On Monday, September 24, 2012 3:04:42 AM UTC-7, Mond Ray wrote:
As you can see the REPL gives me an error stating that the keys must be
Integers. Is that right? Or is my call process faulty?
I think the problem is that wish-lists is a vector, so you need a key for
the vector first (e.g.
Clojure is a good language to start.
The only thing is that there are more ressource for beginners in other
languages.
For Racket (another Lisp), you have the very good:
How to design programs.
http://www.ccs.neu.edu/home/matthias/HtDP2e/
(this is the second edition, you might have to peak in
Good day,
There is a function FOO that receives two sequences: say, A and B. There is
an absolute guarantee that sequence B is received from sequence A by
applying next to it N times, e.g. B == (next (next (next... A) | A.
What is the fastest way to return sequence C from the function FOO that
No continuations or coroutines support on the JVM, as far as I know.
However, there are a few monad libraries for clojure with which you
would probably
be able to do what you want. (Using the continuation monad...)
http://www.intensivesystems.net/tutorials/monads_101.html , for example.
I found the following:
(letfn [(foo [a b] (subvec a (count b)))] (foo [1 2 3 4] [1 2]))
but is it the best one?
Good day,
There is a function FOO that receives two sequences: say, A and B. There
is an absolute guarantee that sequence B is received from sequence A by
applying next to it N
Hi :
I would like to create a macro as follows.
Note : the prinln function actually is something more sophisticated,
but I would like to evaluate the composition of one predefined function and
the other from the input argument.
And I got some errors, why?
Thanks
user= (defmacro asdf [
(a) There's no reason for this to be a macro at all: you don't need to
prevent evaluation of anything, and you don't need to transform any
syntax. Just write a function: (defn asdf [ {:keys [a]}] (println
(comp (partial + 1) a)))
(b) To make this a macro, just be more careful about what you
Hi Gregorius,
I recommend for you to watch Brian Will channel on youtube.
http://www.youtube.com/user/briantwill/videos?flow=gridview=1
There are several introduction of programming language: Clojure, Java,
Python, JavaScript, C etc..
After watching all part.1 of each introduction, then you may
There's several different options, best read up on the differences between
these differences in the docstrings:
(remove (set b) a)
(clojure.set/difference (set b) (set a))
(last (clojure.data/diff a b))
On Wednesday, September 26, 2012 10:46:57 AM UTC+2, Alex Shabanov wrote:
Good day,
On Mon, Sep 24, 2012 at 2:11 AM, Gregorius R. gzym...@gmail.com wrote:
Hello Clojurists!
is clojure a good start to learn programming?
It depends what your goal is. If you were planning a long career in
the software development industry, then I think it's a great place to
start. As other's
(defn new-item-ks [wlists wlist-name]
(first
(keep-indexed #(when (= (:name %2) wlist-name)
[%1 :items (count (:items %2))])
wlists)))
(assoc-in wish-lists (new-item-ks wish-lists WL2)
{:name Item 3 :cost 10.0})
On Monday, September 24, 2012
Sweet. I'll try to pull the latest from the git repo.
Cheers
Tim Washington
Interruptsoftware.ca
On Mon, Sep 24, 2012 at 10:49 PM, Hugo Duncan duncan.h...@gmail.com wrote:
Tim,
Timothy Washington twash...@gmail.com writes:
I was following the instructions on the ritz-nrepl
Like others answered, any Lisp is a good start, mainly because the syntax is
terse.
Here, people learn Java or similar first like they were learning Pascal in the
80s
to learn problem analysis.
That's too much luggage to carry, it's more important to learn how to express
the
problem to solve
Having taught Clojure as a first language I'd second Luc's suggestion to avoid
Java interop for as long as possible.
