chunked-seq? is lying?
In 1.2, I don't understand why one of the sequences below is chunked, but the other is not. Also, chunked-seq? seems to be lying about the second one. user (take 1 (map #(do (print .) [% %2]) (range 100) (range 100))) (.[0 0]) user (take 1 (map #(do (print .) [%]) (range 100))) ([0]) user (chunked-seq? (map #(do (print .) [%]) (range 100))) false Mike -- 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: chunked-seq? is lying?
OK, I understand the difference in behavior between the two maps. But why is chunked-seq? incorrect? user (take 1 (map #(do (print .) [%]) (range 100))) ([0]) user (chunked-seq? (range 100)) false user (chunked-seq? (map #(do (print .) [%]) (range 100))) false user (chunked-seq? (take 1 (map #(do (print .) [%]) (range 100 false The implementation of chunked-seq? checks to see if the sequence is an instance of clojure.lang.IChunkedSeq. That doesn't appear to be sufficient in the case of map taking one collection. Also, Chas Emerick stated in another discussion that ranges always produce chunked seqs, but the value of (chunked-seq? (range 100)) seems to belie that. Mike -- 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
Any demand for ClojureCLR support under slime / emacs?
I really, really want ClojureCLR to play nice with emacs the way Clojure does. I've looked at the swank-clojure sources, but I really don't know enough about the Clojure and ClojureCLR internals to make much headway with this project. Still, I'd love to help out in any way that I can. Is anyone else out there interested in such a project? Mike -- 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
with-meta vs ^{}
In Programming Clojure Stuart Halloway says:
It is important to note that the metadata reader macro is not the same
as with-meta. The metadata reader macro adds metadata for the
compiler, and with-meta adds metadata for your own data:
(def ^{:testdata true} foo (with-meta [1 2 3] {:order :ascending}))
(Note: example changed to 1.2 style syntax)
He then shows the difference between (meta foo) and (meta #'foo).
However, it looks like I can accomplish the same thing with
(def ^{:testdata true} foo2 ^{:order :ascending} [1 2 3])
So, is there really any difference between with-data and the reader
macro?
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Re: string interpolation
Check out the macro from clojure.contrib.strint. http://clojure.github.com/clojure-contrib/strint-api.html -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: string interpolation
Check out the macro from clojure.contrib.strint. http://clojure.github.com/clojure-contrib/strint-api.html -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: string interpolation
Check out the macro from clojure.contrib.strint. http://clojure.github.com/clojure-contrib/strint-api.html -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
A question regarding map destructuring
This question is a bit abstruse, so please bear with me :-)
Here is an example of a function with named arguments and default
values from the book The Joy of Clojure. It uses optional arguments
(via ) and map destructuring.
(defn slope
[ {:keys [p1 p2] :or {p1 [0 0] p2 [1 1]}}]
(float (/ (- (p2 1) (p1 1))
(- (p2 0) (p1 0)
(slope :p1 [4 15] :p2 [3 21])
;evaluates to -6.0
(slope :p2 [2 1])
;evaluates to 0.5
Here is an example of map destructuring with no optional arguments:
(defn print-value-a [{vala :a}]
(println vala))
(print-value-a {:b 7 :a 3})
; prints 3
My understanding of the way optional function arguments work based on
the book and the documentation at clojure.org is that all leftover
arguments are, conceptually speaking, stored in a (presumably vector-
like) sequence which is bound to (or destructured according to) the
entity after the . If that is true, then I would expect to be able
to do explicitly what is being done in the slope function implicitly;
i.e., the following expression should print 3:
(print-value-a [:b 7 :a 3])
; actually prints nil
So this can't be how it works, but I don't know how else to interpret
the documentation. Is this a special case meaning if there are
optional arguments AND they are to be destructured via a map, then
insert them pairwise into a map instead of a vector? Or does this
behavior fall directly out of the destructuring rules without a
special case based on something I'm missing?
Mike
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Re: Is ClojureCLR converging toward a release?
Fantastic! Great job David and everyone else who contributed. Mike -- 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: Is ClojureCLR converging toward a release?
Fantastic! Great job David and everyone else who contributed. Mike -- 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: Is ClojureCLR converging toward a release?
