On 16.02.2009, at 23:38, jim wrote:
> Here's a shot at implementing a monad transformer for the state
> monad. Any chance of getting it added to clojure.contrib.monads?
If you are on the list of contributors (those who have signed a
contributor agreement), yes, of course!
Konrad.
--~--~---
Hello,
I wanted to try it too, so I grabbed Timothy's version, and did some
improvements (I hope they are, feedback welcome ! :-) over it.
Something I corrected is the removal of null or blank items, as in the first
python version.
I also got rid of the assoc by using update-in.
And I felt that t
On Feb 17, 2009, at 0:17, Stuart Sierra wrote:
> As I understand it, every Var has a name, which is a symbol, but the
> name is an inherent property of the Var and cannot be changed. You
Unless you create a var using with-local-vars, right?
Konrad.
--~--~-~--~~~-
I can see a minor problem with ClojureCLR, that is, "j" in clojure stands
for JVM, right? So it's a bit messy.
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"Clonure" (n for dot *n*et), as in : "Clonure, a dot net clone of Clojure"
(ok, sorry ;-)
2009/2/17 Lucio Fulci
> I can see a minor problem with ClojureCLR, that is, "j" in clojure stands
> for JVM, right? So it's a bit messy.
>
>
> >
>
--~--~-~--~~~---~--~~
You
On Tue, Feb 17, 2009 at 11:05 AM, Laurent PETIT wrote:
> Hello,
>
> I wanted to try it too, so I grabbed Timothy's version, and did some
> improvements (I hope they are, feedback welcome ! :-) over it.
>
> Something I corrected is the removal of null or blank items, as in the first
> python versi
Thanks Michael
2009/2/17 Michael Wood
>
> On Tue, Feb 17, 2009 at 11:05 AM, Laurent PETIT
> wrote:
> > Hello,
> >
> > I wanted to try it too, so I grabbed Timothy's version, and did some
> > improvements (I hope they are, feedback welcome ! :-) over it.
> >
> > Something I corrected is the remo
On Feb 16, 2009, at 20:23, Rich Hickey wrote:
> It seems the Sequence/ISeq dichotomy was a sticking point for many.
> After some tweaking, I've been able to get rid of Sequence entirely,
> SVN 1284+ in lazy branch. This is source compatible with 1282 (first/
> rest/next), except that sequence? no
Haha. I just noticed my typo in the previous post. Disregard that. :|
On Feb 17, 3:22 am, Laurent PETIT wrote:
> "Clonure" (n for dot *n*et), as in : "Clonure, a dot net clone of Clojure"
>
> (ok, sorry ;-)
>
> 2009/2/17 Lucio Fulci
>
> > I can see a minor problem with ClojureCLR, that is, "j"
Fantastic news, David. This should help the spread of Clojure.
Although I like "Bonjure" as a name, and even though two syllable
names are generally considered best by marketers, I think ClojureCLR
is best for branding purposes. It helps spread the Clojure meme and it
linguistically supports the
redhotmonk a écrit :
> When you look at resulting hash, which you get by calling
> "(initialize-domain 4 4 0.3)",
> you see that the 4-component value vector of every key is "not so"
> random. In fact it is the same vector every time.
> But when I modify the "initialize-domain" function by deleti
On Feb 16, 2009, at 10:34 AM, Stuart Halloway wrote:
>
> David Sletten sent me this erratum:
>
> <<
> At the beginning of section 2.4 we have "The symbol user/foo refers to
> a var which is bound to the value 10." Under the next subsection
> "Bindings" we have "Vars are bound to names, but there
Kev,
I didn't make it, however, I guess the issue was on namespace and not on
the instruction given. I will try again and again until I get my head around
namespace, or could you help me to jump start?
Emeka
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> "Clonure" (n for dot *n*et), as in : "Clonure, a dot net clone of Clojure"
hahaha nice :) In the same vein:
Clocure (c for clr) pronouced closer or cl oh cure (is that the cure
for common lisp or CLR?)
*chuckle* Ok ok I'm not being serious.
