Re: ANN: Mid November 2012 London Clojure Dojo at Forward
I'm going to tag along and tinker with Incanter in the office. Would love some help if anyone else is interested. On Thursday, November 8, 2012 9:58:28 PM UTC, Bruce Durling wrote: Roll up! Roll up! On 19 November at 7PM hosted by our friends Forward in Camden is the next London Clojure Dojo! http://mid-november-2012-ldnclj-dojo.eventbrite.co.uk/ Food! Beer! Clojure! I hope to see you all there! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: [ldnclj] Re: ANN: Mid November 2012 London Clojure Dojo at Forward
Sounds good to me. You could always write that one up on the whiteboard on Monday. ;-) cheers, Bruce On Thu, Nov 15, 2012 at 9:38 AM, Paul Lam paul@forward.co.uk wrote: I'm going to tag along and tinker with Incanter in the office. Would love some help if anyone else is interested. On Thursday, November 8, 2012 9:58:28 PM UTC, Bruce Durling wrote: Roll up! Roll up! On 19 November at 7PM hosted by our friends Forward in Camden is the next London Clojure Dojo! http://mid-november-2012-**ldnclj-dojo.eventbrite.co.uk/http://mid-november-2012-ldnclj-dojo.eventbrite.co.uk/ Food! Beer! Clojure! I hope to see you all there! -- You received this message because you are subscribed to the Google Groups London Clojurians group. To view this discussion on the web visit https://groups.google.com/d/msg/london-clojurians/-/RYcNTQQCvn8J. To post to this group, send email to london-clojuri...@googlegroups.com. To unsubscribe from this group, send email to london-clojurians+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/london-clojurians?hl=en. -- @otfrom | CTO co-founder @MastodonC | mastodonc.com -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
[lein-cljsbuild] exclude a cljs from compilation
Hi all,
my question is the following:
- I like to have the usual brepl connect to the browser during development
- I like to have the same source-base (e.g. :source-path src/cljs) for both
the development and production builds (e.g. :builds {:prod {.} {:dev
{.} of :cljsbuild keyword)
Is there a way in lein-cljsbuild to reach this goal? I'd like to write
something like this in :prod build
(defproject
:cljsbuild {:builds
{:dev {:source-path src/cljs
:compiler :output-to
resources/public/js/main_debug.js
:optimizations :whitespace
:pretty-print true}}
:prod {:source-path src/cljs
;;; here a key/values to exclude some file in
:source-path from compilation, something like :exclude [afil.cljs
another-file.cljs]
:compiler :output-to resources/public/js/main.js
:optimizations :advanced}})
Thanks for the attention
Mimmo
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core.logic matche with maps
Hello everybody,
recently I was using the following pattern a lot, in order to get access to
a value inside a map:
(defn map-geto* [m k v]
(matche [m]
([[[k v] . _]])
([[_ . tail]] (map-geto* tail k v
I can use that like this:
(run* [q] (map-geto* (seq {:key value}) :key q))
which return (value). But after some thought I realized that I am
essentially doing a linear-search on the map instead of leveraging the
advantage of maps: fast-lookup of a value for a key.
So I wanted to ask: does anybody know of a way to re-write this function,
so it uses map-destructuring instead, while still being general enough so
it can be used on a map with any data?
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Difference between JVM and CLR when destructuring a lazy sequence
I believe I have discovered differing behavior between the JVM and CLR implementations when running the following statement: user (let [foo (repeatedly (fn [] (let [r (rand)] (println in-repeat: r) r))) [f rst] foo] (println return: f)) When run on the JVM with clojure 1.4.0, I get the following output: in-repeat: 0.6929552277817549 in-repeat: 0.7005322422752974 return: 0.6929552277817549 nil user When run on the CLR with clojure-clr 1.4.0, the random number will be printed from in-repeat infinitely, never to return. Is this difference between the JVM and CLR implementations when destructuring a lazy sequence known? Also, why was the random number printed twice on the JVM side. I haven't looked an the implementation, but I would guess this would be due to chunking the sequence. Thanks. -Frank Failla -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
ClojureScript; How to set a field in an external JS library?
Hi, I have an external JS library I want to use and I can call methods on objects from the external library successful, but how do I set fields of on external library? Do I need to put this in an externs.js file? and if yes, how exactly? If I do this: (let [msg (js/Messaging.Message. hello world) ] (js/console.log msg) (.-destinationName msg test-topic) I get this error: Compiling resources/public/js/cljs.js failed: java.lang.Error: Unknown dot form of (. msg -destinationName (test-topic)) with classification [:cljs.analyzer/expr :cljs.analyzer/property :cljs.analyzer/expr] And I can see msg in the console with its various fields. TIA, Thomas -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: ClojureScript; How to set a field in an external JS library?