Fantastic! Great job David and everyone else who contributed. Mike -- 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: Is ClojureCLR converging toward a release?
David, Rich: any further updates on this? Mike On Sep 24, 8:24 am, dmiller dmiller2...@gmail.com wrote: Just waiting for that person's CA to be processed by Rich. -- 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: Clojure for VS2010
Wow, really cool. I'm looking forward to seeing this! Mike -- 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
Is ClojureCLR converging toward a release?
It was mentioned about six weeks ago that ClojureCLR was mostly 1.2 compatible with a few outstanding issues and a couple dozen failing tests. What is the status now? Is there still an intention of an official binary release with 1.2 level functionality, or has that target been dropped? Thanks, Mike -- 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: why the big difference in speed?
What is the definition of microbench? -- 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: ClojureCLR and WPF Data Binding
Anyone else looking at this sort of thing, or even interested? I'm very interested although I'm not looking at it right now (still taking baby steps learning Clojure while waiting for ClojureCLR to mature a bit) ClojureCLR + WPF / Silverlight is ultimately where I want to go. Thanks for being a pathfinder on this. Mike -- 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: seq-contains? in practice
On Apr 29, 5:10 am, Stuart Halloway stuart.hallo...@gmail.com wrote: (There are a few calls to seq-contains? in the test suite for contrib, and I wrote all of them. If you write lots of unit tests you already know why such calls make sense there.) For those of us who are newbies, would you mind being more explicit here? Thanks, Mike -- 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: Why I have chosen not to employ clojure
I would appreciate any feedback. According to the readme it requires bash or zsh. Any plans to support windows (without cygwin or other unix emulation)? I agree with Stuart that the user experience should be friendly on all supported platforms. Mike -- 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 To unsubscribe from this group, send email to clojure+unsubscribegooglegroups.com or reply to this email with the words REMOVE ME as the subject.
What's an idiomatic translation of this CL data structure?
In PAIP section 2.3, Norvig gives an example of a generative grammar:
;; common lisp
(defparameter *simple-grammar*
'((sentence - (noun-phrase verb-phrase))
(noun-phrase - (Article Noun))
(verb-phrase - (Verb noun-phrase))
(Article - the a)
(Noun - man ball woman table)
(Verb - hit took saw liked))
A grammar for a trivial subset of English.)
What's the most idiomatic way to write something like this in
Clojure? My first attempt is as follows:
(defonce- *simple-grammar*
{:sentence [:noun-phrase :verb-phrase]
:noun-phrase [:Article :Noun]
:verb-phrase [:Verb :noun-phrase]
:Article '(the a)
:Noun '(man ball woman table)
:Verb '(hit took saw liked)}
A grammar for a trivial subset of English.)
Assume I'm going to need some way to distinguish terminals from non-
terminals. Above I used lists vs vectors. If this were a non-toy app
where I was optimizing for performance, would it make more sense to
use vectors everywhere? If so, what would be a good succinct way to
differentiate the two rule types? Could I add meta-data to the vector
literals somehow? Or perhaps use structs instead?
Thanks,
Mike
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Re: Leiningen, Clojure and libraries: what am I missing?
On Mar 4, 4:32 pm, Glen Stampoultzis gst...@gmail.com wrote: Getting swank-clojure going in Windows is also a pain. To install it the recommended way via ELPA you need to patch the ELPA source code first. This isn't documented at the swank-clojure site either. For others who are struggling with this issue, see the following thread. http://groups.google.com/group/clojure/browse_frm/thread/c4d00ba0f1614c49/3b4e04ef9fb0c8bf?lnk=gstq=elpa+windows#3b4e04ef9fb0c8bf I ended the thread with a plea to Phil update the docs wrt this issue, but no movement on that front yet. Mike -- 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: Leiningen, Clojure and libraries: what am I missing?
Is anyone familiar with running Maven (and possibly Polygot Maven) on Windows? Does it pretty much work as expected? The learning curve for Maven looks steeper than for Leiningen, but if it makes up for it with better documentation and being better-behaved, then it may be worth it. Mike -- 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: ClojureCLR and swank-clojure: port to .NET or using IKVM?
