On Jul 8, 2011, at 1:19 AM, Ken Wesson wrote:
If your programming experience lies elsewhere, or you're new to
programming altogether, _insert something here_.
The last one is maybe the trickiest. Best might be a good text editor
for programming that isn't Emacs, combined with leiningen.
On Fri, Jul 8, 2011 at 2:19 AM, Lee Spector lspec...@hampshire.edu wrote:
Certainly true, and this is one of the other reasons that I taught with
Eclipse/CCW rather than an emacs setup last year. But with a well-configured
modern emacs some of this can be ameliorated; e.g. there are Mac
Looks very nice. You should consider supporting rsync for the upload
command.
On Jul 6, 10:36 pm, Damon Snyder drsny...@gmail.com wrote:
Hello,
I wanted to let everyone know about a tool I have been working on. I'm
calling it gantry (a type of crane that I see every day on my commute
on BART
Hello everybody,
find works on transient vector but not on transient map while get works on
both transient vector and map .. ?
bitvector.core (find {:a 1} :a)
[:a 1]
bitvector.core (find (transient {:a 1}) :a)
nil
bitvector.core (get (transient {:a 1}) :a)
1
bitvector.core (get
Disclosure: I only began learning/setting up Clojure about a week ago...
Despite putting a relatively sizeable chunk of time into it, I still don't
have what I would consider a pleasant working environment...
How about:
GETTING STARTED
snip
This would have been great - one canonical source
Is there a way to have multiple instances of Slime installed in Emacs in the
same time?
The problem I have is that there is official Slime git repository, and that
slime is used by all Common Lisp implementation.
Then there is slime used by swank-clojure, which is more than a year old
slime
Hi,
I don't know of any way to have different SLIMEs in one Emacs. In the past
I used to call Emacs with different init-files for that, but it's not nice.
However, given the differences between Clojure and CL an 'official' fork of
SLIME ('JIME', 'SLJME'? ;-) for Clojure might be the way to
I'm looking for a java/clojure developer for my small team at a Wall
Street bank. If interested, please reply to sender and we can discuss
details.
Thanks,
Michael
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*Recently the received wisdom has been: protocols are a low-level
implementation detail. Actual APIs should be built with normal functions
that call the protocol methods.*
I misspoke: This is not to say that protocols *cannot* be API functions, but
that protocols are not *necessarily* APIs, as
On Jul 8, 2011, at 2:39 AM, Ken Wesson wrote:
(with the downside of the emacs interface learning curve, to whatever extent
that can't be addressed via configuration)
That's not a downside, that's a pit full of sharks with lasers on
their heads, at least from your hypothetical newb's
On Jul 8, 6:19 am, Ken Wesson kwess...@gmail.com wrote:
On Fri, Jul 8, 2011 at 1:07 AM, Lee Spector lspec...@hampshire.edu wrote:
On Jul 7, 2011, at 7:29 PM, Sean Corfield wrote:
And yet the #1 FAQ we see on lists and reflected in blog posts is
about getting Clojure up and running... We
do not
expect to start hacking clojure in the morning and be productive
and accomplishing work in the afternoon of that same day
reality is cruel: http://norvig.com/21-days.html
but fair ... isn't it ?
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On Jul 8, 2011, at 10:29 AM, James Keats wrote:
May I also add the following caveat emptors:
- If you're new to programming, clojure will overwhelm you. Start with
something like python.
I disagree. This is a subject of religious debates that I don't want to get
into in detail, but FWIW this
Hi
When I run java -jar project-standalone.jar running swank server in
it on a remote PC.
Then when I open my remote *.clj file using tramp, connect to the
image with Emacs's M-x slime-connect - everything works well until I
try to go to the function definition (M . or M-x slime-edit-
I'm having a problem on Max OS X 10.6.8 where vagrant hangs setting up the
VM right after installing jark. It seems to just stop doing anything. I
initially thought that that meant it was completed but opening a new
terminal window and doing vagrant ssh brought me to a VM that had nothing
setup.
