Re: [ANN] silc - a tiny entity database for clojure (games)
Is it possible to retrieve all entities with a set of attributes, regardless of the attribute values? On Wed, 3 Dec 2014 06:19 Atamert Ölçgen mu...@muhuk.com wrote: I don't feed trolls. On Wed, Dec 3, 2014 at 10:10 AM, Atamert Ölçgen mu...@muhuk.com wrote: Why are you using BigDecimal's for indices? If you want to go big, isn't BigInt a better choice? Actually, I would just use Long's. (MAX_VALUE = 9223372036854775807) On Wed, Dec 3, 2014 at 10:04 AM, Atamert Ölçgen mu...@muhuk.com wrote: This is a very nice example of abstraction. Using a hash-map is just an implementation detail. However I'd be very interested to hear if there are any other compelling use cases for this. Sparsely populated tables, unstructured anything... We used an EAV abstraction (over SQL) to build a product database. Different product types have very different fields, even same types of product might have different fields sometimes. In hindsight normalized relational tables would have been a better fit (the decision was made before I joined). In your README, the change and delete examples give the impression that they're mutating the db, but they actually return an updated db if I'm not mistaken. On Wed, Dec 3, 2014 at 6:37 AM, dan.stone16...@gmail.com wrote: I have put together a quick library http://github.com/danstone/silc that allows you to manage many entities and their attributes in a pure way with indexing for performance, include composite indexes. The intention of the library is certainly as the basis for an entity component system for games, that is how I am using it. However I'd be very interested to hear if there are any other compelling use cases for this. Pull requests welcome! Thanks, Dan -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Kind Regards, Atamert Ölçgen -+- --+ +++ www.muhuk.com -- Kind Regards, Atamert Ölçgen -+- --+ +++ www.muhuk.com -- Kind Regards, Atamert Ölçgen -+- --+ +++ www.muhuk.com -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] silc - a tiny entity database for clojure (games)
Yes I should probably not be using BigDecimals :) I'll fix this as soon as I can. On Wednesday, December 3, 2014 2:10:53 AM UTC, Atamert Ölçgen wrote: Why are you using BigDecimal's for indices? If you want to go big, isn't BigInt a better choice? Actually, I would just use Long's. (MAX_VALUE = 9223372036854775807) On Wed, Dec 3, 2014 at 10:04 AM, Atamert Ölçgen mu...@muhuk.com javascript: wrote: This is a very nice example of abstraction. Using a hash-map is just an implementation detail. However I'd be very interested to hear if there are any other compelling use cases for this. Sparsely populated tables, unstructured anything... We used an EAV abstraction (over SQL) to build a product database. Different product types have very different fields, even same types of product might have different fields sometimes. In hindsight normalized relational tables would have been a better fit (the decision was made before I joined). In your README, the change and delete examples give the impression that they're mutating the db, but they actually return an updated db if I'm not mistaken. On Wed, Dec 3, 2014 at 6:37 AM, dan.sto...@gmail.com javascript: wrote: I have put together a quick library http://github.com/danstone/silc that allows you to manage many entities and their attributes in a pure way with indexing for performance, include composite indexes. The intention of the library is certainly as the basis for an entity component system for games, that is how I am using it. However I'd be very interested to hear if there are any other compelling use cases for this. Pull requests welcome! Thanks, Dan -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com javascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- Kind Regards, Atamert Ölçgen -+- --+ +++ www.muhuk.com -- Kind Regards, Atamert Ölçgen -+- --+ +++ www.muhuk.com -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] silc - a tiny entity database for clojure (games)
Is it possible to retrieve all entities with a set of attributes, regardless of the attribute values? Not yet, I haven't indexed for it. You could approximate it using the ave index if you just concat any set of entities under any value. However it would require the attributes you are interested in participating in the ave index. It would be a worthy edition though so I'll look at it unless somebody wants to submit a pull request. Cool project! Did you try using the pldb built into core.logic? I have a similar system built atop pldb backing one of my side projects and I'm very happy with it. I do like pldb and core.logic and have used them in the past - I would very much like to introduce an optional core.logic front-end to this, however it was important to me that the primary interface was perhaps less declarative but with stronger performance guarantees as my use case for this is for game development. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Is there a tool to display all the references to a symbol in a project?