Perhaps this thread can help : javascript propertieshttps://groups.google.com/d/msg/clojure/P6fK5KsShs8/hJaAbIGo5FYJ Le jeudi 15 novembre 2012 17:26:33 UTC+1, Thomas a écrit : Hi, I have an external JS library I want to use and I can call methods on objects from the external library successful, but how do I set fields of on external library? Do I need to put this in an externs.js file? and if yes, how exactly? If I do this: (let [msg (js/Messaging.Message. hello world) ] (js/console.log msg) (.-destinationName msg test-topic) I get this error: Compiling resources/public/js/cljs.js failed: java.lang.Error: Unknown dot form of (. msg -destinationName (test-topic)) with classification [:cljs.analyzer/expr :cljs.analyzer/property :cljs.analyzer/expr] And I can see msg in the console with its various fields. TIA, Thomas -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: ClojureScript; How to set a field in an external JS library?
Try: (set! (.-destinationName msg) test-topic) http://himera.herokuapp.com/index.html -FS. On Nov 15, 2012, at 11:26 AM, Thomas th.vanderv...@gmail.com wrote: Hi, I have an external JS library I want to use and I can call methods on objects from the external library successful, but how do I set fields of on external library? Do I need to put this in an externs.js file? and if yes, how exactly? If I do this: (let [msg (js/Messaging.Message. hello world) ] (js/console.log msg) (.-destinationName msg test-topic) I get this error: Compiling resources/public/js/cljs.js failed: java.lang.Error: Unknown dot form of (. msg -destinationName (test-topic)) with classification [:cljs.analyzer/expr :cljs.analyzer/property :cljs.analyzer/expr] And I can see msg in the console with its various fields. TIA, Thomas -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: ClojureScript; How to set a field in an external JS library?
Thank you Frank!!! That did the trick (DOH) Thomas On Thursday, November 15, 2012 4:40:53 PM UTC, FrankS wrote: Try: (set! (.-destinationName msg) test-topic) http://himera.herokuapp.com/index.html -FS. On Nov 15, 2012, at 11:26 AM, Thomas th.van...@gmail.com javascript: wrote: Hi, I have an external JS library I want to use and I can call methods on objects from the external library successful, but how do I set fields of on external library? Do I need to put this in an externs.js file? and if yes, how exactly? If I do this: (let [msg (js/Messaging.Message. hello world) ] (js/console.log msg) (.-destinationName msg test-topic) I get this error: Compiling resources/public/js/cljs.js failed: java.lang.Error: Unknown dot form of (. msg -destinationName (test-topic)) with classification [:cljs.analyzer/expr :cljs.analyzer/property :cljs.analyzer/expr] And I can see msg in the console with its various fields. TIA, Thomas -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Proposed change to let- syntax
Hi all,
I find the proposed function let- in Clojure 1.5 very useful, but a bit
ugly. The arguments are backwards when compared to vanilla let, and it
doesn't support destructuring where it easily could (which I believe would
be helpful when threading 'state-like' maps, as I find let- very useful
for).
I'd like to float an alternative implementation which improves on both
these issues. Thoughts?
(defmacro new-let-
Establishes bindings as provided for let, evaluates the first form
in the lexical context of that binding, then re-establishes bindings
to that result, repeating for each successive form
[bindings forms]
(assert (vector? bindings) binding must be a vector)
(assert (= 2 (count bindings)) binding vector must contain exactly two
forms)
`(let [~@bindings
~@(interleave (repeat (bindings 0)) (drop-last forms))]
~(last forms)))
(new-let- [{:keys [foo bar] :as state} {:foo 1 :bar 2}]
(assoc state :foo (inc bar))
(assoc state :bar (inc foo))) ; = {:foo 3, :bar 4}
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Re: Difference between JVM and CLR when destructuring a lazy sequence
Binding to [ rst] must realize an element of the sequence, to determine if there are any left, and it promises to never bind (), only nil. On Thursday, November 15, 2012 7:23:05 AM UTC-8, ffailla wrote: I believe I have discovered differing behavior between the JVM and CLR implementations when running the following statement: user (let [foo (repeatedly (fn [] (let [r (rand)] (println in-repeat: r) r))) [f rst] foo] (println return: f)) When run on the JVM with clojure 1.4.0, I get the following output: in-repeat: 0.6929552277817549 in-repeat: 0.7005322422752974 return: 0.6929552277817549 nil user When run on the CLR with clojure-clr 1.4.0, the random number will be printed from in-repeat infinitely, never to return. Is this difference between the JVM and CLR implementations when destructuring a lazy sequence known? Also, why was the random number printed twice on the JVM side. I haven't looked an the implementation, but I would guess this would be due to chunking the sequence. Thanks. -Frank Failla -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
How to write this in idiomatic Clojure code?
