Hello Everybody,
Let us say I have something like
(def s (promise))
.
.
.
.
now can I check if the promise hase been delivered ..
Thanks
Sunil.
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Nope.
here's the source:
Clojure classpath initialized by cljr.
user= (source promise)
(defn promise
Alpha - subject to change.
Returns a promise object that can be read with deref/@, and set,
once only, with deliver. Calls to deref/@ prior to delivery will
block. All subsequent derefs
See also here:
http://groups.google.com/group/clojure-dev/browse_thread/thread/bbf34a823f3081d6
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Hi Sunil,
Before it gets to clojure.core you could use it like that:
http://github.com/neotyk/http.async.client/blob/master/src/http/async/client/util.clj#L21
Cheers,
Hubert.
On Tue, Sep 14, 2010 at 8:51 AM, Sunil S Nandihalli
sunil.nandiha...@gmail.com wrote:
Hello Everybody,
Let us say I
I got tripped up on permissions on oss.sonatype.org as my account doesn't
give me access to deploy org.clojure.
You don't have org.clojure permissions, so the staging artifacts went into
default 'Central Bundles' profile, artifacts in which need to be reviewed
and released by us.
I've not (yet -
I'm running a large hadoop job in which merge-with is called millions
of times to aggregate values among about 1000 keys. Basically we are
counting the number of times the keys occur among all entries and
using merge-with as the reduce function.
In the output, the keys are often duplicated (I've
Glad I could help,
Hubert.
On Tue, Sep 14, 2010 at 9:39 AM, Sunil S Nandihalli su...@gridpro.com wrote:
Thanks Hubert,
That is exactly what I was looking for.
Sunil.
On Tue, Sep 14, 2010 at 12:54 PM, Hubert Iwaniuk neo...@kungfoo.pl wrote:
Hi Sunil,
Before it gets to clojure.core you
Thanks Hubert,
That is exactly what I was looking for.
Sunil.
On Tue, Sep 14, 2010 at 12:54 PM, Hubert Iwaniuk neo...@kungfoo.pl wrote:
Hi Sunil,
Before it gets to clojure.core you could use it like that:
Very good presentation!
But it's only the begin. Let's motivate the community to participate
in those meetings.
Clojure, LISP , Distributed Systems and Machine Learning are great
topics in conputer world. We must cooperate to do this job better and
better.
Nice regards,
On Sep 13, 7:49 pm,
Hi,
I don't fully understand how to make real use of varargs and
destructuring. c.c.sql/create-table is defined as follows:
(create-table name specs)
Called as follows:
(c.c.sql/create-table
:tblname
[:cola :text NOT NULL PRIMARY KEY]
[:colb :number NOT NULL]
[:colc :blob NOT NULL)]
I
Hi mike,
Your problem is about to calling a function with a list of arguments,
which is independent of varargs. Take a look at the apply function.
It does what you're looking for.
Cheers
-Patrick
On Sep 14, 2:47 am, Michael Ossareh ossa...@gmail.com wrote:
Hi,
I don't fully understand how to
Just if any one is gets the same problem: I updated slime and slime-
repl to the 20100404 version, and everything works again.
Regards, alux
PS.: For completeness: swank-clojure version 1.1.0
On 11 Sep., 12:40, alux alu...@googlemail.com wrote:
Hello Bruce,
would you please provide the
That works. Thanks!
take care,
Mike
On Sep 14, 1:38 am, Meikel Brandmeyer m...@kotka.de wrote:
Hi,
I can reproduce it with 1.2 and 1.3.0-master-20100911.130147-5. And I
think I know, what the problem is: You must not recur out of a
binding. The binding implicitely contains a try with
i just emerged from a whirlwind read
through 'practical clojure'. i like this book
very much.
it's a very well structured, carefully written
book. kind of a minimalistic approach but minimalistic
in the positive sense clojure itself is.
so now 'students' have really good choices
among 4 high
why isn't the type of a function : clojure.lang.IFn ?
it's this instead :
user= (type #(str wonder what this is))
user$eval7$fn__8
would love if you would answer here :
http://stackoverflow.com/questions/3708516/what-type-is-a-function
thanks,
alex
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On Tue, Sep 14, 2010 at 2:35 PM, Belun alexandrurep...@gmail.com wrote:
why isn't the type of a function : clojure.lang.IFn ?
Actually you assume the existence of an unique type.
In most OO-language, and Clojure inherits that from its host, an
object has multiple types.
Indeed an object can be
That would be very awkward:
user= (- (range) (filter even?) (drop 10) (take 5))
LazySeq
user= (- (range) (filter even?) (drop 10) (take 5) first)
20
user= (- (range) (filter even?) (drop 10) (take 5) second)
22
...
On Sep 14, 5:20 am, Ranjit rjcha...@gmail.com wrote:
Thanks for clearing
Also, if you want the behavior you describe, it's easy to get it in
the current approach, whereas if the REPL didn't consume lazy
sequences it would be very hard to get it to. Try:
(def myvar (filter even? (range))) ; prints the Var object
(nth myvar 1) ; realizes the first 10,000 items in
I'm looking for a way to do simple colored-lines-and-shapes graphics in a
window that requires:
- No libraries beyond what is built into java, clojure 1.2, and clojure-contrib
(which is what one gets automatically in a new Eclipse/Counterclockwise
project).