On Fri, Jul 8, 2011 at 4:29 PM, James Keats james.w.ke...@gmail.com wrote:
May I also add the following caveat emptors:
- If you're new to programming, clojure will overwhelm you. Start with
something like python.
I think most programming languages overwhelm you if you don't have any prior
I was using the latest VirtualBox (4.0.10) and it was complaining
about a version mismatch between Guest Additions Version: 4.0.6 and
VirtualBox Version: 4.0.10. So I switched to VirtualBox Version 4.0.6
instead and the output is below. It no longer complains about the
mismatch. I'm continuing to
I disagree. This is a subject of religious debates that I don't want to get
into in detail, but FWIW this educator thinks that Lisp is a perfectly
defensible first language and that Clojure can serve the purpose quite well
as long as installation and tooling doesn't make it ?unnecessarily
Lee Spector lspec...@hampshire.edu writes:
On Jul 8, 2011, at 2:39 AM, Ken Wesson wrote:
(with the downside of the emacs interface learning curve, to whatever
extent that can't be addressed via configuration)
That's not a downside, that's a pit full of sharks with lasers on
their heads,
There was a minor bug in the provisioning script that prevented the .emacs.d directory from being populated but a fix
has been pushed for that.
That being said, I also had the hang issue. I did the same as you; I did a vagrant ssh from a new terminal window and
everything worked. Also, after
On Jul 8, 2011, at 12:17 PM, Phil Hagelberg wrote:
Have you tried the Vagrant approach? It's a one-button
Emacs/Clojure/Leiningen hacking VM setup[1]:
I haven't, although I've been watching the list traffic on this. Now I see that
I must. I will!
Thanks,
-Lee
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You received this
On Fri, Jul 8, 2011 at 9:47 PM, Phil Hagelberg p...@hagelb.org wrote:
Have you tried the Vagrant approach? It's a one-button
Emacs/Clojure/Leiningen hacking VM setup[1]:
https://github.com/Seajure/emacs-clojure-vagrant
-Phil
[1] - provided you have virtualbox.
That is still not as easy
On Jul 8, 2011, at 12:38 PM, Vivek Khurana wrote:
That is still not as easy as python. Running VM is a bigger overhead...
There are different kinds of overhead. If the installation and setup of the VM
is simple and bullet proof then this is acceptable overhead for me.
On the other hand I
It looks like you haven't got enough privileges, try sudo gem install
vagrant
Jonathan
On Fri, Jul 8, 2011 at 6:58 PM, Lee Spector lspec...@hampshire.edu wrote:
On Jul 8, 2011, at 12:38 PM, Vivek Khurana wrote:
That is still not as easy as python. Running VM is a bigger overhead...
There
On Jul 8, 2011, at 1:02 PM, Jonathan Fischer Friberg wrote:
It looks like you haven't got enough privileges, try sudo gem install
vagrant
Thanks. That solved some of the problems (and I would suggest that sudo be
added to the vagrant readme instructions) but I still get:
ERROR: Error
2011/7/8 Lee Spector lspec...@hampshire.edu
ERROR: Error installing vagrant:
thor requires RubyGems version = 1.3.6
So I guess I need to track that down...
what does gem --version output?
To upgrade rubygems, use
[sudo] gem update --system
--
MK
http://github.com/michaelklishin
I think we need to be careful here about the association between Java
and Clojure. Sure, they run on the JVM, but that is their *only*
relationship (from a consumer's point of view) as far as I can see.
For me, after a decade+ of developing Enterprise Java (primarily web)
applications I am sick
When I tried bringing it down and back up, it restarted the whole process
over from scratch. Basically, vagrant halt seems to cause the entire VM to
disappear as if vagrant destroy was called. :-(
I'll try to re-get from git and see if it works better now.
