Loom was indeed working on this, and it's a very nice library. One thing
that I particularly liked about Justin's design, was the ability to run a
graph algorithm without worrying about conforming to a particular graph
representation. See for example the bread first search function, here:
htt
Doesn't anyone use "not-empty"?
http://clojuredocs.org/clojure_core/clojure.core/not-empty
On Saturday, May 11, 2013 1:36:57 AM UTC-7, Nico Balestra wrote:
>
> I'm not sure this question has been asked already, but I really want to
> know the "principle" behind (not (empty? coll)) not being idi
That looks like so much fun; can't wait!
On Sunday, April 28, 2013 2:59:23 AM UTC-7, Tero Parviainen wrote:
>
> I've started putting together Clojure Cup, a global programming
> competition for Clojure and ClojureScript programmers. The idea is to have
> a 48-hour hackathon, similar to Rails Rum
Ring offers functionality for automatic reloading if you happen to be
developing a web app.
See here:
https://github.com/mmcgrana/ring/wiki/Interactive-Development
On Saturday, March 23, 2013 7:22:14 AM UTC-7, Oskar Kvist wrote:
>
> Hi!
>
> I saw this video http://www.youtube.com/watch?v=BES9
I really like this idea -- I think there's a need for a dedicated matrix
computation library in clojure. I really like the idea of having matrix
operations implemented in clojure (I think that you have this in
persistent_vector.clj) but also being able to call on java libraries.
On Saturday,
maybe http://commons.apache.org/math/apidocs/index.html will help?
- lk
On Jun 10, 2012 7:09 AM, "David Jacobs" wrote:
> Thanks! That section of Incanter must be new, I haven't seen it till now.
> Will check it out and report back.
>
>
> On Friday, June 8, 2012 at 7:15 AM, Lars Nilsson wrote:
>
what you want.
On Oct 12, 12:06 pm, Rob Lachlan wrote:
> Many of the links off of the main page are ajax. I don't think that
> wget can scrape that very easily.
>
> On Oct 12, 11:10 am, Tassilo Horn wrote:
>
>
>
>
>
>
>
> > jingguo writes:
>
>
Many of the links off of the main page are ajax. I don't think that
wget can scrape that very easily.
On Oct 12, 11:10 am, Tassilo Horn wrote:
> jingguo writes:
>
> Hi!
>
> > When programming in Clojure, I use the Reference documentation on
> > clojure.org a lot. But my network condition is hor
Just FYI I ended up using joda time in a project and it seemed to be a
good immutable match for clojure
http://joda-time.sourceforge.net/
- Lachlan
On 30 June 2011 06:42, Islon Scherer wrote:
> Thanks for the critic Laurent.
> set-date is not destructive, it creates a new date and retu
Using map-indexed:
(defn f [xs] (every? true? (map-indexed #(= (inc %1) %2) xs)))
On Jul 1, 12:28 pm, ".Bill Smith" wrote:
> I want a concise function that, given an arbitrary length sequence,
> determines whether the sequence is of consecutive integers starting with
> one. So:
>
> (f [1 2 3]
I'm curious about this as well, because of the ICFP programming
contest.
The contest organizers are soliciting requests for Debian packages to
be
installed on the contest environment. I don't suppose that this is
the
reason that you're asking?
On May 24, 9:41 pm, Phil Hagelberg wrote:
> It looks
#x27; when after much
searching it turns out i've got some function arguments around the
wrong way :)
Cheers,
- Lachlan
On 19 May 2011 11:17, Ken Wesson wrote:
> On Wed, May 18, 2011 at 7:19 PM, Lachlan wrote:
>> A further example of this proxy method not working would be tryin
ist$EmptyList does not.
