Great Kevin,
you just poured more oil on the fire...
Code is not the only thing about Clojure. Getting newbies on board is
needed and if they need pointers fine with me. There has to be a place to
jump start people. This mailing is a starting point and has to be somewhat
friendly.
I myself can
I would not be surprised if some regulatory agency (UE) puts it's nose in
this if it has real impacts. Especially if Oracle does not abide by previous
agreements with the Open Source community.
If a regulator sanctions Oracle, others will follow most likely.
If Oracle wants to be the next
For my part, I need stuff done prior to anything being done including
routing a request and I need to access the servlet context.
I'll explain this in a couple of days, it's related to a deployment problem.
I am in it right now.
Robert McIntyre r...@mit.edu wrote ..
Why not use good old runonce
Then I would need to place the call within Ring... I tried to do what I
need in middle ware but it's simply impossible. What I need to init is
related to how routes are dispatched by Ring and needs to be done outside
of Ring.
I need the servlet context, I have to get the container call me with
Yep but some app servers have bugs with this interface (GlassFish 2,
jetty 6.1, tomcat 5.5, ...) and the interface is not called appropriately.
There are less problems reported with the load-on-startup flag.
Of course if you know your app server's behavior regarding this feature,
it might not be
Hi,
Normally this is done use an initialization servlet.
You need a separate class inheriting javax.servlet.http.HttpServlet
and a entry in your web.xml file to get it executed once at application
startup.
Look at load-on-startup here:
From http://docstore.mik.ua/orelly/java-ent/servlet/ch03_03.htm
-
Just like applets, servlets can define init() and destroy() methods. A servlet's
init(ServletConfig) method is called by the server immediately after the server
constructs the servlet's instance.
We use a combination of apache common logging and log4j.
In dev we can remove log4j and still have some decent console logging.
Luc P.
Dave Newton davelnew...@gmail.com wrote ..
On Tue, Nov 23, 2010 at 5:46 PM, Stuart Sierra
the.stuart.sie...@gmail.comwrote:
On Nov 20, 5:56 pm,
Daniel Gagnon redalas...@gmail.com wrote ..
I spoke to the guys on reddit. They said it is tongue-in-cheek.
They have no knowledge of functional programming
???
but strongly feel it isn't suited to their field.
???
Isn't this a bit contradictory ? It's ok to follow your own gut
user= (time (filter identity [ nil 1 2 nil 4]))
Elapsed time: 0.053219 msecs
(1 2 4)
user= (time (remove nil? [ nil 1 2 nil 4]))
Elapsed time: 0.065092 msecs
(1 2 4)
Choose the flavor your prefer...
Luc P.
Glen Rubin rubing...@gmail.com wrote ..
What is the fastest way to remove nils from a
Oups.. :)
Stuart Campbell stu...@harto.org wrote ..
On 17 November 2010 12:37, lprefonta...@softaddicts.ca wrote:
user= (time (filter identity [ nil 1 2 nil 4]))
Elapsed time: 0.053219 msecs
(1 2 4)
user= (time (remove nil? [ nil 1 2 nil 4]))
Elapsed time: 0.065092 msecs
(1 2 4)
Re-oups, Clojure 1.0 to 1.2 upgrade glitch :)
Mark Engelberg mark.engelb...@gmail.com wrote ..
(keep identity l) is preferable to (filter identity l)
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Hi,
You are lucky you do not work with me day to day, my sense of humor
is not always on. The last two weeks I had to interact with zombies
in two different IT departments (two separate customers) and swearing
mode was on for most of that period. Yesterday was particularly awful.
I think you
Sometimes a bit of acid in a joke improves it...
I`ll be there next year certainly :))
Baishampayan Ghose b.gh...@gmail.com wrote ..
Luc,
Gosu - standard athlete on performance enhancing drugs (EPO, steroids, ...)
Clojure - genetically modified athlete
A big generation gap, comparison
Hi,
Make sure none of your serial I/O calls are executing while compiling...
If you have anything like global defs that indirectly try to do an I/O
it will get executed as part of the AOT.
I have been playing with AOT a lot in the last two months and got trapped
a couple of time with this. Your
Gosu - standard athlete on performance enhancing drugs (EPO, steroids, ...)
Clojure - genetically modified athlete
A big generation gap, comparison stops here, no need to discuss details :)))
Luc P.
David Sletten da...@bosatsu.net wrote ..
I don't want to start any language wars, but this is
Sticking to long and double gets away from Java semantic but it is done
to improve numeric performances. You can actually hint in 1,3 on the return
type of a function to avoid automatic boxing and have your code work
entirely with a native type. Boxing if I recall correctly will
convert
Steven Arnold thoth.amon.i...@gmail.com wrote ..
