。 `(do ~(start-nrepl-expr project) ~(start-server-expr project)) (defn load-namespaces [ syms] `(require ~@(for [s syms :when s] `'~(if-let [ns (namespace s)] (symbol ns) s 我的直觉是这些最好是用在编译期的宏里。 用在运行期的的函数里是什么意思呢， 比较愚笨，希望高手解答。谢谢 -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: ring 如何实现热加载代码?
Instead of doing:
(defonce server (run-jetty my-app {:port 8080 :join? false}))
do:
(defonce server (run-jetty #'my-app {:port 8080 :join? false}))
This is make the code reload every time you redefine my-app.
Also see:
http://stackoverflow.com/questions/2706044/how-do-i-stop-jetty-server-in-clojure
Stathis
On Thursday, 13 June 2013 10:33:15 UTC+1, Stream wrote:
今天看了一下ring代码，想看一下，如何实现热加载clj代码。
我尝试 run-jetty :join true
导致server被阻塞，然后emacs nrepl 无法热加载代码。
改成 join false，jetty 进程不加入主进程里，才可以正常加载。
我翻查源码，没发现是如何分离server与逻辑代码，从而实现只热加载handler的。
哪位大神能科普一下呢，谢谢
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Re: End user applications
What about Overtone? http://overtone.github.io/ On Thu, Jun 13, 2013 at 5:01 AM, Wolodja Wentland babi...@gmail.com wrote: Hi all, I was recently trying to find some applications written in Clojure that are meant for end users. The aim was to find those that would be interesting to a user even though the user does not know anything about Clojure or that the application is written in it. Given that Clojure is not that young anymore I was a bit surprised to find only Riemann [0] and Semira [1] out there among thousands of libraries or development tools. Can you think of others? What are Clojure's killer applications ? [0] http://riemann.io/ [1] https://github.com/remvee/semira/ -- Wolodja babi...@gmail.com 4096R/CAF14EFC 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
extending a protocol to primitive arrays strange problem
Hi everyone,
here is an odd one for you...I've got this tiny protocol:
(defprotocol Normalisable
(normalise [this transform-fn]
[this transform-fn limits]))
now, I'd like to have it extended to clojure native data-structures; no
problem:
(extend-protocol Normalisable
java.lang.Number
(normalise
([this transform] (normalise this transform [10 -10 1 -1]))
([this transform limits] (apply transform this limits)))
clojure.lang.IPersistentVector
(normalise
([this transform]
(let [top (apply max this)
bottom (apply min this)]
(mapv #(normalise % transform [top bottom]) this)) )
([this transform limits]
(normalise this #(transform % limits))) )
clojure.lang.IPersistentSet
(normalise
([this transform]
(let [top (apply max this)
bottom (apply min this)]
(persistent!
(reduce #(conj! %1 (normalise %2 transform [top bottom])) (transient
#{}) this
([this transform limits]
(normalise this #(transform %1 %2 %3 (first limits) (second limits )
)
So far so good...now I'd like to have it extended to arrays. I added the
following to my 'extend-protocol' form:
(Class/forName [D)
(normalise
([this transform]
(let [top (apply max this)
bottom (apply min this)]
(amap ^doubles this idx ret (normalise (aget ^doubles this idx)
transform [top bottom]
([this transform limits]
(normalise this #(transform % limits
and this throws this where the 'extend-protocol' form starts:
CompilerException java.lang.UnsupportedOperationException: nth not
supported on this type: *Character*, compiling: (line 27)
if I replace (Class/forName [D) with (class (double-array 1)) the
error is slightly different:
CompilerException java.lang.UnsupportedOperationException: nth not
supported on this type: *Symbol*, compiling: (line 27)
what on earth is going on? What character and what symbol is the error
referring to? And where is nth being called?
the stack trace is the following but it's not very helpful (at least
not to me!):
Compiler.java:6380 clojure.lang.Compiler.analyze
Compiler.java:6322 clojure.lang.Compiler.analyze
Compiler.java:2879 clojure.lang.Compiler$MapExpr.parse
Compiler.java:6369 clojure.lang.Compiler.analyze
Compiler.java:6322 clojure.lang.Compiler.analyze
Compiler.java:3624 clojure.lang.Compiler$InvokeExpr.parse
Compiler.java:6562 clojure.lang.Compiler.analyzeSeq
Compiler.java:6361 clojure.lang.Compiler.analyze
Compiler.java:6322 clojure.lang.Compiler.analyze
Compiler.java:5708
clojure.lang.Compiler$BodyExpr$Parser.parse
Compiler.java:5139 clojure.lang.Compiler$FnMethod.parse
Compiler.java:3751 clojure.lang.Compiler$FnExpr.parse
Compiler.java:6558 clojure.lang.Compiler.analyzeSeq
Compiler.java:6361 clojure.lang.Compiler.analyze
Compiler.java:6616 clojure.lang.Compiler.eval
Compiler.java:6608 clojure.lang.Compiler.eval
Compiler.java:7064 clojure.lang.Compiler.load
Compiler.java:7020 clojure.lang.Compiler.loadFile
RT.java:318 clojure.lang.RT$3.invoke
NO_SOURCE_FILE:1 user/eval252
Compiler.java:6619 clojure.lang.Compiler.eval
Compiler.java:6582 clojure.lang.Compiler.eval
core.clj:2852 clojure.core/eval
main.clj:259 clojure.main/repl[fn]
main.clj:259 clojure.main/repl[fn]
main.clj:277 clojure.main/repl[fn]
main.clj:277 clojure.main/repl
RestFn.java:1096 clojure.lang.RestFn.invoke
interruptible_eval.clj:56
clojure.tools.nrepl.middleware.interruptible-eval/evaluate[fn]
AFn.java:159 clojure.lang.AFn.applyToHelper
AFn.java:151 clojure.lang.AFn.applyTo
core.clj:617 clojure.core/apply
core.clj:1788 clojure.core/with-bindings*
RestFn.java:425 clojure.lang.RestFn.invoke
interruptible_eval.clj:41
clojure.tools.nrepl.middleware.interruptible-eval/evaluate
interruptible_eval.clj:171
clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval[fn]
core.clj:2330 clojure.core/comp[fn]
interruptible_eval.clj:138
clojure.tools.nrepl.middleware.interruptible-eval/run-next[fn]
AFn.java:24 clojure.lang.AFn.run
ThreadPoolExecutor.java:1145
java.util.concurrent.ThreadPoolExecutor.runWorker
ThreadPoolExecutor.java:615
java.util.concurrent.ThreadPoolExecutor$Worker.run
Thread.java:722 java.lang.Thread.run
Caused by: java.lang.UnsupportedOperationException: nth not supported on
this type: Character
RT.java:857 clojure.lang.RT.nthFrom
RT.java:807
Re: Clojure in production
On Monday, June 10, 2013 5:47:25 PM UTC-4, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. I've previously written about adopting Clojure at DRW (drw.com): http://blog.jayfields.com/2012/01/lessons-learned-while-introducing-new.html -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
bug in 'extend-protocol' ???
