> On Aug 20, 2015, at 3:32 AM, Andy Dwelly wrote:
>
> Does anyone know how how to create a java.lang.String<> ? Ideally how to
> convert a Clojure "some string" which is a java.lang.String to a
> java.lang.String<>.
> Also, although this is merely idle curiosity on my part, does anyone know
>
> I wish I could do that in Clojure:
>
> (defn ^:transactional someFunction [...] ...)
>
> and then have somehow means to decorate someFunction (yes, I am aware there
> is no container)
The code you proposed does have an effect on the someFunction var (but not the
function it ends up bound to)
On Sep 12, 2014, at 2:36 PM, Mark Engelberg wrote:
> As far as I know, Clojure doesn't give you a whole lot of control over how
> things print at the REPL
The built-in clojure repl has some customization options. You can run a repl
with a custom reader and printer, for example.
The one below
> I understand that lazy-seq caches the computed result as each element is
> read. However, how can is this made to be thread-safe?
The caching is done within a synchronized method as each element's value is
realized.
There is an instance of clojure.lang.LazySeq that manages each seq element's
On Jan 30, 2014, at 8:22 PM, Michael Blume wrote:
> Recently we had an app fail because, as it was starting up, one thread was
> trying to require a clojure namespace, and another was trying to use a
> PersistentHashSet. Somehow these two threads wound up in deadlock. I've
> reproduced the pr
On Jan 1, 2014, at 3:26 PM, Dave Tenny wrote:
> When I use 'lein repl' in some project context and get to the REPL prompt,
> there's an available but as yet not ... present ... namespace, i.e. (all-ns)
> won't list the namespace(s) created in the lein project directory tree.
>
> Is there some
On Oct 26, 2011, at 7:08 PM, e wrote:
> [1 2 3] is a vector that is not evaluated. Since there is no overload with
> things that are, there's no need for a special mark.
If you type [1 2 3] into the REPL it is evaluated. The E part of the REPL
always runs. Some expressions evaluate to themsel
> user=> (take-while #(= (mod 20 %) 0) (apply (fn [x y] (rest (range
> (max x y [10 20]))
> (1 2)
>
> but i expect to have (1 2 5 10) because of (apply (fn [x y] (rest
> (range (max x y [10 20]) returns (1 2 3 4 5 6 7 8 9 10 11 12 13 14
> 15 16 17 18 19) and (mod 20 5) and (mod 20 10) sho
On Jul 4, 2011, at 7:52 AM, Michael Wood wrote:
> "Repository" need not imply anything to do with networking. I'm sure
> someone will correct me if I'm wrong, but I am pretty sure that the
> repository Steve [Lindsay] is talking about above is just a hierarchy of files
> in your home directory.
> I'd like to bundle a collection of (JSON) datafiles with a Clojure
> project source tree so that Clojure functions can reliably find and
> open those datafiles.
>
> What's the idiomatic way of going about this?
One idiomatic way to do this in Clojure is:
- store the files within a directory
On Jun 18, 2011, at 7:16 AM, Stuart Halloway wrote:
> To access a private var, simply deref through the var:
>
> @#'some-ns/some-private-var
As Rich noted here: http://groups.google.com/group/clojure/msg/513367afb934d41b
, when the var names a function and it's used in an expression emitted fr
On Oct 12, 2010, at 3:02 PM, tonyl wrote:
> (defn palindrome? [s]
> (= s (reduce str (reverse s
One opportunity to micro-optimize is to replace "reduce str" with "apply str".
str uses a StringBuilder object to build a string from its arguments. When you
use reduce, the code walks down s a
On Oct 11, 2010, at 10:28 PM, Vilson Vieira wrote:
> i've started a new lein project. it's my project.clj:
>
> (defproject test-processing "0.1.0-SNAPSHOT"
> :description "Test Processing"
> :dependencies [[org.clojure/clojure "1.2.0-master-SNAPSHOT"]
> [org.clojure/clojure-
On Oct 10, 2010, at 3:05 PM, HiHeelHottie wrote:
> I'm running lein swank and using slime-connect from emacs. When I use
> lein compile after making changes to a method, they don't appear to
> get picked up unless I bring down lein swank, bring it up again, slime-
> connect, etc.
>
> Is there a
I think I see the goal now: to allow calling with either a map or sequential
key-value pairs.