--~--~-~--~~~---~--~~
Y
On Feb 17, 2009, at 4:40 AM, Konrad Hinsen wrote:
>
> On Feb 16, 2009, at 20:23, Rich Hickey wrote:
>
>> It seems the Sequence/ISeq dichotomy was a sticking point for many.
>> After some tweaking, I've been able to get rid of Sequence entirely,
>> SVN 1284+ in lazy branch. This is source compati
Hi Laurent,
Thanks for those improvements. I agree that it would be nice in this
case to be able to 'update-in' an arbitrary tree. I played around
using zippers to achieve this with some success, however it was very
verbose. Next I tried implementing update-in-list which seemed a bit
more obvious
Jesse,
Could I see your own version.
Emeka
>
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On Feb 16, 7:52 pm, samppi wrote:
> You can nest structs in structs like this:
>
> (defstruct rect :height :width)
> (defstruct colored-rect :color :shape)
>
> (def subject (struct colored-rect :red (struct rect 50 30)))
>
> (println subject) ; prints {:color :red, :shape {:height 50, :width
> 30
A week or 2 ago, Lau_Of_DK asked me very nicely to stop talking so off-
topic in #Clojure. I mentioned that we should have an Off-topic
channel for people who would just like to talk, because just about
every other language's channel on freenode has an off topic channel
(#haskell-blah for instance
> Jesse,
> Could I see your own version.
Haha, I was afraid someone would say this.
Here is my embarrassingly bad (but working) version:
(defn build-table []
(def num-cols 3)
(def selected-row 0)
(def selected-col 0)
(def all-strings ["apple" "cat" "dog" "" "frog" "elephant"
"gorilla"])
I've been working on Xronos which is also a c# version of clojure (I
need to be careful to not use the work port, since it doesn't share
any code with clojure). It compiles to the DLR as well. It is located
here:
http://www.bitbucket.org/stefanrusek/xronos/wiki/Home
One big difference is that Xr
On Feb 16, 11:35 pm, dmiller wrote:
> Porting Clojure to the CLR is hardly an original idea. Rich started
> with dual JVM/CLR implementations. And inquiries have been made on
> this group any number of times.
Yah, I posted one of those queries. My interest is future-proofing
Clojure, because
Two of the subsystems in my app project might usefully be packaged and
distributed as libraries, if people want them. I thought I'd describe
them, so as to discover whether I should be planning for that.
Why not post this to Rich's "Got a Clojure Library?" thread? Because
that thread is presently
> I'm up for suggestions on the name. The obvious ones:
>
> - Clojure.net
> - ClojureCLR
> - IronClojure (paralleling IronPython/IronRuby, unless MS has Iron
> trademarked.)
> - CLjR (too cute)
>
> Perhaps Rich will have a preference. He'll have to live with it
> longer than anyone and has
>Haha, I was afraid someone would say this.
>Here is my embarrassingly bad (but working) version:
I won't say that, you ported Python to Clojure while maintaining Python
spirit. That's great!
Emeka
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On Feb 17, 9:03 am, Craig Andera wrote:
> > I'm up for suggestions on the name. The obvious ones:
>
> > - Clojure.net
> > - ClojureCLR
> > - IronClojure (paralleling IronPython/IronRuby, unless MS has Iron
> > trademarked.)
> > - CLjR (too cute)
>
> > Perhaps Rich will have a preference.
2009/2/17 Emeka
> >Haha, I was afraid someone would say this.
> >Here is my embarrassingly bad (but working) version:
>
> I won't say that, you ported Python to Clojure while maintaining Python
> spirit. That's great!
Are you serious, or is this a joke somewhat bashing the python language ?
>
On Tue, Feb 17, 2009 at 7:01 AM, David Sletten wrote:
>
> In a language such as Common Lisp where every variable is (effectively) a
> reference variable, we have three concepts: names, variables (references),
> and values (referents). These three things have two connections. In an
> orthodox (per
On Feb 17, 9:56 am, mikel wrote:
> I'll let the level of interest
> guide me in whether I package them for more general distribution.