Is there a tool to display all the references to a symbol in a project? Preferably without using emacs. Thanks. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Is there a tool to display all the references to a symbol in a project?
I use grep or ack. It's not exact, but it works. On Wednesday, December 3, 2014, Yehonathan Sharvit vie...@gmail.com wrote: Is there a tool to display all the references to a symbol in a project? Preferably without using emacs. Thanks. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com javascript:_e(%7B%7D,'cvml','clojure@googlegroups.com'); Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com'); For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com');. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Is there a tool to display all the references to a symbol in a project?
I would recommend the silver searcher (ag) if the project is large, as it is much faster. --Ashton Sent from my iPhone On Dec 3, 2014, at 8:34 AM, Gary Trakhman gary.trakh...@gmail.com wrote: I use grep or ack. It's not exact, but it works. On Wednesday, December 3, 2014, Yehonathan Sharvit vie...@gmail.com wrote: Is there a tool to display all the references to a symbol in a project? Preferably without using emacs. Thanks. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Is there a tool to display all the references to a symbol in a project?
Cursive Clojure can do this: alt-f7 the symbol. (But it's not a lightweight tool if that's what you mean by not emacs.) On Wednesday, December 3, 2014 9:16:52 AM UTC-6, Yehonathan Sharvit wrote: Is there a tool to display all the references to a symbol in a project? Preferably without using emacs. Thanks. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Dynamic args in delayed function calls
The last group of examples reminds me of spreadsheet formula cells. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Is there a tool to display all the references to a symbol in a project?
If you're OK with using an editor that's not emacs, most of them have some kind of ctags plugin these days. There's a decent looking ctags config for clojure here http://andrew.stwrt.ca/posts/vim-ctags (haven't tried it myself). On Wed, Dec 3, 2014 at 7:40 AM, Ashton Kemerling ashtonkemerl...@gmail.com wrote: I would recommend the silver searcher (ag) if the project is large, as it is much faster. --Ashton Sent from my iPhone On Dec 3, 2014, at 8:34 AM, Gary Trakhman gary.trakh...@gmail.com wrote: I use grep or ack. It's not exact, but it works. On Wednesday, December 3, 2014, Yehonathan Sharvit vie...@gmail.com wrote: Is there a tool to display all the references to a symbol in a project? Preferably without using emacs. Thanks. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
a library for writing and loading database fixtures - would love feedback
I wrote a little (52 lines) library for writing and loading database fixtures: https://github.com/flyingmachine/vern I'd love any feedback. Could the code be more succinct? Is there a name for this kind of pattern? Do the names make sense? Thanks! Daniel -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Sharable custom reader macros in Clojurescript?
Hi all, how do I add custom reader macros in Clojurescript (like data_readers.clj in Clojure)? I want to deliver them in libraries. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Getting sick and tired of [trace missing]
On Wed, 03 Dec 2014, Fluid Dynamics wrote: It's a giant pain to debug exceptions without stack traces. This seems to be a problem specific to CCW, as I don't encounter it using other development environments. Is this going to be fixed anytime soon? Pseudonymous obnoxious person: You have many options. (a) Submit a (polite) issue to the CCW tracker with sufficient information to reproduce the behavior. If an issue already exists, comment (politely) on the issue to register that it's one toward which you would like the project's volunteers to consider allocating their efforts. (b) If the issue is of sufficient importance to you, offer a bounty (payable in actual money) for an implementation of your desired behavior. If you ask (politely), someone may be willing to implement it for you in exchange for cash. (c) Determine the source of the undesired behavior and implement a fix yourself. I'd suspect the project's maintainers would happily entertain a pull request. If you do not have sufficient knowledge to understand how to approach an implementation, others may be willing to guide you if you ask. Politely. (d) Stop whinging and use the free software. (e) Stop whinging and don't use the free software. (f) Take your whinging somewhere else. Moderators: Many, many people sincerely attempted to help this person during the last round of self-obsessed, abusive entitlement. May I request that you step in if it looks like this thread is going down the same path? I do not wish this community to become one that tolerates incivility. http://jacobian.org/writing/assholes/ Thanks to all of those on this list and behind the scenes who work to support this great programming language, its tooling, and the vibrant ecosystem of libraries. Paul -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Need advice on algorithm performance
Hi, guys!