What you have appears correct and minimal for that purpose.
For a function taking a sequence, you can accomplish something similar without
a second arity by choosing to call directly or call using appl
The answer depends on what you're trying to accomplish.
Does this simpler definition allow you to call blah in the ways you want to?
(defn blah
[& {:as blah-map}]
;; do stuff with blah-map)
--Steve
On Oct 10, 2010, at 12:39 AM, Grayswx wrote:
> Recently, I've been coding functions that ta
On Sep 20, 2010, at 8:27 AM, Bart J wrote:
> Currently, it is not possible to insert duplicate rows
> using the clojure.contrib.sql module (specifically, the
> insert-values method).
>
> Please let me know, if I can add this.
>
> Thanks.
Are you saying you want to end up with duplicate rows or
On Sep 19, 2010, at 3:45 PM, Shantanu Kumar wrote:
> I simulated a similar recursive call and found it
> throws StackOverflowError at 5508 levels deep on a 32-bit Sun JVM (not
> server mode) on Windows 7.
Did your similar recursion include the lazy-seq form that wraps the
(apparently) recursive
On Sep 19, 2010, at 11:45 AM, Steven E. Harris wrote:
> Moritz Ulrich writes:
>
>> I think this would be a very nice extension for the repl - Saving the
>> forms for later-retrieval.
>
> As precedent, the Common Lisp reader uses the +, ++, and +++ variables¹
> to store the last three forms read
> (use '[clojure.contrib.lazy-seqs :only (primes)])
> (def ordinals-and-primes (map vector (iterate inc 1) primes))
>
> map macro has this format:
> (map function collection)
The map function takes a function and any number of collections:
http://clojure.github.com/clojure/clojure.core-a
On Aug 26, 2010, at 8:07 AM, Jacek Laskowski wrote:
> Hi,
>
> Right in the middle of Clojure and Rails - the Secret Sauce Behind
> FlightCaster [1] I came across print-dup function. I thought I'd find
> out a bit more about it using (doc print-dup) which eventually
> yielded:
>
> devmac:~ jacek
This change was made to some months ago, but some builds that followed the
obsolete convention have been hanging around. I removed them today.
On Apr 30, 2010, at 9:50 AM, Stuart Halloway wrote:
> There are plenty of recent SNAPSHOT builds:
> http://build.clojure.org/snapshots/org/clojure/clojur
On Apr 29, 2010, at 2:19 PM, MarkSwanson wrote:
> On Apr 29, 4:21 am, ataggart wrote:
>> I know it won't matter, but for posterity if nothing else...
>>
>> Functions named contains-key? and contains-val? would make a lot more
>> sense to me than the current contains? and new seq-contains?. Any
On Apr 24, 2010, at 1:40 AM, Phil Hagelberg wrote:
> So it seems like recently the only thing I use AOT for is producing
> -main functions that can be easily run from the command-line. I've
> found that an alternate to this is to use clojure.main -e, require the
> necessary namespace, and then ca
On Apr 16, 2010, at 2:06 AM, Brian Watkins wrote:
> Is there a way to interrupt the Repl when I've set to some kind of
> infinite loop without also shutting down the JVM entirely?
Yes there is. clojure-contrib includes add-break-thread! to do just that.
Here's an example:
% java -cp
clojure.j
On Apr 18, 2010, at 9:21 AM, Yonov wrote:
> Hi,
> I am trying to implement memoize myself and have stucked on one place
> for a lot of time. This is the code:
>
> (defn mymemoize [func]
> (let [dict (ref (hash-map))
> inner #((let
> [val (@dict %)]
>
On Mar 7, 2010, at 10:57 PM, CuppoJava wrote:
> Is there an elegant solution to this problem? I'm working around it by
> saving the original println in another variable before creating
> myprintln, but this isn't very clean.
In case by another "variable", you were referring to another "var":
One
On Mar 5, 2010, at 5:43 AM, rdunklau wrote:
> So, is there any function which exposes the
> PreparedStatement.executeUpdate() method directly ?
There is no such function currently. Is calling the Java method directly an
undesirable option?
--Steve
--
You received this message because you are
> Anyone doing milters in clojure? Are they reasonable to do on the JVM?