Hi, Would you please help me to morph this to an idiomatic Clojure ? (defn crazy [input] (if (instance? SomeClass input) (seq (process-some-class-instance input)) (map crazy (:children input Thanks for help and time. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: How to write this in idiomatic Clojure code?
That code is clear enough that I wouldn't feel obligated to change it
if I encountered it.
You could also
(defmulti crazy class)
(defmethod crazy SomeClass [input]
(seq (process-some-class-instance input))
(defmethod crazy :default [{:keys [children]}]
(map crazy children))
On Thu, Nov 15, 2012 at 5:33 PM, Hussein B. hubaghd...@gmail.com wrote:
Hi,
Would you please help me to morph this to an idiomatic Clojure ?
(defn crazy [input]
(if (instance? SomeClass input)
(seq (process-some-class-instance input))
(map crazy (:children input
Thanks for help and time.
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Re: Proposed change to let- syntax
Where did you find the proposal? I can't find any info about let- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: code waiting on something - cannot debug - driving me insane!!!
Hi Jim, isn't that just due to the fact that closing the Swing frame kills the nrepl server JVM, but not the REPL client? Also discussed here: https://groups.google.com/forum/?fromgroups=#!topic/leiningen/QLcZIK2e5C0 I agree, it's annoying, but not sure how to workaround it? Maybe with a heartbeat between nrepl client/server with the client closing the repl session if the heartbeat been missing for x seconds... Hth! K. On 13 November 2012 23:25, Jim - FooBar(); jimpil1...@gmail.com wrote: The original project is already on github...I just committed the dummy namespace as well so you can have a look... so, do: git clone https://github.com/jimpil/Clondie24.git cd Clondie24 lein2 repl (load-file Clondie24.games.dummy.clj) (ns Clondie24.games.dummy) (-main) then close the frame without doing anything and try evaluating anything (e.g (:name details)). it goes without saying that the same thing happens in all other proper games as well... thanks a million for looking into this :-) Jim On 13/11/12 22:35, Laurent PETIT wrote: Could you create a small lein2 project on github with what you previously pasted in this thread correctly spread over files, etc., so that it's really quick to reproduce the error? Thanks, Laurent Sent from a smartphone, please excuse the brevity/typos. Le 13 nov. 2012 ą 22:52, Jim - FooBar(); jimpil1...@gmail.com a écrit : On 13/11/12 21:45, Dave Ray wrote: Dump the JVM's threads [1] and see what it's stuck on? What am I looking for? I don't see anything related with my project...IT is pretty obvious from the output though that everything is waiting! No clue what though... Jim - 2012-11-13 21:47:16 Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.2-b09 mixed mode): Thread-11 prio=10 tid=0x7f4268022800 nid=0x1fc8 waiting on condition [0x7f4258338000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d270 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at clojure.tools.nrepl.transport$fn_transport$fn__1008.invoke(transport.clj:41) at clojure.tools.nrepl.transport.FnTransport.recv(transport.clj:28) at reply.eval_modes.nrepl$main$fn__1451.invoke(nrepl.clj:154) at clojure.lang.AFn.run(AFn.java:24) at java.lang.Thread.run(Thread.java:722) NonBlockingInputStreamThread daemon prio=10 tid=0x7f42685d9000 nid=0x1fc5 in Object.wait() [0x7f4258439000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on 0xc286b100 (a jline.internal.NonBlockingInputStream) at jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:278) - locked 0xc286b100 (a jline.internal.NonBlockingInputStream) at java.lang.Thread.run(Thread.java:722) process reaper daemon prio=10 tid=0x7f42685d5000 nid=0x1fbf waiting on condition [0x7f4258461000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d7e8 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) clojure-agent-send-off-pool-3 prio=10 tid=0x7f4214005000 nid=0x1fbd runnable [0x7f425856] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398) at java.net.ServerSocket.implAccept(ServerSocket.java:522) at java.net.ServerSocket.accept(ServerSocket.java:490) at clojure.tools.nrepl.server$accept_connection.invoke(server.clj:32) at clojure.core$binding_conveyor_fn$fn__3989.invoke(core.clj:1822) at clojure.lang.AFn.applyToHelper(AFn.java:161) at
Re: Proposed change to let- syntax
Check git commit logs from a month or so ago. Rich Hickey committed it. Andy Sent from my iPhone On Nov 15, 2012, at 2:41 PM, Mark Engelberg mark.engelb...@gmail.com wrote: Where did you find the proposal? I can't find any info about let- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: How to write this in idiomatic Clojure code?
