Thanks. That did the trick.
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Looks fantastic, this is exactly what I was thinking about when I said Clojure
libraries need more discoverability.
Excellent work.
David
On Wednesday, 23 February 2011 at 10:12 pm, semperos wrote:
> Thanks for taking the time and effort to put this together.
>
> -Daniel
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Thanks for taking the time and effort to put this together.
-Daniel
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On Wed, Feb 23, 2011 at 9:23 PM, Brian Marick wrote:
>
> On Feb 23, 2011, at 3:06 PM, David Jacobs wrote:
>
>> Thanks for the suggestions. I should say that I was only giving you my
>> impression of using Clojure re: it's version number. I'm not saying any of
>> the things I listed are not doabl
On Feb 23, 2011, at 3:06 PM, David Jacobs wrote:
> Thanks for the suggestions. I should say that I was only giving you my
> impression of using Clojure re: it's version number. I'm not saying any of
> the things I listed are not doable, just that they feel very ad-hoc and not
> quite ready for
On Wed, Feb 23, 2011 at 4:54 PM, Alessio Stalla wrote:
> On 23 Feb, 19:51, Ken Wesson wrote:
>> Java has a lack of this top-down processing,
>
> That's not true, what do you mean?
>
> class Foo {
> void bar() { baz(); }
> void baz() {}
> }
>
> compiles fine, as well as
>
> class Foo {
> void b
Clojure itself does not use exceptions for control flow. Java libraries
sometimes do.
-Stuart Sierra
clojure.com
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Tim Dysinger did it with Hazelcast:
https://github.com/dysinger/apparatus
-Stuart Sierra
clojure.com
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Reduce!
(reduce (fn [new-map [key value]] (assoc new-map ...)) {} old-map)
This is nice because you can change both keys and values, even add or remove
keys.
For something simpler:
(into {} (fn [[key value]] ... ) old-map)
-Stuart Sierra
clojure.com
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I don't really understand why snapshots should be in Clojars at all,
yeah. It seems to me like CPAN, RubyGems, etc., encourage versioned
software and not "snapshots", because they're going for non-volatile,
stable packages. I think Clojars should, too. You're right, that's
neither here nor there re
On Feb 23, 2011, at 4:06 PM, David Jacobs wrote:
> > - better discovery for existing, well-tested libraries.
>
> You can search on http://clojars.org/. This works well for me.
> However, the key to well tested libraries is having people give
> feedback if a library breaks or is badly documented
On 23 February 2011 23:37, Sam Aaron wrote:
> How about a Music & Sound Synthesis section with a pointer to Overtone?
Added.
- James
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James Reeves wrote:
I'm sure I've covered only a very small proportion of Clojure
libraries out there, so if you'd like to suggest a project that's not
on there, please do so in this thread, or in an email to me. I'll try
and update the site as quickly as possible.
How about a Music & Sound
I've put together a small, static site inspired by The Ruby Toolbox
(ruby-toolbox.com), called (of course) The Clojure Toolbox.
It's currently just a series of categorized links to Clojure projects,
but I'll be gradually adding more functionality to it over the coming
weeks. If you've been to the
>> - better discovery for existing, well-tested libraries.
>
> You can search on http://clojars.org/. This works well for me.
> However, the key to well tested libraries is having people give
> feedback if a library breaks or is badly documented or doesn't meet
> their needs.
I'm currently working
I don't have a strong opinion about the version number but I want to say that
David's critiques of the state of the ecosystem all ring true to me. FWIW (and
I offer this only because Saul is "genuinely interested in how they don't meet
your needs" :-) here are my own responses to David's sugges
>
> I come from the Ruby world, and Ruby isn't even a 2.0, so my perspective is
> definitely colored.
>
It seems to me like (most) of the things you are talking about are not core
language specific things. In particular for package management Ruby uses
Rubygems which is a separate project, and ju
On 23 Feb, 19:51, Ken Wesson wrote:
> Java has a lack of this top-down processing,
That's not true, what do you mean?
class Foo {
void bar() { baz(); }
void baz() {}
}
compiles fine, as well as
class Foo {
void bar() { new Baz(); }
}
class Baz {}
> and it sometimes causes
> problems be
On Wed, Feb 23, 2011 at 3:12 PM, Jonathan Mitchem wrote:
> I know it sounds like a finicky, minor issue, but it is actually that
> important to me. It's not rejection to change, inasmuch as
> unwillingness to intentionally make my life harder.