Hi Iwan, I'm very interested in this also. I inquired about it in the following thread: http://groups.google.com/group/clojure/browse_frm/thread/2954b1f005663bbf# In short, it appears nobody has attempted this. Unfortunately, I'm too much of a clojure and java newbie to be competent at doing the rework involved. Concerning your first approach, it might be nice to modify swank- clojure so that the platform-specific parts are hidden behind an abstraction layer as mentioned in the above thread. I think Phil Hagelberg is the chief maintainer of swank-clojure at this point, so it may be useful to coordinate with him. Let me know if I can help in some way! Mike -- 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
ClojureCLR status?
I notice there have been no checkins to ClojureCLR in the last month and a half. Is something big in the works? Is absolutely nothing in the works? :-) If I check out and build the latest sources, how will it compare in terms of functionality to the Clojure main branch? In particular, does it have cutting edge things like protocols, reify, etc? Thanks, Mike -- 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: Common Lisp's append
On Feb 19, 6:23 am, Chouser chou...@gmail.com wrote: In Clojure, if you could use conj on a vector but instead use concat on a list, you'll end up with code that is both non-idiomatic and runs slower than necessary. I found the exercise of doing the equivalent with Clojure vectors pretty challenging. Given the following use case for CL append: CL-USER (append '(a) '() '(b (c)) '(d)) (A B (C) D) The best I could do with Clojure vectors is this: (defn join-vecs [v1 v2] (let [v2len (count v2)] (cond (zero? v2len) v1 (= v2len 1) (conj v1 (first v2)) true (recur (conj v1 (first v2)) (rest v2) (defn append [ vecs] (reduce join-vecs [] vecs)) user (append '[a] '[] '[b [c]] '[d]) [a b [c] d] Is there a better / more idiomatic / more efficient way? Thanks, Mike P.S. I recently got the MEAP of The Joy of Clojure and, aside from a few rough edges in the copy editing, think the content is excellent! Looking forward to learning more. -- 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: Common Lisp's append
Thanks, I ended up using Allegro via Lispbox here. http://www.gigamonkeys.com/lispbox/#download Mike -- 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
Common Lisp's append
Hey Clojurians, I'm a Clojure and Common Lisp newbie. I heard that Norvig's PAIP was a good book to study idiomatic CL code, so I've embarked on a project to translate the examples to / work the exercises in Clojure. I hope to complete this project before the end of this century :-) Regarding append from CL: ISTM that this is similar to concat in Clojure. I tried the following definition: (defn append [ parts] (concat parts)) but it is not quite correct: (concat '(a b c) '(d e f) '(g)) - (a b c d e f g) (append '(a b c) '(d e f) '(g)) - ((a b c) (d e f) (g)) What is the correct way to do this? Is it possible to code the idea that append == concat two ways, one explicitly defining a parameter list like parts and one just aliasing the concat symbol somehow? Also, is the following definition closer to the CL semantics? (use '[clojure.contrib.seq-utils :only (flatten)]) (defn append2 [ parts] (flatten (list parts))) (append2 '((a) b c) '(d e f) '() '(g)) - (a b c d e f g) Finally, can anyone recommend a good free common lisp implementation that runs well with slime / emacs under Windows? Thanks, Mike -- 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
ClojureCLR under slime / emacs?