The snippet I provided, is an idiomatic Clojure ?
On Friday, November 16, 2012 12:41:31 AM UTC+2, Jay Fields wrote:
That code is clear enough that I wouldn't feel obligated to change it
if I encountered it.
You could also
(defmulti crazy class)
(defmethod crazy SomeClass [input]
(seq (process-some-class-instance input))
(defmethod crazy :default [{:keys [children]}]
(map crazy children))
On Thu, Nov 15, 2012 at 5:33 PM, Hussein B. hubag...@gmail.comjavascript:
wrote:
Hi,
Would you please help me to morph this to an idiomatic Clojure ?
(defn crazy [input]
(if (instance? SomeClass input)
(seq (process-some-class-instance input))
(map crazy (:children input
Thanks for help and time.
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Re: How to write this in idiomatic Clojure code?
Am I right in guessing that your input is some kind of tree where Someclass instances are leafs and non-leaf nodes are represented by maps having a :children key? Sent from a smartphone, please excuse the brevity/typos. Le 15 nov. 2012 à 23:33, Hussein B. hubaghd...@gmail.com a écrit : Hi, Would you please help me to morph this to an idiomatic Clojure ? (defn crazy [input] (if (instance? SomeClass input) (seq (process-some-class-instance input)) (map crazy (:children input Thanks for help and time. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: How to write this in idiomatic Clojure code?
Yes true. If it is leaf , do process-some-class-instance If it is not, then it could hold a collection of nodes and leafs (a mixture) Actually , I'm checking tree-seq but I don't know how to use it in my case. Any ideas ? On Friday, November 16, 2012 1:06:22 AM UTC+2, lpetit wrote: Am I right in guessing that your input is some kind of tree where Someclass instances are leafs and non-leaf nodes are represented by maps having a :children key? Sent from a smartphone, please excuse the brevity/typos. Le 15 nov. 2012 à 23:33, Hussein B. hubag...@gmail.com javascript: a écrit : Hi, Would you please help me to morph this to an idiomatic Clojure ? (defn crazy [input] (if (instance? SomeClass input) (seq (process-some-class-instance input)) (map crazy (:children input Thanks for help and time. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com javascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Proposed change to let- syntax
For reference, the current implementationhttps://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L6753 . On 15 November 2012 22:44, Andy Fingerhut andy.finger...@gmail.com wrote: Check git commit logs from a month or so ago. Rich Hickey committed it. Andy Sent from my iPhone On Nov 15, 2012, at 2:41 PM, Mark Engelberg mark.engelb...@gmail.com wrote: Where did you find the proposal? I can't find any info about let- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- *Alex Nixon* Software Engineer | SwiftKey *a...@swiftkey.net** | http://www.swiftkey.net/* ++ WINNER - MOST INNOVATIVE MOBILE APPhttp://www.swiftkey.net/swiftkey-wins-most-innovative-app-at-mwc - GSMA GLOBAL MOBILE AWARDS 2012 Head office: 91-95 Southwark Bridge Road, London, SE1 0AX TouchType is a limited company registered in England and Wales, number 06671487. Registered office: 91-95 Southwark Bridge Road, London, SE1 0AX -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: code waiting on something - cannot debug - driving me insane!!!