On Nov 3, 2010, at 11:43 AM, Sean Corfield wrote:
Why are folks so insistent on monolingual systems?
Business reasons. Two languages means staffing expertise in both languages,
either
people who know both and cost more, or two people who
Steven Arnold thoth.amon.i...@gmail.com wrote ..
On Nov 5, 2010, at 10:20 AM, lprefonta...@softaddicts.ca wrote:
Having expert people mastering several tools in any project increases the
like
hood of being on time and within budget.
I agree partially. Given unlimited resources, it
Ken Wesson kwess...@gmail.com wrote ..
On Fri, Nov 5, 2010 at 2:42 PM, lprefonta...@softaddicts.ca wrote:
Customers are not getting usable components delivered in the near future.
They just get vague promises that something will be delivered in x years.
Nothing tangible there just vapor
Rich at the Conj explained that he wanted to remove a bunch of
verifications each time a value was referenced to gain some speed.
The basis was of his reasoning was that an unbound
value is an exception more than a common thing and all these verifications at
run time were really slowing things
Sean Corfield seancorfi...@gmail.com wrote ..
On Wed, Nov 3, 2010 at 8:51 AM, Luke VanderHart
luke.vanderh...@gmail.com wrote:
I have nothing but respect for Rails, and I look forward to the day
when Clojure has a comparable system.
I sort of have to ask why? - what's wrong with using
Luke, I must agree with Wilson, other frameworks have some advantages
presently over Clojure for certain tasks.
We use RAILS and JRuby to create CRUD GUIs with ActiveScaffold.
Our controllers are typically 20 lines or less of configuration statements...
We do not need to maintain HTML templates
Ahem..
Your comment misses the point. We chose RAILS because it met 90% of our
needs... not because of some claims it would solve any problem.
We then selected RAILS over Grails then based on the time it required us to
code, the # of code lines was a very good measure then to make our final
user= (doc ffirst)
-
clojure.core/ffirst
([x])
Same as (first (first x))
nil
user=
That could help a bit :
Luc P.
andrei andrei.zhabin...@gmail.com wrote ..
Hi,
I have a code similar to this:
(def pairs (list [1 :a] [2 :b] [3 :c]))
...
(loop [ps pairs,
Hi Stu,
I came back from the Conj with 12 pages of notes in a 2 inches by 3 inches
notebook. That represented 3 months of work at least.
On the return flight, I added another 3 pages of notes. I made some connections
between ideas exposed at the Conj in relation with our work here.
Now I have
Hi,
readability might be a concern but it's not the only criteria.
a) Do you need to trace intermediate results ? Then you need a
binding so you do not redo the work twice (presumably, I exclude memoized
functions here). Of course if the code has some side effects, the choice
is
Choose functions over macros when you can write an equivalent function.
I use macros when:
a) I have a repetitive pattern in the code that cannot be easily turned
into a function (too much context to pass as args to a function).
You can then hide a binding form in the macro to refer to the
Hi everyone,
I have been banging my head on the walls for a few hours now and really cannot
figure out the proper way to serve static files in a Compojure application
deployed on Tomcat or Glassfish...
Feeling pretty dumb in fact...
I tried to configure the default servlet to catch up requests
Count me out, pretty sure I'll need a drink by the time I arrive (21:00).
I like so much airplane travels, livestock receives more attention from their
carriers than airline passengers these days. Meuh !
Luc P.
Ryan Waters ryan.or...@gmail.com wrote ..
I probably wouldn't be able to show up
This is a more recent tutorial than what I had in my hands up to now
so I'll work on it tonight and look at the example app closely.
Thank you
Luc P.
Linus Ericsson oscarlinuserics...@gmail.com wrote ..
This tutorial covers the subject pretty well, I assume you've already read
it.
Hu ? What party ? Where ? When ?
Luc
Seth seth.schroe...@gmail.com wrote ..
What's this about an after party?
On Oct 18, 5:59 pm, Eric Lavigne lavigne.e...@gmail.com wrote:
Hey Conj goers,
I'm scheduled to arrive around 6:30, and after I check in am planning
to spend the rest of
No email received but just got one :)))
Luc P.
Eric Lavigne lavigne.e...@gmail.com wrote ..
What's this about an after party?
I received an email today at 1:22pm with the following link, but when
I tried to register at ~4pm it said sold out. More recently, tickets
became available again
Good to know... is this written somewhere ? I looked at Clojars yesterday
but did not find anything...
Luc P.
Saul Hazledine shaz...@gmail.com wrote ..