Not a direct answer, but for a task where we considered milters and JAMES, we
ended up being very happy with subethasmtp:
http://code.google.com/p/subethasmtp/
--Steve
--
You received this message because you are subscri
On Feb 25, 2010, at 8:21 PM, Glen Rubin wrote:
> whenever I try (load-file sqrs.clj) i get a no source file exception.
Does (load-file "sqrs.clj") work?
--Steve
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To post to this group, send email to c
On Feb 6, 2010, at 10:08 AM, Tommy wrote:
> I am unfamiliar with maps. How do I add myself to this map?
Figuring that out has taken me a long time on at least two occasions...
The key is you need to be signed in to make changes.
- At the upper right of the page is "sign in". Use that to sign
On Feb 2, 2010, at 8:40 PM, Stuart Halloway wrote:
> In teaching people Clojure, non-intuitive behavior with use/require is the #1
> problem for beginners, by a mile. I believe we need both ordinary function
> and macro versions, and I am pretty sure that a well-considered patch
> implementing
On Jan 31, 2010, at 8:35 AM, Gabi wrote:
> Is there any efficient way to get the number of times a given
> function was executed (in run time not during profiling)? Maybe with
> some clever use of its metadata ?
Clojure function calls are low-level operations for efficiency. I'm not aware
of any
On Jan 15, 2010, at 4:01 AM, Stephen C. Gilardi wrote:
> On Jan 15, 2010, at 3:26 AM, Sean Devlin wrote:
>
>> user=> (seq [])
>> nil
>>
>> Why is nil returned, instead of an empty sequence?
>
> There is no such thing as an empty seq.
This was tru
On Jan 15, 2010, at 3:26 AM, Sean Devlin wrote:
> user=> (seq [])
> nil
>
> Why is nil returned, instead of an empty sequence?
It's fundamental to Clojure's seq abstraction that every seq has a first. There
is no such thing as an empty seq. If you call the seq function on an empty
collection,
On Dec 25, 2009, at 6:13 PM, Piotr 'Qertoip' Włodarek wrote:
> What is the most clear and idiomatic way to convert arabic numbers to roman
> notation?
Though it may miss the true goal of the exercise, there's also this option:
user=> (clojure.contrib.pprint/cl-format nil "~...@r" 3991)
On Dec 19, 2009, at 7:50 PM, Chouser wrote:
> I've updated http://clojure.org/transients to reflect vectors and
> hash-map support of 'transient' in 1.1.0
Hash-sets appear to work in 1.1.0 as well.
--Steve
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You received this message because you are subscribed to the Google
Groups "Clojure"
On Nov 8, 2009, at 6:03 PM, Phil Hagelberg wrote:
> (add-hook 'clojure-mode-hook (lambda () (set (make-local-variable
> 'before-save-hook) 'delete-trailing-whitespace))
One wrinkle here is that in Clojure "," is whitespace. It would be nice not to
strip out trailing commas within doc strings.
On Dec 19, 2009, at 5:23 PM, Stefan Kamphausen wrote:
> 1. Is my explanation correct?
It is. The binding form operates on the var, it doesn't affect name resolution
within the binding form's body. *val* within the body of the binding still
resolves to the let-bound local. While *val* is shadow
> I was experimenting with transients, and they don't seem to work for
> sorted collections:
>
> user=> (transient (sorted-map 1 2 3 4))
> java.lang.ClassCastException: clojure.lang.PersistentTreeMap cannot be
> cast to clojure.lang.IEditableCollection (NO_SOURCE_FILE:0)
>
> user=> (transient (s
> I have following script to show the progress status in Console. But I
> am having an issue where print only prints final string (after 100
> times loop finished) not those in between thread sleeps but println
> prints out all in between. I am pretty new to Clojure ( Lisp for the
> matter) and hav
On Dec 13, 2009, at 6:54 PM, Stuart Halloway wrote:
> That's great. I wouldn't have expected it to work. Do you think this is by
> design or coincidental/subject to change?
The expression I gave was:
@#'clojure.core/spread
equivalent to:
(deref (var clojure.core/spread))
I s
On Dec 13, 2009, at 3:19 PM, Stuart Halloway wrote:
> (1) Is there already a form that does this?