Wow! Unbelievable ! So there is nothing wrong with my code? After reading this thread, it seems like a serious issue...the entire repl becomes unusable which greatly limits the interactive experience. But then, what happens in Eclipse? the same principle applies? From my experience with Java I know that eclipse spawns a new VM every time you run a projectwhat's happening there? why does eclipse crash completely? btw, thanks for spotting this :-) ...at least now i can stop fiddling with my code and start looking for a workaround towards the right direction. Hiding the frame temporarily, would allow me to at least work easier. I'll try tomorrow... Jim On 15/11/12 22:42, Karsten Schmidt wrote: Hi Jim, isn't that just due to the fact that closing the Swing frame kills the nrepl server JVM, but not the REPL client? Also discussed here: https://groups.google.com/forum/?fromgroups=#!topic/leiningen/QLcZIK2e5C0 I agree, it's annoying, but not sure how to workaround it? Maybe with a heartbeat between nrepl client/server with the client closing the repl session if the heartbeat been missing for x seconds... Hth! K. On 13 November 2012 23:25, Jim - FooBar(); jimpil1...@gmail.com wrote: The original project is already on github...I just committed the dummy namespace as well so you can have a look... so, do: git clone https://github.com/jimpil/Clondie24.git cd Clondie24 lein2 repl (load-file Clondie24.games.dummy.clj) (ns Clondie24.games.dummy) (-main) then close the frame without doing anything and try evaluating anything (e.g (:name details)). it goes without saying that the same thing happens in all other proper games as well... thanks a million for looking into this :-) Jim On 13/11/12 22:35, Laurent PETIT wrote: Could you create a small lein2 project on github with what you previously pasted in this thread correctly spread over files, etc., so that it's really quick to reproduce the error? Thanks, Laurent Sent from a smartphone, please excuse the brevity/typos. Le 13 nov. 2012 ą 22:52, Jim - FooBar(); jimpil1...@gmail.com a écrit : On 13/11/12 21:45, Dave Ray wrote: Dump the JVM's threads [1] and see what it's stuck on? What am I looking for? I don't see anything related with my project...IT is pretty obvious from the output though that everything is waiting! No clue what though... Jim - 2012-11-13 21:47:16 Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.2-b09 mixed mode): Thread-11 prio=10 tid=0x7f4268022800 nid=0x1fc8 waiting on condition [0x7f4258338000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d270 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at clojure.tools.nrepl.transport$fn_transport$fn__1008.invoke(transport.clj:41) at clojure.tools.nrepl.transport.FnTransport.recv(transport.clj:28) at reply.eval_modes.nrepl$main$fn__1451.invoke(nrepl.clj:154) at clojure.lang.AFn.run(AFn.java:24) at java.lang.Thread.run(Thread.java:722) NonBlockingInputStreamThread daemon prio=10 tid=0x7f42685d9000 nid=0x1fc5 in Object.wait() [0x7f4258439000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on 0xc286b100 (a jline.internal.NonBlockingInputStream) at jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:278) - locked 0xc286b100 (a jline.internal.NonBlockingInputStream) at java.lang.Thread.run(Thread.java:722) process reaper daemon prio=10 tid=0x7f42685d5000 nid=0x1fbf waiting on condition [0x7f4258461000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d7e8 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at
Re: Proposed change to let- syntax
Thanks Alex. My two cents is that your syntax is more the way I'd expect it to look, starting off like an actual let with support for destructuring, followed by the forms. Only advantage I can think of for the one in core is that it enforces that you only have one binding. Basing let- off of let notation might cause people to think you could bind multiple vars to values in the initial bracketed part; that would be somewhat nonsensical. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: code waiting on something - cannot debug - driving me insane!!!
