Il 26 marzo 2012 16:33, Marco Dalla Stella m.dallaste...@gmail.com ha scritto:
Hi,
We would like to use the Clojure logo for our new Italian Clojure User Group.
Thank you all for your kind answer.
We are not going to use any logo until Rich will give us his permission.
It will be great if
On Mar 22, 10:18 pm, Andy Fingerhut andy.finger...@gmail.com wrote:
If anyone has suggestions for what you would like to see added to the
cheatsheet, especially _specific_ suggestions, feel free to send me email.
I was just looking at the clojure.org cheatsheet today and noticed
that it
Since you want to use the plain defn, what about thinking in a different
way ?
Write a macro like `with-function-name`, wraps the function call instead
of the function definition.
(defmacro with-function-name [fn-name args]
...)
In clojure, because you can assign function to a var at any
On Mar 28, 10:16 am, Elango Cheran elango.che...@gmail.com wrote:
Hi everyone,
On Gregg's suggestion, I want to share a writeup about how total beginners
can learn Clojure in a minimally painful way. I'd welcome any comments,
suggestions, etc.
You could add a link to this guide,
The obvious way is like the following, which traverse the sequence 2 times.
Wondering what will be the efficient way...
(defn avg [coll]
(/ (reduce + coll) (count coll)))
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tl;dr
Is anyone working on a Clojure-Specific Emacs Environment? If considered
but dismissed, then why?
I've just reviewed a thread about nREPL. The thread also (somewhat
indirectly) calls into question the current practice of piggy-backing on
SLIME:
About a networked REPL...
or to increase a counter while reducing it, a function like inc+ returning
{:sum sum :count count} and then take the sum/counter, which is the mean.
The problem is possible to state as a clean map-reduce problem with only
one traversing of the data. It's also possible to remove items form the
user= (nth (subvec [:??? 1 2] 1) -1)
:???
This could be a bug, not sure.
Only the upper bound of the internal SubVec is being checked.
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The obvious way is like the following, which traverse the sequence 2 times.
Wondering what will be the efficient way...
(defn avg [coll]
(loop [c coll tot 0 cnt 0]
(if (empty? c)
(/ tot cnt)
(recur (rest c) (+ tot (first c)) (inc cnt)
This will loop only once.
It happens
You can reduce in one pass with a function that tracks both the sum
and the count.
(defn avg [coll]
(apply / (reduce (fn [[sum n] x] [(+ sum x) (inc n)]) [0 0] coll)))
This reduce function is somewhat unusual in that its arguments have
different forms. As a result, this one does require the
It wasn't very complicated, I just started from zero experience worrying about
this stuff.
- switch map to loop+recur
- add primitive type hints to args and return values
- make sure you get the types right (e.g. make sure your longs are longs, not
ints)
Cheers, Jay
On Mar 28, 2012, at 10:17
JPPF is a Java framework to perform distributed execution of computation
jobs.
In my experiment to use JPPF (http://www.jppf.org) in Clojure I noticed a
class loading problem.
A JPPFTask implemenation created via 'proxy could not be loaded by the JPPF
framework.
As a result I got the following
On Thu, Mar 29, 2012 at 5:15 AM, stirfoo stir...@gmail.com wrote:
user= (nth (subvec [:??? 1 2] 1) -1)
:???
This could be a bug, not sure.
Only the upper bound of the internal SubVec is being checked.
Hmm. This also raises the specter of
(let [a
On Wed, Mar 28, 2012 at 11:48 PM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
If you control the third line of:
(defn foo [x y]
(let [z (bar y (next x))]
(println Done in (find-name) .)
(* 4 z (count x
then don't you control the first?
Cedric – Unfortunately, no. The
Thanks for the catch. Bug report with patch created:
http://dev.clojure.org/jira/browse/CLJ-962
Andy
On Mar 29, 2012, at 2:15 AM, stirfoo wrote:
user= (nth (subvec [:??? 1 2] 1) -1)
:???
This could be a bug, not sure.
Only the upper bound of the internal SubVec is being checked.
On Mar 29, 5:50 pm, Cedric Greevey cgree...@gmail.com wrote:
On Wed, Mar 28, 2012 at 11:48 PM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
If you control the third line of:
(defn foo [x y]
(let [z (bar y (next x))]
(println Done in (find-name) .)
(* 4 z (count x
I am pondering on the idea of having more (or even a lot) of metadata
that could be useful for debugging and problem resolution.
Since we can store anything in metadata, can we store not only source
file path and line number but whole source code that is associated
with piece of code?