Hi Stuart,
I think the trick is resolving manually:
user=> @#'clojure.core/spread
#
user=> (@#'clojure.core/spread [:a :b [:c :d]])
(:a :b :c :d)
user=>
I
On Dec 11, 2009, at 5:08 AM, Laurent PETIT wrote:
> But then, we could even go one level deeper: not only provide a particular
> instance that would allow to quit the REPL, but a set of instances. And if
> the returned value of the call to the REPL returns one of the instances in
> the set, th
On Dec 9, 2009, at 3:54 PM, HerbM wrote:
> As I was preparing the post a message requesting help for
> an error (see below) generated when I entered the quick start
> suggest, I realized that suggestion is generic, and not technically
> accurate.
>
>java -cp clojure.jar clojure.lang.Repl
>
On Dec 10, 2009, at 7:18 PM, Graham Fawcett wrote:
> Thank you! I'm already a registered Clojure contributor. Tomorrow I'll
> prepare a ticket and attach the patch.
Excellent!
> If you'd rather discuss it first on or off-list, let me know & I'll
> hold off on the ticket.
Please do put in a tic
Hi Graham,
> To whom should I send a pull-request for an enhancement for
> clojure.contrib.sql? I see that scgilardi is listed as the author, but
> I'm not very clear on how the contrib community works.
The contributing process is described at:
http://clojure.org/contributing
The patch
On Dec 10, 2009, at 9:10 AM, Rich Hickey wrote:
> I'm happy to announce I have implemented this fine-grained locals
> clearing in the compiler, in the 'new' branch. It should automatically
> cover all cases in which the code doesn't explicitly reuse the head -
> including non-tail usage, destruct
On Dec 5, 2009, at 2:48 PM, Christopher Wicklein wrote:
> Greetings!
Hello!
> I'd like to create an instance of a Java class like this:
>
> let [foo (Bar.)]
>
> but, I'd like the type specified by Bar to not be static, e.g. something like
> this:
>
> let [foo (:type params).]
>
> but, I ca
On Dec 3, 2009, at 10:31 AM, Roman Roelofsen wrote:
> Are there any plans to add -$> to core or contrib?
The rules on contrib are that the work must be original to the author. Even
with Andrew's disclaimer that it be considered public domain, he would still
need a contributor agreement in plac
On Nov 16, 2009, at 5:56 AM, prhlava wrote:
> No big deal, the fix is simple - this is heads up if more people find
> their code broke with over-flow to infinity with the new version of
> clojure.
>
> It looks that float type "propagates" into arithmetics (and it did not
> before) - better expla
On Nov 10, 2009, at 9:08 PM, John Harrop wrote:
(ns foo.bar.baz
(:use [clojure.contrib.core :only (seqable?)]))
(and thus violates the usual clojure rule of using vectors rather
than lists for groupings that are not invocations -- that is,
function calls, macro calls, or special form cal
On Oct 16, 2009, at 8:12 AM, Folcon wrote:
Is there a cannonical way to create executable jar files?
I've uploaded a shell script that builds an example executable jar
file to
http://groups.google.com/group/clojure/web/build-executable-jar.sh
Here's the program the executable jar runs
On Oct 7, 2009, at 12:47 AM, Mark Tomko wrote:
This is pretty much what I'd had in mind.
Thanks for the comments and suggestions all.
I don't see how the text of
the Exception is set by the macro, but it'd be really spectacular if
the message were more clear. Is that message coming from th
On Oct 7, 2009, at 5:19 AM, Meikel Brandmeyer wrote:
Or is setting the validator calling it on the already set value?
Yes, the validation mechanism calls the validator on the already set
value.
--Steve
smime.p7s
Description: S/MIME cryptographic signature
On Oct 2, 2009, at 10:29 AM, Mark wrote:
Is there a way to make a declaration in Clojure that cannot be rebound
later? Ideally, I'd like something that fails if I try to do this:
(def myname "mark")
; ...more code, elided...
(def myname "Mark")
Along these lines, I was thinking of adding def
On Oct 4, 2009, at 5:04 PM, Mark Volkmann wrote:
Minor technicality ... Vars are a reference type, but deref and @
don't work with them.
I'm guessing you're thinking of an interaction like this:
user=> (def a 3)
#'user/a
user=> @a
java.lang.ClassCastException: java.
On Oct 3, 2009, at 1:50 PM, Stuart Halloway wrote:
Is there a principled reason for this? I have written some code that
(unintentionally) limits itself to refs because it assumes that all
reference types can sit in function position.
