Re: What if ^:const could inline everything before macroexpanssion?

symbol bar. It is still the case as before though that the macroexpansion of (foo bar)happens before the symbol bar is resolved and analyzed as a constant expression. Sorry for the mess and confusion. On Wednesday, November 7, 2018 at 11:04:27 AM UTC+1, juan.facorro wrote: > > Th

Re: What if ^:const could inline everything before macroexpanssion?

That's strange, this is what I get in the REPL when evaluating that expression: $ clj Clojure 1.9.0 user=> (. clojure.lang.Numbers (add 10 100)) 110 user=> On Wednesday, November 7, 2018 at 10:01:20 AM UTC+1, Didier wrote: > > Hey, thanks for the deep dive, but I'm not sure I either

Re: What if ^:const could inline everything before macroexpanssion?

The compiler seems to currently use the *:const* hint, to know that it should return the analyzed expression value for the var (as if it was quoted) instead of the *VarExpr* (which would mean a deref at run-time) (see here

Re: loop macro generates a wrapping let

Right, of course! It seems almost obvious now :P Thanks Kevin On Tuesday, March 7, 2017 at 12:42:08 AM UTC+1, red...@gmail.com wrote: > > On 03/06/2017 03:28 PM, juan.facorro wrote: > > While I was debugging some code I found something related to the *loop > > *macro that I

loop macro generates a wrapping let

While I was debugging some code I found something related to the *loop *macro that I found curious. I'm probably missing something but here it goes. The expression generated by the *loop* macro includes a wrapping *let *when there is any de-structuring in the bindings. (require '[clojure.walk

Re: callback before evicting element from cache [core.cache]

An option would be to wrap any of the implementations in core.cache with your own using core.cache/defcache. Every CacheProtocol function would just use the underlying cache, except for the evict where you would handle the closing of the file descriptor. On Tuesday, November 15, 2016 at

Examples of core.async usage in production?

Hi all, >From what I've seen/heard/understand core.async has been mostly used in production on the *client side* or UI programming, since it frees us from the dreaded callback hell. There are some instances where *core.async* is used on the *server side* to provide asynchronous communication

Re: pairwise?

Hi J, I don't think there is a specific function in Clojure equivalent to *pairwise?* but I it might be more idiomatic to use the functions available in clojure.core to manipulate collections. I would implement *pairwise?* in the following way, others might suggest better/simpler ways though:

Re: Joxa (Re: Clojure on an Erlang-vm-os on Xen?)

Hi Sebastian, Thank you for your thoughts. The biggest example is that the BEAM comes with a set of Data Types / Data > Structures and they can't be extended. While this is true, it doesn't mean it is not possible to implement new data structures in Erlang. There are a number of modules that

Re: Clojure on an Erlang-vm-os on Xen?

Hi Frank, I'm wondering why no one ever posted a question/comment/reponse to this thread. Personally I think Clojure is a great language and the Erlang VM is a feat of engineering. I would love to think what other think about this thoughts and about the possibility of having Clojure on the

Clojure Buenos Aires - MeetUp - September, 30th

Hi dear clojurists/clojurers/clojurians, Since we are having our fourth get together end of September, I wanted to announce the existence of the Buenos Aires Clojure MeetUp and invite anyone who might be interested in having a good time and

Re: [ANN] Introducing Yagni, a Leiningen plugin for finding unused code

That's a good point. On Wednesday, June 24, 2015 at 6:53:43 PM UTC-3, Fluid Dynamics wrote: FMIIW, but I think they serve orthogonal purposes. Google Closure finds code (mostly library parts your program doesn't use) that your particular program doesn't need and omits it from the build to

Re: [ANN] Introducing Yagni, a Leiningen plugin for finding unused code

Yehonathan Sharvit, I think Google's Closure compiler already has dead code elimination, so it's available for ClojureScript even if Yagni doesn't provide it :). Cheers, Juan On Wednesday, June 24, 2015 at 5:11:01 AM UTC-3, Yehonathan Sharvit wrote: Does yagni work with cljs projects? On

Re: Clojure for Desktop UI Design Application

Hi Timothy, I took an extremely similar approach in this project https://github.com/jfacorro/clojure-lab using Swing as the underlying UI toolkit. Components can be described using a hiccup like syntax, although they are actually represented as maps in the end. Since the UI is mutable by

Re: Open html file in Clojure

Hi Priyanka, I don't think there's enough information for someone to be able to help you. When you say .html do you mean JavaScript or ClojureScript code? It will be a lot easier to help you, if you share the code from the desktop app and the code you are using to get the location information.