Does anyone have ClojureCLR running under emacs via slime? Failing that, can anyone give me some pointers as to how I might hacking swank-clojure.el (or whatever) to get this to work? Mike -- 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
swank-clojure installation failure via ELPA
Hi all, I'm trying to get all the latest and greatest swank-clojure 1.1.0 goodness via ELPA, but no joy. I'm starting with an absolutely clean slate. I'm running a freshly installed emacs 23.1.1 on Windows 7. I have a blank .emacs file and no elpa subdirectory under .emacs.d. I install elpa and do a package-list-packages. I mark swank-clojure 1.1.0 for installation and install it. I restart emacs and type M-x slime. I get [No match]. Package-list-packages indicates that slime, slime-repl, clojure-mode, and swank-clojure are all installed. Huh? Please advise. Thanks, Mike -- 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: swank-clojure installation failure via ELPA
On Jan 2, 9:13 am, Shawn Hoover shawn.hoo...@gmail.com wrote: Hi Mike, Is there anything useful going on in *messages*? Here is the contents of *Messages*: Contacting host: tromey.com:80 Reading [text/plain]... 4k of 4k (100%) Reading... done. Reading [text/plain]... 54k of 54k (100%) Saving file c:/mbk/.emacs.d/elpa/package.el... Wrote c:/mbk/.emacs.d/elpa/package.el Loading c:/mbk/.emacs.d/elpa/package.el (source)...done Saving file c:/mbk/_emacs... Delete excess backup versions of c:/mbk/_emacs? (y or n) Wrote c:/mbk/_emacs Contacting host: tromey.com:80 Reading [text/plain]... 9k of 9k (100%) Saving file c:/mbk/.emacs.d/elpa/archive-contents... Wrote c:/mbk/.emacs.d/elpa/archive-contents Reading [text/plain]... 575 bytes of 563 bytes (102%) Saving file c:/mbk/.emacs.d/elpa/builtin-packages... Wrote c:/mbk/.emacs.d/elpa/builtin-packages Contacting host: tromey.com:80 Reading [text/plain]... 25k of 25k (100%) Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode.el Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode-pkg.el Warning: defvar ignored because generated-autoload-file is let-bound Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode-autoloads.el Generating autoloads for clojure-mode-pkg.el...done Generating autoloads for clojure-mode.el...done Saving file c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode- autoloads.el... Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode-autoloads.el (No changes need to be saved) (No files need saving) Checking c:/mbk/.emacs.d/elpa/clojure-mode-1.6/... [2 times] Compiling c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode- pkg.el...done Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode-pkg.elc Checking c:/mbk/.emacs.d/elpa/clojure-mode-1.6/... Compiling c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode.el...done Wrote c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode.elc Checking c:/mbk/.emacs.d/elpa/clojure-mode-1.6/... Done (Total of 2 files compiled, 1 skipped) Contacting host: tromey.com:80 Reading [text/plain]... 347k of 347k (100%) Wrote c:/mbk/.emacs.d/elpa/slime-20091016/slime.el Wrote c:/mbk/.emacs.d/elpa/slime-20091016/slime-pkg.el Wrote c:/mbk/.emacs.d/elpa/slime-20091016/slime-autoloads.el Generating autoloads for slime-pkg.el...done hack-local-variables: Local variables entry is missing the suffix Here is the contents of *Compile-Log*: Compiling file c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode- pkg.el at Sat Jan 02 10:30:21 2010 Compiling file c:/mbk/.emacs.d/elpa/clojure-mode-1.6/clojure-mode.el at Sat Jan 02 10:30:21 2010 In clojure-mode: clojure-mode.el:196:34:Warning: reference to free variable `paredit- mode' clojure-mode.el:196:51:Warning: reference to free variable `paredit- version' In clojure-font-lock-extend-region-def: clojure-mode.el:232:33:Warning: reference to free variable `font-lock- beg' clojure-mode.el:239:30:Warning: assignment to free variable `font-lock- beg' clojure-mode.el:240:33:Warning: reference to free variable `font-lock- end' clojure-mode.el:242:19:Warning: assignment to free variable `font-lock- end' In clojure-font-lock-extend-region-comment: clojure-mode.el:257:26:Warning: reference to free variable `font-lock- beg' clojure-mode.el:254:49:Warning: reference to free variable `font-lock- end' clojure-mode.el:258:17:Warning: assignment to free variable `font-lock- beg' clojure-mode.el:262:17:Warning: assignment to free variable `font-lock- end' In clojure-indent-function: clojure-mode.el:397:33:Warning: reference to free variable `calculate-lisp-indent-last-sexp' In clojure-slime-config: clojure-mode.el:574:11:Warning: assignment to free variable `swank-clojure-classpath' In end of data: clojure-mode.el:684:1:Warning: the following functions are not known to be defined: imenu--generic-function, inferior-lisp-proc, switch-to-lisp, slime-setup, swank-clojure-slime-mode-hook Mike -- 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: swank-clojure installation failure via ELPA
On Jan 2, 12:18 pm, Shawn Hoover shawn.hoo...@gmail.com wrote: I believe you're running into the same coding issue that I did with ELPA on Windows. slime.el declares in its local variables that it has unix line endings, but ELPA's download process is saving it with windows line endings. Here's the pseudopatch I submitted to ELPA. You can hack up your .emacs.d/elpa.package.el and then reinstall those packages. That did the trick, but now I have another question. How do I set up additional entries on my classpath now that I've installed via elpa and moved to 1.1.0? I used to do something like the following: (swank-clojure-config ;; ... (setq swank-clojure-extra-classpaths (list ;; ... ) ) ) However, swank-clojure-config is no longer recognized. Mike -- 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: swank-clojure installation failure via ELPA
I'm up and running again. Thank you very much Shawn and Phil! Phil: For the sake of other Windows users, I suggest adding a pointer to the patched package.el in the readme until the issue is resolved. Mike -- 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
Loading a .clj file automatically at repl startup?