It seems to work nicely with clojure.lang.PersistentArrayMap, so this
kind of thing works
(.dosomething (proxy [clojure.lang.PersistentArrayMap user.A] []
(dosomething [] (println (:akey this)
-> nil
(.dosomething (proxy [clojure.lang.PersistentArrayMap user.A]
[(into-array Object [:akey :
The servlet interface includes the init method for this exact
purpose. In java, this would be used by subclassing one of the
abstract servlet classes, and filling in the init method with whatever
initialization you need. Or by implementing the servlet interface
directly.
>From the javadoc, the i
It's not free.
(defn set
"Returns a set of the distinct elements of coll."
{:added "1.0"}
[coll] (clojure.lang.PersistentHashSet/create ^clojure.lang.ISeq
(seq coll)))
It seems to go element by element, irrespective of whether it was
given a hashset.
Rob
On Oct 18, 9:43 pm, Phil Hagelberg
your point that we shouldn't count on the current behaviour
continuing.
Rob
On Oct 18, 9:24 pm, Phil Hagelberg wrote:
> On Mon, Oct 18, 2010 at 3:02 PM, Rob Lachlan wrote:
> > There seems to be a discrepancy between what keyword names are
> > supposed to be allowed, according to
There seems to be a discrepancy between what keyword names are
supposed to be allowed, according to the reader documentation, and
which the reader actually allows. For instance, periods are supposed
to be disallowed in keyword names, and only one forward slash allowed,
but no errors are thrown at
a patch for.
>
> Rich, can you check and see if CAs have arrived from Rob Lachlan and Michał
> Marczyk?
>
> Stu
>
>
>
> > Made a ticket for this here (including the simple diagnosis):
>
> >https://www.assembla.com/spaces/clojure/support/tickets/406-typo-in
>
> +1 if you make the function not just for vector but for any seqs. That way
> of we need special BioSeqs someday...
Yes, I concur. I think that the default in-memory data format for
(DNA, RNA, Protein sequences) should be a vector, but that the
functions should take sequences. Mind you in some
The clojure way seems to be to do as much as possible with functions
on raw (immutable) data, rather than building up object systems. The
sequence is already one of clojure's primary abstractions, and it may
not always *need* to wrapped in something like defrecord. (Though for
some applications,
ill worked,
because it used to work just fine.
Rob
On Jun 19, 8:22 pm, Mike Meyer wrote:
> "Rob Lachlan" wrote:
> >Actually, Mike, your two functions work just fine. (Equal branch).
> >Mind you I checked that out over two hours ago, so this information
> >might be out
without getting
> bored though.
>
> -- Aaron
>
>
>
> On Sat, Jun 19, 2010 at 10:19 PM, Rob Lachlan wrote:
> > Actually, Mike, your two functions work just fine. (Equal branch).
> > Mind you I checked that out over two hours ago, so this information
> > m
Actually, Mike, your two functions work just fine. (Equal branch).
Mind you I checked that out over two hours ago, so this information
might be out of date.
Rob
On Jun 19, 6:59 pm, Mike Meyer wrote:
> On Sat, 19 Jun 2010 20:40:13 -0400
>
> David Nolen wrote:
> > Mark and Mike you fail to addre
The main example for recur on the special forms page (http://
clojure.org/special_forms#Special%20Forms--(recur%20exprs*)) is:
(def factorial
(fn [n]
(loop [cnt n acc 1]
(if (zero? cnt)
acc
(recur (dec cnt) (* acc cnt))
I may not be be clojure jedi, but I've
I'll take a whack at it.
> 1. How come APersistentMap$KeySet doesn't implement IPersistentSet?
Because keys and vals are designed to return (lazy) sequences. More
important, these two functions return those two sequences in the same
order. The laziness avoids having to incur the overhead of cr
I was wondering whether putting a dot in a directory on the classpath
makes a difference. On OS X, the answer is no. Unfortunately, I
don't have a windows machine, so I can't check for certain what the
situation is there.