Hi all, can anyone explain why these 2 are different given the same protocol (the only difference is the swapped ordering)? (defprotocol FOO (bar [this a] [this a b]) ) (extend-protocol FOO ;;THIS WORKS (Class/forName [D) (bar ([_ a] a) ([_ a b] (+ a b))) String (bar ([_ a] (str a)) ([_ a b] (str a b (extend-protocol FOO ;;THIS WON'T COMPILE String (bar ([_ a] (str a)) ([_ a b] (str a b))) (Class/forName [D) (bar ([_ a] a) ([_ a b] (+ a b))) ) CompilerException java.lang.UnsupportedOperationException: nth not supported on this type: Character, compiling:(NO_SOURCE_PATH:1:1) it seems that the extension points include arrays, the ordering matters!!! The extension to array has to come first otherwise it won't even compile...Moreover, and possibly for the same reason, multiple extensions for different array-types fails with the same exception. for example while the following works: (extend-protocol FOO (Class/forName [D) (bar ([_ a] a) ([_ a b] (+ a b))) ) trying to add more types fails: (extend-protocol FOO (Class/forName [D) (bar ([_ a] a) ([_ a b] (+ a b))) (Class/forName [F) (bar ([_ a] a) ([_ a b] (+ a b))) ) CompilerException java.lang.UnsupportedOperationException: nth not supported on this type: Character, compiling:(NO_SOURCE_PATH:1:1) Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [pre-ANN] test2, the last Clojure testing framework
We've figured out a way to do groups in a simple, flexible way, that allows for probably everyone's use-cases. It requires a change to the spec and to how runners work. Here's an implementation similar to speclj: https://www.refheap.com/15744 And this is how clojure.test would be translated: https://www.refheap.com/15752 Each test-fn may have a :group metadata key, pointing to a group-map. Group-maps must contain :description, :around-each, :around-all, and optionally its own parent :group. Then the test-results becomes a nested list rather than a flat one. If you hate using nested tests, you could just ignore it and make every test-fn have no group. The upside is that it allows (perfectly?) emulating fixtures in at least clojure.test, speclj, and midje. Another upside is it's all done statically, so you can for example choose to run a test with or without its fixtures, and you can even run a test with other fixtures if for some reason you have that need (someone said he did but I'm not sure I believe him). The downside is that now the spec talks about fixtures, which might limit innovation. But maybe not, since it's just using normal static Clojure data, which is known for very, very easily manipulated and generated. On Wed, Jun 12, 2013 at 12:13 PM, Steven Degutis sbdegu...@gmail.comwrote: There's been some discussion about how nesting should work. It should probably be part of the spec, in a flexible and non-intrusive way. Then we would consider a flat suite of tests to be just nested suite that's only a 1-level deep. The two things we want nesting for are defining fixture-like behavior (around-each or around-all, etc), and reporting groups of tests together. The fixture part should almost definitely *not* be part of the spec. That's way too limiting for innovation. But the reporting aspect probably needs a chance to the spec. For fixture stuff, in speclj (rspec) parlance, you could imagine the describe macro, which transforms a list of it-blocks into a flat list of test-fns that are each wrapped inside any before/after/around functions given at the same level, and recursively does this with nested describe blocks. All this work could be done in the Definer, and no matter how deep the describe-nesting is, the result is always still a flat list of test-fns. This is a simple way to conform to the current spec while having fixture-like behavior. This was my plan for the speclj port. But for reporting, it's trickier. The reporter needs to see the structure somehow. This isn't easily faked with a flat list of test-results, so the test-results would have to become potentially nested. But this raises the question of how a flat list of test-fns produces a nested list of test-results. This is the part I'm totally confused about. On Sat, Jun 8, 2013 at 10:14 AM, Steven Degutis sbdegu...@gmail.comwrote: Test2 is a new testing lib for Clojure, where the power is its simplicity, extensibility, and a SPEChttps://github.com/evanescence/test2/blob/master/SPEC.md much like Ring's. Github: https://github.com/evanescence/test2 Some background: It came out of discussionshttps://github.com/evanescence/test2/wiki/Communal-Brainstorming with the smart folks in #clojure, who were frustrated with the inflexibility of existing libs, and intended this to be the spiritual successor to clojure.test. We wanted something that was still simple like clojure.test, but could be extended externally much more easily in case you wanted features found in clojure.test, Midje, Speclj, or Expectations, or whatever else. This is a pre-ANN because it's more of a call for extensions. I've written one last night, test2-autorunnerhttps://github.com/evanescence/test2-autorunner, which took about an hour. This should give some idea of how easy it is and how well-designed the SPEC was by the smart folks of #clojure. There are some ideas at the bottom of the wiki, but of course any extensions are encouraged. -Steven -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from
'amap' issue after extending a protocol to a primitive array type
more weirdness! try this at your REPL: -extend any protocol to some primitive array type - let's say 'doubles' -while in the same namespace, try to use amap passing it an array of floats and also type-hint it with ^floats * **IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80)* the same would have happened if the protocol had been extended to floats and tried to use amap with doubles. In fact any combination of primitive types will fail. Only the type that has been extended will work. In the above case that would be doubles. If we extended the protocol to longs then only longs would work and so forth... I'm almost certain that this is not intentional...any opinions? Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