On Fri, Jul 8, 2011 at 9:30 AM, Stan
On Jul 8, 4:30 pm, Lee Spector lspec...@hampshire.edu wrote:
On Jul 8, 2011, at 10:29 AM, James Keats wrote:
May I also add the following caveat emptors:
- If you're new to programming, clojure will overwhelm you. Start with
something like python.
I disagree. This is a subject of
On Fri, Jul 8, 2011 at 7:29 AM, James Keats james.w.ke...@gmail.com wrote:
- If you're new to programming, clojure will overwhelm you. Start with
something like python.
Totally disagree. Lisps have been many people's first introduction to
programming over several decades and it works extremely
I disagree. This is a subject of religious debates that I don't want to get
into in detail, but FWIW this educator thinks that Lisp is a perfectly
defensible first language and that Clojure can serve the purpose quite well
as long as installation and tooling
doesn't make it unnecessarily
I don't agree that clojure is, or should be seen as something entirely
different than java. If it weren't for java, clojure wouldn't have much use
at all.
When it comes to IDEs, I agree. I write all code in vim (for editing only),
and do the rest from the command line (meaning mostly leiningen).
Read my blog post (written a year ago; updated several times to ensure
it works with newer versions of Clojure and Leiningen):
http://corfield.org/blog/post.cfm/getting-started-with-clojure
Now replace clojure.org/getting_started with something like that and I
think most of the complaints
On Jul 8, 2011, at 1:24 PM, Michael Klishin wrote:
what does gem --version output?
It was 1.3.5.
To upgrade rubygems, use
[sudo] gem update --system
Thanks so much. I've now successfully upgraded rubygems and completed the sudo
gem install vagrant step without error.
I will take
If it weren't for McDonalds I wouldn't have such a large belly, but my
belly isn't McDonalds ;) I jest (obviously!), but I do think this is
a fundamental point. I (like a lot of others I expect) found Clojure
and Scala whilst looking for Java.next. I read a bit about Scala, and
part of its
*This isn't meant to start a flame-war!*
I am pretty convinced that I want to use Clojure as my primary tool
(in place of Java/Groovy Spring and Hibernate) in writing Enterprise
applications on the JVM. By Enterprise I mean that my solution has to
be very stable, maintainable by others, subject
I think we need to be careful here about the association between Java
and Clojure. Sure, they run on the JVM, but that is their *only*
relationship (from a consumer's point of view) as far as I can see.
Clojure != Java - different paradigms, different mindsets, different
beasts.
Read my blog post (written a year ago; updated several times to ensure
it works with newer versions of Clojure and Leiningen):
http://corfield.org/blog/post.cfm/getting-started-with-clojure
Now replace clojure.org/getting_started with something like that and I
think most of the complaints
Mailing my contributor agreement today so I can helpreally
excited!
May I just add that at the same level of prominence after the no
decisions beginner path, we might also put a tutorial on Web (via
Noir, perhaps?) and Incanter development? Those are two amazing
applications of
Lee Spector lspec...@hampshire.edu writes:
Thanks so much. I've now successfully upgraded rubygems and completed
the sudo gem install vagrant step without error.
I will take the next steps shortly.
Is this an okay place to make suggestions about the vagrant readme? In
addition to adding
On Jul 8, 7:14 pm, nchubrich nchubr...@gmail.com wrote:
I disagree. This is a subject of religious debates that I don't want to get
into in detail, but FWIW this educator thinks that Lisp is a perfectly
defensible first language and that Clojure can serve the purpose quite well
as
On Jul 8, 2011, at 2:13 PM, Sean Corfield wrote:
Now replace clojure.org/getting_started with something like that and I
think most of the complaints would go away. No one needs a fancy
editor / IDE setup to use Clojure - the key is just getting it
installed and then a REPL to experiment and a
Hi All,
I am battling with how to deal with the difference between Protocols
and Interfaces in a particular case.
Consider the following code:
(defrecord DomainTypeA []
SomeInternalProtocol
(foo [this] foo result)
clojure.lang.IFn
(invoke [this] invoke result))
This code works fine.