Another issue: I ignored case-sensitivity in my answer above. Are
windows
I think he retracted this post in a separate new thread not long after
posting this.
cheers
Rob
On Jun 18, 2:56 pm, "Heinz N. Gies" wrote:
> On Jun 18, 2010, at 18:48 , pleone wrote:
>
> > I ran this in a slime REPL on AQUAMACS with clojure 1.1. It appears to
> > be a bug. Am I mistaken?
>
> >
Whoops, that should read:
java -cp c:\clojure-contrib\clojure-contrib.jar;c:\clojure
\clojure.jar;c:
\projects.clj clojure.main
On Jun 18, 2:51 pm, Rob Lachlan wrote:
> have you tried starting with:
>
> c:\clojure-contrib\clojure-contrib.jar;c:\clojure\clojure.jar;c:
> \
have you tried starting with:
c:\clojure-contrib\clojure-contrib.jar;c:\clojure\clojure.jar;c:
\projects.clj clojure.main
On Jun 18, 2:00 pm, Mohammad Khan wrote:
> C:\Projects.clj>java -cp
> c:\clojure-contrib\clojure-contrib.jar;c:\clojure\clojure.jar clojure.main
> Clojure 1.1.0-alpha-SNAPSH
Ah -- well that makes sense then. Bravo!
Rob
On Jun 17, 2:15 pm, Rich Hickey wrote:
> On Jun 17, 5:10 pm, Rob Lachlan wrote:
>
> > I think the enhanced support for primitives is fantastic. I'm looking
> > forward to doing more numerical work in clojure.
>
>
I think the enhanced support for primitives is fantastic. I'm looking
forward to doing more numerical work in clojure.
Quibble: Using a multiple-recursive algorithm for calculating
fibonnaci values.
user> (defn fib-2 [n] (if (>= n 1)
(loop [i 0 f0 0 f1 1]
(
> Do I need any branches? What are the branches? I thought that when a
> branch was stable it would be merged back into master (if I'm using
> the right terms).
The master branch for clojure is the main development branch for 1.2
(someone correct me if I'm wrong). It's the one I'm using, and I'm
I like the reference counting idea, YD. I don't think that we want to
go that route, though, if underive will be called comparatively rarely
by most people. But it would be a good way to do it if that
performance were needed.
Rob
On Jun 15, 10:39 pm, YD wrote:
> Another apporach I think would
60 or so. For small hierarchies this would
> > be fine. If anyone were to make large
> > hierarchies which had to be modified efficiently, though, I think
> > something like in the first message would be required.
>
> > On Jun 15, 4:29 pm, Rob Lachlan wrote:
> >&
s this would
be fine. If anyone were to make large
hierarchies which had to be modified efficiently, though, I think
something like in the first message would be required.
On Jun 15, 4:29 pm, Rob Lachlan wrote:
> Oh God. What broken formatting. Sorry about that.
>
> On Jun 15, 4:2
Oh God. What broken formatting. Sorry about that.
On Jun 15, 4:24 pm, Rob Lachlan wrote:
> I think that the underive function for removing hierarchy
> relationships between keywords is broken. I'll illustrate with an
> example and describe what I think the problems are. I'
I think that the underive function for removing hierarchy
relationships between keywords is broken. I'll illustrate with an
example and describe what I think the problems are. I've got some
code for a function which (I hope!) performs underive correctly, and
I'd love it if people had a look.
Con
s Kjeldahl Nilsson
wrote:
> Weird - I installed the Cocoa build last night, and got everything set
> up via elpa including swank-clojure. Some local problem?
>
> Regards,
> Thomas Kjeldahl Nilsson
>
>
>
> On Sun, Jun 13, 2010 at 2:02 AM, Rob Lachlan wrote:
> > I
I agree that the cocoa builds are the nicest. But there is one
problem that I've had with them: I wasn't able to successfully install
swank-clojure through elpa from within that emacs. Curiously, I was
able to install it through elpa in aquamacs, and then I had no problem
using swank-clojure from
> for the persistent data.. well all this "laziness" and dinamic types, and on
> top of that immutability should not perform well in pure clojure
Why?