Re: Need advice on algorithm performance

Hi Dmitriy, There's also an alternative zipper implementation called *fast-zip* [1] which seems to be 5 times faster than *clojure.zip*. Although if *clojure.walk* is faster in an order of magnitude or more than *clojure.zip*, then *fast-zip* won't be much of an improvement. Cheers, Juan

Re: perform action after events stop for some period

Hi Brian, I had the same requirement while building an application, it included a GUI and I wanted to perform some actions only after the user was done editing some text. I also first implemented a solution using an atom, Thread/sleep and a future. It didn't seem right though, since I was

Re: debugging MyClass cannot be cast to MyClass exceptions

Hi Brian, This problem usually happens when working on the REPL and you redefine a record or type (derecord and deftype), but there are still some existing instances lying around, that belong to the previous definition of that same type. See this thread for more information:

Re: Clojure / Lisp Developers job listings

Hi all, I just discovered this list of Clojure job postings thanks to a co-worker and just wanted to share with those who might have not heard about it, like me until today :P. http://lispjobs.wordpress.com/ Cheers, Juan On Tuesday, March 9, 2010 1:00:15 PM UTC-3, Will Fitzgerald wrote:

Re: Thnx for clojureconj videos !!

+1 They are being uploaded withing a day or less from the actual recording which is extremely awesome! https://www.youtube.com/playlist?list=PLZdCLR02grLoc322bYirANEso3mmzvCiI On Saturday, November 22, 2014 10:09:04 AM UTC-3, Geraldo Lopes de Souza wrote: Thank you very much for clojureconj

Re: Clojure - Java

Hi Blake, Also, I presume that a Closure program has immediate access to all Java classes and methods without any work. Is that true? Clojure embraces the JVM by providing a number of interoperability features http://clojure-doc.org/articles/language/interop.html that allow you to do

Re: Clojure Survey 2014 - Tag Clouds

, JvmStartup, LongStartupTime, LongStartup, StartupSpeed, StartTime, CompileTime, SlowStartup. -- John On Wednesday, October 29, 2014 10:00:22 AM UTC-4, juan.facorro wrote: Hi All, In case someone was interested in the results and how I got to them, I wrote an article about my attempt

Clojure Survey 2014 - Tag Clouds

Hi All, In case someone was interested in the results and how I got to them, I wrote an article about my attempt to visualize the free-form text answers from Clojure’s (and ClojureScript) Community Survey 2014. Any comments, suggestions or questions are welcome. Clojure Survey 2014 - Tag

Re: Optimizing code : Fun but now paining me

That is a whole lot of code to check and test for optimizations :P How are you identifying the problems in your code that need optimization? Are you doing some kind of profiling or just trying stuff out? If you are not doing it already, I would recommend using VisualVM [1] to get a clearer

Re: Profiling in Counterclockwise

VisualVM has a GUI which is fairly simple to use, you just download it, run it and get a list of all the running JVM instances on your local machine. There's even an option to sample the running code, that shows what functions are taking the most CPU time. If I understood correctly VisualVM is

[Request for Feedback] Clojure Lab: IDE for Clojure in Clojure

Hello Clojurians! I wanted to share with you a project called *Clojure Lab*, an *IDE for Clojure in Clojure*. *https://github.com/jfacorro/clojure-lab https://github.com/jfacorro/clojure-lab* Yes! Another IDE for Clojure, uhm... the more the merrier? This project started as a learning

Re: When to use (ensue) ?

Hi Hussein, Maybe this StackOverflow QA can help in understanding when to use *ensure* : Clojure STM ambiguity factor http://stackoverflow.com/a/17197281/519383. HTH, Juan On Thursday, June 19, 2014 10:35:24 AM UTC-3, Hussein B. wrote: Hi, When dealing with Clojure ref types, when to use

optimal way to generate/store/compare 256/512/1024 bytes

I may be missing something, but why not use gensym to generate unique identifiers if their only purpose is to be used as keys in a map? This should work as long as your map is always built from scratch when your clojura program/app is started. -- You received this message because you are

Re: [soft/philosophical] event handers in cljs

Hi François, That makes sense. I think I had read that discussion a while ago but hadn't really grokked it. Thanks! Juan On Tuesday, March 11, 2014 10:42:04 AM UTC-3, François Rey wrote: On 10/03/14 15:37, juan.facorro wrote: I have taken this approach as well, but I can can't seem