End user applications
getprismatic.com, orderharmony.com, www.rocketli.st are consumer focused apps written in Clojure. FlightCaster is hard to miss. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
Jim - FooBar(); jimpil1...@gmail.com writes: CompilerException java.lang.UnsupportedOperationException: nth not supported on this type: Character, compiling:(NO_SOURCE_PATH:1:1) If you examine the implementation of `extend-protocol` and for how it distinguishes between additional functions being defined for a type and new types to which to extend the protocol, I think you’ll see what’s going on here. -Marshall -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
while loop
Hi there ;
How do i implement the following in clojure
while((entry = stream.getNextEntry())!=null) {
System.out.println(entry.getName());
}
NOTE: calling getNextEntry moves the curse to the next entry.
CONTEXT: I am trying to list the contents of a .zip file using
http://docs.oracle.com/javase/6/docs/api/java/util/zip/ZipInputStream.html
Regards.
Josh
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Re: while loop
I would use loop/recur
something like this:
(loop [item (get-next-entry)]
(when item
(do
(do-something)
(recur (get-next-entry
On Thu, Jun 13, 2013 at 2:20 PM, Josh Kamau joshnet2...@gmail.com wrote:
Hi there ;
How do i implement the following in clojure
while((entry = stream.getNextEntry())!=null) {
System.out.println(entry.getName());
}
NOTE: calling getNextEntry moves the curse to the next entry.
CONTEXT: I am trying to list the contents of a .zip file using
http://docs.oracle.com/javase/6/docs/api/java/util/zip/ZipInputStream.html
Regards.
Josh
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Re: bug in 'extend-protocol' ???
It shouldn't be necessary to examine the source to know what's going on in a builtin, really, but I also encountered this one recently. The way the extend-protocol macro finds which entries are types and which are function definitions is by checking which are lists. Frankly, a better macro would involve a vector, e.g. (extend-protocol FOO [(Class/forName [D) (methods...)] [otherClass (methods...)]) On Thursday, June 13, 2013 10:16:16 AM UTC-7, Marshall Bockrath-Vandegrift wrote: Jim - FooBar(); jimpi...@gmail.com javascript: writes: CompilerException java.lang.UnsupportedOperationException: nth not supported on this type: Character, compiling:(NO_SOURCE_PATH:1:1) If you examine the implementation of `extend-protocol` and for how it distinguishes between additional functions being defined for a type and new types to which to extend the protocol, I think you’ll see what’s going on here. -Marshall -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
On 13/06/13 18:16, Marshall Bockrath-Vandegrift wrote: Jim - FooBar(); jimpil1...@gmail.com writes: CompilerException java.lang.UnsupportedOperationException: nth not supported on this type: Character, compiling:(NO_SOURCE_PATH:1:1) If you examine the implementation of `extend-protocol` and for how it distinguishes between additional functions being defined for a type and new types to which to extend the protocol, I think you’ll see what’s going on here. -Marshall 'extend-protocol' simply expands to a bunch of 'extend-type' forms. In my example I used 'extend-protocol' and then 'extend-type' on a type not included in the extend-protocol form. I did that only because I get a compilation error when I try to provide extension points for both 'doubles' and 'floats'. That led me to pull out the code-block for 'floats' and use extend-type specifically for floats. That compiled, but because it's using amap internally, throws the exception I mentioned previously. The exception you've responded to is only thrown when I try to put both extension points in the same 'extend-protocol' form or in fact, whenever any extension for primitive arrays doesn't come first before everything else! are the 2 problems related? where should I look for the one error and where for the other? thanks, Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: 'amap' issue after extending a protocol to a primitive array type
Are you sure? user= (defprotocol A (foo [a b])) A user= (extend-protocol A (Class/forName [D) (foo [a b] [a b])) nil user= (pprint (foo (double-array [1 2 3]) 1)) [[1.0, 2.0, 3.0] 1] user= (pprint (amap (float-array [1 2 3]) i ret (float (* 2 (aget ret i) [2.0, 4.0, 6.0] My guess is you're not remembering to cast to the appropriate type in your loop expression in amap. For instance: user= (amap (float-array [1 2 3]) i ret i) IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80) Whereas you need: user= (amap (float-array [1 2 3]) i ret (float i)) #float[] [F@6a636064 --Aaron On Thu, Jun 13, 2013 at 12:57 PM, Jim - FooBar(); jimpil1...@gmail.comwrote: more weirdness! try this at your REPL: -extend any protocol to some primitive array type - let's say 'doubles' -while in the same namespace, try to use amap passing it an array of floats and also type-hint it with ^floats * **IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80)* the same would have happened if the protocol had been extended to floats and tried to use amap with doubles. In fact any combination of primitive types will fail. Only the type that has been extended will work. In the above case that would be doubles. If we extended the protocol to longs then only longs would work and so forth... I'm almost certain that this is not intentional...any opinions? Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
On 13/06/13 18:28, Leon Barrett wrote: It shouldn't be necessary to examine the source to know what's going on in a builtin, really, but I also encountered this one recently. The way the extend-protocol macro finds which entries are types and which are function definitions is by checking which are lists. I'm not sure I follow...if we can't have lists that evaluate to Class objects then how am I able to succesfully use (Class/forName [D) as the first extension but not in any other position? should I be using (eval (Class/forName [D)) so the macro definitely receives a Class? You say you've encountered this a lot...can you elaborate? what did you do? many many thanks, Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
