Unless I've missed something implicit in your post, why do present us (and
particularly ajay, who's trying to understand the language) what I would
consider an abuse of macro, where regular functions would do the job very
well ?
2009/12/13 mbrodersen
> There is nothing "wrong" about objects in C
Ajay,
It seems to me your questions are totally justified. It's a normal reaction
to try to make links between things you know and things you discover.
Fortunately, the world doesn't expect you to forget everything you've done
in the past in order to try new other things.
Your questions, to be an
And I encourage you to do so: everything that can help bridge the gap
between "Java's way of programming things" and "Clojure's way of programming
things" will be benefitial to everybody.
2009/12/13 Laurent PETIT
> Ajay,
>
> It seems to me your questions are totally justified. It's a normal reac
2009/12/13 rebcabin :
> I got a lot closer thanks to the great hints above; the current state
> is this
>
> C:\usr\local\bin>java -cp clojure-1.0.0.jar;clojure-contrib.jar;j3d-
> core-1.3.1.j
> ar;j3dcore-ogl.dll;vecmath.jar;j3dutils.jar;j3dcore-d3d.dll
> clojure.lang.Repl
By the way, clojure.lang
Thanks for a great idea Andrew!
I was slightly annoyed by the lack of consistency in parameter
ordering of Clojure collections API (cons vs conj, get/assoc vs filter/
map/take).
IMHO the input collection should ALWAYS be the last param. Then simple
->> macro would be sufficient in most cases.
Out o
On Dec 6, 12:40 am, Phil Hagelberg wrote:
> Zach Tellman writes:
> > If that's what it takes, great. Someone just needs to define what a
> > multi-platform JNI package looks like. I'm willing to go along with
> > whatever is decided upon by technomancy et al.
>
> I don't think this is necessaril
It tried the following in REPL and got no error. Personally, I feel that I
should get an error because calling square on strings is wrong in both
cases.
Is there a way out of this in Clojure?
(defn square [n] (* n n))
(if (= 0 0) (println "hello") (map square ["a" "b"]))
The following gives erro
Thanks, I'll fix reported those problems, soon :-)
Thanks!
On 12월13일, 오전7시31분, Rob Wolfe wrote:
> Mike K writes:
> > 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. l
Is it possible to create a macros that knows from what function it was
called and what variables (bindings) are defined in the caller
function?
For example following python code defines function print_env that
prints name of function that called print_env() along with local
variables of those func
Hi,
im just porting Chapter 19 to clojure (my objective is to learn
macros). (For those that do not know the book: A database system is
introduced that can hold and query painters). It goes nicely until the
macro with-answer, which generate bindings on-the-fly so that one can
say
(with-answer (pa
I am a C# developer, writing ASP.NET, Windows Applications, managed
libraries for 7 years by now. And before that I had done some C/C++. I
have never - well; almost never - stepped out of Microsoft world (out
of Visual Studio actually) for any big projects and I am not so fluent
in things like auto
Thanks to all,
Yes, I am going through the book now and learning the rules of the game.
Once I am done with it, I will post on this list, some code (which I will
believe to be the Clojure way of doing things) and ask if that seems to be
the idiomatic way of doing things.
I strongly feel though that
On 13 Dec 2009, at 11:18, Dima Dogadaylo wrote:
> Is it possible to create a macros that knows from what function it was
> called and what variables (bindings) are defined in the caller
> function?
Yes. Look at the recent thread on debug REPLs:
http://groups.google.com/group/clojure/bro
Worked out very quickly but it's headed in the direction you want:
(defmacro dynlet [bvec body]
`(let ~(if (vector? bvec)
bvec
(var-get (resolve bvec)))
~body))
(def bds '[a 42])
(dynlet bds (prn a))
(dynlet [a 42] (prn a))
On Sun, Dec 13, 2009 at 5:43 AM, mk wrot
On 13 dec, 08:12, Raoul Duke wrote:
> hi,
>
> > 2. In my mind, the single most important use of OO is polymorphism.
> > The ability to associate functions with multiple implementations
> > depending on their parameters is very useful since it means you can
> > generalize algorithms without having
The 3 major IDEs all have plugins for clojure (InelliiJ IDEA 9 &
NetBeans 6.8, Eclipse 3.x) and are free. This might be a good
start. There is no "standard" entry point. In the end you will most
likely end up on Emacs/Slime if you turn into a lisp nerd. :) I
recommend NetBeans w/ Enclojure plu
> objects too. They're not mutually exclusive. It's just that doing
> stuff side-effect free pretty much forces you to drop many of the
> classic OO patterns.
seems to me that a lot of it comes down to connotations vs.
denotations; what /is/ OO, anyway? :-)
sincerely.
--
You received this messa
On 13 dec, 19:48, Raoul Duke wrote:
> seems to me that a lot of it comes down to connotations vs.
> denotations;
I really don't know what you mean by that.
> what /is/ OO, anyway? :-)
>From what I've seen, it's the association of function implementations
with a complex type or data structure.
> Of course you don't need OO to do polymorphism, and I'm fairly sure
> that OO doesn't do polymorphism the best way, but in my estimation the
> main reason "classic" OO is so popular is that it provides a very
> concrete way to do polymorphism easily.