I have an issue with my function where I use zippers to modify data
structure. The function modifies a tree (parsed grammar tree) to replace
expressions with values from a given map. Sadly, the algorithm I came up
with is pretty slow. I would appreciate if anyone can give me a hint on
what would be the right approach to do what I'm trying to accomplish.
Thanks!
(defn- transform-values [parse-tree values-map]
Replaces all expressions in parsed tree with values from a given map.
(loop [loc (zip/vector-zip parse-tree)]
(if (zip/end? loc)
(zip/root loc)
(if (zip/branch? loc)
(let [id (last (zip/children loc))]
(if (contains? values-map id)
(recur (zip/next (zip/replace loc (zip/node [(get
values-map id)]
(recur (zip/next (zip/edit loc #(into [] (butlast %)))
(recur (zip/next loc)))
)))
(time
(dotimes
[_ 10]
(transform-values
[:DIV [:ADD [:ID P1 exp_1] [:ID P2 exp_2] exp_2419] [:ID P3
exp_3] exp_2418]
{exp_1 100 exp_2 20 exp_3 5})))
Elapsed time: 2317.491 msecs
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Re: perform action after events stop for some period
Erik that's pretty! But be careful about go-loops and closed channels. This will recur infinitely if events-ch is closed (it will continuously return nil) (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[v p] (async/alts! [(async/timeout period) events-ch])] (when v(if (= p events-ch) (recur) (apply f args)) On Monday, December 1, 2014 8:33:10 PM UTC-5, Erik Price wrote: Coincidentally, we recently wrote code to do something very similar. The following function will invoke f after period milliseconds, unless a value is sent on events-ch, in which case the timeout is reset (and starts counting down again): (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[_ p] (async/alts! [(async/timeout period) events-ch])] (if (= p events-ch) (recur) (apply f args)) e On Mon, Dec 1, 2014 at 6:50 PM, Brian Craft craft...@gmail.com javascript: wrote: That version has the unfortunate behavior that (func) can be interrupted if (event) is called while it is running. Here's another version using an agent: (defn queue-with-delay2 [period func] (let [q (agent nil)] (fn [] (send-off q (fn [t] (when t (future-cancel t)) (future (Thread/sleep period) (send-off q (fn [_] (func) nil Running with a sleep to see that (func) is not canceled by subsequence (event) calls: (def event (queue-with-delay2 2000 #(do (println running) (Thread/sleep 2000) (println ending Oddly, if calling (event) between running and ending messages, the repl will stack-overflow on the return value. No idea what that's about. But, running like this is fine: (do (event) nil) On Monday, December 1, 2014 1:37:56 PM UTC-8, Brian Craft wrote: I have need to perform an action when a series of events is quiet for some period. That is, if one event arrives an action is queued to execute after some timeout. If a second event arrives the timeout is reset, and so-forth. The following code seems to work, however I'm wondering if calling 'future' from 'swap!' is a bad idea (side effecting), and if there's a better way. (defn queue-with-delay [period func] (let [f (atom nil)] (fn [] (when @f (future-cancel @f)) (swap! f (fn [_] (future (Thread/sleep period) (func))) Use like (def event (queue-with-delay 2000 #(println running))) (event) (event) (event) ; pause 2 sec running -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com javascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: perform action after events stop for some period
Erik that's pretty! But be careful about go-loops and closed channels. This will recur infinitely if events-ch is closed (it will continuously return nil) (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[v p] (async/alts! [(async/timeout period) events-ch])] (when v (if (= p events-ch) (recur) (apply f args))) will allow the go-loop to return when the channel is closed. On Monday, December 1, 2014 8:33:10 PM UTC-5, Erik Price wrote: Coincidentally, we recently wrote code to do something very similar. The following function will invoke f after period milliseconds, unless a value is sent on events-ch, in which case the timeout is reset (and starts counting down again): (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[_ p] (async/alts! [(async/timeout period) events-ch])] (if (= p events-ch) (recur) (apply f args)) e On Mon, Dec 1, 2014 at 6:50 PM, Brian Craft craft...