This discussion:
http://groups.google.com/group/clojure/br
On Sep 11, 2009, at 10:58 AM, Lauri Pesonen wrote:
2009/9/11 Rich Hickey :
We should fix the doc. Patch welcome for this.
Ticket #189 - I've provided a patch following Stephen's suggested
doc string.
Thanks very much!
--Steve
smime.p7s
Description: S/MIME cryptographic signature
On Sep 8, 2009, at 2:14 AM, Timothy Pratley wrote:
According to the docstring compare returns -1, 0 or 1:
user=> (compare \b \g)
-5
We could fix the doc along the lines of:
"Comparator. Returns a negative number, zero, or a positive number
when x is logically 'less than', 'equal to', or 'g
On Aug 27, 2009, at 12:37 AM, ngocdaothanh wrote:
As I understand clojure.contrib.sql's with-connection opens DB
connection at the beginning and closes it at the end of each call.
That's correct.
How do I create a connection pool so that with-connection can reuse
connections?
clojure.cont
On Aug 23, 2009, at 8:21 PM, Stan Dyck wrote:
I'm still new to this so bear with me.
Welcome.
I'm trying to apply a function to a seq-able thing to produce a
hashmap. So for instance say the function is (inc 3).
I'd like to write a function that does
[1 2 3] --> {1 4, 2 5, 3 6}
Can some
On Aug 19, 2009, at 12:43 PM, Howard Lewis Ship wrote:
[java] java.lang.Exception: Name conflict, can't def assoc!
because namespace: clojure.contrib.repl-ln refers
to:#'clojure.core/assoc! (repl_ln.clj:71)
The current (HEAD) version of clojure.contrib/repl_ln.clj no longer
defines asso
On Aug 16, 2009, at 11:56 PM, tsuraan wrote:
(defh a
[b:String [c:Double :as list:java.util.List]
{d:java.util.Random :d}]
(.toCharArray b)
(.size list)
(.floatValue c)
(.nextInt d))
What's that :as in the [ c:Double :as list:java.util.List ] vector?
The entire expression you
On Aug 16, 2009, at 7:38 PM, Chas Emerick wrote:
On Aug 16, 2009, at 6:29 PM, Stephen C. Gilardi wrote:
Very cool! I like this a lot. Would you be up for writing some doc
strings and including it in clojure.contrib.def?
Yeah, I could do that.
I don't actually think it's practi
On Aug 13, 2009, at 4:52 PM, Chas Emerick wrote:
I've actually been using it at the REPL here and there, and I've found
it pretty pleasant -- it's a very pretty way to hint args compared to
#^, and arg:Type ordering makes for easy readability (e.g. you can
very easily scan an arg form and see w
I have to parse some XML files with c.x/parse. However the files
contain UTF-8 characters, which end up as '?' after being parsed by
c.x/parse. Is there some possibility to correctly parse the files? I
suspect there is some settings somewhere in my Clojure/JVM/System
which makes the whole thing fa
On Jul 17, 2009, at 9:05 AM, AlamedaMike wrote:
As I say, technically very trivial, but it violates the principal of
least surprise (for me). I bring it up only because of reasons of
broader acceptance by the business community. I know how some of them
think, and even trivial stuff like this wi
On Jul 16, 2009, at 11:50 AM, Laurent PETIT wrote:
what do you mean ? For what I know, the output streams have nothing
to do with formatting ?
You're right, Laurent, thanks for the correction.
REPL output is printed using prn which (for Doubles) ultimately calls
".toString" on the Double
On Jul 16, 2009, at 10:13 AM, flodel wrote:
I have a Clojure script that reads numbers in a normal format like
0.012, but after processing, returns in a scientific format, for
example, 8.03E-6
Is there a way to turn this scientific notation off?
Numbers are stored internally in a binary
On Jul 13, 2009, at 10:26 PM, sailormoo...@gmail.com wrote:
user=> (try (Integer/parseInt "x") (catch Exception _ 0))
0
user=> (defmacro parse-int [a default] `(try (Integer/parseInt ~a)
(catch Except
ion _ ~default)))
#'user/parse-int
user=> (parse-int "x" 0)
java.lang.Exception: Can't bind qu
On Jul 13, 2009, at 11:45 AM, Morgan Allen wrote:
The speed difference isn't the main thing- but I *was* under the
impression that the only way for java to communicate with clojure was
using AOT class compilation.
