Re: A ClojureScript One Question: Why is so much html created on the client side.
Hello, thank you very much for your comments! I didn't know before about the term SPA (http://en.wikipedia.org/wiki/Single-page_application) I guess a sign of being too Conservative (-: ! I am trying to re-implement a swing app with clojure script. Before seeing Clojurescriptone I was only considering clojurescript for creating widgets like navigation trees or content tables or wizards. Now that you all pointed me to SPA I looked at some websites using this technic and can see and admire the smoothness factor. On the other hand my users won't mind waiting a second or two for new content on main context switches. So maybe I can use a hybrid approach. I just am a little afraid of depending too much on cljs . Not because of the language but I still think that the server is so much more predictable than the browser. Many Thanx! John Am Samstag, 11. August 2012 00:43:09 UTC+2 schrieb Brenton: Hello John, ClojureScript One is an example of a single-page application. This means that you get one page load from the server and everything else happens in the browser without any further page loads. The initial page that is loaded is dynamically generated on the server. Any other updates to the page are performed from JavaScript by manipulating the DOM. If you are making requests to the server for every new page then it makes sense to dynamically generate HTML there. The whole point of a single-page application is to make the application more responsive by reducing both the number of requests and the amount of data that is transferred over a network. Imbedding HTML templates in JavaScript means that those templates are only transferred over the network once. I hope this helps, Brenton On Friday, August 10, 2012 6:21:00 AM UTC-4, john wrote: Hello, I am just trying to understand the best practices in ClojureScript One. One thing that strikes me is that most html gets put (with the help of macros using enlive) in the actual cljs page. As someone who hasn't done web-applications for years I myself would have created as much dynamic html content as possible on the server. But yet ClojureScript One seems to prefer to have all html in maps and render it on the client? I also looked at Chris Granger's crate library and it seems to also follow this principle. Since I consider Chris Granger and Brento Ashworth to be web experts I would just like to know the disadvantages of having most html rendered on the server? Many Greetings John -- 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 measure pieces of Clojure code?
Visualvm is quite nice and simple to use. On 10 Aug 2012 23:21, Hussein B. hubaghd...@gmail.com wrote: Hi, I want to measure how much space an algorithm is taking and then trying to change some aspects to see how things are going to differ. I also want to measure how much time it takes to complete an operation. What tools can I use? 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 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 and regular expr.
dear all , i am trying a search a string in a clojure map data and then want to return the result to be viewed in webpage so using clojurescript .but regular expr. of clojure is not supported it seems as error is showing when lein cljsbuild ...how to work around thru this? any example? thanks in advance Vincent -- 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 and regular expr.
Could you please post the relevant code? Note that clojurescript uses Javascript regular expression syntax and not javas Am 11.08.2012 17:02 schrieb Vincent vincent@gmail.com: dear all , i am trying a search a string in a clojure map data and then want to return the result to be viewed in webpage so using clojurescript .but regular expr. of clojure is not supported it seems as error is showing when lein cljsbuild ...how to work around thru this? any example? thanks in advance Vincent -- 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: Any chance for Ratio and BigInt support in ClojureScript?
On Sun, Aug 5, 2012 at 10:43 PM, Olaf Delgado-Friedrichs olaf.delg...@googlemail.com wrote: Thanks for the link! I didn't know that the Closure library contained an arbitrary precision type, but should have expected it. When you speak of performance, do you mean the extra cost of checking argument types for the arithmetic operators? I wonder if this could be addressed by introducing alternate operators +', -' and *' as in Clojure, make these support the additional numeric types and leave the existing operators alone. This is certainly something that makes sense for me to do in a library. In order to support the BigInt and Ratio literals, would I have to modify the ClojureScript sources, or is it possible to extend emit-constant in user space? Olaf Sorry, forgot to follow up this. I haven't put any deep thought into it so I can offer no implementation guidance. I think it will be pretty challenging to get full Clojure JVM numeric semantics into ClojureScript w/o impacting performance. It can probably be done but requires both a comprehensive design and good implementation strategy. If someone wants to take it on ... great! David -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Better ideas how to collect analytics data
Using maps in clojure is very idiomatic if the structure fits to your data. Do you experience performance problems? Dependent on the data you are modeling you could split the master maps in several smaller ones. If performance gets really important you can use records instead of maps. It would be helpful to know what data you are modeling Am 10.08.2012 21:52 schrieb Hussein B. hubaghd...@gmail.com: Hi, I'm collecting analytics data. I used a master map that holds many other nested maps. Considering maps are immutable, many new maps are going to be allocated. (Yes, that is efficient in Clojure). Basic operation that I'm using is update-in , very convenient. Do you have a better idea how to collect these data more efficiently in Clojure? 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
use pmap but ensure that original ordering is retained?