On 13/06/13 18:47, Jim - FooBar(); wrote: On 13/06/13 18:28, Leon Barrett wrote: It shouldn't be necessary to examine the source to know what's going on in a builtin, really, but I also encountered this one recently. The way the extend-protocol macro finds which entries are types and which are function definitions is by checking which are lists. I'm not sure I follow...if we can't have lists that evaluate to Class objects then how am I able to succesfully use (Class/forName [D) as the first extension but not in any other position? should I be using (eval (Class/forName [D)) so the macro definitely receives a Class? You say you've encountered this a lot...can you elaborate? what did you do? many many thanks, Jim or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: while loop
I like the StackOverflow answer for this:
http://stackoverflow.com/questions/5419125/using-java-api-from-clojure-reading-zip-file
(defn entries [zipfile]
(enumeration-seq (.entries zipfile)))
(defn walkzip [fileName]
(with-open [z (java.util.zip.ZipFile. fileName)]
(doseq [e (entries z)]
(println (.getName e)
On Thu, Jun 13, 2013 at 1:25 PM, Leon Barrett lbarr...@climate.com wrote:
Yeah, Clojure's while construct isn't really good at stuff like that. A
loop is the basic thing I reach for, and I'd probably write it as:
(loop []
(when-let [entry (.getNextEntry stream)]
(println entry)
(recur)))
On Thursday, June 13, 2013 10:20:22 AM UTC-7, Josh Kamau wrote:
Hi there ;
How do i implement the following in clojure
while((entry = stream.getNextEntry())!=null) {
System.out.println(entry.**getName());
}
NOTE: calling getNextEntry moves the curse to the next entry.
CONTEXT: I am trying to list the contents of a .zip file using
http://docs.oracle.com/javase/**6/docs/api/java/util/zip/**ZipInputStream.html
http://docs.oracle.com/javase/6/docs/api/java/util/zip/ZipInputStream.html
Regards.
Josh
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Re: bug in 'extend-protocol' ???
On 13/06/13 18:52, Jim - FooBar(); wrote: On 13/06/13 18:47, Jim - FooBar(); wrote: On 13/06/13 18:28, Leon Barrett wrote: It shouldn't be necessary to examine the source to know what's going on in a builtin, really, but I also encountered this one recently. The way the extend-protocol macro finds which entries are types and which are function definitions is by checking which are lists. I'm not sure I follow...if we can't have lists that evaluate to Class objects then how am I able to succesfully use (Class/forName [D) as the first extension but not in any other position? should I be using (eval (Class/forName [D)) so the macro definitely receives a Class? You say you've encountered this a lot...can you elaborate? what did you do? many many thanks, Jim or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? Jim If I simply def the class objects upfront and use the vars in the extend-protocol macro?that could possibly work as there will be no confusion as to what is a list and what isn't... I'll try that as soon as I get back! Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
On Thu, Jun 13, 2013 at 1:52 PM, Jim - FooBar(); jimpil1...@gmail.com wrote: or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? You can call extend-protocol several times: user= (defprotocol A (foo [a b])) A user= (extend-protocol A (Class/forName [D) (foo [a b] [a b])) nil user= (extend-protocol A (Class/forName [F) (foo [a b] [a b])) nil user= (foo (double-array [1 2 3]) 1) [#double[] [D@5a12d46c 1] user= (foo (float-array [1 2 3]) 1) [#float[] [F@5e310a07 1] -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
On Thu, Jun 13, 2013 at 10:52 AM, Jim - FooBar(); jimpil1...@gmail.comwrote: On 13/06/13 18:47, Jim - FooBar(); wrote: On 13/06/13 18:28, Leon Barrett wrote: It shouldn't be necessary to examine the source to know what's going on in a builtin, really, but I also encountered this one recently. The way the extend-protocol macro finds which entries are types and which are function definitions is by checking which are lists. I'm not sure I follow...if we can't have lists that evaluate to Class objects then how am I able to succesfully use (Class/forName [D) as the first extension but not in any other position? should I be using (eval (Class/forName [D)) so the macro definitely receives a Class? You say you've encountered this a lot...can you elaborate? what did you do? If you want to understand why it behaves the way it does, then I do encourage you to read the source(clj/clojure/core_deftype.clj). Basically, it knows the first thing is a type and then uses (take-while seq?) to find that type's methods. extend-protocol is a macro that expands to a bunch of extend-type calls. Just make a bunch of extend-type calls, or make your own macro that makes a bunch of extend-type calls. many many thanks, Jim or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? Jim -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscribe@**googlegroups.comclojure%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/**group/clojure?hl=enhttp://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/** topic/clojure/0TJ-Kl3CsDk/**unsubscribehttps://groups.google.com/d/topic/clojure/0TJ-Kl3CsDk/unsubscribe . To unsubscribe from this group and all its topics, send an email to clojure+unsubscribe@**googlegroups.comclojure%2bunsubscr...@googlegroups.com . For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
We are using Clojure at Two Sigma to monitor, schedule, and optimize our cluster. On a related note, we're hiring: http://functionaljobs.com/jobs/149-distributed-systems-developer-at-two-sigma-investments On Monday, June 10, 2013 5:47:25 PM UTC-4, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Making cryptograms, my first Clojure function. Feedback welcome.
