Some thoughts on really stupid things that have tripped me up:
- How do I exit Clojure - srsly
C-c
- Whatsa JVM - does this mean Clojure is really just Java with parens?
- Whatsa Classpath?
this answer presents the *ALL* important opportunity to mention that
*nix uses `:' to separate paths
I would propose, that the files are hosted where ever
they are hosted now with suitable labels with which
Clojure version they work. This works out of the box
with the least amount of trouble.
Meikel
In contrast to the monolithic GG Code repo or C*AN or git/hg/bzr.*hubs
I find that the
At the moment assert macro accepts only a single argument - a test. If
the test fails (is false), an exception is thrown. But the only
information available (until we have better introspection tools) is
the test _expression_. This causes problems when working on many items
that should satisfy an
It would be nice if someone updated the wiki with a new example.
I don't understand how the gen-class stuff is supposed to work.
Why doesn't the following work?
(gen-class
:name MyException
:extends [Exception])
(defn user-exception-test []
(try
(throw (new MyException msg: user
On Fri, Dec 19, 2008 at 2:41 AM, Christian Vest Hansen
karmazi...@gmail.com wrote:
All.
I think it would be nice if the doc-string was allowed (in addition to
current behavior) to immediately follow the params vector in the
various defsomethings.
To the best of my knowledge, such a change
On Thu, Dec 18, 2008 at 9:08 PM, Stuart Sierra
the.stuart.sie...@gmail.com wrote:
On Dec 18, 6:05 pm, Mark Volkmann r.mark.volkm...@gmail.com wrote:
If I understand correctly,
(are ( 1 2, 5 7))
is equivalent to
(is ( 1 2))
(is ( 5 7))
Not exactly. The first argument to are is a
On Fri, Dec 19, 2008 at 12:46 PM, Michael Wood esiot...@gmail.com wrote:
Where would it go when you have multiple parameter lists and bodies?
(defn blah ([a] (do-something-with a)) ([a b] (do-something-with a b)))
That case should be unchanged, and work as it does today.
--
Michael Wood
On Thu, Dec 18, 2008 at 5:26 PM, Meikel Brandmeyer m...@kotka.de wrote:
Hi,
I reworked my initial proposal according to the comments
of Rich. The syntax now looks as follows:
(condp predicate expr
test-expr result-expr
test-expr : result-expr
What is :? Is that just a keyword whose
Hi Mark,
On 19 Dez., 13:12, Mark Volkmann r.mark.volkm...@gmail.com wrote:
What is :? Is that just a keyword whose name is ?
It's exactly that: a keyword with the name .
I think adding more characters with special meaning
makes code harder to read, so I hope we don't add
more of these.
If you don't need this, you don't have to use it.
I feel very strongly that Clojure, and any programming language,
should avoid using this rationale when adding support for new syntax.
Just because a developer chooses not to use a particular feature
doesn't mean they don't have to understand
I'm learning Clojure by trying to implement some functions from Ruby
core/stdlib/ActiveSupport's core_ext.
The first one I wrote is groups-of (similar to ActiveSupport's
in_groups_of):
(defn groups-of
Returns coll in groups of x size, optionally padding any remaining
slots with specified
Not sure if the FAQ is the right place to put it, but I haven't seen
any mention of this gotcha which could really trip some people up:
http://w01fe.com/?p=32
Short version: hashing immutable Clojure collections that contain
mutable Java objects can lead to confusing results.
(Hi all, I'm new
Hello Mark,
On 19 Dez., 13:36, Mark Volkmann r.mark.volkm...@gmail.com wrote:
If you don't need this, you don't have to use it.
Ok. That was a stupid statement. But at least it is
not the rationale for including condp (in whatever
form).
I feel very strongly that Clojure, and any
On Fri, Dec 19, 2008 at 6:52 AM, Meikel Brandmeyer m...@kotka.de wrote:
Hello Mark,
On 19 Dez., 13:36, Mark Volkmann r.mark.volkm...@gmail.com wrote:
If you don't need this, you don't have to use it.
Ok. That was a stupid statement. But at least it is
not the rationale for including
Peter,
Great news!