Is it possible to load a library such as foo.clj (with (ns foo ...) at the top of the file) into the repl automatically at startup, rather than having to (use 'foo) every time the repl starts? I'd like to avoid creating a .jar file. If possible, I'd like to do this both from the command line (java - cp ...) and from within slime / emacs. Thanks, Mike -- 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
A tale of cond, clauses, and the docs
What, exactly, is a clause in clojure? From seeing the term used in context, I inferred that it meant something along the lines of a keyword which can optionally be used to change the semantics of a form. Apparently, it means more than that. This is valid clojure: (defn sign [x] (cond ( x 0) Positive ( x 0) Negative :else Zero)) I had no idea that I could use :else for the fallthrough case of a cond, so I looked it up in the docs: user (doc cond) - clojure.core/cond ([ clauses]) Macro Takes a set of test/expr pairs. It evaluates each test one at a time. If a test returns logical true, cond evaluates and returns the value of the corresponding expr and doesn't evaluate any of the other tests or exprs. (cond) returns nil. Apparently, each test/expr pair is a clause, or perhaps each test and each expression is a clause. No mention of supporting an :else clause though. Let's check out the source code: (defmacro cond Takes a set of test/expr pairs. It evaluates each test one at a time. If a test returns logical true, cond evaluates and returns the value of the corresponding expr and doesn't evaluate any of the other tests or exprs. (cond) returns nil. [ clauses] (when clauses (list 'if (first clauses) (if (next clauses) (second clauses) (throw (IllegalArgumentException. cond requires an even number of forms))) (cons 'clojure.core/cond (next (next clauses)) I don't know much about macros, but it is clear that cond builds on if. However, the documentation for if mentions nothing about :else, and the source for if is not available, presumably because it's implemented in java. Is there a way to have discovered the existence of :else from the documentation alone? Is this just an oversight in the docs, or is there a more general point concerning clauses that I'm missing? Mike -- 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: A tale of cond, clauses, and the docs
On Dec 19, 8:27 pm, Sean Devlin francoisdev...@gmail.com wrote: :else was chose because it is simply not nil, and therefor always true. I suspected something along these lines soon after I posted. I did some more experimenting and discovered that :foo will work just as well as :else. So if I understand correctly, :else is not even defined in the language anywhere. Like :foo, it springs into existence when I first mention it, and it evaluates to true by virtue of being a keyword. Cond exploits this behavior for free. This is in contrast with, e.g., the ns macro, which presumably would have to explicitly match against keywords such as :use or :require to implement the proper semantics. Mike -- 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: Help! My slime-fu is broken!