On Jul 8, 8:02 pm, Lee Spector lspec...@hampshire.edu wrote:
I'm with you 95% here, but I do think that this much editor fanciness is
needed to have a sane environment for coding lisp for anything more than a
few minutes: bracket-matching and language-aware auto-re-indenting. If
there's
On Jul 8, 2011, at 3:00 PM, Phil Hagelberg wrote:
Maybe a troubleshooting section at the bottom of the readme? Sounds
good to me; feel free to issue a pull request.
I don't have the expertise to write such a thing.
In other news, I've now done vagrant up in the directory containing the
Hi
I love Clojure ,but Clojure sucks a lot of memory and that frustrates
me !
I am looking forward to find a way to put mutability in my code the
same way i put immutable data structures.
For example imagine ~[ 1 2 3 4 ] to be mutable vector and every
semicolon that have this ~ in front to be
On Jun 16, 3:08 pm, Colin Yates colin.ya...@gmail.com wrote:
(newbie warning)
Our current solution is an OO implementation in Groovy and Java. We
have a (mutable) Project which has a DAG (directed acyclic graph).
This is stored as a set of nodes and edges. There are multiple
I love Clojure ,but Clojure sucks a lot of memory and that frustrates
me !
I seriously doubt the memory bloat is due to the immutable structures.
During a fast inner loop that is allocating tons of structures, you
may see a little memory bloat, but that's only until the GC catches
up. I'm
On Jul 8, 8:57 pm, James Keats james.w.ke...@gmail.com wrote:
On Jun 16, 3:08 pm, Colin Yates colin.ya...@gmail.com wrote:
(newbie warning)
Our current solution is an OO implementation in Groovy and Java. We
have a (mutable) Project which has a DAG (directed acyclic graph).
This is
On Fri, Jul 8, 2011 at 3:02 PM, Timothy Baldridge tbaldri...@gmail.com wrote:
I love Clojure ,but Clojure sucks a lot of memory and that frustrates
me !
In addition to all this, remember that GC's don't instantly free
memory. So if for a instance memory balloons up to 300MB, many times
the JVM
I love Clojure ,but Clojure sucks a lot of memory and that frustrates
me !
I am looking forward to find a way to put mutability in my code the
same way i put immutable data structures.
For example imagine ~[ 1 2 3 4 ] to be mutable vector and every
semicolon that have this ~ in front to be
Sorry ,I just guessed that the fault is in immutability
I read about for clojure performance tips
http://gnuvince.wordpress.com/2009/05/11/clojure-performance-tips/
but i feel it is not enough.
On Jul 8, 11:02 pm, Timothy Baldridge tbaldri...@gmail.com wrote:
I love Clojure ,but Clojure
On Fri, Jul 8, 2011 at 11:50 AM, Stuart Halloway
stuart.hallo...@gmail.com wrote:
Here's a possible plan:
1. Core will produce a smaller, up-to-date page
for clojure.org/getting_started. This page will do less, and will link out
prominently to the contributor wiki. Turnaround time on this:
Have you profiled your code to determine where the performance
bottlenecks really are?
In Java applications, even large amounts of transient memory usage are
not indicative of performance problems - that's kind of the point with
automatically managed memory and garbage collection systems...
Sean
The topic was also raised at
http://groups.google.com/group/swank-clojure/browse_thread/thread/6afd2f13ecf9e194#
Probably the reason it's not implemented is that slime-machine-
instance in slime.el depends on a call to (cl:machine-instance) which
is not part of Clojure.
I wonder if working with a
if only lisp had macros
On Fri, Jul 8, 2011 at 12:16 PM, David Jagoe davidja...@gmail.com wrote:
Hi All,
I am battling with how to deal with the difference between Protocols
and Interfaces in a particular case.