Re: [soft/philosophical] event handers in cljs

Hi Sam, On Sunday, March 9, 2014 11:16:13 PM UTC-3, Sam Ritchie wrote: Well, I typically have multiple channels. No need to have a single global event bus for everything. With multiple channels, you can have a bunch of local event loops. I have taken this approach as well, but I can

Re: Monkey-patching in Clojure

You can also use the intern function to chamge the value of a any var in any namespace. Hope it helps -- 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

Re: partial function revisited (exercise in macros)

When you use *`~p* what you are actually doing is using the symbol of the predicate as a function. For example if you call *(partial-pbm f symbol? 1 x 3)*, the quote-unquote (`~) will return the symbol *symbol?* which is not what you want. What you can do is use the *resolve

Re: JAVA_OPTS not accessible in my Clojure project

Hi Aidy, What do mean when you say load the nRepl in the lein project? Juan On Friday, January 10, 2014 9:42:02 AM UTC-3, Aidy Lewis wrote: Clojurians, For some reason JAVA_OPTS are not accessible in my Clojure project. The command line seems to be OK, if I: $ lein repl project-ns =

Re: How do I fix *warn-on-reflextion* warnings in 3rd party libraries?

Hi Larry, You can use *lein check* which *Check[s] syntax and warn[s] on reflection.* only for the *.clj files in your project's soure files. HTH, Juan On Sunday, December 22, 2013 7:33:56 PM UTC-3, larry google groups wrote: I know this has been discussed before but I could not find

Re: How do I fix *warn-on-reflextion* warnings in 3rd party libraries?

Hi Larry, This is not exactly what you asked but it might be helpful. There's a *check *command in *leiningen* wich *Check[s] syntax and warn[s] on reflection.* only for the **.clj* files in your project's source files. This doesn't really resolve the reflection warnings for the libraries you

Implementation options for auto-complete and symbol resolution while coding

Hi Clojurers, I'm building a tool for Clojure and I've been hitting the same bump for quite some time now, namely auto-completion and finding the definition of a symbol. After doing some research I've found that some tools rely on a running REPL to figure out where a symbol might be coming

I need a vector not a list?

An option for doing performant (numerical) operations with vectors in Clojure is the vectorz-clj [1] library. There's also core.matrix [2] for multi-dimensional matrices in general. Hope it helps, Juan [1]: https://github.com/mikera/vectorz-clj/wiki [2]:

Re: Is The Joy if Clojure up to date?

Same here, Joy of Clojure is an *excellent* book although I wouldn't recommend it as a first book on Clojure. I immensely enjoyed it when I read it, but it was my first book on Clojure and, having just some basic background on Lisp and FP, I felt that a few of really important ideas passed me

Re: quick macro review

Hi Curtis, The *apply* is unnecessary if you use *unquote-splice* (*~@*), also instead of the *into* and *for* usage you could just *map* over the list of symbols. Here's how I would do it: (defmacro migrate [ syms] `(migrate* ~@(map (partial list 'var) syms))) (macroexpand-1 '(migrate a b

Bret Victor - The Future of Programming

Hi all, I just saw this talk by Bret Victor and found its message very compelling and thought provoking: The Future of Programminghttp://worrydream.com/dbx/ . I've sometimes thought (and marveled) about the fact that people were doing all sorts of cool stuff in the 60's and 70's that actually

Re: Compiling ClojureScript in the repl using a macro defined in Clojure

I tried the following: 1. Created a project with David Nolen's lein template (taken from herehttp://swannodette.github.io/2013/10/27/the-essence-of-clojurescript/ ): *$ lein new mies hello-world* 2. Created a *macro.clj* file in the *src/hello-world* folder with the contents you posted:

Re: preferred way to dereference a ref: outside or inside dosync?

Jim, The value for all refs whose value you don't actually modify inside a transaction should be obtained through ensurehttp://clojuredocs.org/clojure_core/clojure.core/ensure if you want to make sure :P their value won't be changed by a different transaction, that way you get a consistent

Re: How to interrupt execution and open a debugger/REPL?

Hi Alexandru, As Andy pointed out there's the emacs+Ritz option which has quite a few features, but if the main thing you want to do is inspect the locals and the current stack trace, you could use a macro as the one presented in the book The Joy of Clojure http://joyofclojure.com/ (Chapter 8:

Re: Step by step debugging

Hi Bastien, I think Ritz https://github.com/pallet/ritz [1] might be what you are looking for. Although I haven't tried it myself yet, I recently saw the presentation Ritz, The Missing Clojure Tooling and really liked what I saw. HTH, J [1]: https://github.com/pallet/ritz [2]:

Re: load-file namespace

Hi Ramesh, Based on the stack-trace, the error is thrown during compile-time. This means the compiler is having a hard time compiling test1/core.clj because it doesn't know of any hello namespace. This makes sense since no hello namespace has been referred to in the test1.core namespace (i.e.