I am very interested in both of these subsystems and would love to see
you package them as clojure.contrib libraries. Hopefully others feel
the same and we'
>
> I won't say that, you ported Python to Clojure while maintaining Python
>> spirit. That's great!
>
>
> Are you serious, or is this a joke somewhat bashing the python language ?
>
>
I guess he meant maintaining the spirit of the original python code. The
original code was overtly long and non-i
Has anyone had experience creating clojure applications that use the
embedded derby database driver? I am having an issue where I am unable
to get the derby embedded database to shut down properly from within
clojure.
More specifically, whenever a java app accesses a derby embedded
database, it c
Yeah, I think you're right. That's "Python spirit" in place of "original
code spirit" that surprised me.
2009/2/17 Dan
> I won't say that, you ported Python to Clojure while maintaining Python
>>> spirit. That's great!
>>
>>
>> Are you serious, or is this a joke somewhat bashing the python lang
>
>
> > So, as a long-time .NET guy, IronClojure seems like the best name, in
> > terms of making it obvious what it does: it's like IronRuby/Python,
> > but it's Clojure. Failing that, it seems like NClojure fits the
> > pattern of other JVM-ported efforts. I realize that there's already an
> > En
Hi
On Tue, Feb 17, 2009 at 4:03 PM, Jesse Aldridge wrote:
>
>> Jesse,
>> Could I see your own version.
>
> Haha, I was afraid someone would say this.
> Here is my embarrassingly bad (but working) version:
>
> (defn build-table []
> (def num-cols 3)
> (def selected-row 0)
> (def selected-col 0
I'm still not *entirely* clear about the mappings from symbols and
namespaces to Vars. I think I sort of understand how it works in practical
terms, but this is a confusing area and getting the terminology nailed down
would be a big help.
On Tue, Feb 17, 2009 at 10:10 AM, Chouser wrote:
>
> On
On Mon, Feb 16, 2009 at 12:05 PM, Perry Trolard wrote:
>
> I agree with the majority of posters that the breaking changes in the
> service of optimal names is the right way to go.
>
> I found the explanation & recipe for porting at clojure.org/lazier
> clear & easy to follow. I didn't do full por
On Feb 17, 2009, at 10:32 AM, Dan wrote:
>
> > So, as a long-time .NET guy, IronClojure seems like the best name,
> in
> > terms of making it obvious what it does: it's like IronRuby/Python,
> > but it's Clojure. Failing that, it seems like NClojure fits the
> > pattern of other JVM-ported eff
I have now acquired 4 regulars who agree with me! We need more! Join
people join! :p
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Hi,
How come the following code does not throw an exception?
(defn foo []
(do
(map (fn [_] (throw (RuntimeException. "fail"))) [1 2])
"no exception"))
this however does throw exception:
(defn foo []
(map (fn [_] (throw (RuntimeException. "fail"))) [1 2]))
Is this a bug or am I miss
First, "map" returns a lazy seq. Second, "do" only returns the result
of the last expression.
So, the mapping you do in your "do" form is never executed because you
never ask for the result.
Try wrapping the mapping in "dorun" to explicitly realize the lazy seq
from your mapping:
(defn foo []
+1
I actually think that #clojure is very active. Of the channels I
frequent/lurk in, only #git regularly surpasses #clojure in number of
messages per (my) day. Maybe that says more about my irc interests, so
take that as you will.
#clojure-offtopic doesn't have much poetry to it, but I'l
Names really weren't my priority here. I'll be happy to link -offtopic
to another channel with a different name if someone thinks of a better
name somewhere down the road ^_^.
On Feb 17, 10:15 am, Chas Emerick wrote:
> +1
>
> I actually think that #clojure is very active. Of the channels I
>
Map is lazy. You are presumably executing (foo) at the REPL. In the
first foo, since the value calculated by map is unused, no elements of
the seq are calculated and your anonymous function never runs. In the
second foo, since the function actually returns the value and the REPL
wants to print it,
Thank you for the quick answers. I'm new to clojure and functional
programming so this "lazy"-stuff is new to me, but it makes sense and
is really cool.