Looks nice, although I like Dan's explicit definition of char sequences. One thing that threw me at first was the double arg in the function #(encrypt % %). It took a while before I realized you were supplying each character as both the map key value and a default return value (thus, a non-alphanumeric char like * would come through w/o translation). While this works, what I would do instead is be more explicit that only certain chars are allowed in the first place. So, I'd add a filter up front that would throw an exception if any non-alphanumeric char were encountered. I can't tell you how many times this fail-fast type of behavior has saved me, since it makes bugs easy to find rather than burying the cause of a problem (kinda like getting an error at compile-type instead of at runtime). Alan Thompson On Wed, Jun 12, 2013 at 5:30 PM, Shannon Severance s...@s53.me wrote: Thank you all, I've learned something from each entry. My latest version, incorporating some of the changes suggested: (defn make-crypto [] (let [lower (map char (range (int \a) (inc (int \z upper (map char (range (int \A) (inc (int \Z digit (map char (range (int \0) (inc (int \9 [sl su sd] (map shuffle [lower upper digit]) encrypt (zipmap (concat lower upper digit) (concat sl su sd))] (fn [s] (apply str (map #(encrypt % %) s) I specified the range the way I did because I wanted meaningful start and end points, I don't have the code points for many characters memorized. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Clojure generates unnecessary and slow type-checks
Hi. I've been working with people at Prismatic to optimize some simple math code in Clojure. However, it seems that Clojure generates an unnecessary type check that slows our (otherwise-optimized) code by 50%. Is there a good way to avoid this, is it a bug in Clojure 1.5.1, or something else? What should I do to work around this? Here's my example. The aget seems to generate an unnecessary checkcastbytecode. I used Jasper and Jasmin to decompile and recompile Bar.class into Bar_EDITED.class, without that bytecode. The edited version takes about 2/3 the time. (ns demo (:import demo.Bar_EDITED)) (definterface Foo (arraysum ^double [^doubles a ^int i ^int asize ^double sum])) (deftype Bar [] Foo (arraysum ^double [this ^doubles a ^int i ^int asize ^double sum] (if ( i asize) (recur a (unchecked-inc-int i) asize (+ sum (aget a i))) sum))) (defn -main [ args] (let [bar (Bar.) bar-edited (Bar_EDITED.) asize 1 a (double-array asize) i 0 ntimes 1] (time (dotimes [iter ntimes] (.arraysum bar a i asize 0))) (time (dotimes [iter ntimes] (.arraysum bar-edited a i asize 0) ;; $ lein2 run -m demo ;; Compiling demo ;; Elapsed time: 191.015885 msecs ;; Elapsed time: 129.332 msecs Here's the bytecode for Bar.arraysum: public java.lang.Object arraysum(double[], int, int, double); Code: 0: iload_2 1: i2l 2: iload_3 3: i2l 4: lcmp 5: ifge 39 8: aload_1 9: iload_2 10: iconst_1 11: iadd 12: iload_3 13: dload 4 15: aload_1 16: aconst_null 17: astore_1 18: checkcast #60 // class [D 21: iload_2 22: invokestatic #64 // Method clojure/lang/RT.intCast:(I)I 25: daload 26: dadd 27: dstore4 29: istore_3 30: istore_2 31: astore_1 32: goto 0 35: goto 44 38: pop 39: dload 4 41: invokestatic #70 // Method java/lang/Double.valueOf:(D)Ljava/lang/Double; 44: areturn As far as I can tell, Clojure generated a checkcast opcode that tests on every loop to make sure the double array is really a double array. When I remove that checkcast, I get a 1/3 speedup (meaning it's a 50% overhead). Can someone help me figure out how to avoid this overhead? Thanks. - Leon Barrett -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: while loop
Thanks guys i have now have a bunch of solutions to try out ;)
Josh
On Thu, Jun 13, 2013 at 8:57 PM, Aaron Cohen aa...@assonance.org wrote:
I like the StackOverflow answer for this:
http://stackoverflow.com/questions/5419125/using-java-api-from-clojure-reading-zip-file
(defn entries [zipfile]
(enumeration-seq (.entries zipfile)))
(defn walkzip [fileName]
(with-open [z (java.util.zip.ZipFile. fileName)]
(doseq [e (entries z)]
(println (.getName e)
On Thu, Jun 13, 2013 at 1:25 PM, Leon Barrett lbarr...@climate.comwrote:
Yeah, Clojure's while construct isn't really good at stuff like that. A
loop is the basic thing I reach for, and I'd probably write it as:
(loop []
(when-let [entry (.getNextEntry stream)]
(println entry)
(recur)))
On Thursday, June 13, 2013 10:20:22 AM UTC-7, Josh Kamau wrote:
Hi there ;
How do i implement the following in clojure
while((entry = stream.getNextEntry())!=null) {
System.out.println(entry.**getName());
}
NOTE: calling getNextEntry moves the curse to the next entry.