Oops! I can use :dispose instead of :exit. If it does what it implies, it should do the job... Jim On 15/11/12 23:29, Jim - FooBar(); wrote: Wow! Unbelievable ! So there is nothing wrong with my code? After reading this thread, it seems like a serious issue...the entire repl becomes unusable which greatly limits the interactive experience. But then, what happens in Eclipse? the same principle applies? From my experience with Java I know that eclipse spawns a new VM every time you run a projectwhat's happening there? why does eclipse crash completely? btw, thanks for spotting this :-) ...at least now i can stop fiddling with my code and start looking for a workaround towards the right direction. Hiding the frame temporarily, would allow me to at least work easier. I'll try tomorrow... Jim On 15/11/12 22:42, Karsten Schmidt wrote: Hi Jim, isn't that just due to the fact that closing the Swing frame kills the nrepl server JVM, but not the REPL client? Also discussed here: https://groups.google.com/forum/?fromgroups=#!topic/leiningen/QLcZIK2e5C0 I agree, it's annoying, but not sure how to workaround it? Maybe with a heartbeat between nrepl client/server with the client closing the repl session if the heartbeat been missing for x seconds... Hth! K. On 13 November 2012 23:25, Jim - FooBar(); jimpil1...@gmail.com wrote: The original project is already on github...I just committed the dummy namespace as well so you can have a look... so, do: git clone https://github.com/jimpil/Clondie24.git cd Clondie24 lein2 repl (load-file Clondie24.games.dummy.clj) (ns Clondie24.games.dummy) (-main) then close the frame without doing anything and try evaluating anything (e.g (:name details)). it goes without saying that the same thing happens in all other proper games as well... thanks a million for looking into this :-) Jim On 13/11/12 22:35, Laurent PETIT wrote: Could you create a small lein2 project on github with what you previously pasted in this thread correctly spread over files, etc., so that it's really quick to reproduce the error? Thanks, Laurent Sent from a smartphone, please excuse the brevity/typos. Le 13 nov. 2012 ą 22:52, Jim - FooBar(); jimpil1...@gmail.com a écrit : On 13/11/12 21:45, Dave Ray wrote: Dump the JVM's threads [1] and see what it's stuck on? What am I looking for? I don't see anything related with my project...IT is pretty obvious from the output though that everything is waiting! No clue what though... Jim - 2012-11-13 21:47:16 Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.2-b09 mixed mode): Thread-11 prio=10 tid=0x7f4268022800 nid=0x1fc8 waiting on condition [0x7f4258338000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d270 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at clojure.tools.nrepl.transport$fn_transport$fn__1008.invoke(transport.clj:41) at clojure.tools.nrepl.transport.FnTransport.recv(transport.clj:28) at reply.eval_modes.nrepl$main$fn__1451.invoke(nrepl.clj:154) at clojure.lang.AFn.run(AFn.java:24) at java.lang.Thread.run(Thread.java:722) NonBlockingInputStreamThread daemon prio=10 tid=0x7f42685d9000 nid=0x1fc5 in Object.wait() [0x7f4258439000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on 0xc286b100 (a jline.internal.NonBlockingInputStream) at jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:278) - locked 0xc286b100 (a jline.internal.NonBlockingInputStream) at java.lang.Thread.run(Thread.java:722) process reaper daemon prio=10 tid=0x7f42685d5000 nid=0x1fbf waiting on condition [0x7f4258461000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for 0xc286d7e8 (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359) at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
Re: Proposed change to let- syntax
Thanks for the comments. Regarding the bindings, I'd point out that if-let and when-let already work this way (enforcing one binding) and so it isn't introducing any inconsistency. On 15 November 2012 23:34, Mark Engelberg mark.engelb...@gmail.com wrote: Thanks Alex. My two cents is that your syntax is more the way I'd expect it to look, starting off like an actual let with support for destructuring, followed by the forms. Only advantage I can think of for the one in core is that it enforces that you only have one binding. Basing let- off of let notation might cause people to think you could bind multiple vars to values in the initial bracketed part; that would be somewhat nonsensical. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- *Alex Nixon* Software Engineer | SwiftKey *a...@swiftkey.net** | http://www.swiftkey.net/* ++ WINNER - MOST INNOVATIVE MOBILE APPhttp://www.swiftkey.net/swiftkey-wins-most-innovative-app-at-mwc - GSMA GLOBAL MOBILE AWARDS 2012 Head office: 91-95 Southwark Bridge Road, London, SE1 0AX TouchType is a limited company registered in England and Wales, number 06671487. Registered office: 91-95 Southwark Bridge Road, London, SE1 0AX -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Difference between JVM and CLR when destructuring a lazy sequence
The difference is that the JVM version is correct and the CLR implementation has a bug. I'll fix it in the current branch and try to get a patched 1.4 out as soon as I can. -- Above is all you really need to know, but I find myself forced to continue. :) -- This bug has sitting there from the first commit in the public repo. (That would be early 2009.) The line of code in question is testing for the IList interface. The line has a comment that the JVM implementation changed from IList to RandomAccess, which has no equivalent in the CLR. I didn't know why the change was made, so I left it alone. (The history is lost, but I can place the JVM version change between Nov 08 and Feb 09.) Four years later, I've just discovered the reason. The bug only surfaces in certain circumstances on infinite (lazy) sequences -- and specifically it is triggered by destructuring. LazySeq itself is not the problem -- that's used everywhere. -David On Thursday, November 15, 2012 9:23:05 AM UTC-6, ffailla wrote: I believe I have discovered differing behavior between the JVM and CLR implementations when running the following statement: user (let [foo (repeatedly (fn [] (let [r (rand)] (println in-repeat: r) r))) [f rst] foo] (println return: f)) When run on the JVM with clojure 1.4.0, I get the following output: in-repeat: 0.6929552277817549 in-repeat: 0.7005322422752974 return: 0.6929552277817549 nil user When run on the CLR with clojure-clr 1.4.0, the random number will be printed from in-repeat infinitely, never to return. Is this difference between the JVM and CLR implementations when destructuring a lazy sequence known? Also, why was the random number printed twice on the JVM side. I haven't looked an the implementation, but I would guess this would be due to chunking the sequence. Thanks. -Frank Failla -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Proposed change to let- syntax
The primary point of let- is that you can insert it into an existing -
pipeline.