Consider the following code:
(defrecord DomainTypeA []
SomeInternalProtocol
On Fri, Jul 8, 2011 at 11:46 AM, Jonathan Fischer Friberg
odysso...@gmail.com wrote:
You probably don't mean an actual hello world program, but let's compare
them anyway.
python:
print hello world
clojure:
(print hello world)
Not that much harder, is it?
And probably slightly *easier*
On Fri, Jul 8, 2011 at 12:02 PM, Timothy Baldridge tbaldri...@gmail.com wrote:
As a quick compare...
Python:
python-pygame
Clojure:
JDK-lein-clojure-penumbra
If you download and install Eclipse or NetBeans they will install a
JDK by default, and if you then use their internal plugin browsers
Thanks I will try profiling the code
On Jul 9, 12:12 am, Sean Corfield seancorfi...@gmail.com wrote:
Have you profiled your code to determine where the performance
bottlenecks really are?
In Java applications, even large amounts of transient memory usage are
not indicative of performance
On Fri, Jul 8, 2011 at 12:38 PM, Vivek Khurana hiddenharm...@gmail.com wrote:
On Fri, Jul 8, 2011 at 9:47 PM, Phil Hagelberg p...@hagelb.org wrote:
Have you tried the Vagrant approach? It's a one-button
Emacs/Clojure/Leiningen hacking VM setup[1]:
On Jul 8, 2011, at 3:30 PM, James Keats wrote:
Sam Aaron's emacs setup with cake's swank is really really nice. It
could possibly be combined with a cheatsheet for emacs' most needed
keyboard shortcuts.
inc!
May I also add that I found remapping some keyboard keys quite useful
I'd
On Fri, Jul 8, 2011 at 2:23 PM, nchubrich nchubr...@gmail.com wrote:
Read my blog post (written a year ago; updated several times to ensure
it works with newer versions of Clojure and Leiningen):
http://corfield.org/blog/post.cfm/getting-started-with-clojure
Now replace
On Jul 8, 2011, at 6:23 PM, Ken Wesson wrote:
If you download and install Eclipse or NetBeans they will install a
JDK by default, and if you then use their internal plugin browsers to
find and install CCW resp. Enclojure, they will install Clojure 1.2.0
(last time I checked) for you and set
Hi all,
I have recently been watching a set of videos from O'Reilly on
MapReduce. The author of the series is using Python for all of the
examples, but, in an effort to use Clojure more, I've been following
along and writing my code in Clojure. When I implemented the mapper
function that he
On Fri, Jul 8, 2011 at 3:30 PM, James Keats james.w.ke...@gmail.com wrote:
May I also add that I found remapping some keyboard keys quite useful
for a sane emacs lisp editing experience. It gives me 3 ctrl keys on
the right and 3 ctrl keys on the left so I could basically use any of
my
On Fri, Jul 8, 2011 at 7:02 PM, Lee Spector lspec...@hampshire.edu wrote:
I think I said recently that several setups are about 95% the way to being
newbie-friendly, and while the missing 5% for emacs/lein is mostly in
installation/configuration the missing 5% for Eclipse is in project
On Fri, Jul 8, 2011 at 7:05 PM, Christopher vth...@gmail.com wrote:
;; mapper.clj
(use ['clojure.java.io :only '(reader)])
(use ['clojure.string :only '(split)])
(defn mapper [lines]
(doseq [line lines]
(doseq [word (split line #\s+)]
(println (str word \t1)
(mapper
2011/7/9 Ken Wesson kwess...@gmail.com
e.g. Python interpreter
Sorry, why does Clojure starter kit need to embed Python? I couldn't
figure it out from
a few recent posts.
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http://twitter.com/michaelklishin
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2011/7/9 Christopher vth...@gmail.com
% time cake run mapper.clj input.txt
real0m3.573s
user0m2.031s
sys 0m1.528s
These numbers include JVM startup overhead (which is significant compared to
Python startup overhead).