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On Feb 17, 9:20 am, Raffael Cavallaro
wrote:
> On Feb 17, 9:56 am, mikel wrote:
>
> > I'll let the level of interest
> > guide me in whether I package them for more general distribution.
>
> I am very interested in both of these subsystems and would love to see
> you package them as clojure.c
Is your Clojure app running in a REPL? I've run into situations where
it seems like the Derby lock file doesn't go away until the Clojure
process terminates.
-Stuart Sierra
On Feb 17, 10:28 am, BrianS wrote:
> Has anyone had experience creating clojure applications that use the
> embedded der
While kicking the tires, I encountered this "behavior":
user=> (let [a (atom 0)] {(swap! a inc) 1 (swap! a inc) 2 3 3 4 4 5 5 6
6 7 7 8 8 9 9})
{3 3, 4 4, 5 5, 6 6, 7 7, 8 8, 9 9, 1 2}
user=> (let [a (atom 0)] {(swap! a inc) 1 (swap! a inc) 2 3 3 4 4 5 5 6
6 7 7 8 8})
{1 1, 2 2, 3 3, 4 4, 5 5,
That's odd.
Might you have uncovered a bug regarding:
user=> (class {1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9})
clojure.lang.PersistentHashMap
user=> (class {1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8})
clojure.lang.PersistentArrayMap
While with the atom code we have:
user=> (class (let [a (atom 0)] {(swap! a
Hello everybody!
How do I create a web service on Clojure? Thank you.
Fahed
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I've merged the lazy branch into trunk, SVN rev 1287
Please do not rush to this version unless you are a library/tool
developer. Let them do their ports and chime in on their progress.
Move only when the libs/tools you depend upon have been ported.
Thanks to all for your feedback and input!
Ric
I think I got it :)
The two (swap! a inc) forms are added to the map at read-time - which
is before they are evaluated. However, since we are associating the
(swap! a inc) key with a value twice, only the last one counts. So the
atom is inc'ed to 1 once (because keys can only be in the map once),
I've seen the same thing with embedded Derby while using SLIME. From within the
REPL I was always able to reconnect to the same database, so it didn't really
impact me. Outside the REPL I didn't notice a problem.
If it holds you up, here's one observation you might investigate. Calling
(.close
Just to clarify; I think PersistentArrayMap is too naïve:
user=> {1 1 1 1 1 1 2 2}
{1 1, 1 1, 1 1, 2 2}
Also, this is rev 1286 (just prior to lazy-branch merge thingy).
On Tue, Feb 17, 2009 at 8:50 PM, Christian Vest Hansen
wrote:
> I think I got it :)
>
> The two (swap! a inc) forms are added
Christian Vest Hansen a écrit :
> Just to clarify; I think PersistentArrayMap is too naïve:
>
> user=> {1 1 1 1 1 1 2 2}
> {1 1, 1 1, 1 1, 2 2}
>
> Also, this is rev 1286 (just prior to lazy-branch merge thingy).
>
Fixing array-map would make the two tests consistent but I'm not sure
that (le
> As far as I understood, the rules are that it should be derived from Clojure
> and sports either an N or a CLR. So I suggest Conjure
>
> It looks like clojure, sounds pleasing, and sounds lispish (conj). And Lisp
> to me sounds like magic (in the Arthur C. Clarke meaning that it is a
> techno
(ns html-table
(:use clojure.contrib.prxml)
(:use clojure.contrib.seq-utils))
(defn print-table [grid selected]
(prxml
[:table {:cellpadding 30, :bgcolor "#aa"}
(for [[x row] (indexed grid)]
[:tr
(for [[y cell] (indexed row)]
[:td {:bgcolor (if (=
On Tue, Feb 17, 2009 at 9:08 PM, Christophe Grand wrote:
>
> Fixing array-map would make the two tests consistent but I'm not sure
> that (let [a (atom 0)] {(swap! a inc) 1 (swap! a inc) 2 }) should
> evaluate to {1 2}.