(- foo
(stuff)
(blah)
(let- foo-with-stuff
(for [x foo-with-stuff]
(inc x)))
Your proposal breaks this.
On Thursday, November 15, 2012 10:35:59 AM UTC-8, Alex Nixon wrote:
Hi all,
I find the proposed function let- in Clojure 1.5 very useful, but a bit
ugly. The arguments are backwards when compared to vanilla let, and it
doesn't support destructuring where it easily could (which I believe would
be helpful when threading 'state-like' maps, as I find let- very useful
for).
I'd like to float an alternative implementation which improves on both
these issues. Thoughts?
(defmacro new-let-
Establishes bindings as provided for let, evaluates the first form
in the lexical context of that binding, then re-establishes bindings
to that result, repeating for each successive form
[bindings forms]
(assert (vector? bindings) binding must be a vector)
(assert (= 2 (count bindings)) binding vector must contain exactly two
forms)
`(let [~@bindings
~@(interleave (repeat (bindings 0)) (drop-last forms))]
~(last forms)))
(new-let- [{:keys [foo bar] :as state} {:foo 1 :bar 2}]
(assoc state :foo (inc bar))
(assoc state :bar (inc foo))) ; = {:foo 3, :bar 4}
--
*Alex Nixon*
Software Engineer | SwiftKey
*al...@swiftkey.net javascript:** | http://www.swiftkey.net/*
++
WINNER - MOST INNOVATIVE MOBILE
APPhttp://www.swiftkey.net/swiftkey-wins-most-innovative-app-at-mwc
- GSMA GLOBAL MOBILE AWARDS 2012
Head office: 91-95 Southwark Bridge Road, London, SE1 0AX TouchType is a
limited company registered in England and Wales, number 06671487.
Registered office: 91-95 Southwark Bridge Road, London, SE1 0AX
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Re: Proposed change to let- syntax
On Thu, Nov 15, 2012 at 5:17 PM, Alan Malloy a...@malloys.org wrote: The primary point of let- is that you can insert it into an existing - pipeline. That makes sense. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Nested/inner classes with gen-class
Googled and asked on the IRC channel, but I can't find a solution. Maybe
someone here can help :)
I'm trying to generate nested/inner classes with gen-class. I can't just
write the classes in Java because I'm generating them off of data
structures declared in Clojure. For context, I'm taking an Avro schema
with arbitrarily nested records and building a Java API for working with
objects to be (de-)serialized. I can hack around the problem by generating
a bunch of classes at the top level, but since the nested records aren't
needed elsewhere, inner classes make the most sense.
Basically, I have this:
{:name foo.Bar
:type record
:fields [
{:name Baz
:type record
:fields [
{:name quux
:type int}]}]}
and I want to walk it and generate a class that can be used as if it were
written in Java as:
package foo;
public class Bar {
class Baz {
private int quux;
public int getQuux() {
return quux;
}
public void setQuux(int quux) {
this.quux = quux;
}
}
private Baz baz;
public Bar() {
this.baz = new Baz();
}
public Baz getBaz() {
return baz;
}
public void setBaz(Baz baz) {
this.baz = baz;
}
}
I can do this except for the inner class bit (I would really like to load
the class immediately, but gen-and-load-class seems to have disappeared
leaving only gen-class :-/ ) I can generate foo.Bar and foo.BarBaz, but
that seems awkward and unnecessary if I could generate the inner class.
This seems to compile in a file by itself:
(gen-class 'foo.Bar$Baz
; ... stuff ... )
But when another file references it:
(ns whatever
(:import foo.Bar$Baz))
clojure asplodes, even when manually AOT compiling the files in order.
Any solution?
Thanks!
