Hi,
On 9 Sep., 20:46, Mike Meyer wrote:
> The first problem with that is that this stuff seems show up
> *everywhere* in Javaland. It's not just web apps, it's pretty much
> anything.
You just lost me completely with your argumentation. I wrote a small
desktop utility (simple problem, simple so
Hi,
On 9 Sep., 21:01, Randy Hudson wrote:
> Inexplicably (counted? "abcd") returns false.
Why should it? String does not implement Counted.
Sincerely
Meikel
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Hi,
On 9 Sep., 21:47, Daniel Werner
wrote:
> Could this be a bug?
No. Clojure does not enforce contracts in several places. Feed wrong
things in and get undefined behaviour back. Only the contract is
guaranteed. Everything else is an implementation detail and might
change at any moment.
Sincer
2010/9/10 Meikel Brandmeyer :
> Hi,
>
> On 9 Sep., 20:46, Mike Meyer 620...@mired.org> wrote:
>
>> The first problem with that is that this stuff seems show up
>> *everywhere* in Javaland. It's not just web apps, it's pretty much
>> anything.
>
> You just lost me completely with your argumentation
2010/9/10 Meikel Brandmeyer :
> Hi,
>
> On 9 Sep., 21:01, Randy Hudson wrote:
>
>> Inexplicably (counted? "abcd") returns false.
>
> Why should it? String does not implement Counted.
Maybe when Counted becomes a protocol and is then extended to java.lang.String ?
(Does this make sense ?)
--
Yo
Hi,
On 10 Sep., 10:27, Laurent PETIT wrote:
> while I admit I haven't read *all* the answers to Meikel's question in
> their entirety, what I've understood is that :
>
> * he's not talking about clojure the language, but its ecosystem
> (the JVM host and the J2EE stuff -de facto standard for w
Hi,
On 10 Sep., 10:33, Laurent PETIT wrote:
> Maybe when Counted becomes a protocol and is then extended to
> java.lang.String ?
>
> (Does this make sense ?)
Hmmm... Then you can't implement count for seqs anymore. Given you
want the Counted protocol to provide a O(1) count function (really
na
2010/9/10 Meikel Brandmeyer :
> Hi,
>
> On 10 Sep., 10:27, Laurent PETIT wrote:
>
>> while I admit I haven't read *all* the answers to Meikel's question in
>> their entirety, what I've understood is that :
>>
>> * he's not talking about clojure the language, but its ecosystem
>> (the JVM host an
I'm happy to announce release of http.async.client v0.2.0 an Asynchronous HTTP
Client for Clojure.
This is wrapper/adapter on top of
http://github.com/AsyncHttpClient/async-http-client
Project: http://github.com/neotyk/http.async.client/
Documentation: http://neotyk.github.com/http.async.client
@ Nicolas and ajuc
Thank you very much for showing me where I went wrong! With so many
parentheses it sometimes happens that I misplace one
Now the output of the function is as expected:
(defn prefix->postfix [expr]
(if (coll? expr)
(let [ [op arg1 arg2] expr]
[ (prefix->postfix arg1
2010/9/10 Stefan Rohlfing :
> @ Nicolas and ajuc
>
> Thank you very much for showing me where I went wrong! With so many
> parentheses it sometimes happens that I misplace one
>
> Now the output of the function is as expected:
>
> (defn prefix->postfix [expr]
> (if (coll? expr)
> (let [ [op arg
Hi Laurent,
Thanks for your detailed explanation! It greatly helped me understand
the usage of quoting.
Stefan
On Sep 10, 5:27 pm, Laurent PETIT wrote:
> 2010/9/10 Stefan Rohlfing :
>
>
>
>
>
>
>
>
>
> > @ Nicolas and ajuc
>
> > Thank you very much for showing me where I went wrong! With so man
On Sep 9, 5:06 pm, alux wrote:
> But, @Luc
> "pushing the advantage of Lisp
> macros to the forefront is not obvious if the audience cannot compare
> with another (good/simple) implementation they understand well."