OK, cool. That is another benefit of AOT compilation. The primary use
for :ge
On Jul 13, 2009, at 9:56 AM, jon wrote:
It would seem cleaner if the java Keyword.intern() and Symbol.intern()
methods were symmetrical and used the same way in core.clj.
It looks unintended to me. Rich, I can provide a patch if a ticket and
patch are welcome.
--Steve
smime.p7s
Descrip
On Jul 12, 2009, at 4:41 PM, Morgan Allen wrote:
Fair enough. However, what I had in mind was that I could simply
compile one namespace that would then act as a sort of 'bootstrap
loader' for other clojure source, so that I wouldn't have to recompile
manually all the time.
Rayne's suggestion
On Jul 12, 2009, at 7:28 AM, Morgan Allen wrote:
Thanks for the info- it works just fine now. A couple of questions,
though:
1- How would I change the 'classes' directory to something else?
There are at least two ways:
You can specify it as a property on the command line you use to launch
On Jul 11, 2009, at 9:12 AM, alfred.morgan.al...@gmail.com wrote:
java -cp clojure.jar clojure.main
Followed by:
(compile 'sov.sim.character)
The directory containing "sov/sim/" and the compilation destination
(which defaults to "classes") must also be in classpath. In your test,
classpa
On Jul 10, 2009, at 11:05 AM, markgunnels wrote:
That name sounds much better than mine and sorry for breaking process.
The code was definitely a trivial modification of code you wrote.
In all the fuss over procedure, I see I forgot to thank you for your
request and your report of success w
On Jul 10, 2009, at 9:22 AM, markgunnels wrote:
I wanted to recommend the following method be added to
clojure.contrib.sql (stolen directly from do-prepared). I have used it
successfully with Oracle stored procedure calls. Please let me know if
I'm not posting to the right place or in the right
On Jul 8, 2009, at 9:11 AM, Mike wrote:
What I'm missing is why I can't print a function. I understand that
most of the functions I write use quite a few macros, and after
expansion into the core forms it looks shredded...but isn't there any
way for me to see a representation of this "source"
On Jul 7, 2009, at 3:29 PM, Stuart Sierra wrote:
If you really don't know what the class is (for example, you get a
Class object returned by some library function) then you can use the
Java Reflection API to call the static method. See
http://java.sun.com/docs/books/tutorial/reflect/
If you
On Jul 7, 2009, at 5:51 AM, John Harrop wrote:
Somehow, code that is treated as valid when compiled a function at a
time is treated as invalid when compiled all at once. That pretty
much proves it's an implementation bug, since the same code can't
both be buggy and be fine at the same time
On Jul 6, 2009, at 3:13 PM, Tom Emerson wrote:
Thanks Paul, for the quick response.
On Mon, Jul 6, 2009 at 12:56 PM, Phil Hagelberg
wrote:
That's right. Side note to folks with commit access: it would be a
good
idea to check in a note to the deprecated repositories telling people
where to
On Jul 5, 2009, at 8:12 PM, Mark Volkmann wrote:
I'd appreciate it if someone
could look it over and let me know if I've done anything that isn't
very idiomatic.
A few recommendations just at the "look and feel" level:
- use doc strings for functions in place of comments
- global delete of
On Jul 5, 2009, at 2:01 AM, John Harrop wrote:
and got:
#32 in class file com/mycompany/myfile$eval__14598 (NO_SOURCE_FILE:0)>
Are there large literals elsewhere in the same namespace?
Here's some info from a previous report of this error:
http://groups.google.com/group/clojure/browse_frm/t
On Jul 4, 2009, at 4:02 AM, Meikel Brandmeyer wrote:
Is there some specific reason for that or could load be adapted to
also return the last value evaluated?
I experimented with this, got it to work for a simple case, and
prepared my initial reply below. In working with the idea some more
On Jul 2, 2009, at 3:21 PM, Mark Volkmann wrote:
Now it is using a vector instead of a list. Too
bad there is no push function in core. I'm using conj.
conj is the correct thing to use for the push operation.