That would make it two distinct issues, as I see it. One for
array-map, and
Fahed Alrafidi wrote:
> How do I create a web service on Clojure? Thank you.
Depends what sort of web service. A simple RESTFUL web service is
pretty easy to develop in Compojure:
(ns web-service
(:use compojure))
(defservlet math-servlet
(POST "/add"
(let [x (Integer/parseInt (params :
On Tue, Feb 17, 2009 at 2:43 PM, Rich Hickey wrote:
>
> I've merged the lazy branch into trunk, SVN rev 1287
>
> Please do not rush to this version unless you are a library/tool
> developer. Let them do their ports and chime in on their progress.
> Move only when the libs/tools you depend upon ha
On Feb 17, 3:19 pm, Craig Andera wrote:
> > As far as I understood, the rules are that it should be derived from
> > Clojure and sports either an N or a CLR. So I suggest Conjure
>
> > It looks like clojure, sounds pleasing, and sounds lispish (conj). And Lisp
> > to me sounds like magic (in
On Feb 17, 3:30 pm, Christian Vest Hansen
wrote:
> On Tue, Feb 17, 2009 at 9:08 PM, Christophe Grand
> wrote:
>
> > Fixing array-map would make the two tests consistent but I'm not sure
> > that (let [a (atom 0)] {(swap! a inc) 1 (swap! a inc) 2 }) should
> > evaluate to {1 2}.
>
> That would
That was fast! ;-)
Rich, I am porting test_clojure and old 'cycle' worked as:
(cycle []) => nil
Currently:
(cycle []) => java.lang.StackOverflowError
Frantisek
On Feb 17, 8:43 pm, Rich Hickey wrote:
> I've merged the lazy branch into trunk, SVN rev 1287
>
> Please do not rush to this version
Since -social might imply the normal channel is .. err .. not (which
would be most inaccurate!), how about #clojure-cafe?
- Haskell has a "Cafe" forum / mailing list
- Additional cute point: the first 16-bit of a Java class file is
0xCAFE
Best regards,
--
Michel S.
On Feb 17, 11:27 am, Rayne
On Tue, Feb 17, 2009 at 10:07 PM, Rich Hickey wrote:
>
>
>
> On Feb 17, 3:30 pm, Christian Vest Hansen
> Please don't create issues without getting a nod from me here first.
Ok. I won't. I must have overlooked the "Similarly, please confirm a
bug before making an entry." part.
>
> These are bu
Using clojure 1287, compiling clojure.contrib.repl-ln gives an error:
user=> (compile 'clojure.contrib.repl-ln)
java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to
[Ljava.lang.String; (repl_ln.clj:15)
user=> (st)
[...]
Caused by: java.lang.ClassCastExc
On Feb 17, 2009, at 5:12 PM, Stephen C. Gilardi wrote:
This line looks important:
at clojure.core$generate_class__5435.invoke(genclass.clj:219)
Turning on nil punning debugging with:
cd clojure
ant -Dclojure.assert-if-lazy-seq=true
and testing with:
Usual symbol:
'abc => abc
(symbol? 'abc) => true
(symbol "abc") => abc
(symbol? (symbol "abc")) => true
Special "symbol":
'nil => nil
(symbol? 'nil) => false
(symbol "nil") => nil
(symbol? (symbol "nil")) => true
(= 'nil (symbol "nil")) => false
(= 'nil nil) => true
We can see that (symbol "nil
On Feb 17, 2009, at 5:48 PM, Frantisek Sodomka wrote:
Is this consistent and correct behavior? If it is correct,
page http://clojure.org/Reader could tell more about 'nil, 'false and
'true.
It is correct. nil, true, and false are literals--they evaluate to
themselves. They are a bit special
I don't understand your example:
> user=> (class {1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9})
> clojure.lang.PersistentHashMap
> user=> (class {1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8})
> clojure.lang.PersistentArrayMap
What governs which class {} will return? The number of arguments?
--~--~-~--~
On Feb 17, 2009, at 6:24 PM, Timothy Pratley wrote:
What governs which class {} will return? The number of arguments?