>
> Thats why I want to use a nifty metaphor ;-)
Even your dumbest Java developer
I'm just trying out Clojure a bit, so this may be an obvious simple thing
I'm misunderstanding.
This code in the test file below allows editing a Clojure function that is
updated when an "Update Code" button is pressed, with the new value
connected to a GUI button "Click Me!" as a proxy Action
On Sep 9, 6:06 pm, Phil Hagelberg wrote:
> On Thu, Sep 9, 2010 at 8:38 AM, Mike Meyer
>
> wrote:
> > And two tools - lein and clojure itself.
>
> I'm not sure Clojure should be counted separately since you're not
> installing it yourself.
>
> > So we go from 3, 0, 1 to 6, 4, 2. I'm not sure that
Hello,
I always thought it to be good style to make helper functions only as
visible as needed, e.g. by using letfn.
But when I want to test my code, I just dont see a way to access these
local functions for tests.
(I've seen fogus playing with the test of functions that are namespace
private ht
On 10 September 2010 12:24, alux wrote:
> I always thought it to be good style to make helper functions only as
> visible as needed, e.g. by using letfn.
>
> But when I want to test my code, I just dont see a way to access these
> local functions for tests.
I don't believe you can. You could make
Hi James,
thanks for your answer.
> your tests should be testing your public interface
Hhmmm.
Well, I tend to disagree here. I sometimes like to have tests in place
for things I want to refactor. To not inadvertently do something
foolish.
But I agree that this is not easily accomplishable.
Gre
>From someone who's window to your code is your public API, a
refactoring should make no observable change.
So if you only test on the public API, but you test it thoroughly,
then your tests will ensure that this property holds.
Tests that delve into implementation details and private things, are
On Sep 9, 11:47 am, Mike Meyer wrote:
> On Thu, 9 Sep 2010 16:28:48 +0100
>
> Edmund Jackson wrote:
> > Hi Mike,
>
> > Could you perhaps present a counter-example of greater simplicity ?
>
> $ cat - > /usr/local/www/apache22/cgi-bin/hello-world.sh
> #!/bin/sh
>
> echo 'Content-type: text/pla
Try printing out the *ns* variable in the fn. Chances are your code
is being created in a different *ns* than it is being run. You can
also try using the fully qualified path to get to JOptionPane, that
may help too.
On Sep 9, 9:43 pm, "Paul D. Fernhout"
wrote:
> I'm just trying out Clojure a b
Got it. You cannot invoke (import) (or (ns)) from within the function
definition. The function is already being evaluated, and it's "too
late".
This works fine for me:
(do
(import '(javax.swing JOptionPane))
((fn []
(println "Hello World")
(println (+ 2 2))
(JOptionPane/showMess
I've also used the with-ns package in contrib to fix this.
On Sep 10, 9:03 am, Laurent PETIT wrote:
> Got it. You cannot invoke (import) (or (ns)) from within the function
> definition. The function is already being evaluated, and it's "too
> late".
>
> This works fine for me:
>
> (do
> (import
Just to be contrary ;)
A one time investment of 2 minutes (I did have to scrounge in contrib
to locate these after all):
(defn make-stupid-simple-script [f content]
(spit f content)
(sh "chmod" "755" (.getName f)))
for the eternal pleasure of using:
user=> (make-stupid-simple-script (File.
On Fri, Sep 10, 2010 at 4:47 AM, John Cromartie wrote:
> #!/usr/local/bin/clj
>
> (println "Content-type: text/plain\n")
> (println "Hello, World!")
> ^D
>
> Is that simple enough?
>
That was my thought too, java/clojure console app should not be more
complex than python etc. The issue is the star
I solved my maven corruption problem. On if the m2 index folder was not
cleaned properly.
Luc P,
lprefonta...@softaddicts.ca wrote ..