@gmail.com javascript: wrote: That version has the unfortunate behavior that (func) can be interrupted if (event) is called while it is running. Here's another version using an agent: (defn queue-with-delay2 [period func] (let [q (agent nil)] (fn [] (send-off q (fn [t] (when t (future-cancel t)) (future (Thread/sleep period) (send-off q (fn [_] (func) nil Running with a sleep to see that (func) is not canceled by subsequence (event) calls: (def event (queue-with-delay2 2000 #(do (println running) (Thread/sleep 2000) (println ending Oddly, if calling (event) between running and ending messages, the repl will stack-overflow on the return value. No idea what that's about. But, running like this is fine: (do (event) nil) On Monday, December 1, 2014 1:37:56 PM UTC-8, Brian Craft wrote: I have need to perform an action when a series of events is quiet for some period. That is, if one event arrives an action is queued to execute after some timeout. If a second event arrives the timeout is reset, and so-forth. The following code seems to work, however I'm wondering if calling 'future' from 'swap!' is a bad idea (side effecting), and if there's a better way. (defn queue-with-delay [period func] (let [f (atom nil)] (fn [] (when @f (future-cancel @f)) (swap! f (fn [_] (future (Thread/sleep period) (func))) Use like (def event (queue-with-delay 2000 #(println running))) (event) (event) (event) ; pause 2 sec running -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com javascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: perform action after events stop for some period
Thank you for calling my attention to this possibility! e On Wed, Dec 3, 2014 at 2:49 PM, Dylan Butman dbut...@gmail.com wrote: Erik that's pretty! But be careful about go-loops and closed channels. This will recur infinitely if events-ch is closed (it will continuously return nil) (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[v p] (async/alts! [(async/timeout period) events-ch])] (when v (if (= p events-ch) (recur) (apply f args))) will allow the go-loop to return when the channel is closed. On Monday, December 1, 2014 8:33:10 PM UTC-5, Erik Price wrote: Coincidentally, we recently wrote code to do something very similar. The following function will invoke f after period milliseconds, unless a value is sent on events-ch, in which case the timeout is reset (and starts counting down again): (defn invoke-after-uninterrupted-delay ([period events-ch f] (invoke-after-uninterrupted-delay period events-ch f [])) ([period events-ch f args] (async/go-loop [] (let [[_ p] (async/alts! [(async/timeout period) events-ch])] (if (= p events-ch) (recur) (apply f args)) e On Mon, Dec 1, 2014 at 6:50 PM, Brian Craft craft...@gmail.com wrote: That version has the unfortunate behavior that (func) can be interrupted if (event) is called while it is running. Here's another version using an agent: (defn queue-with-delay2 [period func] (let [q (agent nil)] (fn [] (send-off q (fn [t] (when t (future-cancel t)) (future (Thread/sleep period) (send-off q (fn [_] (func) nil Running with a sleep to see that (func) is not canceled by subsequence (event) calls: (def event (queue-with-delay2 2000 #(do (println running) (Thread/sleep 2000) (println ending Oddly, if calling (event) between running and ending messages, the repl will stack-overflow on the return value. No idea what that's about. But, running like this is fine: (do (event) nil) On Monday, December 1, 2014 1:37:56 PM UTC-8, Brian Craft wrote: I have need to perform an action when a series of events is quiet for some period. That is, if one event arrives an action is queued to execute after some timeout. If a second event arrives the timeout is reset, and so-forth. The following code seems to work, however I'm wondering if calling 'future' from 'swap!' is a bad idea (side effecting), and if there's a better way. (defn queue-with-delay [period func] (let [f (atom nil)] (fn [] (when @f (future-cancel @f)) (swap! f (fn [_] (future (Thread/sleep period) (func))) Use like (def event (queue-with-delay 2000 #(println running))) (event) (event) (event) ; pause 2 sec running -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to
Re: Need advice on algorithm performance
If I understand right, I think you might be able to use the existing
replace functions in clojure.walk. I find that this is about twice as fast:
(time
(dotimes
[_ 10]
(walk/postwalk-replace
{exp_1 100 exp_2 20 exp_3 5}
[:DIV [:ADD [:ID P1 exp_1] [:ID P2 exp_2] exp_2419] [:ID
P3 exp_3] exp_2418])))
Jony
On Wednesday, 3 December 2014 18:49:01 UTC, Dmitriy Morozov wrote:
Hi, guys!