Yes. The current implementation of Clojure's literal map reader
returns a PersistentArrayMap if there are 8 entries or fewer and a
PersistentHashMap otherwise.
--Steve
Thanks Steve,
> returns a PersistentArrayMap if there are 8 entries or fewer and a
> PersistentHashMap otherwise.
Ah that makes sense. Thanks for the explination.
"The two (swap! a inc) forms are added to the map at read-time -
which
is before they are evaluated."
What's the reason for this?
On Feb 17, 8:23 am, Rayne wrote:
> A week or 2 ago, Lau_Of_DK asked me very nicely to stop talking so off-
> topic in #Clojure. I mentioned that we should have an Off-topic
> channel for people who would just like to talk, because just about
> every other language's channel on freenode has an o
Empty lazy seqs do not always compare as equal:
user=> (= (map inc nil) ())
false
The problem is in IPersistentCollection equiv:
user=> (.equiv (map inc nil) ())
false
--Chouser
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On Tue, Feb 17, 2009 at 8:37 PM, Chouser wrote:
> Empty lazy seqs do not always compare as equal:
>
> user=> (= (map inc nil) ())
> false
The problem appears to be when the first seq being compared is empty
but not identical to the second collection. The attached patch fixes
this and is I think
On Tue, Feb 17, 2009 at 5:33 PM, Stephen C. Gilardi wrote:
>
> Turning on nil punning debugging with:
>
>cd clojure
>ant -Dclojure.assert-if-lazy-seq=true
>
> and testing with:
>
>user=> (compile 'clojure.contrib.repl-ln)
>
> suggests that genclass.clj could use some lazy l
Hi,
I read a few messages on the new version.
Could someone summarize the changes and the motivation
behind?
Thanks,
sun
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On Tue, Feb 17, 2009 at 8:54 PM, wubbie wrote:
>
> Hi,
>
> I read a few messages on the new version.
> Could someone summarize the changes and the motivation
> behind?
>
> Thanks,
> sun
>
> >
>
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On Tue, Feb 17, 2009 at 8:56 PM, Jeffrey Straszheim
wrote:
> http://clojure.org/lazy
Also: http://blog.n01se.net/?p=39
I know, I'm shameless.
--Chouser
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Not shameless ... you took the time to write it. It is on-topic. It should
be shared. :)
On Tue, Feb 17, 2009 at 9:04 PM, Chouser wrote:
>
> On Tue, Feb 17, 2009 at 8:56 PM, Jeffrey Straszheim
> wrote:
> > http://clojure.org/lazy
>
> Also: http://blog.n01se.net/?p=39
>
> I know, I'm shameless.
Oh wow, this is perfect. Thanks.
On Feb 17, 2:21 pm, James Reeves wrote:
> (ns html-table
> (:use clojure.contrib.prxml)
> (:use clojure.contrib.seq-utils))
>
> (defn print-table [grid selected]
> (prxml
> [:table {:cellpadding 30, :bgcolor "#aa"}
> (for [[x row] (indexed gr
On Feb 17, 8:48 pm, Chouser wrote:
> On Tue, Feb 17, 2009 at 8:37 PM, Chouser wrote:
> > Empty lazy seqs do not always compare as equal:
>
> > user=> (= (map inc nil) ())
> > false
>
> The problem appears to be when the first seq being compared is empty
> but not identical to the second collec
On Tue, Feb 17, 2009 at 10:03 AM, Craig Andera wrote:
>
>> I'm up for suggestions on the name. The obvious ones:
>>
>> - Clojure.net
>> - ClojureCLR
>> - IronClojure (paralleling IronPython/IronRuby, unless MS has Iron
>> trademarked.)
>> - CLjR (too cute)
>>
>> Perhaps Rich will have a pre
On Feb 17, 8:52 pm, Chouser wrote:
> On Tue, Feb 17, 2009 at 5:33 PM, Stephen C. Gilardi wrote:
>
>
>
> > Turning on nil punning debugging with:
>
> >cd clojure
> >ant -Dclojure.assert-if-lazy-seq=true
>
> > and testing with:
>
> >user=> (compile 'clojure.contrib.repl-l
On Feb 17, 4:16 pm, Frantisek Sodomka wrote:
> That was fast! ;-)
>
> Rich, I am porting test_clojure and old 'cycle' worked as:
> (cycle []) => nil
>
> Currently:
> (cycle []) => java.lang.StackOverflowError
>
Fixed in svn 1290 - thanks for the report.