Re: Order of keys and vals results for sorted maps?

Hi Ru, I hope I understood your question correctly, because I did some digging based on that, since I was curious about the answer. ** The implementation for sorted maps (at least in 1.5.1 and as far back as 1.2.0, maybe farther, I didn't check) guarantees that the result from from *keys* will

Re: How to go about 'proving' why dynamically typed languages are better

Thanks for the link! I really liked the interview, it was interesting and fun to watch. J On Monday, October 7, 2013 9:49:24 AM UTC+9, brad bowman wrote: zcaudate z...@caudate.me javascript: Oct 05 08:35PM -0700 I'm a little bit miffed over this current craze of `types` and

Re: Introspecting documentation information

Maybe this bit of code serves your purpose or leads you in some useful direction. (ns doc-query (:use clojure.repl)) (defn seq-docs Prints the docstrings of a seq of symbols. [s] (with-out-str (doseq [x s] (eval `(doc ~x) (defn ns-docs Given a namespace object or its symbol

Re: Introspecting documentation information

Maybe this bit of code serves your purpose or leads you in some useful direction. (ns doc-query (:use clojure.repl)) (defn seq-docs Prints the docstrings of a seq of symbols. [s] (with-out-str (doseq [x s] (eval `(doc ~x) (defn ns-docs Given a namespace object or its symbol

Re: Reading single characters...?

According to the JLine https://github.com/jline/jline's source code (v1.0) in UnixTerminal.javahttps://github.com/jline/jline/blob/jline-1.0/src/main/java/jline/UnixTerminal.java#L355, echo is disabled with the command *stty -echo* which disables all echoing in the console (just tried it in a

Re: send agent inside doseq

If on the *println* you don't see the value updated, it's probably because the operation sent to the agent wasn't applied yet. Add a *(Thread/sleep 500)* in between the *send *and *println *expressions and you'll see the expected agents'. Cheers, JF On Wednesday, August 21, 2013 12:21:59

Re: Any reason why the name of this group is not comp.lang.clojure?

Yep, this is the official Clojure mailing list. :) Cheers, J On Tuesday, May 28, 2013 8:39:03 PM UTC-3, Seven Hong wrote: Hi all! I recently began learning Clojure, and I like it a lot; then I found this group on google. Is there any particular reason that it's not called

Re: ANN How To Make Your Open Source Project Awesome (or: Not Suck)

Good stuff and I really enjoyed reading it too. Thanks, J On Saturday, April 20, 2013 1:11:59 AM UTC-3, Michael Klishin wrote: 2013/4/20 u1204 da...@axiom-developer.org javascript: There is a HUGE gulf between the user documentation and maintaining the code. Just like there is a huge

Re: doing a Google search from Clojure?

Setting the user agent did the trick, at least in my case. (ns google-search (:import [java.net URL URLEncoder])) (def google-search-url http://www.google.com/search?q=;) (def user-agent Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.172) (defn

Re: doing a Google search from Clojure?

url))) (spit response.html (search clojure google)) J On Friday, March 22, 2013 1:02:53 PM UTC-3, Rich Morin wrote: On Mar 22, 2013, at 08:00, juan.facorro wrote: Setting the user agent did the trick, at least in my case. Thanks! Using your code, I was able to bring in a page

Re: Why not when-let* ?

In the short time I've been active in the list, I've seen this topic come up a couple of times, and they both have come up really close to each other also, there's been one in December https://groups.google.com/forum/?fromgroups=#!searchin/clojure/let-else/clojure/1g5dEvIvGYY/EWjwFGnS-rYJand

Re: (def newsletter)

Pretty cool. Have you subscribed and recieved any newsletter yet? If so, what do you think of the content? Thanks! J On Wednesday, February 27, 2013 2:49:01 PM UTC-3, Rich Morin wrote: I just ran across this and don't see anything about it in my list archives, so... (def newsletter)

Re: (def newsletter)

at 6:26 PM, juan.facorro juan.f...@gmail.comjavascript: wrote: Pretty cool. Have you subscribed and recieved any newsletter yet? If so, what do you think of the content? Thanks! J On Wednesday, February 27, 2013 2:49:01 PM UTC-3, Rich Morin wrote: I just ran across

Re: Are symbols ending with ':' allowed or not?