On Dec 15, 8:42 pm, Phil Hagelberg p...@hagelb.org wrote: Ah, OK. That explains the overload of the term compile I'll add a note to this to the swank-clojure readme. Cool. I wasn't even aware that the CL version provided error navigation here. But it looks like it shouldn't be too hard to fix now that you've made me aware of the problem. Great! Note that in sldb (debugger) buffers pressing v on a stack trace frame will actually jump to the cause of the error if possible. Well then, here's another potential bug report / teachable moment :-) I inserted an intentional typo in my code and then used slime-load- file (^C^L). I get an sldb buffer as follows: java.lang.Exception: Unable to resolve symbol: lfjd in this context (hi.clj:0) [Thrown class clojure.lang.Compiler$CompilerException] Restarts: 0: [ABORT] Return to SLIME's top level. 1: [CAUSE] Throw cause of this exception Backtrace: 0: clojure.lang.Compiler.analyze(Compiler.java:4340) 1: clojure.lang.Compiler.analyze(Compiler.java:4286) 2: clojure.lang.Compiler.eval(Compiler.java:4536) 3: clojure.lang.Compiler.load(Compiler.java:4857) 4: clojure.lang.Compiler.loadFile(Compiler.java:4824) 5: clojure.lang.RT$4.invoke(RT.java:273) 6: swank.commands.basic$load_file__801.invoke(basic.clj:129) 7: clojure.lang.Var.invoke(Var.java:346) 8: user$eval__1256.invoke(NO_SOURCE_FILE) 9: clojure.lang.Compiler.eval(Compiler.java:4532) 10: clojure.core$eval__3990.invoke(core.clj:1728) 11: swank.core$eval_in_emacs_package__366.invoke(core.clj:55) 12: swank.core$eval_for_emacs__443.invoke(core.clj:123) 13: clojure.lang.Var.invoke(Var.java:354) (etc) One suspicious thing is that the Exception line is reporting line number 0 whereas the actual typo is at line 3. Actually, further digging indicates that the line number is correctly reported if the typo is an undefined symbol being used as a function, e.g., (misspelled-func-name foo), but not if garbage appears outside of a form like above, i.e., lfjd typed on a line by itself. This behavior with the line number reporting is consistent whether in sldb buffers as above or as reported in slime compilation buffers after slime- compile-and-load-file (^C^K). Moreover, if I try to view the source on any of the stack frame lines (v) I simply get an evaluation aborted message. In this scenario, would you expect v to work on any of the stack frames? In general, should v work on frames coming out of .java files (like frame 0) or only .clj files (like frame 6). Again, in my case, it doesn't work anywhere. Thanks, Mike -- 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
Help! My slime-fu is broken!
Hello Clojurians, I've a Clojure newbie, and I've just started running clojure-mode and slime under emacs (on Windows). I'm running into several issues. Some of these are definitely bugs in my understanding; others may be bugs in my install or the implementation itself. I'd appreciate any help anyone can provide on the following questions: Slime seems to be working to a degree. I have a functional repl, but I have some issues with compiling: I know that ^C^L from clojure mode will load a file (defaults to the file associated with te current buffer), and that this is in effect the equivalent of typing the file's contents directly into the repl. There is also ^C^K which the slime menu describes as compile/load file. Annoyingingly, emacs claims C-c C-k is undefined when I ask the help system about that binding. In any event, I'm not quite sure what compile means in this context. Is this truly AOT compile into class files, or is it something more general? I suspect it's the latter; I don't see class files being generated anywhere. If the file I'm compiling contains no errors, the effect seems to be just like ^C^L except that the minibuffer says something like Compilation finished: 0 errors 0 warnings 0 notes [0.00 secs] Is there any important difference between the two here? If there are errors, e.g., an intentional typo, other strangeness occurs. I'll get a message like Compilation failed: 2 errors 0 warnings 0 notes [0.00 secs]. Fine. From the file.clj buffer, I think I should be able to use M-n and M-p to navigate amongst the errors (or is it the notes?) but I only get No next note. If I then go to the *SLIME Compilation* buffer, I'll see something like this: 2 compiler notes: error: java.lang.Exception: Unable to resolve symbol: greeto in this context (hi.clj:3) error: java.lang.Exception: Unable to resolve symbol: greeto in this context I'm not sure why the same error is appearing twice, but the first instance even has the correct source code filename and line number. I try to navigate from here by pressing enter. No matter what line I'm on when I press enter, emacs says No error here. Huh? If, instead, I load the file with the typo with ^C^L I get a new buffer in sldb mode, as shown below: java.lang.Exception: Unable to resolve symbol: greeto in this context (hi.clj:3) [Thrown class clojure.lang.Compiler$CompilerException] Restarts: 0: [ABORT] Return to SLIME's top level. 1: [CAUSE] Throw cause of this exception Backtrace: 0: clojure.lang.Compiler.analyze(Compiler.java:4340) 1: clojure.lang.Compiler.analyze(Compiler.java:4286) ... etc ... Clearly this is a debugger. I won't ask for details as to what I can do here, except for this: Typing 0 will get me back to the repl. Fine. However, Typing 1 will Throw cause of this exception. What exactly does that mean? Is it rethrowing the same exception, or doing something different? How is it useful? Thanks to anyone who can help me with any of these issues. Mike -- 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: Help! My slime-fu is broken!