On Oct 13, 5:31 am, lprefonta...@softaddicts.ca wrote:
As far a publishing to Clojars, I do not know the policy.
Uploading various jars
a) Assuming all the dependencies are published in a maven repo out there:
If you put all your deps in project.clj, the pom.xml file generated by
leiningen will reference all of them as dependencies to your own lib.
You only need to publish your own library and the pom.xml to Clojars.
Normally the people maintaining the Minim project should publish their
stuff in a maven public repo. There are the ones in control of their
releases.
As far a publishing to Clojars, I do not know the policy.
Uploading various jars maintained by other teams not involved in
Clojure may pollute the
(:use [clojure.contrib.def])
(defvar- x ...)
A bit shorter than writing the meta-data by hand.
Def provides a number of other interesting shortcuts. Have a look at
def.clj in contrib.
I prefer to keep things private and avoid cluttering the use
clause with a long :only list. I use :only only
We use common logging with a thin Clojure layer around it. It allows us to
have different behaviors in dev pre-prod and production. We avoid the hassle
of configuring log4j in dev.
The default implementation (simple logging) is more than enough most of the
time.
In prod, we specify the log4j
The install task publishes to your local repo. Did you check
$HOME/.m2/repository to see if your helloworld library is there ?
You should find the jar and the pom.xml after running the install task.
Make sure the names are matching between your library POM and your
reference in your project.clj
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
return
Adam Burry abu...@gmail.com wrote ..
On Sep 9, 5:06 pm, alux alu...@googlemail.com 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
alux alu...@googlemail.com wrote ..
Interesting discussion!
I think about taking some of the topics into separate threads. Will
see, I'm a bit under project pressure. Wont tell you the language ;(
But, @Luc
pushing the advantage of Lisp
macros to the forefront is not obvious if the
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
return code from the compile task but then ended up with other problems
in the jar task.
I want to revert to 1.3.0 for a few days. Any idea about
Hi,
My main motivation to get away from Java as much as possible was the code
size. I was tired of having to write tons of code lines for what I considered
mundane things. Using wizards was not satisfactory to me. The generated code
size is significant and still it has to be maintained either by
alux alu...@googlemail.com wrote ..
Hello Luc,
what you say is of course completely true. Nevertheless it seems true
for Scala too. And now I come with a new language again. The curious
people in my team (well, or its the one with enough spare time :)
already had some look into Scala, and I
Hi Cameron,
Use def or defvar (if you use contrib.def) to create an instance of *macros*.
Declare is used for forward references (when you reference something
before declaring it) so the compiler knows that your code is sane but it does
not define anything by itself.
Yes, it may look a bit
I am a bit puzzled, I did a quick test and rebinding using a declare
should work (outside of your sample code). I have a reminiscence of a
similar problem I encountered before version 1.0 and used a def to solve my
problem at the time.
But the small test I just made with 1.2 is working.
There's
Booked... for technical reasons (bought a package flight + hotel through
expedia.ca), I'll be a staying at the nearby Hyatt hotel.
I had no other choice to be there since I argued loudly for a central location
for this event :)))
See you there all.
Luc P.
--
You received this message because
Fine,
I'll post entire project in a tar file this week end and will come back with
the URL before Sunday night. Need to complete urgent work in the garden today :)
Luc P.
Phil Hagelberg p...@hagelb.org wrote ..
On Fri, Aug 27, 2010 at 8:06 PM, lprefonta...@softaddicts.ca wrote:
I got it
Hi Phil,
there's a tar file at this url with the entire project skeleton:
http://cid-0bd9c1ec7356c53b.office.live.com/browse.aspx/lein-our-classes-only-0.0.1-SNAPSHOT?Bsrc=GetSharingLinkBpub=SDX.Docs
I added a README file. There is a small twist when building the target.
For those having the
I'll try it today and let you know by the end of today if I can
manage it :)
Luc P.
Phil Hagelberg p...@hagelb.org wrote ..
On Thu, Aug 26, 2010 at 5:59 PM, lprefonta...@softaddicts.ca wrote:
Instead I decided to experiment a Leiningen plug in, sauberjar to create the
target only with the
Hi Phil,
I got it working with the our-classe-only plug-in.
I tested it on my brain damaged project and it kept only the class files
for which a name space exists in the source folder. The target is now
cleaned up of any external class dependencies.
Now, if others need this what do you suggest ?
I read the ticket on Assembla and found it risky to try to implement the
patch.
Instead I decided to experiment a Leiningen plug in, sauberjar to create the
target only with the class files and only the ones for which there is a
corresponding source file in the source folder. To start this
Hi all,
We are completing the migration to clojure and contrib 1.2.