>
Consider how macros immediately affect the compila
Hi Saul,
Thanks for the suggestions. I should say that I was only giving you my
impression of using Clojure re: it's version number. I'm not saying any of
the things I listed are not doable, just that they feel very ad-hoc and not
quite ready for a "2.0".
I come from the Ruby world, and Ruby isn'
On Feb 23, 9:54 pm, clj123 wrote:
> I'm getting the following exception trying to insert large batch data
> in the database.
I'd try to write less data at one time to the database. Start with,
say, 20 rows at a time.
Saul
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On Feb 23, 9:42 pm, clj123 wrote:
> I have been getting this exception:
> java.lang.Exception: transaction rolled back:
> java.lang.InterruptedException
> at clojure.contrib.sql.internal$throw_rollback.invoke(internal.clj:
> 142)
I can only take some wild guesses I'm afraid. The rollback
I'm getting the following exception trying to insert large batch data
in the database. Any ideas?
java.lang.Exception: transaction rolled back:
java.lang.InterruptedException
at clojure.contrib.sql.internal$throw_rollback.invoke(internal.clj:
142)
at clojure.contrib.sql.internal$tr
I have been getting this exception:
java.lang.Exception: transaction rolled back:
java.lang.InterruptedException
at clojure.contrib.sql.internal$throw_rollback.invoke(internal.clj:
142)
at clojure.contrib.sql.internal$transaction_STAR_.invoke(internal.clj:
169)
at com.protot
I have been getting this exception:
java.lang.Exception: transaction rolled back:
java.lang.InterruptedException
at clojure.contrib.sql.internal$throw_rollback.invoke(internal.clj:
142)
at clojure.contrib.sql.internal$transaction_STAR_.invoke(internal.clj:
169)
at com.protot
This discussion has been had multiple times on this list, not sure how much
new information you will get. See the following for a couple examples:
http://groups.google.com/group/clojure/browse_thread/thread/968e9066223c3a2b/fbce84869dbf4ce6?lnk=gst#
http://groups.google.com/group/clojure/browse_t
Hi,
Is there a guide to the conventions for naming and structuring
namespaces in a Clojure project?
I see for example that the ".core" namespace is fairly common in
different projects. Is this also where the "-main" entry point should
live?
Also is it typical to have code living in "someproject"
On Wed, Feb 23, 2011 at 3:12 PM, Jonathan Mitchem wrote:
>> Java has a lack of this top-down processing, and it sometimes causes
>> problems because the order in which static initializers will execute
>> is not generally predictable.
>
> If you're programming with a side-effect free functional app
> Java has a lack of this top-down processing, and it sometimes causes
> problems because the order in which static initializers will execute
> is not generally predictable.
If you're programming with a side-effect free functional approach,
that shouldn't be a problem right?
Or are you saying tha
Below are suggestions to the shortcomings you mention. I'm genuinely
interested in how they don't meet your needs.
On Feb 23, 8:42 pm, David Jacobs
wrote:
> - definitive, simple, integrated package management
Leiningen and Cake?
> - a better REPL experience out of the box (esp. Jline support)
Sl
If we want to practice semantic versioning[0] and the next iteration is
introducing backwards-incompatible changes, we should go with 2.0. However,
I have my reservations. Clojure itself feels solid to code with, but the
*ecosystem* doesn't feel very 2.0. For that it would need:
- definitive, simp
A related problem occurs when you separate your code into multiple
namespaces. You can't create cyclic links with use or require. There's a
case to be made for avoiding that situation, but the solution clojure
provides when you need it is to import the vars using ns-resolve as in (def
myfn (ns-r
Gang -
I'm still in the "playing" stage with the language. I'm exploring
Clojure and
prototyping ideas for future directions. The language is very
expressive and
its community is quite supportive.
One thing the environment lacks is a good, current book for
beginners. Oh,
there are a couple of
Java has a lack of this top-down processing, and it sometimes causes
problems because the order in which static initializers will execute
is not generally predictable.
I don't have any problems with Clojure files being processed from the
top down. I prefer to define my terms (simpler functions) be
With C# inside of Visual Studio, I have very good IDE support for top-
down design. If I use an undeclared method, it is displayed in red,
with a tooltip saying "Cannot resolve symbol '[symbol name]'". A
context menu provides me "generate > method stub", which will do what
it says, and add parame
On 23 Feb, 01:28, Mark Engelberg wrote:
> I'm not crazy about this behavior either, but my understanding is that
> this is an intentional design decision that is a direct consequence of
> two things:
> 1. In Clojure IDEs, people want to be able to feed the compiler
> single functions and expressi
On Feb 22, 2011, at 6:28 PM, Jonathan Mitchem wrote:
> It just seems to interrupt my flow when coding. Maybe that's not a
> legitimate enough concern, but coming from first principles, that
> seems to be one of the fundamental gains of Clojure.