On Dec 14, 10:55 pm, Phil Hagelberg p...@hagelb.org wrote: How did you install slime? If you use trunk of slime you will run into breaking changes for which swank-clojure hasn't been updated yet. It's best to use ELPA, the Emacs package manager. (http://tromey.com/elpa) I tried to use ELPA at first but I ran into some issues that I no longer recall. I ended up installing Clojure Box 1.0 from http://clojure.bighugh.com thinking that would give me a consistent collection of pieces. Since I already had a pretty extensively customized emacs already installed, I didn't use the emacs from clojure box. Instead I modified my _emacs file to use the pieces CB installed. The relevant portion of my _emacs is: ;; clojure-mode (add-to-list 'load-path C:\\Program Files (x86)\\Clojure Box\\clojure- mode) (require 'clojure-mode) ;; swank-clojure (add-to-list 'load-path C:\\Program Files (x86)\\Clojure Box\\swank- clojure) (require 'swank-clojure-autoload) (swank-clojure-config (setq swank-clojure-jar-path C:\\Program Files (x86)\\Clojure Box\ \clojure\\clojure-1.0.0.jar) (setq swank-clojure-extra-classpaths (list C:\\Program Files (x86)\ \Clojure Box\\clojure-contrib\\clojure-contrib.jar C:\\projects\\clojure\ \ProgrammingClojure.code ) ) ) ;; slime (eval-after-load slime '(progn (slime-setup '(slime-repl (add-to-list 'load-path C:\\Program Files (x86)\\Clojure Box\\slime- cvs) (require 'slime) (slime-setup) Annoyingingly, emacs claims C-c C-k is undefined when I ask the help system about that binding. Sounds like you're invoking help from a context in which slime-mode is not enabled; probably due to installing by hand and forgetting a step? I did some more digging and solved this one myself. I had rebound help-for-help to an alternate key sequence so that I could use ^H for something else that I now no longer need. When I reverted these changes, ^H k C-c C-k worked as expected. Slime was designed for use with Common Lisp, which has a distinction between compiled and interpreted code. Clojure has no interpreter, so any way of loading in the code runs it through the compiler. Ah, OK. That explains the overload of the term compile [error navigation woes] There are some features of Slime that have not been ported to Clojure yet and still only work in CL. Unfortunately the author of the Clojure port has dropped it and I am left maintaining it myself, and there are still several portions of the code that I haven't gotten a chance to dive into yet. Oh, so can you confirm that error navigation is basically broken? Actually, I guess the relevant question is what CB 1.0's level of functionality is. If I can get access to a machine without emacs currently installed on it, I'll try to run the straight CB install and see how it behaves. Thanks, Mike -- 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: Help! My slime-fu is broken!