For
On Thu, Mar 29, 2012 at 9:29 AM, Petr Gladkikh petrg...@gmail.com wrote:
I am pondering on the idea of having more (or even a lot) of metadata
that could be useful for debugging and problem resolution.
Since we can store anything in metadata, can we store not only source
file path and line
On Thu, Mar 29, 2012 at 12:48 AM, ian.tegebo ian.teg...@gmail.com wrote:
Is anyone working on a Clojure-Specific Emacs Environment? If considered
but dismissed, then why?
The problem is that swank-clojure+slime offers a local maximum. While
there are difficulties working with CL and Clojure at
First of all, one only has to police unauthorized use of the
trademark. One can authorize its use under particular circumstances,
and then those uses don't need to be policed to avoid losing the
trademark.
That's at the heart of trademark law. A trademark is a form of Proof of
origin. If
Please let's not get into a discussion of Copyright or Trademark law.
As far as I know the Clojure logo is not currently trademarked.
Rich's request is that people not use the logo for purposes other than to
represent the Clojure language.
-S
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Thank you all!
谢谢！
2012/3/25 dennis zhuang killme2...@gmail.com
Another link http://cnlojure.org/open.html
2012/3/24 Rostislav Svoboda rostislav.svob...@gmail.com
A nice list of tools and libraries I stumbled upon. Enjoy!
http://www.clojure-toolbox.com/
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I'm hoping to start learning Clojure (via The Joy Of Clojure book), but I'm
having trouble downloading Clojure 1.3 from the
http://clojure.org/downloads site. It downloads maybe 50 or 100 MB very
slowly, then grinds to a halt saying the download was interrupted (on
Google Chrome browser).
There must be something strange going on. The Clojure 1.3 ZIP file is only
4.5 MB.
The Clojure distribution is published through the public Maven repository
system, which has many mirrors:
http://docs.codehaus.org/display/MAVENUSER/Mirrors+Repositories
For example, here's one mirror of Clojure
As far as I know the Clojure logo is not currently trademarked.
You can have a trademark without registering anything (registration is
somewhere between $200 and $300 in the US, I forgot the exact amount), it's
just harder to demonstrate without a registration than copyright.
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On Thu, Mar 29, 2012 at 12:18 AM, simon.T simon.j@gmail.com wrote:
The obvious way is like the following, which traverse the sequence 2 times.
...
The obvious way does not necessarily traverse the sequence twice. If
a sequence S satisfies the 'counted?' predicate, (count S) takes
constant
On Thu, Mar 29, 2012 at 11:35 AM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
On Mar 29, 5:50 pm, Cedric Greevey cgree...@gmail.com wrote:
On Wed, Mar 28, 2012 at 11:48 PM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
If you control the third line of:
(defn foo [x y]
(let [z
On Thu, Mar 29, 2012 at 1:07 PM, Daniel Gagnon redalas...@gmail.com wrote:
First of all, one only has to police unauthorized use of the
trademark. One can authorize its use under particular circumstances,
and then those uses don't need to be policed to avoid losing the
trademark.
That's at
On Thu, Mar 29, 2012 at 1:10 PM, Stuart Sierra
the.stuart.sie...@gmail.com wrote:
Rich's request is that people not use the logo for purposes other than to
represent the Clojure language.
How does he define represent the Clojure language? Just that its
use, in a particular instance, is to refer
Hi guys. First off, love Clojure and it has been a hobby of mine for
several years. When first learning Clojure, one thing I didn't like,
was the ability to actually change a Var at any point in time. Either
through several def/defn's pointing to the same namespace/symbol or by
something like
81 (defn foo [...]
82 (let [x (compute-something ...)]
83 (do-something x ...)
84 (calculate-whatever ...)))
and you're able to edit lines 82, 83, and 84 but not line 81 (or
whatever). But I can't see any plausible circumstance where that would
be the case.
That's exactly
On Thu, Mar 29, 2012 at 2:36 PM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
81 (defn foo [...]
82 (let [x (compute-something ...)]
83 (do-something x ...)
84 (calculate-whatever ...)))
and you're able to edit lines 82, 83, and 84 but not line 81 (or
whatever). But I can't
On Thu, Mar 29, 2012 at 6:41 AM, Chris Webster cmhwebs...@gmail.com wrote:
Is there an alternative/mirror site for downloading Clojure, or do I just
have to wait until the main site is working again?
You might want to start with Leiningen since that will hide all of the
classpath / dependency
2012/3/29 Alf Kristian Støyle alf.krist...@gmail.com:
So, long story short, why are namespaces in Clojure mutable? What is
the rationale behind this?