Here's my take on it based on yours. This bails early as soon as there
is a misma
On Jul 2, 2009, at 1:48 PM, Mark Volkmann wrote:
(defn match [prev-char next-char]
(cond = prev-char
\( (= next-char \))
\[ (= next-char \])
true false))
It looks like you intended condp here instead of cond.
Your test works as expected if you make that change. However, there's
a
On Jul 2, 2009, at 2:00 PM, Mark Volkmann wrote:
I run it with "clj demo.clj foo bar baz" and get this output:
clojure.lang.ArraySeq
2
I get the same output with "clj demo.clj -- foo bar baz".
Why doesn't it output 3?
That depends on your definition of clj.
Here's what I get without using
On Jun 30, 2009, at 5:30 PM, Kai wrote:
From scheduling I know that there are CPU-bound and IO-bound
processes. Perhaps send-off tends to hold off on yielding for longer
durations since it expects frequent interrupts. If this is the case, I
think it would be useful to elaborate on that in the d
On Jun 29, 2009, at 10:11 AM, Nicolas Oury wrote:
I am not sure, but I believe it's due to *warn-on-reflection* being
bound by the compiler/REPL before evaluating (set! *warn-on-
reflection*
true).
When I looked, the REPL was called within a macro 'with-bindings repl'
that expands to
(bindin
On Jun 28, 2009, at 3:03 PM, samppi wrote:
I use Clojure's classes a lot in my multimethods. Is there any way to
abbreviate them; that is, is there a method to refer to
clojure.lang.APersistentList as APersistentList? I've tried (use
'clojure.lang) and (require ['clojure.lang :as 'c]), but neit
On Jun 28, 2009, at 11:48 AM, Handkea fumosa wrote:
On Jun 28, 11:27 am, Rich Hickey wrote:
Deducing it doesn't contain 5 because it was passed a key
incomparable
to some other key seems like a stretch to me, and bug-hiding.
Clojure is relatively free of exception catching in normal flow
On Jun 28, 2009, at 12:07 AM, Handkea fumosa wrote:
user=> (list? '(1 2 3))
true
user=> (list? (cons 4 '(1 2 3)))
false
user=> (doc cons)
-
clojure.core/cons
([x seq])
Returns a new seq where x is the first element and seq is
the rest.
nil
user=>
On Jun 26, 2009, at 11:09 AM, samppi wrote:
I'm considering changing rep+'s documentation to state that it will
return a "collection" rather than a "vector", and then just use cons
without vec.
You might also consider describing it as a "seq". If you use "cons",
the object returned will be
On Jun 25, 2009, at 5:00 PM, Four of Seventeen wrote:
Got this doing a load-file:
#
That error appears to be coming from a Java-level class loader (see
the ultimate "caused by" in the stack trace). If you search for it
using Google, you'll see it's appeared in contexts other than Clojure
On Jun 25, 2009, at 11:43 AM, CuppoJava wrote:
Is there a "print" command that doesn't separate it's arguments using
spaces? I wrote my own function to work-around this but hopefully it's
already been done for me.
(defn write [& strings]
(print (apply str strings)))
Hi Patrick,
Clojure als
On Jun 24, 2009, at 7:02 PM, arasoft wrote:
Why does this work?
(take-while (complement #{\a\e\i\o\u}) "the-quick-brown-fox")
When I do something similar, like
(take-while (complement #(Character/isWhitespace %)) "the-quick-brown-
fox")
I have to deal with the parameter explicitly ("%"). Ho
On Jun 24, 2009, at 6:13 PM, CuppoJava wrote:
Is there a nice way of doing this without having to go back to using
Java's string syntax?
I don't see a nice way to do it.
You can use either
(java.util.rexex.Pattern/compile my-str)
or
(with-in-str (str \# \" my-str \") (read))
to crea
On Jun 24, 2009, at 6:44 PM, arasoft wrote:
This also works:
(into [-1] [0 1 2 3 4])
but I am more than uncertain whether it is "proper".
Generally, the need to insert at the beginning of a vector should
trigger some close scrutiny as to whether vector is the right data
type to use in thi
On Jun 24, 2009, at 5:52 PM, tsuraan wrote:
Does clojure still have a concept of a namespace's exports? I'd like
to be able to list, in my ns declaration, the "publicly available"
functions that my module has, but I'm not seeing any way to do this.
It looks like there used to be an export func
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