CONTEXT: I am trying to list the contents of a .zip file using
http://docs.oracle.com/javase/**6/docs/api/java/util/zip/**ZipInputStream.html
http://docs.oracle.com/javase/6/docs/api/java/util/zip/ZipInputStream.html
Regards.
Josh
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[ANN] edn-java 0.4.2 released
edn-java [1] is a parser and printer for edn [2]. This release fixes issue #32 [3] EDN List, Vector types indistinguishable due to common RandomAccess interface. It should be available on Maven Central within a day. // Ben [1] http://edn-java.bpsm.us [2] https://github.com/edn-format/edn [3] https://github.com/bpsm/edn-java/issues/3https://github.com/bpsm/edn-java/issues/31 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 --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
I wish I could...if I do that I can't call amap on any other primitive array but the first extended - I get the exception I posted earlier and it has nothing to do with type hinting the array. I'm type-hinting it in both cases: IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80) ok it's starting t get annoying so let's work with a concrete example: (defprotocol FOO (bar [this a] [this a b])) (extend-protocol FOO (Class/forName [D) (bar ([this a] (amap ^doubles this idx ret (a (aget ^doubles this idx) 10.0))) ([this a b] (bar this #(apply a %1 (list %2 b) ) user= (bar (double-array 1) +) #double[] [D@6239ae30 user= (seq *1) (10.0) Right, all is well! let's carry on...I'm going to copy-paste the code-block above only changing the 'doubles'-floats (extend-protocol FOO (Class/forName [F) (bar ([this a] (amap ^floats this idx ret (a (aget ^floats this idx) (float 10 ([this a b] (bar this #(apply a %1 (list %2 b) ) user= (bar (float-array 1) +) IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80) any other type I try from now onwards will fail with the same exception. Could it be because Clojure changes the types internally to longs? I don't understand!forgive me but I'm a bit annoyed with this... Jim On 13/06/13 19:02, Aaron Cohen wrote: On Thu, Jun 13, 2013 at 1:52 PM, Jim - FooBar(); jimpil1...@gmail.com mailto:jimpil1...@gmail.com wrote: or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? You can call extend-protocol several times: user= (defprotocol A (foo [a b])) A user= (extend-protocol A (Class/forName [D) (foo [a b] [a b])) nil user= (extend-protocol A (Class/forName [F) (foo [a b] [a b])) nil user= (foo (double-array [1 2 3]) 1) [#double[] [D@5a12d46c 1] user= (foo (float-array [1 2 3]) 1) [#float[] [F@5e310a07 1] -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
At The Climate Corporation http://www.climate.com/ (formerly Weatherbill), we do much, though not all, of our development in Clojure. On Thursday, June 13, 2013 11:45:42 AM UTC-7, dgrnbrg wrote: We are using Clojure at Two Sigma to monitor, schedule, and optimize our cluster. On a related note, we're hiring: http://functionaljobs.com/jobs/149-distributed-systems-developer-at-two-sigma-investments On Monday, June 10, 2013 5:47:25 PM UTC-4, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: bug in 'extend-protocol' ???
an epiphany finally!!! while writing my response previously I realised that adding 2 numbers of different type usuallly returns either a double or a long. That was the source of confusion... I need to coerce whatever number my fn is returning to the type the array is expecting (duh!) I feel properly stupid now! thanks all of you who bothered responding... Jim On 13/06/13 21:03, Jim - FooBar(); wrote: I wish I could...if I do that I can't call amap on any other primitive array but the first extended - I get the exception I posted earlier and it has nothing to do with type hinting the array. I'm type-hinting it in both cases: IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80) ok it's starting t get annoying so let's work with a concrete example: (defprotocol FOO (bar [this a] [this a b])) (extend-protocol FOO (Class/forName [D) (bar ([this a] (amap ^doubles this idx ret (a (aget ^doubles this idx) 10.0))) ([this a b] (bar this #(apply a %1 (list %2 b) ) user= (bar (double-array 1) +) #double[] [D@6239ae30 user= (seq *1) (10.0) Right, all is well! let's carry on...I'm going to copy-paste the code-block above only changing the 'doubles'-floats (extend-protocol FOO (Class/forName [F) (bar ([this a] (amap ^floats this idx ret (a (aget ^floats this idx) (float 10 ([this a b] (bar this #(apply a %1 (list %2 b) ) user= (bar (float-array 1) +) IllegalArgumentException No matching method found: aset clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:80) any other type I try from now onwards will fail with the same exception. Could it be because Clojure changes the types internally to longs? I don't understand!forgive me but I'm a bit annoyed with this... Jim On 13/06/13 19:02, Aaron Cohen wrote: On Thu, Jun 13, 2013 at 1:52 PM, Jim - FooBar(); jimpil1...@gmail.com mailto:jimpil1...@gmail.com wrote: or can you perhaps show an example of successfully extending any protocol to at least 2 primitive array types? You can call extend-protocol several times: user= (defprotocol A (foo [a b])) A user= (extend-protocol A (Class/forName [D) (foo [a b] [a b])) nil user= (extend-protocol A (Class/forName [F) (foo [a b] [a b])) nil user= (foo (double-array [1 2 3]) 1) [#double[] [D@5a12d46c 1] user= (foo (float-array [1 2 3]) 1) [#float[] [F@5e310a07 1] -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
Hey, just recently I've completed my first full Clojure client project, the new identity for Leeds College of Music. Some pretty pictures: http://flickr.com/toxi/sets/72157630719227308/ The project is a 3-tier system, consisting of: 1) OSX app with custom OpenGL GUI to create preview new brand assets 2) web app to manage/track render jobs, EC2 instances generated assets 3) on-demand render farm running on EC2 to render and transcode high res print video assets. The identity is based on a dual strange attractor particle system, which is computed using OpenCL (approx. 500-800M particles per video frame). Students at the college can upload their own music via the render manager web app to create audioresponsive versions of the logo and embed the generated videos via a custom JS player widget. Key libraries (incl. some of the best I've ever used): * JOGL JOCL -- bindings for OpenGL/CL * amazonica -- S3, SQS, EC2 * liberator, hiccup, compojure, ring -- render manager API * http-kit, clj-http -- server etc. * clutch -- CouchDB * clostache, markdown-clj -- email templates documentation * postal -- email notifications * timbre -- logging ...of my own (public) ones, but which still largely await some more TLC before recommended public consumption: * http://hg.postspectacular.com/simplecl/ - Clojure - OpenCL * http://hg.postspectacular.com/structgen/ - C struct/typedef parser * http://hg.postspectacular.com/rotor/ - rotating logs Also, Lein's profile system itself was invaluable for configuring the different project tiers from a single project.clj (made even better together w/ the lein-environ plugin). A big thank you to all the authors! Best, K. On 13 June 2013 18:03, Thom Lawrence t...@thom.org.uk wrote: getprismatic.com, orderharmony.com, www.rocketli.st are consumer focused apps written in Clojure. FlightCaster is hard to miss. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure generates unnecessary and slow type-checks
Taking a step back, the core problem we're trying to solve is just to sum
an array's values as quickly as in Java. (We really want to write a fancier
macro that allows arbitrary computations beyond summing that can't be
achieved by just calling into Java, but this simpler task gets at the crux
of our performance issues).