I have an issue with my function where I use zippers to modify data
structure. The function modifies a tree (parsed grammar tree) to replace
expressions with values from a given map. Sadly, the algorithm I came up
with is pretty slow. I would appreciate if anyone can give me a hint on
what would be the right approach to do what I'm trying to accomplish.
Thanks!
(defn- transform-values [parse-tree values-map]
Replaces all expressions in parsed tree with values from a given map.
(loop [loc (zip/vector-zip parse-tree)]
(if (zip/end? loc)
(zip/root loc)
(if (zip/branch? loc)
(let [id (last (zip/children loc))]
(if (contains? values-map id)
(recur (zip/next (zip/replace loc (zip/node [(get
values-map id)]
(recur (zip/next (zip/edit loc #(into [] (butlast %)))
(recur (zip/next loc)))
)))
(time
(dotimes
[_ 10]
(transform-values
[:DIV [:ADD [:ID P1 exp_1] [:ID P2 exp_2] exp_2419] [:ID P3
exp_3] exp_2418]
{exp_1 100 exp_2 20 exp_3 5})))
Elapsed time: 2317.491 msecs
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Re: Getting sick and tired of [trace missing]
This isn't a CCW exclusive issue, but the Oracle JVM 'optimizing away' stacktraces. It can be remedied by adding the '-XX:-OmitStackTraceInFastThrow' flag to the JVM startup parameters of the process you're starting. If Leiningen is used to start the JVM, add the following setting to your lein project.clj map: :jvm-opts ^:replace [-XX:-OmitStackTraceInFastThrow] Oh, and you're welcome.. On Wednesday, December 3, 2014 6:29:23 PM UTC+1, Fluid Dynamics wrote: It's a giant pain to debug exceptions without stack traces. This seems to be a problem specific to CCW, as I don't encounter it using other development environments. Is this going to be fixed anytime soon? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Facebook Graph API via CLS
Hey all, I'm working on a Clojurescript wrapper of Facebook's JS SDK, using Prismatic's schema for documentation / types. Here's the code: https://gist.github.com/sritchie/b517d67f9507aca36399 If anyone here's interested I'd be happy to put a little library up on github with this and the rest of the API. Cheers, Sam -- Sam Ritchie (@sritchie) Paddleguru Co-Founder 703.863.8561 www.paddleguru.com http://www.paddleguru.com/ Twitter http://twitter.com/paddleguru// Facebook http://facebook.com/paddleguru -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] silc - a tiny entity database for clojure (games)
I have released an update to the lib with a new index the `attribute-entity` index, and improved the readme (I hope). Check it out! Regards, Dan -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Getting sick and tired of [trace missing]
The first result of googling jvm [trace missing] is really helpful here. Fluid Dynamics mailto:a2093...@trbvm.com December 3, 2014 at 10:29 AM It's a giant pain to debug exceptions without stack traces. This seems to be a problem specific to CCW, as I don't encounter it using other development environments. Is this going to be fixed anytime soon? -- 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 mailto:clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Sam Ritchie (@sritchie) Paddleguru Co-Founder 703.863.8561 www.paddleguru.com http://www.paddleguru.com/ Twitter http://twitter.com/paddleguru// Facebook http://facebook.com/paddleguru -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] silc - a tiny entity database for clojure (games)
Coincidentally, I put together a similar library a few months ago ( https://github.com/weavejester/ittyon), but I didn't think anyone else would find it useful. It looks like there are more people experimenting with games in Clojure than I thought. - James On 3 December 2014 at 21:30, dan.stone16...@gmail.com wrote: I have released an update to the lib with a new index the `attribute-entity` index, and improved the readme (I hope). Check it out! Regards, Dan -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Getting sick and tired of [trace missing]
I'm sure first thing in the morning there'll be someone at Larry Ellison's door clamoring for removal of hotspot optimization from the JVM.. On Wednesday, December 3, 2014 10:41:34 PM UTC+1, Sam Ritchie wrote: The first result of googling jvm [trace missing] is really helpful here. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Getting sick and tired of [trace missing]
