On Sunday, December 16, 2012 9:57:26 PM UTC+2, Jonathan Fischer Friberg
wrote:
I don't know why it doesn't work. However, changing defgreeter to the
following seems work.
(defmacro defgreeter [greeter-name]
(let [greeter (make-greeter)]
`(def ~greeter-name ~greeter)))
Might be
I think, however, that there is a risk of a disconnect, where newcomers
don't really grasp that there is a JVM running and that code is actually
compiled and injected into it, and that it's for real. They are used to
mickey mouse interactive tools that don't provide the real thing, and
Your macro:
*(*~greeter user-name#*)*
*
*
Is producing a list of a function or closure followed by a symbol. The
first element of the list your macro builds must instead be an expression
that can be evaluated to a function. (For example a symbol naming a
function or an (fn [] ...)
On Monday, 17 December 2012 00:23:08 UTC+5:30, puzzler wrote:
On Sun, Dec 16, 2012 at 10:06 AM, Armando Blancas
abm2...@gmail.comjavascript:
wrote:
I'm not going out of my way to be pseudonymous, it just seems to be a
feature of the group.
I thought, Mark asking how to run a
On Monday, December 17, 2012 9:28:20 AM UTC+1, bsmith.occs wrote:
Your macro:
*(*~greeter user-name#*)*
*
*
Is producing a list of a function or closure followed by a symbol. The
first element of the list your macro builds must instead be an expression
that can be evaluated
Function values can't be read by the reader. I'm not sure how any versions
of this code work.
On Mon, Dec 17, 2012 at 12:32 AM, Marko Topolnik
marko.topol...@gmail.comwrote:
On Monday, December 17, 2012 9:28:20 AM UTC+1, bsmith.occs wrote:
Your macro:
*(*~greeter user-name#*)*
*
Hi,
I expect the cost of calling `identity` to be negligible. Not for sure, but
the JVM might even inline it at run-time, or there might be optimizations
for it in clojure.core during compilation... I cannot comment on that. But
even with a full virtual call, it should be faster than iterating
Have you considered using the doto macro in order to avoid having to repeat
the component as the first argument of all the setters?
(let [btn (Button.)]
(.setLayoutX btn 100)
(.setLayoutY btn 150)
(.setText btn Hello World!))
becomes:
(doto (Button.)
(.setLayoutX 100)
(.setLayoutY
On 16 December 2012 10:59, Peter West peter.b.w...@gmail.com wrote:
This effect is, on the face of it, unpredictable: you just have to know that
that is what apply does. Users of clojure learn that pretty quickly. I've
just learned it. Doc doesn't help.
user= (doc apply)
If you're using
Hi everybody,
Happy to announce that Israel has its first Clojure user group.
http://www.meetup.com/Clojure-Israel/
Sincerely,
Daniel Szmulewicz
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Also note that I wrote in my first post that Without the value-mapper
argument it is very awkward to achieve the same structure after the
group-by call. The `map-vals` function is almost the closest you can get
to map values after a group-by in a streamlined and clean manner. There is `
Thanks. That's much better.
On Monday, December 17, 2012 8:53:22 PM UTC+10, Dick Davies wrote:
If you're using leiningen (2 at least, maybe 1?) then a
(user/clojuredocs apply)
is a much better how do I drive this thing? than a straight (doc ...)
call.
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Hi,
I have come across use cases in the past where an additional transformation
step was indeed very handy and I wrote my own version of group-by, one
identical to Daniel's.
Maybe a function worthwhile for c.c.incubator.
Las
2012/12/17 Daniel Dinnyes dinny...@gmail.com
Also note that I wrote
Hello, everyone.
I'm currently trying to model an automata using multi-method. So in my
code, I have something like:
(defmethod trans :state
[state]
; ...
(trans ..
In the last line, the trans will be called with some different state.
However, it seems that such call
What about recur http://clojure.org/special_forms#recur?
It's a special form used for tail call optimizations.
Juan
On Monday, December 17, 2012 1:32:31 PM UTC-3, bruce li wrote:
Hello, everyone.