At the risk of going off on a bit of a tangen
(1) Is there already a form that does this?
or
(2) If not, how can the following be better/simpler:
(use 'clojure.contrib.with-ns)
(defmacro wall-hack-var
"Return the value of a var in a namespace, even
if it is private. Intended for test automation."
[ns v]
`(with-ns '~ns
(if
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
>> We have talked about adding a run task;
>> if you're interested we could even get it in for the 1.0.0 release.
I'd definitely like to see that. Right now my deployment sequence looks like:
lein compile
lein uberjar
java -jar myapp-standalone.jar
I imagine "lein run" should be able to execute
I'm building clojure-contrib locally from source, and would like to
use the resulting jar file in other projects, which I'm building with
leiningen. To accomplish this, I need to get the clojure-contrib.jar
resulting form the build installed in the correct place in
~/.m2/repository. I've been doing
I wrote this macro a while ago that allows you to do this in a
relatively clean way:
http://paste.lisp.org/display/81703
Example usage:
=> (let-map [a 5 b (+ a 12)])
{:a 5, :b 17}
- Chas
On Dec 9, 2009, at 1:20 PM, bOR_ wrote:
> Hi all,
>
> I want to make a hash-map where the value of one k
I highly recommend you use the snapshots on build.clojure.org. Lein
already has build.clojure.org snapshots in it's repo list. You don't
need to do anything more than put
:dependencies [[org.clojure/clojure "1.1.0-master-SNAPSHOT"]
[org.clojure/clojure-contrib "1.1.0-master-SNAPSHOT"]]
in you
So in my experiments with using clojure / contrib w/ the "new" branch,
I've noticed a pattern of binary incompatibility. Jars pushed to
clojars, maven repos and other places that are are unnecessarily
AOTed, don't work with clojure "new". I noticed the same thing going
from clojure 1.0 to clojure
Thanks to all!
I think I should emphasis on some titles; with help of replies I have
read and learned about some topics.
1 - I understand that open source world is very wide and it is not all
about Java. My question is should I be a good Java developer before
starting programming in Clojure? Or c
Steve,
That's great. I wouldn't have expected it to work. Do you think this
is by design or coincidental/subject to change?
Stu
>
> 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:
>
Hi all,
I recently pulled down the latest Clojure master branch and have noticed
a small change in line-seq's behaviour which breaks some of my code.
The code in question uses line-seq like this:
(use 'clojure.contrib.duck-streams)
(with-open [ss (java.net.ServerSocket. 4141)]
(println (f
ataggart (& sean): Thanks! I over-looked that in my haste to
respond.
lambdatronic: That's a very slick use of "and" in the outer "some!" I
quite like that.
Thanks to all again.
On Dec 11, 5:20 pm, lambdatronic wrote:
> This shaves 7 characters off Sean's solution and short circuits just
> as
On 13 dec, 21:19, Richard Newman wrote:
> At the risk of going off on a bit of a tangent:
>
> My experience with teaching OO to university students (and watching my
> own class learn it) suggests that polymorphism -- at least, as
> presented by C++ and Java -- is the hardest concept for beginn
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
I see usages of the time macro that wrap the expression of interest in a
call to dotimes. Is there any interest in an overload of time that takes an
additional parameter for a number of iterations, evaluates the expression
that many times, and prints the average time in the report?
Usage:
user> (t
On Dec 14, 3:48 pm, Shawn Hoover wrote:
> Is there any interest in an overload of time that takes an
> additional parameter for a number of iterations
Sounds useful to me!
Regards,
Tim.
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to t
On Sun, Dec 13, 2009 at 23:15, dysinger wrote:
> I highly recommend you use the snapshots on build.clojure.org. Lein
> already has build.clojure.org snapshots in it's repo list. You don't
> need to do anything more than put
>
> :dependencies [[org.clojure/clojure "1.1.0-master-SNAPSHOT"]
> [org
On Sun, Dec 13, 2009 at 7:55 PM, Stephen C. Gilardi wrote:
>
> 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.c
On Dec 13, 11:44 pm, dysinger wrote:
> So in my experiments with using clojure / contrib w/ the "new" branch,
> I've noticed a pattern of binary incompatibility. Jars pushed to
> clojars, maven repos and other places that are are unnecessarily
> AOTed, don't work with clojure "new". I noticed th
On Mon, Dec 14, 2009 at 07:26, mac wrote:
> On Dec 13, 11:44 pm, dysinger wrote:
>> So in my experiments with using clojure / contrib w/ the "new" branch,
>> I've noticed a pattern of binary incompatibility. Jars pushed to
>> clojars, maven repos and other places that are are unnecessarily
>> AO
Hi,
I like to suggest the following policy: publish libraries as jarred-
up .clj sources and AOT them locally when building an application.
Leiningen could sure help here and everen cache different compiled
versions dependening on the clojure version.
IIRC this is what Debian does with elisp pack
What about using a function that throws an exception to quit?
The nice thing about using a function to quit is that then you can
return
values.
I've done so here:
http://gist.github.com/255883
In addition I've made it so the debug-repl call can wrap a form. If
you call quit-dr with no paramete
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