Hi all,
I was wondering what assumptions does pmap take with regards to the
ordering of the resulting seq? Can I assume it retains the original
ordering or does it just cons whatever future returns earlier? In other
words can I do this and feel safe?
---
(defn min-max [root? depth dir board]
(if (zero? depth) (score b) ;reached bottom level - evaluate board
(let [mapper (if root? 'pmap 'map) ;if at root-node create futures
team (filter #(= dir (:direction %)) board) ;all the
team-mates (with same direction)
successors (concat (map #(core/getMoves %) team)) ;concat all
potential moves
result (- successors
(map core/try-move) ;try them all (producing boards)
(mapper (partial min-max false (dec depth) (-
dir];pass the resulting boards back to recursion with direction inverted
(get (vec successors)
(.indexOf result (apply max result))
(def search (partial min-max true))
It seems to me like a very succinct and idiomatic way to implement the
min-max algorithm, the only problem is this line:
(get (vec successors) (.indexOf result (apply max result)))
It assumes that the initial ordering of moves ('successors') has been
preserved throughout the recursion and so I can use .indexOf to go from
the score back to the move that started it all! Is this the case? I am
suspecting not! any suggestions?
Thanks in advance,
Jim
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core.logic: (run* [q] (membero :x #{:x})) - ()
Hi, fellow logic programmers!
Shouldn't `membero' work with sets?
I notice that
(run* [q] (membero :x #{:x}))
returns no results while
(run* [q] (membero :x (seq #{:x})))
returns the (in my opinion) correct result: (:x).
Can someone explain this behavior to me? It seems strange.
--
Moritz Ulrich
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Re: core.logic: (run* [q] (membero :x #{:x})) - ()
On Sat, Aug 11, 2012 at 2:14 PM, Moritz Ulrich mor...@tarn-vedra.de wrote:
Hi, fellow logic programmers!
Shouldn't `membero' work with sets?
I notice that
(run* [q] (membero :x #{:x}))
returns no results while
(run* [q] (membero :x (seq #{:x})))
returns the (in my opinion) correct result: (:x).
Can someone explain this behavior to me? It seems strange.
--
Moritz Ulrich
It doesn't work with sets. And it can't. If you want to understand
why: look at the implementation of membero and look at an
implementation of member in Prolog.
David
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Re: use pmap but ensure that original ordering is retained?
Yes, pmap behaves as map with respect to the ordering of the elements
of the resulting sequence.
// ben
On Sat, Aug 11, 2012 at 9:29 PM, Jim - FooBar(); jimpil1...@gmail.com wrote:
Hi all,
I was wondering what assumptions does pmap take with regards to the ordering
of the resulting seq? Can I assume it retains the original ordering or does
it just cons whatever future returns earlier? In other words can I do this
and feel safe?
---
(defn min-max [root? depth dir board]
(if (zero? depth) (score b) ;reached bottom level - evaluate board
(let [mapper (if root? 'pmap 'map) ;if at root-node create futures
team (filter #(= dir (:direction %)) board) ;all the team-mates
(with same direction)
successors (concat (map #(core/getMoves %) team)) ;concat all
potential moves
result (- successors
(map core/try-move) ;try them all (producing boards)
(mapper (partial min-max false (dec depth) (- dir];pass the
resulting boards back to recursion with direction inverted
(get (vec successors)
(.indexOf result (apply max result))
(def search (partial min-max true))
It seems to me like a very succinct and idiomatic way to implement the
min-max algorithm, the only problem is this line:
(get (vec successors) (.indexOf result (apply max result)))
It assumes that the initial ordering of moves ('successors') has been
preserved throughout the recursion and so I can use .indexOf to go from the
score back to the move that started it all! Is this the case? I am
suspecting not! any suggestions?
Thanks in advance,
Jim
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Re: clojurescript and regular expr.
code entry is a map entry , to-match is string for (defn matchName [ entry to-match] (let [match-str (.toLowerCase to-match) str-pattern (re-pattern (str ( match-str ))) m (re-matcher str-pattern (.toLowerCase (:name entry)))] (when (re-find m) entry))) how to incorporate js code here? thanks On Sunday, August 12, 2012 12:04:53 AM UTC+5:30, Maik Schünemann wrote: Could you please post the relevant code? Note that clojurescript uses Javascript regular expression syntax and not javas Am 11.08.2012 17:02 schrieb Vincent vince...@gmail.com javascript:: dear all , i am trying a search a string in a clojure map data and then want to return the result to be viewed in webpage so using clojurescript .but regular expr. of clojure is not supported it seems as error is showing when lein cljsbuild ...how to work around thru this? any example? thanks in advance Vincent -- 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