This annoys me as well. I made an Emacs macro tha
That is true. Thank you for the reminder.
On Feb 23, 10:18 am, Laurent PETIT wrote:
> 2011/2/23 Benny Tsai
>
> > My guess is that Clojure's fmap behaves that way because it is modeled
>
> Note that it's not "Clojure's fmap".
> fmap is a function in a clojure contrib namespace.
>
> The distincti
On Wed, Feb 23, 2011 at 11:55 AM, Benny Tsai wrote:
> My guess is that Clojure's fmap behaves that way because it is modeled
> after Haskell's fmap
Hmm, I thought it might be a Haskell thing.
> To pass both keys and values to your transforming function, I think
> Alan's idea of using 'walk' is t
2011/2/23 Benny Tsai
> My guess is that Clojure's fmap behaves that way because it is modeled
>
Note that it's not "Clojure's fmap".
fmap is a function in a clojure contrib namespace.
The distinction may be important.
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"I recently found myself wanting to work with Amazon’s Simple Queue Service
(SQS), but I could find no reasonable Clojure library for accessing it. Of
course, AWS’ own Java SDK is the canonical implementation of their APIs (at
least in the JVM space), so putting together a Clojure wrapper that
> The name of the Enum Class is (Unfortunately) IContainer.Type that lives in
> com.xuggle.xuggler package.
> I believe it is the dot within the IContainer.Type class name that is giving
> me headache.
>
> I'd appreciate any input or work around that I am not aware of.
Try IContainer$Type/READ and
My guess is that Clojure's fmap behaves that way because it is modeled
after Haskell's fmap, which only accepts functions that operate only
on the values due to the way fmap (and the Functor typeclass that fmap
belongs to) is modeled in Haskell's type system.
To pass both keys and values to your t
Thanks Ken. I was able to use enums before as you have suggested but here is
the specific issue:
The name of the Enum Class is (Unfortunately) IContainer.Type that lives in
com.xuggle.xuggler package.
I believe it is the dot within the IContainer.Type class name that is giving
me headache.
I'd
And at the underkill end of the spectrum :)
(comp #(.toUpperCase %) mymap)
(Seriously: might be feasible of you don't need the map properties
afterwards...)
Sincerely
Meikel
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Perhaps this is an overkill, but it comes to my mind :) (I'm new to clojure)
user=> (def mymap {:a (ref "foo") :b (ref "bar")})
#'user/mymap
user=> mymap
{:a #, :b #}
user=> (map #(dosync (ref-set %1 (repeat 2 (deref %1 (vals mymap))
(("foo" "foo") ("bar" "bar"))
user=> mymap
{:a #, :b #}
St
Can anybody explain why fmap, when operating on an IPersistentMap,
only passes the function the value of the map entry, instead of the
entire map entry (i.e., the key and value pair)? It seems a bit odd
in that all the other implementations of fmap operate on the entire
item in the sequence. Also
There has been some debate about this over time in the clojure mailing list.
I too regret from time to time the ability to organize my code "top-down"
without having to resort to "tricks" (declare).
I had suggested that unknown vars encountered during compilation could just
be "automatically decla
HB writes:
> I'm trying to implement searching algorithm for binary tree.
>
> (defrecord Node [data left-child right-child])
>
> (defrecord Tree [root])
>
> (defn find-node [tree data]
> "Search for a node"
> (let [root (:root tree)]
> (loop [current root]
> (if (= data (:data curre
I've been programming agent-based models in clojure for the last 2 years,
and I've found that having a vector full of refs works fine. If two
individuals interact (in my case, form a relationship), I use dosync and
alter in a parallel environment to ensure that noone is starting more
relationsh
On Feb 23, 1:17 am, Mark Engelberg wrote:
> 3. What is Clojure's state-of-the-art for building distributed,
> fault-tolerant systems with its existing feature set and/or leveraging
> popular libraries?
>
I've not used it, but jobim is worth looking at since it brings
together all the components r
On Feb 22, 4:08 am, yair wrote:
> I'm hoping this is a dumb question and I've missed something obvious.
> I have a map with various key-value pairs and I want to transform some
> of the values, e.g.
>
> (def mymap {:first "john" :last "smith" :age 25}) and say I want to
> change the strings to be
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