> Hi Phil,
>
> I upgraded to 1.3.1 but started to experience some problems with
> my our-classe-only hook. I made it return 0 since 1.3.1 expects a numeric
> re
Hi List,
Today, trying to setup Clojure I downloaded 'leiningen.bat' from
(http://github.com/technomancy/leiningen/raw/master/bin/lein.bat) and
'self-install' fails:
C:\Users\Bahman>lein self-install
SYSTEM_WGETRC = c:/progra~1/wget/etc/wgetrc
syswgetrc = C:\Program Files\GnuWin32/etc/wgetr
Finally,
> cat - > /usr/local/www/apache22/cgi-bin/hello-world
>
> #!/usr/local/bin/clj
>
> (println "Content-type: text/plain\n")
> (println "Hello, World!")
> ^D
I can start using Clojure again :)
John
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Adam Burry wrote ..
> On Sep 9, 5:06 pm, alux wrote:
> > But, @Luc
> > "pushing the advantage of Lisp
> > macros to the forefront is not obvious if the audience cannot compare
> > with another (good/simple) implementation they understand well."
> >
> > Thats why I want to use a nifty metaphor ;-)
On Sep 10, 1:32 am, Mike Meyer wrote:
> I think that Java's strength is enterprise-level, highly scalable web
> servers make people assume that every problem must be a nail for that
> hammer.
I think that Unix's strength is small independent programs
communicating over standard I/O makes you as
It seems that when using ring/jetty, *out* is getting eaten or thrown
away. I'm a n00b to clojure and the java world in general, but it
seems odd that (prn something) should silently fail? I'm guessing
that I'm missing some configuration somewhere? Help? :)
--Colin
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On 2010/9/10 19:07, Bahman Movaqar wrote:
> Hi List,
>
> Today, trying to setup Clojure I downloaded 'leiningen.bat' from
> (http://github.com/technomancy/leiningen/raw/master/bin/lein.bat) and
> 'self-install' fails:
> C:\Users\Bahman>lein self-install
> SYSTEM_WGETRC = c:/progra~1/wget/etc/
On 10 September 2010 15:39, Colin Steele wrote:
> It seems that when using ring/jetty, *out* is getting eaten or thrown
> away. I'm a n00b to clojure and the java world in general, but it
> seems odd that (prn something) should silently fail? I'm guessing
> that I'm missing some configuration so
On Sep 9, 10:15 pm, gary ng wrote:
> On Thu, Sep 9, 2010 at 10:04 PM, Isaac Gouy wrote:
> > Is there any point speculating about this as outsiders?
>
> > It was available - Data.HashTable seems to be copyright 2003.
>
> >http://ogi.altocumulus.org/~hallgren/Programatica/tools/pfe.cgi?Data
>
That ought to be correct, but I can't reconcile that with the error
message. Doesn't the "Can't embed object in code, maybe print-dup not
defined" error only appear in macros, when some object being spliced
into a macro's expansion is not a basic Clojure form? Yet, you are
correct, commenting out t
On Sep 10, 1:10 pm, lprefonta...@softaddicts.ca wrote:
> Adam Burry wrote ..
>
> > On Sep 9, 5:06 pm, alux wrote:
> > > But, @Luc
> > > "pushing the advantage of Lisp
> > > macros to the forefront is not obvious if the audience cannot compare
> > > with another (good/simple) implementation they u
Hi everyone,
As a beginner in Clojure, I'm wondering if there is any kind of
Clojure User Group around Geneva ?
(If not, some friends of mine and I are willing to create one.)
Thanks in advance,
__
s t
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You're right about the namespace-qualification: I accidentally
macroexpanded with syntax-quote rather than quote. My mistake; the
actual expansion is the same, but without namespace-qualification.
Using (var ~fn-name) results in the same error, unfortunately. I think
now the attempted embedding of
On Fri, Sep 10, 2010 at 7:37 AM, Bahman Movaqar wrote:
> Also another strange thing is that when I open a command prompt and
> enter 'lein self-install' it fails; I figured out I have to issue a
> dummy 'lein new' first for 'self-install' to start.