On Friday 19 December 2008 05:36, Peter Wolf wrote:
For those who are following or helping my efforts (thank you), the
IntelliJ Clojure plugin code is now on GoogleCode. Enjoy!
http://code.google.com/p/clojure-intellij-plugin/source/browse/#svn/t
On Fri, Dec 19, 2008 at 1:02 PM, hosia...@gmail.com hosia...@gmail.com wrote:
I'm learning Clojure by trying to implement some functions from Ruby
core/stdlib/ActiveSupport's core_ext.
The first one I wrote is groups-of (similar to ActiveSupport's
in_groups_of):
(defn groups-of
Returns
While we are talking about assert: I recently wanted for assert to
return the value of the expression, so I could embed asserts inside a
Fact test and get detailed reporting about what failed.
I checked a few other functional languages and none of their asserts
return a value either. This
On Dec 19, 8:59 am, Michael Wood esiot...@gmail.com wrote:
On Fri, Dec 19, 2008 at 1:02 PM, hosia...@gmail.com hosia...@gmail.com
wrote:
I'm learning Clojure by trying to implement some functions from Ruby
core/stdlib/ActiveSupport's core_ext.
The first one I wrote is groups-of
On Fri, Dec 19, 2008 at 4:32 PM, Rich Hickey richhic...@gmail.com wrote:
On Dec 19, 8:59 am, Michael Wood esiot...@gmail.com wrote:
On Fri, Dec 19, 2008 at 1:02 PM, hosia...@gmail.com hosia...@gmail.com
wrote:
I'm learning Clojure by trying to implement some functions from Ruby
On Fri, Dec 19, 2008 at 4:35 PM, Michael Wood esiot...@gmail.com wrote:
On Fri, Dec 19, 2008 at 4:32 PM, Rich Hickey richhic...@gmail.com wrote:
On Dec 19, 8:59 am, Michael Wood esiot...@gmail.com wrote:
[...]
There is a function called partition in Clojure's core.clj that does
this, except
On Dec 19, 4:27 pm, Stuart Halloway stuart.hallo...@gmail.com wrote:
While we are talking about assert: I recently wanted for assert to
return the value of the expression, so I could embed asserts inside a
Fact test and get detailed reporting about what failed.
I checked a few other
Hi all,
I have made a small commit [1] to clojure-contrib that gets most of
clojure.contrib.test-clojure working again. Hopefully this will enable
people to contribute more tests. (J., evaluation.clj was more
complicated to fix so I have temporarily disabled it.)
I hope to be in the IRC
On Fri, Dec 19, 2008 at 9:37 AM, Michael Wood esiot...@gmail.com wrote:
On Fri, Dec 19, 2008 at 4:35 PM, Michael Wood esiot...@gmail.com wrote:
hmmm... if I do this:
user= (partition 2 1 (iterate inc 1)) (.printStackTrace *e)
it ends like this:
[...]
57) (587257 587258) (587258
Hi Meikel,
On Thu, Dec 18, 2008 at 11:18 PM, Meikel Brandmeyer m...@kotka.de wrote:
On 19 Dez., 02:10, bc billc...@gmail.com wrote:
For clojure-contrib, it would make sense to create a matching tarball
whenever a Clojure release occurs. For the other 3, it would be
necessary for someone to
On Fri, Dec 19, 2008 at 10:30 AM, Kevin Martin martink...@gmail.com wrote:
Thanks Rich! I'll keep an eye on the defect(shame there isn't a watch
feature on google code). Other than this little minor annoyance, the
new AOT changes are working great. Thanks for all the work, I'm
really
On Friday 19 December 2008 09:10, Cosmin Stejerean wrote:
On Fri, Dec 19, 2008 at 10:30 AM, Kevin Martin martink...@gmail.com
wrote:
Thanks Rich! I'll keep an eye on the defect(shame there isn't a
watch feature on google code). Other than this little minor
annoyance, the new AOT changes
Hi,
Am 19.12.2008 um 18:19 schrieb Randall R Schulz:
Have you been able to make it work? It doesn't for me, and I am logged
in. Is there a trick? Stuart H. managed to make it work somehow. He
said something about using Firebug to figure it out.