The other thing that I think is crucial is to work in a simple,
beginner-friendly environment (no complicated installation procedures or exotic
UI conventions) that supports a
On 26/09/12 14:04, Lee Spector wrote:
Having taught Clojure as a first language
so, reading the above statement, can I infer that Hampshire college
offers a Clojure course to 1st year undergrads? I'm trying to promote
the same concept for Manchester University (UK) but all the 'important'
Hugo Duncan duncan.h...@gmail.com writes:
sthueb...@googlemail.com (Stefan Hübner) writes:
b) How can ritz-nrepl or (preferably) ritz-swank be embedded in an
application?
I just added instructions [1] to the ritz-swank README. I've not
actually tried this yet, but this is essentially how
On 09/26/2012 08:04 AM, Lee Spector wrote:
Having taught Clojure as a first language I'd second Luc's suggestion to avoid
Java interop for as long as possible.
This is good advice regardless of which alternative JVM language one
chooses. Just cracking the covers on the Java runtime
aaa ok I can see from the website that you're not exactly teaching
Clojure as 1st programming language but rather genetic programming with
Clojure. This certainly makes more sense than what I originally
understood... It just seems impossible to convince academics that 1st
years should become
You're right that my current course using Clojure (genetic programming) isn't a
first programming course, but where I teach we change our courses all the time
and the decisions are made by professors quite freely (after discussion among
related faculty). I've taught Lisp/Scheme as a first
On 9/25/12 11:37 PM, Ben Smith-Mannschott wrote:
On Tue, Sep 25, 2012 at 1:53 AM, James Hess james.hes...@gmail.com wrote:
Hi experienced clojure gurus,
According to VisualVM 24% of my time is spent in
clojure.lang.Keyword.hashCode. I'm sure I am doing something wrong (i.e. I'm
not blaming
## TL;DR
Elastisch is a minimalistic client for ElasticSearch.
It supports virtually every Elastic Search feature and has solid
documentation [1] that covers Elastic Search
and Lucene concepts and terminology as well as the actual library.
After 10 months of work, several alphas, betas and two
On 24.09.2012 13:04, Mond Ray wrote:
user= wish-lists
[{:name WL1, :items [{:name Item 1, :cost 20.0} {:name Item 2,
:cost 40.0}]} {:name WL2, :items [{:name Wiggle 1, :cost 20.0}
{:name Wiggle 2, :cost 40.0} [:name Item 3 :cost 10.0]]}]
user= (assoc-in wish-lists [:name WL1] [:name WL1
On Sep 24, 2012, at 7:13 AM, Manuel Rotter wrote:
Anyway, is there a dedicated mailing list to discuss this book?
See the homepage: http://www.clojurebook.com/
Note that the email list mentioned there is not a discussion list; it's (under)
used for sending out news about the book and
It is never too late to learn something new. If you start with Scheme
then you will find loads of excellent pedagogical material that has
been heavily vetted over the years, and you are bound to find that one
of them will speak to you. The excellent thing about starting is
that you can leverage
Hi,
I'm the author of a DSL that allows reasoning over paths throughout graphs
using core.logic ( https://github.com/ReinoutStevens/damp.qwal ). We
noticed that for larger graphs performance became horribly slow, even
though there is no apparent reason why it should be. First investigations
Hi there,
I am wondering what the best/recommended way to deal with serialization of
unknown types to JSON with clojure.data.json. For things like UUIDs and
SQL Dates, I get errors like this:
java.lang.Exception: Don't know how to write JSON of class java.util.UUID
With Clojure 1.4 is there an
I am also having trouble getting the nrepl-ritz debugger to start. I am
able to start a repl with M-x nrepl-ritz-jack-in. Then when I do M-x
nrepl-ritz-break-on-exception and type '(throw (Exception. OHAI))' into
the repl, what happens is that I see nrepl-dbg-setup 1 in the minibuffer
and the
Hi Greg,
If you want to start with a functional language, then I would start with
Erlang or Haskell, rather than Closure.
Closure is a great language, but it runs on the Java VM, and you are
expected to know and understand Java data structures. I found learning
both Closure and Java
Some of this information exists in the CLJS compiler, although it's not
documented.