> C:\Users\Bahman>lein self-install
> The synta
I'm using emacs starter kit and clojure-test-mode 1.4 installed using
elpa. Running clojure-tests-run-tests seems to work fine, but clojure-
test-run-test seems flakey. This blog post from May says the elpa
version is out of date.
http://otfrom.wordpress.com/2010/05/16/leiningen-clojure-1-2-and
On Fri, Sep 10, 2010 at 1:27 AM, Laurent PETIT wrote:
> These last few months, working on ccw has been particularly
> interesting because I've had feedback from users, especially Lee. Lee
> has challenged a lot of what I had considered to be "simple things" in
> ccw. I can say that when you're in
I've solved the problem. I found that it only occurred when general-
defmaker was called with its forms argument containing another general-
defmaker call with def-form being defmacro. Thus, in the inner general-
defmaker call, the *result* of (NamedRule. (delay …)) was embedded
into a defmacro cal
I've solved the problem. I found that it only occurred when general-
defmaker was called with its forms argument containing another general-
defmaker call with def-form being defmacro. Thus, in the inner general-
defmaker call, the *result* of (NamedRule. (delay …)) was embedded
into a defmacro cal
On Fri, Sep 10, 2010 at 8:49 AM, Isaac Gouy wrote:
>> Huh ? point ? it was just a casual comment, no point was intended. And
>> I have read some comments by Don that what is in the shoutout is way
>> faster than Data.HashTable
>
>
> If you knew there was another option why write "I doubt there is
With a huge helping hand from Relevance, the host of the Conj in
October, I'm hoping we can make it possible for Anthony Simpson (you
may know him as Raynes in #clojure irc) to attend the conference.
The blog post tells the story:
http://bit.ly/9dmeDe
I hope you'll check it out, and help in
Ahhh... I found it. I was actually using "print" not "prn".
Switching to prn works! :) (flushing?)
On Sep 10, 11:30 am, James Reeves wrote:
> On 10 September 2010 15:39, Colin Steele wrote:
>
> > It seems that when using ring/jetty, *out* is getting eaten or thrown
> > away. I'm a n00b to cloj
On Sep 10, 10:35 am, gary ng wrote:
> On Fri, Sep 10, 2010 at 8:49 AM, Isaac Gouy wrote:
> >> Huh ? point ? it was just a casual comment, no point was intended. And
> >> I have read some comments by Don that what is in the shoutout is way
> >> faster than Data.HashTable
>
> > If you knew there
On 2010/9/10 21:42, Phil Hagelberg wrote:
> On Fri, Sep 10, 2010 at 7:37 AM, Bahman Movaqar wrote:
>> Also another strange thing is that when I open a command prompt and
>> enter 'lein self-install' it fails; I figured out I have to issue a
>> dummy 'lein new' first for 'self-install' to start.
>
On 2010/9/10 21:42, Phil Hagelberg wrote:
> On Fri, Sep 10, 2010 at 7:37 AM, Bahman Movaqar wrote:
>> Also another strange thing is that when I open a command prompt and
>> enter 'lein self-install' it fails; I figured out I have to issue a
>> dummy 'lein new' first for 'self-install' to start.
>
I downloaded clojure-mode from http://github.com/technomancy/clojure-mode
and installed both clojure-mode.el and clojure-test-mode.el using M-x
package-install-from-buffer. On the following set of tests, M-x
clojure-test-run-tests seems to work, but M-x clojure-test-run-test on
just the pass func
On Fri, Sep 10, 2010 at 11:13 AM, Isaac Gouy wrote:
> Clearly, they did choose "to write all that code" "in order to get a
> much faster program" - I can't tell you if Andy had noticed the
> benchmark was about "Hashtable update and k-nucleotide strings" or
> whether he knew about Data.HashTable.
Did we really get this done in an hour? I haven't been part of the
community for long, but Rayne has been helpful to me already on
#clojure so I was going to donate a bit. Did I already miss my chance?