Starring works for me (Safari on Mac Windows).
On Dec 18, 7:18 pm, Mark McGranaghan mmcgr...@gmail.com wrote:
I've likewise though a fair bit about this, but haven't been able to
come up with a particularly satisfying solution.
One approach I've considered is a watcher-type system where
persistence is defined in terms of immutable
According to Paul Graham's On Lisp, macroexpanders should be purely
functional, and you should not count on how often a macro gets
expanded. This seems like a reasonable restriction for Clojure too.
However, Chouser posted an example that shows the expansion of proxy
does have a side
On Tue, Dec 16, 2008 at 1:15 PM, Scott Jaderholm jaderh...@gmail.com wrote:
I'm trying to use the sql contrib with Microsoft SQL Server Express 2005.
I've used the jTDS driver for SQL Server 2005 (not Express) without
any problems, so if you still have problems with the Microsoft driver
you may
I think it's a generally good idea for macros to be purely functional,
but it's not always a requirement. As long as Clojure remains
exclusively a compiler and not an interpreter (unlike some CL
implementations) I think it is safe to assume that macros will only
run at compile time.
-S
On Dec
I noticed this first with a project I'm working on, and verified that
it is happening as well with the temperature converter demo on the
clojure site.
After I run the file from within Slime, after a few seconds my Swing
gui stops responding, and the Repl as well. Apparently, the whole Java
I'm learning macros, and I've figured something out that works for
what I want to do but looks awfully weird. Is this a hacky mess
because I don't know the clean way to do it or an idiom I just need to
get used to?
I want a macro expansion to define some functions in the namespace of
the caller.
Hi Rich all,
While compiling Clojure, It seems that *compile-path* is being set to
the absolute path to classes within the Clojure source
distribution. That is:
unzip clojure_20081217.zip
cd clojure
java -jar clojure.jar
Clojure
user= *compile-path*
/Users/rich/dev/clojure/classes
And it
Hi,
Am 19.12.2008 um 21:25 schrieb John D. Hume:
(ns foo)
(defmacro defthing [s]
(let [thing-name 'thing]
`(def ~thing-name (format the %s thing ~s
Simply put 'thing directly into the syntax-quote:
(defmacro defthing
[s]
`(def ~'thing (format the %s thing ~s)))
But be sure to
Possibly related:
http://groups.google.com/group/clojure/browse_thread/thread/161d608ccb1e8b3d/76eadda70df674a4?lnk=gstq=swing+hang#76eadda70df674a4
Bill
On Dec 19, 2:18 pm, levand luke.vanderh...@gmail.com wrote:
I noticed this first with a project I'm working on, and verified that
it is
On Thu, Dec 18, 2008 at 12:56 PM, Phil Hagelberg technoma...@gmail.com wrote:
This was one of the most disorienting things I encountered when starting
with clojure. I'm used to codebases providing a bin/ directory or at
least a shell script to start from. It wouldn't be so bad if the java
CLI
Anyone have any ideas? I'm pretty confused as to what might be going
on. Some sort of deadlock in the thread pool that isn't allowing the
AWT event thread any cycles? I'm looking at the thread pool in JSwat
and I see a lot of Swank threads, but I can't tell exactly what's
going on.
I
On Tue, Dec 16, 2008 at 2:05 PM, Randall R Schulz rsch...@sonic.net wrote:
Does anyone have any recommendations?
I use WordPress on my site and like it a lot: does everything I need,
and then some I suspect.
wordpress.com will host your blog for free, I think.
Also blogger.com (owned by
Since sets are callable like functions, subset? can be written pretty
concisely:
user (defn subset? [a b] (every? b a))
It handles the empty set cases correctly and everything. Is this
already in clojure-contrib? Want it and its brethren superset? proper-
subset? proper-superset? in there?
I should note that this also works because of sets being seq-able.
Since they're callable, we can use b as the predicate in every?; since
they're seq-able we can use a as the coll in every?. Very cool!
On Dec 19, 1:46 pm, Andrew Baine andrew.ba...@gmail.com wrote:
Since sets are callable like
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Hash: SHA1
On 12/19/2008 04:23 PM, Tom Emerson wrote:
On Tue, Dec 16, 2008 at 2:05 PM, Randall R Schulz rsch...@sonic.net wrote:
Does anyone have any recommendations?