For example, the cljs.analyzer namespace has *cljs-ns* and `namespaces`.
You could examine these Vars at the Clojure (not ClojureScript) REPL.
Vars and namespaces do not exist at all in compiled CLJS code, so
http://dev.clojure.org/display/community/Libraries is unorganized and out
of date - volunteers welcome.
James Reeves created http://www.clojure-toolbox.com/
-S
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On 26/09/12 17:10, Ian wrote:
If you want to start with a functional language, then I would start
with Erlang or Haskell, rather than Closure.
Closure is a great language, but it runs on the Java VM, and you are
expected to know and understand Java data structures. I found learning
both
On Thu, Sep 27, 2012 at 12:31 AM, Stuart Sierra the.stuart.sie...@gmail.com
wrote:
http://dev.clojure.org/display/community/Libraries is unorganized and out
of date - volunteers welcome.
I am interested in keeping the clojure libraries up to date. Can you give
me some ideas what are the
you might find this useful:
https://github.com/dakrone/cheshire
you can pretty much swap it in for data.json IIRC and it has nice
support for custom encodings, amongst other things.
On Wed, Sep 26, 2012 at 12:39 PM, Robert Beaupre
codewise.rob...@gmail.com wrote:
Hi there,
I am wondering what
On Wednesday, September 26, 2012 3:05:08 PM UTC-4, Mayank Jain wrote:
I am interested in keeping the clojure libraries up to date. Can you give
me some ideas what are the tasks that needs to be done? So that I have some
idea about it.
1. Send in a signed Clojure Contributor Agreement:
I'm working on a new version of data.json that supports conversions:
https://github.com/clojure/data.json/tree/transform
Feedback welcome on the API.
-S
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@Stuart
Thanks. But it says Send your signed agreement via postal mail to:
Do I need to send it via postal mail? (I stay in India)
On Thu, Sep 27, 2012 at 12:38 AM, Stuart Sierra the.stuart.sie...@gmail.com
wrote:
On Wednesday, September 26, 2012 3:05:08 PM UTC-4, Mayank Jain wrote:
I am
2012/9/26 Mayank Jain firesof...@gmail.com
Thanks. But it says Send your signed agreement via postal mail to:
Do I need to send it via postal mail? (I stay in India)
Unfortunately, yes. Clojure uses a fine crafted 16th century contributor
agreement process that does not
take into account that
2012/9/26 Stuart Sierra the.stuart.sie...@gmail.com
http://dev.clojure.org/display/community/Libraries is unorganized and out
of date - volunteers welcome.
Stuart,
No, that's not how it works. You *first* make contribution process easy,
*then* ask people to volunteer.
Not the other way
On Wed, Sep 26, 2012 at 12:35 PM, Michael Klishin
michael.s.klis...@gmail.com wrote:
Unfortunately, yes. Clojure uses a fine crafted 16th century contributor
agreement process that does not
take into account that there may be potential contributors outside of North
America and western Europe.
On Wed, Sep 26, 2012 at 12:40 PM, Michael Klishin
michael.s.klis...@gmail.com wrote:
No, that's not how it works. You *first* make contribution process easy,
*then* ask people to volunteer.
Michael,
Don't want to sound snarky here, but as we all know, easy != simple :)
Regards,
BG
--
2012/9/26 Baishampayan Ghose b.gh...@gmail.com
IMHO it's not that archaic. There are _many_ FOSS projects which
mandate a CLA of some sort (even the hippest projects like Node.js
have this http://nodejs.org/cla.html). The only contention is the
snail-mailing part, which I understand is
On Wed, Sep 26, 2012 at 12:44 PM, Michael Klishin
michael.s.klis...@gmail.com wrote:
I am only talking about the snail mail part. I have no problem with CAs,
legal aspects of
OSS project governance or anything like that.
It took me a few hours to pass through the Neo4J contributor agreement
If you use something like lein or clooj you can push back most of the Java stuff
for a significant chunk of the learning curve. Using Java libs does not imply
that
you must be well versed in Java. That can come later.