On Sep 10, 10:39 am, Chas Emerick wrote:
> With a huge helping hand from Relevance, the host of
Welcome to Clojure
On Sep 10, 2:55 pm, Alan wrote:
> Did we really get this done in an hour? I haven't been part of the
> community for long, but Rayne has been helpful to me already on
> #clojure so I was going to donate a bit. Did I already miss my chance?
>
> On Sep 10, 10:39 am, Chas Emerick
I've worked out a way to test local functions. When I tried it out by hand, it
felt good. See here: http://bit.ly/b1AoG7
Implementing it is on my wishlist for Midje, my test framework.
http://github.com/marick/Midje
On Sep 10, 2010, at 6:24 AM, alux wrote:
> Hello,
>
> I always thought it t
Just a little over an hour, yes! Raynes is going to the Conj. Thanks
to all who donated.
More info, numbers, and more thank-yous here:
http://bit.ly/aj0XPr
And, if you *wanted* to donate, but ended up coming in after we hit
our goal, please read the above post anyway. :-)
Thanks again t
On Fri, 10 Sep 2010 00:03:22 -0700 (PDT)
Meikel Brandmeyer wrote:
> Hi,
>
> On 9 Sep., 20:46, Mike Meyer 620...@mired.org> wrote:
>
> > The first problem with that is that this stuff seems show up
> > *everywhere* in Javaland. It's not just web apps, it's pretty much
> > anything.
>
> You jus
I wrote a brief thank you post on my blog (actually the first post on
this new blog. :>)
http://blog.acidrayne.net/thank-you-for-sending-me-to-the-conj
I'm unbelievably excited. I love you guys.
On Sep 10, 2:09 pm, Chas Emerick wrote:
> Just a little over an hour, yes! Raynes is going to the C
On Fri, 10 Sep 2010 07:11:18 -0700
gary ng wrote:
> On Fri, Sep 10, 2010 at 4:47 AM, John Cromartie wrote:
> > #!/usr/local/bin/clj
> >
> > (println "Content-type: text/plain\n")
> > (println "Hello, World!")
> > ^D
> >
> > Is that simple enough?
> >
> That was my thought too, java/clojure conso
Hi, I'm developing a small DSL with Clojure and I need to define many
similar functions. I'd like to do that programmatically, of course.
My solution (involving a simple macro) doesn't work, so I won't bother
you with it. I'll post it if anyone asks.
Basically what I need is: given a list of keyw
This still doesn't quite add up to me. What's the consequence of not
alter-var-root'ing maker-var# if def-form is a defmacro? Why would def-form be
a defmacro in the first place?
Also, I don't think you've given the example of the actual call that gave the
error, only the macroexpansion of it.
Just told that the site went down: not sure why, but I'll work on it
later. Sorry. <3
On Sep 10, 2:21 pm, Rayne wrote:
> I wrote a brief thank you post on my blog (actually the first post on
> this new blog.
> :>)http://blog.acidrayne.net/thank-you-for-sending-me-to-the-conj
>
> I'm unbelievably
I actually did this just the other day, to create a simple C-style
enum macro (I assume someone has a better version; this was a learning
exercise). You can see my project at www.github.com/amalloy/enum. It
sounds like your problem might be constructing the symbol to define;
the solution will look
SPOILER BELOW. I'm not sure how much help you want, so I went ahead
and wrote your macro. Whitespace padding so that you won't see it if
you don't want the whole solution:
user=> (defmacro make-fn [key]
(let [sym (->> key name (str "synthetic-") symbol)]
`(defn ~sym [n#] (= n# ~key
It's working for me now (but wasn't earlier, so this is probably a
sign that it's fixed).
On Sep 10, 12:57 pm, Rayne wrote:
> Just told that the site went down: not sure why, but I'll work on it
> later. Sorry. <3
>
> On Sep 10, 2:21 pm, Rayne wrote:
>
> > I wrote a brief thank you post on my bl
Brian, thats way cool!