I am working on the packaging this week using leinigen 1.3 for acceptance
tests.
I download artifacts from Clojars and other maven repos using our archiva
server here.
I have a problem that I do not understand yet (slowly
We use archiva to proxy accesses to external repos (central, clojar, ...)
Very simple to deploy and to use and it does the job.
We looked at nexus but found it more complex to use for our limited
needs.
I use an instance on my laptop to pull what I need from our central location
and keep it in
+1,
auto loading is simple and if performance becomes an issue, an explicit
list of hooks would solve this issue. I would however leave auto loading by
default. We have a couple of hundred jar dependencies so speed for us is
an issue but auto loading seems to me a decent default for beginners,
I like magic, life is so complicated these days :)))
Luc P.
Phil Hagelberg p...@hagelb.org wrote ..
On Fri, Jul 30, 2010 at 8:03 AM, lprefonta...@softaddicts.ca wrote:
+1,
auto loading is simple and if performance becomes an issue, an explicit
list of hooks would solve this issue. I
We worked on it but realize at some point that it involved many
redefinitions of some parts of the Clojure runtime in a TIM.
And this had to be maintainefd while Clojure evolved.
We opted instead to share stuff using Java classes from Clojure rather than
directly in Clojure.
However as Clojure
Hmm.. I would give it a try for a critical app.
We have sever apps in Clojure running for months non-stop now without
unscheduled down time. Clojure has not been a source of problems, we
had more problems with the customer networks and other site specific
conditions.
We run redundant components
Same story here...
Dictatorship has definitively some value :)))
Luc P.
Sedit qui timuit ne non succederet.
Wilson MacGyver wmacgy...@gmail.com wrote ..
my story isn't a very interesting one. I simply told everyone on the team to
learn it, because we are going to use it :)
On Tue, Jul 6,
I never said we should not provides ways to tune code and get higher throughput
or arbitrary sized numbers. There has to be a path to satisfies those needs.
The stuff that was proposed on this thread (specialized ops, ...) should allow
people to tune their code if they require to do so.
I said
Welcome to the club of production ready apps in Clojure :)))
I see a bunch of opportunities for this kind of service in the medical
field especially when you get that image to text stuff in play.
Our customers have walls filled of medical record files and getting these in
some form of
I read the explanation on how they compute their charts.
I do not see why a Cobol or Fortran programmer would query the Web for
references on a regular basis.
What can be the significance of computing references on the Web about older
languages that do not evolve too much but that have a large
We are willing to put some time into this at our end.
We are in the process of replacing our Java desktop apps by Clojure apps.
Removing Java code is a mid-term goal that we want to keep in our scope
as we move on.
Anything to reduce code size is a welcomed.
How and when do we start this ?
Luc
Antony Blakey antony.bla...@gmail.com wrote ..
On 31/05/2010, at 11:13 AM, Marc Spitzer wrote:
I actually primarily do not care about mac or windows, personally or
professionally. Also keep in mind that one of the selling points of
clojure is that it runs where *Java* runs not mac and
Mike Meyer mwm-keyword-googlegroups.620...@mired.org wrote ..
On Mon, 31 May 2010 10:53:45 +0930
Antony Blakey antony.bla...@gmail.com wrote:
On 31/05/2010, at 10:44 AM, Marc Spitzer wrote:
also lets not forget about LD_LIBRARY_PATH issues,
No Mac or Windows user would encounter
Antony Blakey antony.bla...@gmail.com wrote ..
I doubt this subthread is of any use to the OP at this point.
I run a software business, I generally look at product decisions in terms
of cost/benefits from end to end over time not just looking solely at a
specific item and specific time frame.
Hi all,
it's not that I want to put pressure on anyone here but there has been a number
of discussions about the 1.2 release and I was wondering what's the horizon for
a first release ?
We are still in prod with 1.0 but some are salivating about some of the features
of 1.2. We did not move to
Application programming is exactly what we do with Clojure,
we are not using it in a bubble, it's there to implement all
the complex logic we need.
We use over 130 jars (Spring,...) and we use them from both Clojure and
some Java components. We are replacing with Clojure code
the Java high
I agree about consultants (these days it's not anymore an synonym for
expert) and the state of the market but...
If you write a new software product and
you are concerned with deadlines and speed in general, Java is not
the way to go anymore considering the pile of code you need to do
anything
Usually if has mustaches, 4 legs, oval shaped eyes, fur and
makes p ! prrr ! when I touch it, I call it a cat :)))
Most of my customers are accustomed to my crude language.
Since they have results when they deal with me compared to what
they get internally and from other suppliers, they
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