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freeing resources while generating lazy sequences
Hey Folks, I am writing a thin Clojure wrapper around leveldbjni https://github.com/fusesource/leveldbjni Leveldbjni provides an iterator to walk over all key, value pairs in the database. I am trying to translate this iterator functionality in to a Clojure lazy sequence. I've built my function, but I hit a couple of issues in the process that I would like to float by the wise Clojure sages on this list... 1. I seemed unable to use iterator-seq on the iterator. I assumed this was because leveldbjni is faking an iterator interface due to cpp/jni interop. Can anyone confirm this? 2. I need to close the iterator to free the resource. This seems to make it difficult to build an efficient lazy sequence? One option is to open, seek, close to generate the next pair in the sequence but I'm pretty sure this would turn an O(N) iteration in to an O(N^2) iteration. Also, the DB will get large so I'd rather not slurp everything in to memory. Maybe I could slurp in chunks? Is anyone able to add/improve/comment on this? At risk of diverting the focus of this post to my mediocre Clojure code, here's my function to date for completeness sake. Please note that I am a Clojure noob :) (defn pairs Lazy sequence of key, value pairs in the database ([db] (let [iter (.iterator db)] (.seekToFirst iter) (pairs db iter))) ([db iter] (lazy-seq (if (.hasNext iter) (let [pair (.peekNext iter) pair-key (JniDBFactory/asString (.getKey pair)) pair-value (JniDBFactory/asString (.getValue pair)) _ (.next iter)] (cons [pair-key pair-value] (pairs db iter))) nil All help greatly appreciated. Many thanks, Alex. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: How to write this in idiomatic Clojure code?
(map #(seq (process-some-class-instance %)) (tree-seq map? :children input)) Sent from a smartphone, please excuse the brevity/typos. Le 16 nov. 2012 à 00:13, Hussein B. hubaghd...@gmail.com a écrit : Yes true. If it is leaf , do process-some-class-instance If it is not, then it could hold a collection of nodes and leafs (a mixture) Actually , I'm checking tree-seq but I don't know how to use it in my case. Any ideas ? On Friday, November 16, 2012 1:06:22 AM UTC+2, lpetit wrote: Am I right in guessing that your input is some kind of tree where Someclass instances are leafs and non-leaf nodes are represented by maps having a :children key? Sent from a smartphone, please excuse the brevity/typos. Le 15 nov. 2012 à 23:33, Hussein B. hubag...@gmail.com javascript: a écrit : Hi, Would you please help me to morph this to an idiomatic Clojure ? (defn crazy [input] (if (instance? SomeClass input) (seq (process-some-class-instance input)) (map crazy (:children input Thanks for help and time. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com javascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
How to add the comment of a function into the compiled java class
Hi, I try add Clojure into a Java project. Therefore I write my code in Clojure and then compile the clj-File to Java classes and use these compiled classes in my Javacode. My problem is, that the commentary I wrote for the clojure function is not shown in the compiled java class or the method defined in 'gen-class'. Is it possible to generate a Javadoc from clojure files or is there a parameter available for :gen-class which generates the javadoc which can be displayed my my IDE? (As IDE I use Eclipse with the Counterclockwise Plugin.) -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: [lein-cljsbuild] exclude a cljs from compilation
Hi Mimmo,
Unfortunately, there's no way to do that right now. I can't even think of
a decent workaround (although that doesn't mean there isn't one).
This is part of a more general problem, which is that each build can only
have a single :source-path and is not otherwise customizable. If you could
specify a vector of :source-paths, you could solve this problem pretty
easily. And once there was support for that, things like :exclude would be
easy to implement.
If you wouldn't mind, please create a new issue, or maybe just add to this
one: https://github.com/emezeske/lein-cljsbuild/issues/108 .
Thanks,
-Evan
On Thursday, November 15, 2012 6:56:45 AM UTC-7, Mimmo Cosenza wrote:
Hi all,
my question is the following:
- I like to have the usual brepl connect to the browser during development
- I like to have the same source-base (e.g. :source-path src/cljs) for
both the development and production builds (e.g. :builds {:prod {.}
{:dev {.} of :cljsbuild keyword)
Is there a way in lein-cljsbuild to reach this goal? I'd like to write
something like this in :prod build
(defproject
:cljsbuild {:builds
{:dev {:source-path src/cljs
:compiler :output-to
resources/public/js/main_debug.js
:optimizations :whitespace
:pretty-print true}}
:prod {:source-path src/cljs
;;; here a key/values to exclude some file in
:source-path from compilation, something like :exclude [afil.cljs
another-file.cljs]
:compiler :output-to
resources/public/js/main.js
:optimizations :advanced}})
Thanks for the attention
Mimmo
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