(I still have to think this through, thats high magic!)
Thank you for sharing this, and kind regards, alux
On 10 Sep., 21:04, Brian Marick wrote:
> I've worked out a way to test local functions. When I tried it out by hand,
> it felt good. See here:http://bit.ly/b1AoG7
>
Alan, thank you for your reply.
Unfortunately your solution is very similar to mine and it suffers
from the same problem (maybe I'm using it incorrectly, I don't know).
If I write:
(doseq [x '(:a :b)]
(make-fn x))
it defines a single function "synthetic-x". Is there a way to make
this work?
On Fri, Sep 10, 2010 at 12:17 PM, Mike Meyer
wrote:
> 1) Write program in chosen language that runs on the JVM.
> 2) Compile program to class file(s).
> 3) Use some tool to create a manifest file.
> 4) Run jar to create jar file.
> 5) Distribute jar file.
>
> Users can then run it via double-click
On Sep 10, 11:54 am, gary ng wrote:
> On Fri, Sep 10, 2010 at 11:13 AM, Isaac Gouy wrote:
> > Clearly, they did choose "to write all that code" "in order to get a
> > much faster program" - I can't tell you if Andy had noticed the
> > benchmark was about "Hashtable update and k-nucleotide strin
http://blog.acidrayne.net/?p=4 I threw up a wordpress site and posted
this there. Maybe it'll last through a couple requests. :p
On Sep 10, 2:57 pm, Rayne wrote:
> Just told that the site went down: not sure why, but I'll work on it
> later. Sorry. <3
>
> On Sep 10, 2:21 pm, Rayne wrote:
>
>
>
>
Hi,
Am 10.09.2010 um 21:17 schrieb Mike Meyer:
> 1) Write program in chosen unix-friendly interpreted language.
You lost exactly here. "unix-friendly". Since you keep putting your context
over everything, I will also keep on putting mine over everything. Ruby,
Python, Perl, Tcl, ... are all no
On Fri, Sep 10, 2010 at 2:04 PM, Isaac Gouy wrote:
> It's starting to look like actually there was a point you wanted to
> make ;-)
You mean the 'no chice' part ? yes.
You mean the why not Data.Hashtable comment ? I don't think so.
>
> If you change the requirement to something else you'd simpl
Hi,
On Fri, Sep 10, 2010 at 18:15, User7 wrote:
>
> I'm using emacs starter kit and clojure-test-mode 1.4 installed using
> elpa. Running clojure-tests-run-tests seems to work fine, but clojure-
> test-run-test seems flakey. This blog post from May says the elpa
> version is out of date.
>
> ht
problem: convert a collection [1 2 0 1 2 3 0 1 2 3 0 0 1 2] into
partitions like:
((1 2) (0 1 2 3) (0 1 2 3) (0) (0 1 2))
In this case, start each partition on a 0.
I looked at the various partition functions but none of them would do
the trick without adding unnecessary complexity. Instead I w
Hi Mike,
I think this is more about convenience than simplicity. In both Unix and Java
deployment is complex, and often complicated as well. In spite of this, small,
one-off things should be convenient to deploy, and Unix does this better in
some contexts.
There is no reason we can't make one-
Hi icemaze,
Please look at how fns are generated in http.async.client
http://github.com/neotyk/http.async.client/blob/master/src/http/async/client/util.clj#L54
this macro is later used here:
http://github.com/neotyk/http.async.client/blob/master/src/http/async/client.clj#L43
HTH,
Hubert.
On Se
On Sep 10, 2:22 pm, gary ng wrote:
-snip-
> My initial comment was all about 'it seems that Haskell submission is
> not the typical elegant form' and to me because of the specific you
> want to measure, there is no acceptable elegant Haskell form.
So what are we to do when there's a problem tha
I see. It's hard to imagine how this could work, since macros don't
have access to runtime data like the value of x in your example.