It's for REPL development. Everytime you redefine a function, its Var
needs to be updated.
OTOH, redefining a var during the normal course of
Hi all,
I'm sure I'm missing a really simple way of doing this!
Given a sequence like this: [1 2 1 2 1 1 2 1 2 2 2]
partition it to get this: [(1 2) (1 2) (1) (1 2) (1 2) (2) (2)]
I've been trying to write something generic like partition-by because the
values are maps. Also I want to be able
On Thu, Mar 29, 2012 at 4:18 PM, David Jagoe davidja...@gmail.com wrote:
Hi all,
I'm sure I'm missing a really simple way of doing this!
Given a sequence like this: [1 2 1 2 1 1 2 1 2 2 2]
partition it to get this: [(1 2) (1 2) (1) (1 2) (1 2) (2) (2)]
I've been trying to write something
Considering what I've seen of other lisp logos, I'd 'polly want to see a
preview.
It's Lisp, the 3 -rlt entiti cassius ~/dev/null
On Wednesday, March 28, 2012, Dimitrios wrote:
On 28/03/12 13:12, Stuart Sierra wrote:
Rich Hickey holds the copyright on the Clojure logo design, and it's not
Yeah I don't like that either. Consider (comp vals (partial group-by
identity)).
On 2012-03-29 16:18 , David Jagoe davidja...@gmail.com wrote:
Hi all,
I'm sure I'm missing a really simple way of doing this!
Given a sequence like this: [1 2 1 2 1 1 2 1 2 2 2]
partition it to get this: [(1 2) (1
On Mar 29, 10:18 am, David Cabana drcab...@gmail.com wrote:
On Thu, Mar 29, 2012 at 12:18 AM, simon.T simon.j@gmail.com wrote:
The obvious way is like the following, which traverse the sequence 2 times.
...
The obvious way does not necessarily traverse the sequence twice. If
a
Meh. Half-assed (mis)reading. Sorry. -Martin
On 2012-03-29 16:23 , Weber, Martin S martin.we...@nist.gov wrote:
Yeah I don't like that either. Consider (comp vals (partial group-by
identity)).
On 2012-03-29 16:18 , David Jagoe davidja...@gmail.com wrote:
Hi all,
I'm sure I'm missing a really
Thanks to Laszlo Török, ClojureScript now has PersistentVectors,
https://github.com/clojure/clojurescript/commit/e615f4cd326e7c608050272c64c4dfaff9a34689
.
They are based on the Java implementations found in Clojure. I'm happy to
say they thoroughly trounce the old copy-on-write Vectors:
Drawbridge is an HTTP/HTTPS nREPL transport, implemented as a Ring handler:
https://github.com/cemerick/drawbridge
It also provides a client-side nREPL transport using clj-http that extends
nREPL's url-connect; the intention is that any tool that uses url-connect will
be able to
This is excellent. Big thanks to Laszlo! I've been working on
a Raphaël-based interactive GUI app in ClojureScript that maintains a big
vector of elements, and had just recently started to run into what seemed
to be the performance limits of the copy-on-write approach. I'm very
optimistic
Very likely strikes me as a huge overstatement here. Most sequences
that you want to average won't be source-code literals, they'll be
lazy sequences, and those aren't counted
Point taken about lazy sequences. But the above was not intended to
suggest the sequence needs to be source code
It has been a great learning experience on both Clojure internals and the
Clojurescript side.
One thing to note, that the handwritten JS (which also a straight port of
the java version and not optimized by the closure compiler) still
outperforms the Clojurescript version consistently by at least a
On 3/29/12 12:33 AM, Marco Dalla Stella wrote:
Il 26 marzo 2012 16:33, Marco Dalla Stella m.dallaste...@gmail.com ha
scritto:
Hi,
We would like to use the Clojure logo for our new Italian Clojure User Group.
Thank you all for your kind answer.
We are not going to use any logo until Rich
Thanks Herwig, makes sense.
Cheers,
Alf
On Mar 29, 2012 1:37 PM, Herwig Hochleitner hhochleit...@gmail.com
wrote:
2012/3/29 Alf Kristian Støyle alf.krist...@gmail.com:
So, long story short, why are namespaces in Clojure mutable? What is
the rationale behind this?
It's for REPL
On Mar 29, 11:46 pm, Cedric Greevey cgree...@gmail.com wrote:
On Thu, Mar 29, 2012 at 2:36 PM, Shantanu Kumar
kumar.shant...@gmail.com wrote:
81 (defn foo [...]
82 (let [x (compute-something ...)]
83 (do-something x ...)
84 (calculate-whatever ...)))
and
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