I use WordPress on my site and like it a lot: does everything I need,
and then some I
Konrad,
Glad to know we were on the same page about monad transformers.
That transformer was indeed a translation from the Haskell
implementation. Using 'with-monad' does clean it up.
I'll have to take a look at your implementation of m-bind.
I did prefer the conciseness and the fact that it
I've been using assoc-in, get-in, etc, to work with nested maps, but I
recently needed a dissoc-in to free up unneeded indexes and such. I
didn't see one, so does this look about right?
(defn dissoc-in [m keys]
(if (= (count keys) 1)
(dissoc m (first keys))
(let [k (last keys)
Am I mistaken, or is there currently no nice syntax for giving doc
strings to methods? Sure, I can do
(defmulti #^{:doc documentation} my-method my-dispatch-fn)
but for consistency with defn and defmacro it would be nice to have a
direct way to document multimethods. Even better would be a
Jason jawo...@berkeley.edu writes:
I'm in the same boat: I just set up my first blog yesterday so I could
post some gotchas i've found and experiments i've done with clojure.
I went the route David suggests: dreamhost.com has a special now, $10
for a domain and 6 months free hosting, and
Tom Emerson tremer...@gmail.com writes:
On Thu, Dec 18, 2008 at 12:56 PM, Phil Hagelberg technoma...@gmail.com
wrote:
This was one of the most disorienting things I encountered when starting
with clojure. I'm used to codebases providing a bin/ directory or at
least a shell script to start
I host my blog on Dreamhost, and it works great for static files, though
if you're looking to host actual clojure apps DH won't cut it.
Yeah, Java hosting seems like rather tricky business, since you
basically need dedicated RAM. I've heard slicehost is very good and
reasonably priced in that
Apart from being blasphemous - would it be a good idea to override
clojure.lang.Ref in Java land?
I want to create (children of?) refs in clojure that send an agent
when they change, so that I can create facilities to observe changes
to them. Creating a 'MyRef extends Ref' seems to be the
I host my blog on Dreamhost, and it works great for static files, though
if you're looking to host actual clojure apps DH won't cut it.
Yeah, Java hosting seems like rather tricky business, since you
basically need dedicated RAM. I've heard slicehost is very good and
reasonably priced in
Validators seem like an easy way to do it, I'll try that. Thanks
Chouser!
Afaik Rich only thinks about adding watchers to refs currently, and I
can't find it in the list:
http://code.google.com/p/clojure/issues/list?can=2q=colspec=ID+Type+Status+Priority+Reporter+Owner+Summarycells=tiles
So it
I have a strong dislike for the concept of TIMTOWTDI (There is more
than one way to do it .
This should be a guiding design goal for any core lisp devel. Get the
core right and TIMTOWTDI is a `side effect' of good design rather than
the inverse.
s_P
On Dec 19, 7:36 am, Mark Volkmann
This seems like a reasonable restriction for Clojure too.
Third rule. Macros break the rules. Don't place arbitrary
restrictions on rule breaking :P
s_P
On Dec 19, 2:05 pm, Stuart Halloway stuart.hallo...@gmail.com wrote:
According to Paul Graham's On Lisp, macroexpanders should be purely
Hans Hubner's BKNR framework for CL explores this in a very
interesting way - while relying on CLOS meta-object protocol the ideas
could prob. be extended to Clojure. With some ABCL interaction this
would make CL - Clojure || Clojure - CL interop possible at the JVM
level with persistence...
Hello, I am gearing up to write some swing code, specifically some
stuff where I want to use the grid bag layout system, and I remember
something I hated about java:
--c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 0.5;
c.gridx = 2;
c.gridy = 0;
--
You repeated c all over the place so you
Hi everyone,
I'm trying to get clojure-mode working under XEmacs and am having
troubles.
I managed to get it working under GNU Emacs with the following .emacs
file:
(setq inferior-lisp-program java -cp C:/clojure/trunk/clojure.jar
clojure.lang.Repl)
(add-to-list 'load-path C:/program
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