- As little additional code as
First, you could use destructuring to make your map function cleaner.
The following is exactly identical to your definition. It declares
that it will be passed one argument; because that argument is [...],
it will be a seq; it asks that the seq be split into y, the first
element, and z, a seq of
Hi,
I've been using my own wrapper for Java's built-in logging so far,
but today I took a look at clojure.contrib.logging because I would
like to start using spy. It really seems like Clojure should have
some simple logging out of the box, but this is not the case yet. Can
we make it a bit
I try to spare you all the details.
I want to call a java function:
foo (String str, BarInterface bar)
with an argument bar of class Bar that implements BarInterface.
The call works fine from Java. But Clojure throws a
ClassCastException.
I never met an error like this and have no idea where to
This is working fine from Clojure. I don't see how you can get help
without providing some information about the code you have that isn't
working.
user (definterface Printable (print []))
user.Printable
user (definterface User (use [^user.Printable p]))
user.User
user (def p (reify Printable
Maybe the ants demo will help - http://tinyurl.com/29rqe5r
On Sep 14, 9:55 am, Lee Spector lspec...@hampshire.edu wrote:
I'm looking for a way to do simple colored-lines-and-shapes graphics in a
window that requires:
- No libraries beyond what is built into java, clojure 1.2, and
I have got a question about the Clojure ensure and how it actually
works and the documentation doesn't provide enough information.
I see a few different solutions:
1) An optimistic approach: Once a ref is 'ensured' it is included in
the conflict detection set. This means that the approach is
The first one is correct.
On Tue, Sep 14, 2010 at 3:22 PM, peter veentjer alarmnum...@gmail.comwrote:
I have got a question about the Clojure ensure and how it actually
works and the documentation doesn't provide enough information.
I see a few different solutions:
1) An optimistic
Actually, the second one is basically it. (Except that I don't know the Oracle
reference, so can't speak to that.)
Stu
The first one is correct.
On Tue, Sep 14, 2010 at 3:22 PM, peter veentjer alarmnum...@gmail.com wrote:
I have got a question about the Clojure ensure and how it actually
Alan and Patrick, thank you so much! I've come across apply in JS and
it really should have clicked for me!
So I have the following, and it works very well:
(defn make-tables
[connection schema]
(sql/with-connection connection
(doseq [[name specs] schema]
(try
Interesting possibility, hard for me to test for directly. But
following that idea, I changed the keys to strings and the problem
went away, so I'm happy :) Thanks!
On Tue, Sep 14, 2010 at 4:45 AM, Stuart Halloway
stuart.hallo...@gmail.com wrote:
Can you look at the class of these keys and see
Could you try the numeric keys against the master branch? The num/prim/equiv
changes should help with this.
Stu
Interesting possibility, hard for me to test for directly. But
following that idea, I changed the keys to strings and the problem
went away, so I'm happy :) Thanks!
On Tue,
So clojure 1.2.0 is now in maven central:
dependency
groupIdorg.clojure/groupId
artifactIdclojure/artifactId
version1.2.0/version
/dependency
I got sidetracked with phonecalls from parents last night and didn't get
clojure-contrib submitted for central but will do that today.
Now I
Ok, I have a 1 and 2 :)
So is it pessimistic or optimistic? So encounter time ensure or commit
time ensure?
On Sep 14, 9:36 pm, Stuart Halloway stuart.hallo...@gmail.com wrote:
Actually, the second one is basically it. (Except that I don't know the
Oracle reference, so can't speak to that.)
On Sep 14, 2010, at 2:13 PM, Miki wrote:
Maybe the ants demo will help - http://tinyurl.com/29rqe5r
Thanks Miki -- I've seen that code, and the video of Rich discussing it, and
I've been toying with some of the elements that it uses (JFrames etc.). But
that is in a more elaborate context
I had a quick peek at the stm paper of mark volkmann
This function takes a Ref. It prevents other transactions from setting
an in-transaction value for the Ref, which also prevents them from
committing a new value. This can be used to avoid write skew. It also
helps avoid retries due to write
I think you could just keep a vector of (color,shape) pairs as an
atom, and reify a subclass of JPanel whose paint() method closes
around that atom, calling (.draw shape color). Then as long as you
call repaint every time you modify the atom, you should be done. Seems
like it's hard to see a
Great. Looks shiny and idiomatic to me.
On Sep 14, 12:06 pm, Michael Ossareh ossa...@gmail.com wrote:
Alan and Patrick, thank you so much! I've come across apply in JS and
it really should have clicked for me!
So I have the following, and it works very well:
(defn make-tables
[connection
Hi,
Am 14.09.2010 um 23:01 schrieb Alan:
(defn make-tables
[connection schema]
(sql/with-connection connection
(doseq [[name specs] schema]
(try
(apply sql/create-table name specs)
(catch Exception e
(prn e))
You actually don't
First, c.c.logging was intended as a wrapper around some java logging
lib. There's a plethora of them, so I saw no reason to add another.
As for simple out of the box logging, it's there (sort of) via
java.util.logging, and it defaults writing to stdout at INFO level.
That said, I'm inclined to
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