Rich
--~--~-~--~~-
On Tue, Feb 17, 2009 at 3:47 PM, Chouser wrote:
> On Tue, Feb 17, 2009 at 2:43 PM, Rich Hickey wrote:
>>
>> Please do not rush to this version unless you are a library/tool
>> developer. Let them do their ports and chime in on their progress.
>> Move only when the libs/tools you depend upon have
Since there is no canonical empty sequence, this makes me wonder
whether one particular empty sequence might have some kind of
performance benefit over another.
For example, if I were going to give a name to one empty sequence to
reuse within my code, would one of these be preferable?:
(def empty
My thanks to Rich for the suggestion to go public and for agreeing to
include this as part of the Clojure community.
Thanks to all for the encouragement.
-- David
On Feb 17, 2:55 pm, Rich Hickey wrote:
>
> The whole point of including David's work in contrib is to give people
> confidence tha
On Feb 17, 2009, at 5:10 AM, Chouser wrote:
>
>> I think that the strict usage is consistent with Clojure's
>> "binding" macro,
>> which binds a name to a new variable.
>
> Are you sure? It seems to me the most natural mapping from the CL
> concepts to Clojure is:
> CL name -> Clojure symbo
On Tue, Feb 17, 2009 at 11:48 PM, David Sletten wrote:
>
> ; Clojure. We can access the reference itself via "var".
> (def pung 8)
> (def foo pung) ; i.e., (deref (var pung)) or @#'pung
> (def bar (var pung))
>
> ; "binding" changes value of "pung"--apparently not the variable
> itself, thus
> ;
Okay, thanks for the reply Jason.
I'll just have to make do with JSwat for now it seems.
On Feb 17, 12:50 am, Jason Wolfe wrote:
> I'm sure SLIME has similar features (I've used them with SBCL) but I
> haven't managed to get them to work with Clojure yet -- my suspicion
> is that they're not imp
Hi,
I'm wondering if there's a terser more idiomatic way to write the
following. I want to get a new vector with the specified indexes
removed. I found myself doing this often enough to warrant writing my
own function for this but I would be much happier if there's some
terse way of expressing thi
Is using subvec for something like this a bad idea?
On Wed, Feb 18, 2009 at 12:38 AM, CuppoJava wrote:
>
> Hi,
> I'm wondering if there's a terser more idiomatic way to write the
> following. I want to get a new vector with the specified indexes
> removed. I found myself doing this often enough t
Mmm, subvec doesn't quite seem to do the same thing.
I want a function that removes certain indexes of a vector:
eg. (remove_at [1 2 3 4 5 6] 0 3) => [2 3 5 6]
--~--~-~--~~~---~--~~
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"Clojure
Hi,
I've noticed that I'm creating a lot of maps of functions, and I'm
wondering if there's a performance penalty for this.
ie.
(defn create_fn []
(fn [] (println "hi")))
((create_fn)) <--- Does this "create" a new function every-time it's
called? Or is the function code cached somewhere? Ho
new MBP 2.53ghz
(defn create-fn []
(fn [] (println "hi")))
(time (dotimes [x 4000]
(create-fn)))
> "Elapsed time: 1034.409 msecs"
Hopefully you don't need 40,000,000 functions in less than a second ;)
On Wed, Feb 18, 2009 at 1:16 AM, CuppoJava wrote:
> (defn create_fn []
> (fn [] (
My point was that you could use subvec to do vector splicing and build your
remove function off of that. I'm sure the more experienced Clojurians can
chime in on what is the most idiomatic form.
On Wed, Feb 18, 2009 at 1:10 AM, CuppoJava wrote:
>
> Mmm, subvec doesn't quite seem to do the same t
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