This Java code:
public static double asum_noop_indexed(double[] arr) {
double s = 0;
for (int i = 0; i arr.length; i++) {
s += arr[i];
}
return s;
}
can run on an array with 10k elements in about 8 microseconds. In contrast,
this Clojure code (which I believe used to be as fast as the Java in a
previous Clojure version):
(defn asum-identity [^doubles a]
(let [len (long (alength a))]
(loop [sum 0.0
idx 0]
(if ( idx len)
(let [ai (aget a idx)]
(recur (+ sum ai) (unchecked-inc idx)))
sum
executes on the same array in about 40 microseconds normally, or 14
microseconds with *unchecked-math* set to true. (We weren't using
unchecked-math properly until today, which is why we were doing the hacky
interface stuff above, please disregard that -- but I think the core point
about an extra cast is still correct).
For reference, (areduce a1 i r 0.0 (+ (aget a1 i) r)) takes about 23 ms to
do the same computation (with unchecked-math true).
Does anyone have ideas for how to achieve parity with Java on this task?
They'd be much appreciated!
Thanks, Jason
On Thursday, June 13, 2013 12:02:56 PM UTC-7, Leon Barrett wrote:
Hi. I've been working with people at Prismatic to optimize some simple
math code in Clojure. However, it seems that Clojure generates an
unnecessary type check that slows our (otherwise-optimized) code by 50%. Is
there a good way to avoid this, is it a bug in Clojure 1.5.1, or something
else? What should I do to work around this?
Here's my example. The aget seems to generate an unnecessary
checkcastbytecode. I used Jasper and Jasmin to decompile and recompile
Bar.class
into Bar_EDITED.class, without that bytecode. The edited version takes
about 2/3 the time.
(ns demo
(:import demo.Bar_EDITED))
(definterface Foo
(arraysum ^double [^doubles a ^int i ^int asize ^double sum]))
(deftype Bar []
Foo
(arraysum ^double [this ^doubles a ^int i ^int asize ^double sum]
(if ( i asize)
(recur a (unchecked-inc-int i) asize (+ sum (aget a i)))
sum)))
(defn -main [ args]
(let [bar (Bar.)
bar-edited (Bar_EDITED.)
asize 1
a (double-array asize)
i 0
ntimes 1]
(time
(dotimes [iter ntimes]
(.arraysum bar a i asize 0)))
(time
(dotimes [iter ntimes]
(.arraysum bar-edited a i asize 0)
;; $ lein2 run -m demo
;; Compiling demo
;; Elapsed time: 191.015885 msecs
;; Elapsed time: 129.332 msecs
Here's the bytecode for Bar.arraysum:
public java.lang.Object arraysum(double[], int, int, double);
Code:
0: iload_2
1: i2l
2: iload_3
3: i2l
4: lcmp
5: ifge 39
8: aload_1
9: iload_2
10: iconst_1
11: iadd
12: iload_3
13: dload 4
15: aload_1
16: aconst_null
17: astore_1
18: checkcast #60 // class [D
21: iload_2
22: invokestatic #64 // Method
clojure/lang/RT.intCast:(I)I
25: daload
26: dadd
27: dstore4
29: istore_3
30: istore_2
31: astore_1
32: goto 0
35: goto 44
38: pop
39: dload 4
41: invokestatic #70 // Method
java/lang/Double.valueOf:(D)Ljava/lang/Double;
44: areturn
As far as I can tell, Clojure generated a checkcast opcode that tests on
every loop to make sure the double array is really a double array. When I
remove that checkcast, I get a 1/3 speedup (meaning it's a 50% overhead).
Can someone help me figure out how to avoid this overhead?
Thanks.