I'm currently trying to model an automata using multi-method. So in my
code, I have
recur doesn't work well with multimethods:
(defmulti foo identity)
(defmethod foo 1 [n]
(recur (dec n)))
(defmethod foo 0 [n]
:ok)
(foo 1) ;; runs forever
Jonas
On Monday, December 17, 2012 6:56:34 PM UTC+2, juan.facorro wrote:
What about recur
You're right, it fails when the call to recur should dispatch to another
method.
But as long as you are calling the same implementation it does seem to work:
*(ns multi-recur)*
*
*
*(defmulti tail-call #(first %))*
*
*
*(defmethod tail-call :recur [x n]*
* (if (zero? n)*
*(println x Made
On Mon, Dec 17, 2012 at 11:08 AM, Alex Baranosky
alexander.barano...@gmail.com wrote:
Function values can't be read by the reader. I'm not sure how any
versions of this code work.
It is true that a function value can not be printed and then read back in,
but I don't think that's relevant
`recur` throws control flow to the nearest `loop` head or fn body, and each
method is itself a function, so `recur` within a method body will simply jump
to the start of the method, _not_ tail-call the multimethod. e.g.:
= (defmulti foo type)
#'user/foo
= (defmethod foo Long
[x]
On Mon, Dec 17, 2012 at 9:32 AM, Chas Emerick c...@cemerick.com wrote:
What you're trying to do is really a special case of mutual recursion:
because Clojure's methods are separate functions, calling back through the
multimethod (and its dispatch fn) will always consume stack space. The
On Dec 17, 2012, at 12:39 PM, Ben Wolfson wrote:
On Mon, Dec 17, 2012 at 9:32 AM, Chas Emerick c...@cemerick.com wrote:
What you're trying to do is really a special case of mutual recursion:
because Clojure's methods are separate functions, calling back through the
multimethod (and its
On Mon, Dec 17, 2012 at 11:08 AM, Alex Baranosky
alexander...@gmail.comjavascript:
wrote:
Function values can't be read by the reader. I'm not sure how any
versions of this code work.
It is true that a function value can not be printed and then read back in,
but I don't think that's
Hi Thomas,
I'm from Luxembourg. If the meetup isn't too far away from the border, I
would be interested.
Sébastien
2012/12/16 Thomas Goossens cont...@thomasgoossens.be
If you are from Belgium, Don't get too excited - yet - .
I've been wondering about organising a small meetup somewhere
Aaron,
tools.logging and nrepl are important. I'm glad to see the effort.
I haven't forgotten about your single-DLL work.
I'm going to have plenty of time next week if you can get something to me.
-David
On Saturday, December 15, 2012 5:15:16 PM UTC-6, Aaron wrote:
Cool. I'm just seeing
I think it sounds like a nice addition, after mulling it over a little.
On Mon, Dec 17, 2012 at 4:47 AM, László Török ltoro...@gmail.com wrote:
Hi,
I have come across use cases in the past where an additional
transformation step was indeed very handy and I wrote my own version of
group-by,
Shantanu,
I don't have a Linux box available at this point to test, but I'll try it
on Mac w/ Mono when I get a chance.
I don't have a clue how a field disappears between platforms.
-David
On Saturday, December 15, 2012 10:15:21 PM UTC-6, Shantanu Kumar wrote:
Hi,
I noticed the following
I have joined the Amsterdam Clojurians before, but live in Vroenhoven now
(near Maastricht, relatively close to Liége). Maybe a meetup around here
would be something? :)
2012/12/17 Sébastien Wagener sebastien.wage...@gmail.com
Hi Thomas,
I'm from Luxembourg. If the meetup isn't too far away
Ok, sounds good. I can do that. I have 2-3 pretty specific changes that I
can outline. I also have one bug fix (support for IntPtr and UIntPtr in
HostExpr). Should I maybe start a separate thread in this group describing
the proposed changes or should we do this via JIRA or github? I'm not
Another possibility is the macro memfn. From the documentation:
http://clojure.github.com/clojure/clojure.core-api.html#clojure.core/memfn
Regards,
Greg
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Another possibility is the macro memfn. From the documentation:
http://clojure.github.com/clojure/clojure.core-api.html#clojure.core/memfn
Regards,
Greg
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1. install Leiningen and learn the basics
2. get everyone an editing environment, with the option of using either
Emacs, IntelliJ, or Eclipse
I would have people do this in advance, or provide a canned environment
that has a better chance of just working. There's decent odds that these
two steps
I'm currently doing something like src/project/passwords.clj and git
ignoring that, does anyone have a better solution? maybe a way to place the
passwords.clj alongside project.clj in the root directory? Would this be
possible through leiningen profiles?