Perhaps you're better off writing a function that returns a closure,
and iteratively def'ing those?
user=> (defn make-kw-fn [kw]
#(= kw %))
#'user/make-kw-f
PS this is super-ugly and I'm always embarrassed when I find myself
using eval in a lisp. While this works, I'd love it if someone could
tell me how to do it with macros.
On Sep 10, 3:07 pm, Alan wrote:
> I see. It's hard to imagine how this could work, since macros don't
> have access to runtime
On Fri, Sep 10, 2010 at 3:06 PM, Isaac Gouy wrote:
> So what are we to do when there's a problem that has "no acceptable
> elegant Haskell form"?
Depending on the intend, for you benchmark program, write something
like what it is now.
For real life cases, call an exnternal library, use another la
On Fri, 10 Sep 2010 23:21:01 +0200
Meikel Brandmeyer wrote:
> Hi,
>
> Am 10.09.2010 um 21:17 schrieb Mike Meyer:
>
> > 1) Write program in chosen unix-friendly interpreted language.
>
> You lost exactly here. "unix-friendly". Since you keep putting your context
> over everything, I will also
On Fri, 10 Sep 2010 17:29:24 -0400
Stuart Halloway wrote:
> Hi Mike,
>
> I think this is more about convenience than simplicity. In both Unix and Java
> deployment is complex, and often complicated as well. In spite of this,
> small, one-off things should be convenient to deploy, and Unix does
Why not explicitly feed the macro the keyword map if that is what it wants?
(defmacro ultra-synth [prefix keywords]
(let [symbols (map (comp symbol name) keywords)
fn-names (map (comp symbol
(partial str prefix) name) keywords)
defn-forms (map
It sounds like he's going to be given the list of keywords by the
user, and won't have it as a compile-time literal. Maybe he's load'ing
a .clj file, for example, that someone will write in the future. Maybe
you can combine our two approaches to get something that works and
isn't ugly, but I'm havi
Yeah, I guess I could use a macro to generate the "call" to the other
macro in a way similar to how you used it. Thank you, that should
definitely work. I'll try it right now.
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I agree: eval never looks pretty.
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there's always apply-macro from contrib for doing perverse stuff like
that, so you don't
have to *see* eval if you don't want to :)
--Robert McIntyre
On Fri, Sep 10, 2010 at 8:24 PM, icemaze wrote:
> I agree: eval never looks pretty.
>
> --
> You received this message because you are subscribed
Yes, I think I'll have to pass the keywords as literals. I don't think
there's a way around that (other than using eval, as per Alan's
solution).
I was too excited about Hubert's hint and I found myself in the exact
same problem with the second macro.
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You received this message because you are
You are mostly right in your assumptions: I could dump the keywords in
the clj as literals but it would be tedious and not elegant at all.
Eval's not pretty but it works; plus it's there for a reason, like
working around the shortcomings of the language (and of my brain).
I was about to post my so
This is probably not the prettiest way to do it, but I think it gets
the job done:
(defn make-sym [keyword]
(->> keyword name (str "prefix-") symbol))
(defn make-fn [keyword]
(let [n (gensym)]
(list 'defn (make-sym keyword) [n] (list '= n keyword
(defmacro make-fns [keywords]
`(do ~
On 9/10/10 9:03 AM, Laurent PETIT wrote:
Got it. You cannot invoke (import) (or (ns)) from within the function
definition. The function is already being evaluated, and it's "too
late".
This works fine for me:
(do
(import '(javax.swing JOptionPane))
((fn []
(println "Hello World")
I found when working on ticket 191 (dead now, I suppose) that counting the
stack elements is not reliable, but = works to get rid of duplicates. Below
you can compare java's to your new function - the clojure has one duplicate
element (the very last one). Also, I find the "..." useful to know
som
That is very elegant but has the exact same problem in that the macro
must be called on a literal vector of keywords.
--Robert McIntyre
On Fri, Sep 10, 2010 at 5:41 PM, Btsai wrote:
> This is probably not the prettiest way to do it, but I think it gets
> the job done:
>
> (defn make-sym [keyword
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