- Leon Barrett
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Re: Clojure in production
Just for completeness' sake, my two pence: https://groups.google.com/d/msg/clojure/Z995K48BZGA/IDSAEm-PKFkJ On Monday, June 10, 2013 5:47:25 PM UTC-4, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
On Thu, Jun 13, 2013 at 2:41 AM, Philip Potter philip.g.pot...@gmail.com wrote: PuppetDB is another: http://docs.puppetlabs.com/puppetdb/latest/index.html We use PuppetDB at GOV.UK for host management and reporting purposes. Nobody else on my team really knows clojure, but nobody has to care because PuppetDB is self-contained. That has a fair bit of air-play in the wild, and has been trouble-free the whole time. I can probably dig out some numbers from our marketing department about how widely used it is, if y'all are interested. -- Daniel Pittman ♲ Made with 100 percent post-consumer electrons -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
On Monday, June 10, 2013 3:47:25 PM UTC-6, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Puppet Labs (http://puppetlabs.com) uses Clojure in some of our internal tools, commercial projects, and open source stuff. I gave a talk on PuppetDB (https://github.com/puppetlabs/puppetdb) at Clojure/West a few months ago. It's currently in production at ~10k installations across the planet. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
We've used Clojure at Copious (http://copious.com) to build our activity feed (http://www.youtube.com/watch?v=0l7Va3-wXeI) and a number of backend services. We're definitely looking to use it even more in the future: it's the cat's pajamas. On Thu, Jun 13, 2013 at 2:07 PM, Deepak Giridharagopal dee...@puppetlabs.com wrote: On Monday, June 10, 2013 3:47:25 PM UTC-6, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Puppet Labs (http://puppetlabs.com) uses Clojure in some of our internal tools, commercial projects, and open source stuff. I gave a talk on PuppetDB (https://github.com/puppetlabs/puppetdb) at Clojure/West a few months ago. It's currently in production at ~10k installations across the planet. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
We use Clojure in some backend services in Trend Micro. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
At rewryte.com, we use Clojure for all our back- end data processing. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure in production
We're building a few clojure projects at IOOF (a large Australian
superannuation firm) - the biggest is a transformation and routing system
for communicating with other superannuation companies, written in clojure
for the back end, and angular.js for the UI.
(It's technically in production but the actual go-live is in a few weeks.)
I talked about this at the local Yow Lambda Jam conference a few weeks ago
- the slides should be up at
http://www.yowconference.com.au/lambdajam/Program.html soon. (they are
actually there now, but seem to be corrupted...)
- Korny
On 14 June 2013 12:53, Zhemin Lin lin.zhe...@gmail.com wrote:
We use Clojure in some backend services in Trend Micro.
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Re: Clojure in production
We use Clojure across several APIs and for data analysis at SmartBIM in Atlanta, and we're hiring! Send me an email at stuart.hinson at the company's domain if you're local and interested On Thursday, June 13, 2013 5:07:07 PM UTC-4, Deepak Giridharagopal wrote: On Monday, June 10, 2013 3:47:25 PM UTC-6, Plinio Balduino wrote: Hi there I'm writing a talk about Clojure in the real world and I would like to know, if possible, which companies are using Clojure for production or to make internal tools. Puppet Labs (http://puppetlabs.com) uses Clojure in some of our internal tools, commercial projects, and open source stuff. I gave a talk on PuppetDB (https://github.com/puppetlabs/puppetdb) at Clojure/West a few months ago. It's currently in production at ~10k installations across the planet. Thank you Plínio Balduino -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
On 14 Jun 2013 05:37, Ron Toland rontol...@gmail.com wrote: At rewryte.com, we use Clojure for all our back- end data processing. Sure, but I was rather looking for actual applications that can be downloaded and installed locally. It wasn't really my intention to compile a list of companies that use Clojure somewhere in their web stack (that would simply be a duplicate of the Clojure in production thread). Thanks Wolodja -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
On 13 Jun 2013 11:42, Philip Potter philip.g.pot...@gmail.com wrote: PuppetDB is another: http://docs.puppetlabs.com/puppetdb/latest/index.html We use PuppetDB at GOV.UK for host management and reporting purposes. Nobody else on my team really knows clojure, but nobody has to care because PuppetDB is self-contained. Ah, wonderful. This is exactly what I was looking for (self-contained, open source application that appeals to users unfamiliar with Clojure). Ta! On 13 June 2013 10:01, Wolodja Wentland babi...@gmail.com wrote: Hi all, I was recently trying to find some applications written in Clojure that are meant for end users. The aim was to find those that would be interesting to a user even though the user does not know anything about Clojure or that the application is written in it. Given that Clojure is not that young anymore I was a bit surprised to find only Riemann [0] and Semira [1] out there among thousands of libraries or development tools. Can you think of others? What are Clojure's killer applications ? [0] http://riemann.io/ [1] https://github.com/remvee/semira/ -- Wolodja babi...@gmail.com 4096R/CAF14EFC 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: End user applications
On 13 Jun 2013 15:31, Aaron Cohen aa...@assonance.org wrote: What about Overtone? http://overtone.github.io/ Overtone is certainly great, but I would rather classify it as a library as you still have to write programs to use it. There might be an independent UI these days that I am unfamiliar with though. On Thu, Jun 13, 2013 at 5:01 AM, Wolodja Wentland babi...@gmail.com wrote: Hi all, I was recently trying to find some applications written in Clojure that are meant for end users. The aim was to find those that would be interesting to a user even though the user does not know anything about Clojure or that the application is written in it. Given that Clojure is not that young anymore I was a bit surprised to find only Riemann [0] and Semira [1] out there among thousands of libraries or development tools. Can you think of others? What are Clojure's killer applications ? [0] http://riemann.io/ [1] https://github.com/remvee/semira/ -- Wolodja babi...@gmail.com 4096R/CAF14EFC 081C B7CD FF04 2BA9 94EA 36B2 8B7F 7D30 CAF1 4EFC -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