The first statement concers the Clojure *reader*, which parses source code according to the rules specified in the link provided. What I think the first quote refers to, is that all tokens that begin with a ':' will be parsed by the reader as Clojure keywords and not symbols. Additionally a

Re: protocol implementation delegating to protocol extension doesn't compile

Hi Jim: I think the problem is that you are actually calling the *getDistance *protocol function with only 2 arguments in the line in bold below: (defrecord LevenshteinDistance [] IDistance (getDistance [_ s1 s2] *(getDistance s1 s2)) ;; - Calling a getDistance function with 2

Re: Why is this so difficult?

I feel your pain BJG145, when I started learning Clojure I used Cloojhttps://github.com/arthuredelstein/clooj to be able start playing with the language, it provides the basics, a REPL, a text area for the code and a tree of files and folder for the current project. It's simple and get's you

Re: How to invoke java method obtained using clojure.reflect

Awesome :) On Tuesday, February 12, 2013 9:51:01 AM UTC-3, Meikel Brandmeyer (kotarak) wrote: Hi, if you want to resort to eval you can define your own function on the fly. (defn call-fn [ args] {:arglists ([class method args])} (let [o (gensym) [class method args] (map

Re: How to invoke java method obtained using clojure.reflect

Since a macro's arguments must be available at compile time, creating one for calling a runtime defined method won't work. Because of this we are left with *eval*, which actually compiles and then evaluates at runtime the expression it receives as an argument. Here's a function that receives

Re: Please help this newbie out!

I think the code you posted might not be the working code since a, b and c don't seem to exist in it. :P Check out the docs for the createImage(int, int)http://docs.oracle.com/javase/7/docs/api/java/awt/Component.html#createImage(int, int) method: *Returns:**an off-screen drawable image,

Re: inserting code into reify methods

Here's a possible implementation: (ns macro-test (:require [clojure.pprint :as p])) (defn get-args-index [x] (first (filter identity (map-indexed #(when (vector? %2) %1) x (defn insert-at [x y i] (concat (take (inc i) x) (list y) (drop (inc i) x))) (defmacro reify-with-validation [f

Re: Little namespace question

, nodename wrote: As an aside, I'm curious about whether this could have been implemented without a macro. -A On Dec 18, 2012 11:06 PM, Alan Shaw node...@gmail.com javascript: wrote: Thanks very much Juan, that's some good study material for me. -A On Dec 18, 2012 10:45 PM, juan.facorro

Re: Little namespace question

The macro sees it arguments as *symbols* and does not resolve to the corresponding *var* until evaluation, so the value for the local *code* var in the macro is actually the *symbol** generator.* The *eval-in* macro uses the *read-string* function to evaluate the code you provide, this

Re: Tail call in multi method?

What about recur http://clojure.org/special_forms#recur? It's a special form used for tail call optimizations. Juan On Monday, December 17, 2012 1:32:31 PM UTC-3, bruce li wrote: Hello, everyone. I'm currently trying to model an automata using multi-method. So in my code, I have

Re: Tail call in multi method?

forever Jonas On Monday, December 17, 2012 6:56:34 PM UTC+2, juan.facorro wrote: What about recur http://clojure.org/special_forms#recur? It's a special form used for tail call optimizations. Juan On Monday, December 17, 2012 1:32:31 PM UTC-3, bruce li wrote: Hello, everyone. I'm

Re: Why I get IllegalArgumentException: No matching ctor found

I think it has to do with the closure in the *fn *used when generating the form in the macro. If you change this function: *(defn make-greeter []* * (let [message hello]* *(fn [user-name]* * (str message , user-name* To this one: *(defn make-greeter [] * * (fn [user-name]* *

Re: Import many classes with the same name

One would have the same problem importing those classes in Java code. It's just not possible to import two classes with the same name, because there is no way to tell which one you are referring to when you use the class' name only (e.g. (Application.)). However it's possible to just import

Re: how to launch repl and switch to specific namespace programmatically

The following code will start a repl in the my-repl.repl namespace: (ns my-repl.repl (:require [clojure.main])) (def my-var hi) (clojure.main/repl) So you'll be able to acces the vars defined in it. my-repl.repl= my-var hi Cheers, Juan On Thursday, December 13, 2012 2:25:44 PM UTC-3, stone

Re: how to launch repl and switch to specific namespace programmatically

I forgot to add the modified command line for this to work as described: $ java -Xmx1G -cp $CLASSPATH clojure.main src/my-repl/repl.clj Juan On Thursday, December 13, 2012 3:15:36 PM UTC-3, juan.facorro wrote: The following code will start a repl in the my-repl.repl namespace: (ns my