Obviously if you jump into both of them upfront, it will be quite confusing,
On Sunday, September 23, 2012 4:00:28 PM UTC-4, zcaudate wrote:
is there some sort of categorised list/wiki that we can add to for new
libraries?
I've started the [Clojure Dining
Car](http://www.unexpected-vortices.com/clojure/dining-car.html), but
haven't announced it yet because I still
On Wed, Sep 26, 2012 at 3:40 PM, Michael Klishin
michael.s.klis...@gmail.com wrote:
2012/9/26 Stuart Sierra the.stuart.sie...@gmail.com
http://dev.clojure.org/display/community/Libraries is unorganized and out
of date - volunteers welcome.
Stuart,
No, that's not how it works. You *first*
+1
Accepting CAs by mail would be very welcome.
The impact of this until now is something quite difficult to measure, since
potential contributors maybe never voiced their interest and just quit when
they get to know the effort (or cost) required. But it probably makes a
difference when a
zcaudate:
is there some sort of categorised list/wiki that we can add to for new
libraries?
There are clojuresphere.com, clojure-toolbox.com and some groups of people
have their
own sites for their stuff: clojurewerkz.org, http://flatland.org.
If you want to make your library more visible,
I think the consensus is that an electronic way to send the CA is just
the right amount of effort required. You stil have to take the time to
fill out a legally binding agreement but it also doesn't rule out
those for whom snail mail is just too unpractical because they live
outside the US or
2012/9/26 Aaron Cohen aa...@assonance.org
No, only if you want an unfiltered stream of absolutely anyone to
contribute is that true. If you're ok with restricting volunteers to
the subset who are actually willing show a little effort, making the
process slightly cumbersome might even be a net
For what it's worth, I've organically discovered several of Clojurewerkz's
projects just via google search, so I think Michael's methods work,
although there is indeed a fair amount of effort involved in maintaining
the promotion.
I like the https://twitter.com/nodenpm for node.js npm package
On Wednesday, September 26, 2012 3:48:27 PM UTC-4, John Gabriele wrote:
On Sunday, September 23, 2012 4:00:28 PM UTC-4, zcaudate wrote:
is there some sort of categorised list/wiki that we can add to for new
libraries?
I've started the Clojure Dining Car ...
Oh, sorry. You were
While I don't mind sending a document via mail, but saying, Pay 50$ (Approx
2500 Indian Rupees) for Hi, I want to help organize the library
documentation for clojure sounds unreasonable to me.
This maybe valid for US citizens, But you can't ask people who don't stay
in US for such a procedure.
On Wed, Sep 26, 2012 at 8:20 AM, Reinout Stevens reste...@vub.ac.be wrote:
Hi,
I'm the author of a DSL that allows reasoning over paths throughout graphs
using core.logic ( https://github.com/ReinoutStevens/damp.qwal ). We
noticed that for larger graphs performance became horribly slow,
2012/9/27 Wes Freeman freeman@gmail.com
For what it's worth, I've organically discovered several of Clojurewerkz's
projects just via google search, so I think Michael's methods work,
although there is indeed a fair amount of effort involved in maintaining
the promotion.
It's not that
I would go with the book Simply Scheme, Introducing Computer Science by
Harvey and Wright.
Install the Racket system on your computer, and have at it.
http://racket-lang.org/
Once you come up to speed on Scheme, you will have no trouble with core
Clojure.
But if you venture in the the Java
I believe the only question You should be considering - is it interesting
to You? I should say - giving up because of Your age or Your self-esteem of
Yourself is a bad idea. Clojure is complex language - but it doesn't really
matter, the key point - if it's interesting to You and You are ready
All I need is some sort of threads that can handle 1000 simultaneous
threads and 300,000 context switches per second. I don't actually need the
coroutine value-passing feature; they are just one thing that lightweight
threads can be built on top of. Regular OS threads (via java.lang.Thread)
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