Thanks
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Hi there,
I'm inquiring regarding the clojure-contrib migration process. I'd like to
offer to step up and maintain clojure-contrib.graph, mainly starting with
converting the defstructs over to defrecords so I can start playing around
in ClojureScript with this library. What's the process
When using nrepl in emacs (cdoc fn) emits:
CompilerException java.lang.RuntimeException: Unable to resolve symbol:
cdoc in this context, compiling:(NO_SOURCE_PATH:1)
However, in lein repl I see:
Loading clojuredocs-client...
How do I make nrepl as smart as lein repl?
On Fri, Dec 14, 2012 at
Hi Stuart,
Re: tools.namespace, I've found some similar functions in the bultitude
library (https://github.com/Raynes/bultitude/tree/master/src/bultitude).
Apparently it addresses
specific needs that clojure.tools.namespace did not provide.
Is one of these recommended over the other, or is
user= *ns*
#Namespace user
user= (def user-ns *ns*)
#'user/user-ns
user= user-ns
#Namespace user
user= (in-ns user-ns)
ClassCastException clojure.lang.Namespace cannot be cast to
clojure.lang.Symbol clojure.lang.RT$1.invoke (RT.java:226)
It appears I'm not understanding how namespaces are
Try (in-ns 'user-ns)
Las
On Dec 18, 2012 7:50 AM, Alan Shaw noden...@gmail.com wrote:
user= *ns*
#Namespace user
user= (def user-ns *ns*)
#'user/user-ns
user= user-ns
#Namespace user
user= (in-ns user-ns)
ClassCastException clojure.lang.Namespace cannot be cast to
clojure.lang.Symbol
Ah no, that puts me in a new user-ns namespace! Not what I wanted!
On Mon, Dec 17, 2012 at 10:51 PM, László Török ltoro...@gmail.com wrote:
Try (in-ns 'user-ns)
Las
On Dec 18, 2012 7:50 AM, Alan Shaw noden...@gmail.com wrote:
user= *ns*
#Namespace user
user= (def user-ns *ns*)
If you want it to remain a Clojure contrib library with a clojure.* namespace,
you'll need to sign a Clojure CA to be able to make contributions to it.
http://clojure.org/contributing
If you want to make it a project on Github or somewhere else, you would
probably need to keep the existing
ah, sorry, it's a bit early for me
(in-ns (ns-name user-ns))
if you could post a simple example for the second part of your question I
maybe able to help.
Las
Alan Shaw 2012. december 18., kedd napon a következőt írta:
Ah no, that puts me in a new user-ns namespace! Not what I wanted!
On
Thanks, Las!
Ok say I have a file in which there is string such as
(- (atan (bw-noise 902 2 0.7604615575402431 400 400))
(read-image-from-file \images/Dawn_on_Callipygea.png\))
and another
version-0-0-1
and I have a namespace version-0-0-1 into which functions named atan etc.
are all
Alan,
Something like this might work for you -
(defmacro eval-in
Eval a Clojure form in a different namespace and switch back to
current namespace.
Args:
code - Clojure form as string
ns - Target namespace as string
[code ns]
`(do
(in-ns '~(symbol ns))
(let [ret# (eval
Thanks BG, I'm trying that.
But I don't think it addresses how to get from the string version-0-1-1
to the namespace something.something.version-0-1-1. How can I do that?
-A
On Mon, Dec 17, 2012 at 11:26 PM, Baishampayan Ghose b.gh...@gmail.comwrote:
Alan,
Something like this might work
Alan,
What you're asking for is to derive the ns clojure.core given only
core. Not sure if that's possible.
The namespace constitutes the whole dotted structure and not just the
last component, I am afraid.
If the actual ns is something.something.version-0-1-1, then you need
the string
Oh yes, the something.something is fixed so I can just prepend it, thanks.
(Hadn't noticed your macro takes the ns as a string!)
-A
On Mon, Dec 17, 2012 at 11:47 PM, Baishampayan Ghose b.gh...@gmail.comwrote:
Alan,
What you're asking for is to derive the ns clojure.core given only
core.
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