2014-12-03 22:20 GMT+01:00 Niels van Klaveren niels.vanklave...@gmail.com: This isn't a CCW exclusive issue, but the Oracle JVM 'optimizing away' stacktraces. It can be remedied by adding the '-XX:-OmitStackTraceInFastThrow' flag to the JVM startup parameters of the process you're starting. If Leiningen is used to start the JVM, add the following setting to your lein project.clj map: :jvm-opts ^:replace [-XX:-OmitStackTraceInFastThrow] Hello Niels, that's interesting. Would it deserve that CCW adds this option automatically when asked to start a REPL ? I could probably easily do this in both cases : when the REPL start is delegated to Leiningen, or when the REPL is created by ccw by using whatever is in the project's java build path. Do you know if there would be e.g. performance impacts that would be annoying for certain kinds of projects? Oh, and you're welcome.. On Wednesday, December 3, 2014 6:29:23 PM UTC+1, Fluid Dynamics wrote: It's a giant pain to debug exceptions without stack traces. This seems to be a problem specific to CCW, as I don't encounter it using other development environments. Is this going to be fixed anytime soon? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Laurent Petit -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] encors: CORS middleware for Ring apps
Just to let everyone know that we've just released version 2.0 of encors, with these suggested changes in place. The middleware should now feel more Clojure-ish and Ring-ish :) Thanks James for the great feedback. On Wednesday, November 26, 2014 4:31:37 PM UTC-8, Román González wrote: Good points... So possible changes: * Replace the get-policy-for-req argument with a just policy-options map This makes it easier to validate options just once. I guess all the validations done on a simple Request - CorsPolicy function can be done by composing middleware together (e.g. Middleware that check certain header or route + cors middleware). I like this. * Remove the CorsPolicy type and just do the schema validation at the beginning of the middleware. I believe this actionables are feasible. I discuss this internally and develop of all this make sense. Thanks for your feedback James, highly appreciated. Roman.- On Wed, Nov 26, 2014 at 3:43 PM, James Reeves ja...@booleanknot.com javascript: wrote: On 26 November 2014 at 23:08, ro...@unbounce.com javascript: wrote: map-CorsPolicy enforces correctness of input, this way the wrap-cors functions doesn't need to validate data. Probably we can add a call to map-CorsPolicy as the first thing of wrap-cors function and keep this function private. In Clojure, types and validation are orthogonal concepts. You don't need to use deftype in order to validate a map. For instance, you could write your middleware function instead as: (defn wrap-cors [handler options] (s/validate cors-schema options) (fn [request] ...)) Or better yet, perhaps just use s/defn instead. Given that we are returning a Policy per request call, calling a map-CorsPolicy every time we call warp-cors sounds a bit overkill performance wise... Instead of validating development settings once when the namespaces is loaded, it is being validated every time a request comes in. Even though the function wrap-cors returns will be evaluated many times, the wrap-cors function itself will likely only be evaluated once when your handler is created. For instance: (def handler (wrap-cors my-routes cors-options)) This means that there's no performance benefit to creating a type to just contain the option map, particularly since you're not using type hints, so you're accessing the type via reflection. By convention, Ring middleware also takes the handler as the first argument, allowing it to be more easily threaded. - James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
more colloquial do x n times
I've got a decent-sized corpus of tweets, organized by hashtag, in a
CouchDB db. I'm doing some initial explorations of my data, and was curious
about which hashtags show up together in tweets. I want to do a NSA-style
hops kind of algorithm--get all the hashtags that show up in the same
tweets as hashtags that show up in the same tweets as hashtags that show up
in the same tweets as my target hashtag, to an arbitrary depth. I wrote
this:
(defn co-ocs [db ht [s]]
(reduce into (or s #{})
(map #(map :text %)
(map #(get-in % [:entities :hashtags])
(:tweets (clutch/get-document db ht))
(defn co-occurrences [db ht depth]
(loop [tags (co-ocs db 5sos) i 1]
(if (= i depth) (recur
(reduce into tags
(map (partial co-ocs db) tags))
(inc i))
tags)))
It works, but loop + incrementing a counter seems profoundly un-clojuric. I
suppose I could use `dotimes` + an atom, but that doesn't seem much better.
Any suggestions?