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On Fri, Jul 8, 2011 at 7:18 PM, Michael Klishin
michael.s.klis...@gmail.com wrote:
2011/7/9 Ken Wesson kwess...@gmail.com
e.g. Python interpreter
Sorry, why does Clojure starter kit need to embed Python? I couldn't
figure it out from
a few recent posts.
Leiningen is a script, and I thought
2011/7/9 Ken Wesson kwess...@gmail.com
Leiningen is a script, and I thought it might be a Python script.
On Windows, the interpreter won't typically already be installed
anyway -- at least, you can't count on it.
Ken,
Leiningen is not just a script. It is a Clojure application with a
On Jul 8, 2011, at 7:13 PM, Ken Wesson wrote:
My concern there is with newbies just getting their feet wet in
Clojure needing to hack a Clojure file in order to start learning how
to hack Clojure files. :)
Yeah, but it's a minimal copy this line and your library name goes here kind
of edit
Hi Michael,
Thanks for the comments, though, I want to point out that I'm using
cake to run the program which keeps an instance of the JVM spun up at
all times. That should remove the startup time, unless I am
misunderstanding how cake works. Also, the startup time should be
constant (say a few
On Jul 8, 4:17 pm, Ken Wesson kwess...@gmail.com wrote:
On Fri, Jul 8, 2011 at 7:05 PM, Christopher vth...@gmail.com wrote:
;; mapper.clj
(use ['clojure.java.io :only '(reader)])
(use ['clojure.string :only '(split)])
(defn mapper [lines]
(doseq [line lines]
(doseq [word (split
What I think Kevin meant to say was that you might consider using a macro.
If you have questions about specifics, please do reply. This group is here to
Help, and it would be a shame if a response like the previous one steered you
away from asking a follow-up.
Sent via mobile
On Jul 8, 2011,
Hi Ken,
Thanks for the comment. I tried what you suggested, but I am not
getting any reflection warnings. That said, comments like this are
exactly what I am looking for; I had no idea that you could turn on
checking for reflection issues. I'd love it if I could find a way to
speed this piece of
Hi Christopher,
I ran your code with only one modification, using the time macro to
measure the execution time of the mapper function itself:
(use ['clojure.java.io :only '(reader)])
(use ['clojure.string :only '(split)])
(defn mapper [lines]
(doseq [line lines]
(doseq [word (split line
Running a program like that with cake run is awful, use AOT:
(ns clj-play.mapper
(:use [clojure.java.io :only [reader]])
(:use [clojure.string :only [split]])
(:gen-class))
(defn mapper [lines]
(doseq [line lines]
(doseq [word (split line #\s+)]
(println (str word \t1)
Here's a very ugly low-level version just to show that it can be done:
(ns clj-play.mapper
(:use [clojure.java.io :only [reader]])
(:use [clojure.string :only [split]])
(:gen-class))
(set! *warn-on-reflection* true)
(defn mapper [^java.io.BufferedReader r ^java.io.OutputStreamWriter out]
Thanks Benny. I tried again without using cake and just compiling the
code into a jar and it does execute much better. I guess using the
cake run command as a way to avoid the JVM startup overhead isn't the
best option for writing highly performant code. I was kind of hoping
that after the first
Hi David,
Thanks for the comments and the code rewrite. This is excellent
information. I just tried it out on my own system and got the same
results. This is a really great example of how to optimize Clojure
code. I'm considering using Clojure for some more research-oriented
work where I will
JVM is very slow to start. Try measuring around your method calls instead.
Also try running it for a long enough time to see the JVM GC kick the butt
of python's GC...
On Fri, Jul 8, 2011 at 6:19 PM, Michael Klishin michael.s.klis...@gmail.com
wrote:
2011/7/9 Christopher vth...@gmail.com
%
Still no love. Same thing, only this time there wasn't even an empty
.emacs.d folder.
On Fri, Jul 8, 2011 at 10:51 AM, Joseph Jones darkdescend...@gmail.comwrote:
When I tried bringing it down and back up, it restarted the whole process
over from scratch. Basically, vagrant halt seems to cause
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