On Dec 14, 10:40 pm, David Nolen dnolen.li...@gmail.com wrote: While I personally use Emacs+SLIME to do Clojure hacking this is generally a poor introduction to Clojure for newbies. Clojure is new enough territory without having to fight with your text editor and the idiosyncracies of SLIME (SLIME hasn't even been compatible with swank-clojure since late October). Have you considered trying out NetBeans + Enclojure? I hadn't considered another IDE. Clojure is my first real exposure to the JVM, so I'm not familiar with Java IDEs. OTOH, Emacs has been my editor of choice for over two decades (yikes!) so it's definitely home turf for me. Besides, I'm already addicted to paredit mode :-) However, maybe the slime+Clojure picture is generally less stable than I thought it would be. Mike -- 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: Leiningen in Python
I could not get the python script to work, so I switched to the powershell version. I now understand that the leiningen-1.0.0-SNAPSHOT.jar is a so-called uberjar and contains all the dependencies for leiningen. However, the python script assumes clojure is from a separate jar which is not installed via lein self-install: CLOJURE_JAR = expanduser(~/.m2/repository/org/clojure/clojure/1.1.0- alpha-SNAPSHOT/clojure-1.1.0-alpha-SNAPSHOT.jar) I don't know how to modify this to use the leiningen uberjar instead. Mike -- 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: Leiningen in Python
All, I tried to use this script on Windows and it blew up real good! I'm a Clojure, Java, and Leiningen newbie, so perhaps a kind soul can help me out. 1. lein self-install worked. It downloaded leiningen-1.0.0- standalone.jar. However, that contradicts the description at http://zef.me/2470/building-clojure-projects-with-leiningen which indicates that self-install should download several jars, including clojure itself. That didn't happen, and it looks like it would never happen according to the python script. Also, I'd rather use one and only one clojure, clojure-contrib, etc. for everything rather than Leiningen using its own. Is this possible? 2. Any other lein command seems to require the clojure jar in the repository ~/.m2/repository/org/clojure/clojure/1.1.0-alpha-SNAPSHOT/ clojure-1.1.0-alpha-SNAPSHOT.jar. Since I don't have one there, I modified CLOJURE_JAR to point to my existing jar. Everything still fails with this sort of error: lein help java.lang.NoClassDefFoundError: Files Caused by: java.lang.ClassNotFoundException: Files at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:303) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316) Could not find the main class: Files. Program will exit. Exception in thread main I suspect the suspicious Files class name is coming from the fact that I now have CLOJURE_JAR set as follows: CLOJURE_JAR = expanduser(C:\\Program Files (x86)\\Clojure Box\\clojure \\clojure-1.0.0.jar) Looks like I'm getting bit by spaces in the path name. This would not be an issue if lein had downloaded its own clojure jar during step 1 (no spaces in that path). 3. My clojure jar is clojure-1.0.0.jar from clojure org. The script uses clojure-1.1.0-alpha-SNAPSHOT.jar, but a comment from the link implies that this has been supplanted by 1.1.0-master.jar. In any event, I don't know where either of these two things are. I tried going to build.clojure.org, but all the build artifiacts there are named clojure.jar. 4. BTW, what's the deal with this .m2 directory (i.e., where does the name come from)? Thanks for any help you can provide! Mike -- 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
lazy sequence question
I'm working my way through Programming Clojure and got an unexpected result with sequences: user (take 10 (filter even? (iterate inc 1))) (2 4 6 8 10 12 14 16 18 20) user (take-while #( % 10) (iterate inc 1)) (1 2 3 4 5 6 7 8 9) user (take 10 (filter #( % 10) (iterate inc 1))) ; Evaluation aborted. The first two work but the third one hangs. Why? Thanks, Mike -- 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: lazy sequence question
On Dec 9, 10:35 pm, Mike K mbk.li...@gmail.com wrote: The first two work but the third one hangs. Why? user (take 5 (filter #( % 10) (iterate inc 1))) (1 2 3 4 5) OK, I figured out that it won't hang with taking = 9 elements, which is the total that pass the filter. But shouldn't it give me 9 items without hanging when I ask for 10 or more as in the first case? Mike -- 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: lazy sequence question
Neither filter nor take know to abandon their attempt. That's how this works. Ah, of course. Thanks Mark and Richard! Mike -- 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
ClojureCLR questions
Hi Clojurites! I'm reading about Clojure and ClojureCLR with great interest. Since I'm a .net developer with little Java / JVM experience, I'm particularly interested in ClojureCLR. It seems like David M. and crew are doing a fantastic job with the CLR implementation! A few quick questions: 1. Re. CLR Interop -- one thing I didn't see mentioned on the wiki is .net attributes (metadata). Will annotating methods, properties, etc with attributes be supported? 2. What are the performance goals for ClojureCLR? I saw a video overview of Clojure by Rich in which he stated (perhaps with certain caveats that I don't recall) that essentially Clojure ran at speeds comparable to Java. Is having ClojureCLR run at speeds comparable to C# a realistic goal? What's the current performance story? 3. I get the basic concept that native Clojure data structures are immutable and persistent. This is obviously an impedance mismatch when dealing with JVM or .net objects and APIs that are built around mutable state. Where can I more info regarding best practices in getting these two different animals to work well together within an app? Thanks, Mike -- 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