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Re: more colloquial do x n times
EDIT
On Wednesday, December 3, 2014 10:45:33 PM UTC-5, Sam Raker wrote:
I've got a decent-sized corpus of tweets, organized by hashtag, in a
CouchDB db. I'm doing some initial explorations of my data, and was curious
about which hashtags show up together in tweets. I want to do a NSA-style
hops kind of algorithm--get all the hashtags that show up in the same
tweets as hashtags that show up in the same tweets as hashtags that show up
in the same tweets as my target hashtag, to an arbitrary depth. I wrote
this:
(defn co-ocs [db ht [s]]
(reduce into (or s #{})
(map #(map :text %)
(map #(get-in % [:entities
:hashtags])
(:tweets (clutch/get-document db ht))
(defn co-occurrences [db ht depth]
(loop [tags (co-ocs db ht) i 1]
(if (= i depth) (recur
(reduce into tags
(map (partial co-ocs db) tags))
(inc i))
tags)))
It works, but loop + incrementing a counter seems profoundly un-clojuric.
I suppose I could use `dotimes` + an atom, but that doesn't seem much
better. Any suggestions?
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Re: Getting sick and tired of [trace missing]
On Wednesday, December 3, 2014 4:20:00 PM UTC-5, Niels van Klaveren wrote: This isn't a CCW exclusive issue, but the Oracle JVM 'optimizing away' stacktraces. It can be remedied by adding the '-XX:-OmitStackTraceInFastThrow' flag to the JVM startup parameters of the process you're starting. If Leiningen is used to start the JVM, add the following setting to your lein project.clj map: :jvm-opts ^:replace [-XX:-OmitStackTraceInFastThrow] Thanks. Some googling had turned up something about that JVM option, but it was by no means obvious how to apply that anywhere but a commandline java -jar ... invocation. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
pack200 unknown attributes
Experimenting with pack200, I get very many warnings like so: Dec 04, 2014 5:11:31 AM com.sun.java.util.jar.pack.Utils$Pack200Logger warning WARNING: Passing class file uncompressed due to unrecognized attribute: clojure/core$long.class Without having any real understanding of what it's doing, it looks like something about the clojure code is defeating compression? Anyone have a clue? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: help with my inefficient instaparse grammar
Use :optimize :memory maybe? Section 10 here seems like your use
case: https://github.com/Engelberg/instaparse/blob/master/docs/Performance.md
Watch htop and see if you have a process that is hitting swap without the
optimization.
-Zack
On Wednesday, December 3, 2014 1:29:23 AM UTC-5, Sunil Nandihalli wrote:
The file I tried it on is here
https://gist.github.com/8c0daef5b832b58c86fa
On Wed, Dec 3, 2014 at 10:28 AM, Sunil S Nandihalli sunil.na...@gmail.com
javascript: wrote:
Hi Everybody,
https://gist.github.com/cced1cf377ed49005704 *instaparse_question.clj*
https://gist.github.com/anonymous/cced1cf377ed49005704#file-instaparse_question-clj
Raw
https://gist.github.com/anonymous/cced1cf377ed49005704/raw/220ff32218839db388261fd8e2489288a0093606/instaparse_question.clj
12345678910111213141516171819202122232425
(ns lua-map-parser.instaparse-question
(:require [instaparse.core :as insta]))
(let [parser (insta/parser
lua-file = {map-decl|return-statement}
map-decl = 'local' identifier '=' '{' { map-entry}
'}' ;
identifier = #'[a-zA-Z\\_][0-9a-zA-Z\\-\\_]*' ;
map-entry = '[' (string|number) ']' '='
(string|number) ;
string = '\\\' #'([^\]|.)*' '\\\' ;
number = integer | decimal ;
decimal = #'-?[0-9]+\\.[0-9]+' ;
integer = #'-?[0-9]+' ;
return-statement = 'return' identifier
:auto-whitespace :comma)]
(defn lua-map-parser [str]
(parser str)))
(lua-map-parser local CTRData = {
[1]=2 ,
[\3\]=4 }
local MYData = { [\hello\] = \world\
[\sunil\] = 1 [\satish\] = \office\
[\dad\]=\home\ }
return CTRData
)
The above grammar simply parses a map in lua-syntax. It works for the
above case. However, when I try to use it on a file that is about 1 MB in
size, it fails(not sure didn't wait longer than 2 minutes). I would love
to hear if there is something that is grossly inefficient in the way I have
represented my grammar. The lua interpreter loads the file in no time (well
0.06 sec) . I would love any feedback on improving the grammar. Thanks
Sunil.
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