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To post to this group, send email to clojure@go
Ah. That makes sense, thanks very much.
Rob
On May 12, 10:36 pm, Harvey Hirst wrote:
> It's slow because it has to use reflection to determine the type.
> Use (set! *warn-on-reflection* true) and you'll see the warning.
>
> Try something like this and you'll see significantly faster results:
>
Is there some reason why accessing the values in a type (from deftype)
should be slower than for a record? The type seems to be very fast to
instantiate, but slow to access.
(I was just playing around, trying to get a feel for the relative
performance characteristics of types records and maps. )
am, David Nolen wrote:
> On Sun, Apr 18, 2010 at 1:49 PM, Rob Lachlan wrote:
>
> > For deeftype, has the syntax for field accessors changed too?
>
> > I can't get it to work:
>
> > user> (deftype someType [b f])
> > user.someType
> > user> (d
For deeftype, has the syntax for field accessors changed too?
I can't get it to work:
user> (deftype someType [b f])
user.someType
user> (def y (new someType 2 3))
#'user/y
user> (:b y)
nil
user> (:f y)
nil
defrecord works as expected, though.
On Apr 17, 6:16 pm, Andrew Stein wrote:
> (deftyp
I can't find it either. The closest thing seems to be the servlet
macro:
(definline servlet
"Create a servlet from a sequence of routes. Automatically updates
if
the routes binding is redefined."
[routes]
`(proxy [HttpServlet] []
(~'service [request# response#]
(request-handle
I've reverted to the setup that you listed, Ramakrishnan. I spent
quite a few hours trying to figure out how to use ELPA + the forked
slime + the new swank clojure, but failed miserably (despite the kind
assistance of Phil and others on another thread).
I would agree that it would be nice to have
-clojure, I get an error:
java.lang.ClassNotFoundException: swank.swank
And I can't find swank-clojure.jar anywhere on my system. Should I
have built that separately? Anyway, thanks very much for all your
help.
Rob
On Jan 7, 9:05 am, Phil Hagelberg wrote:
> Rob Lachlan writes:
> >
am, Phil Hagelberg wrote:
> Rob Lachlan writes:
> > I have src and test in the directory I'm passing in. The problem
> > however, seems to be on the emacs end. In the mini-buffer when I
> > enter in Project root: and press return, the cursor
> > just moves to t
stuck right at that spot.
On Jan 5, 11:01 pm, Konrad Hinsen wrote:
> On 06.01.2010, at 07:26, Rob Lachlan wrote:
>
> > but when I put it in .emacs, and invoked it, the function seemed to
> > get stuck. I'm asked in the mini-buffer for the project root, and I
> >
I've been trying to compile clojure files from emacs. The issue I run
into is of my own clj files not being found on the classpath. (If I'm
trying to compile a standalone file, which references only clojure
core, there's no problem. It's when I have multiple files, and I'm
trying to include a fi
ley wrote:
> 2009/12/31 Rob Lachlan :
>
> > About a year and a half ago, there was some discussion about having a
> > function that would enable some kind of bounded search on a sorted
> > Does this exist, currently? I haven't looked at the gory details of
>
>
gt; On Dec 30, 6:10 pm, Rob Lachlan wrote:
>
>
>
> > This would work, but would require iterating over the keys, for
> > something like O(n) performance. I'm hoping that we can do better,
> > since the keys are already in an ordered collection.
>
> > On De
I should have said: since the keys are already in a tree. If they
were in a linked list, I'd expect to have to iterate over most of the
list.
On Dec 30, 3:10 pm, Rob Lachlan wrote:
> This would work, but would require iterating over the keys, for
> something like O(n) performance.
f, too. Send me a note if you need more than
> this.
>
> Sean
>
> On Dec 30, 5:37 pm, Rob Lachlan wrote:
>
>
>
> > About a year and a half ago, there was some discussion about having a
> > function that would enable some kind of bounded search on a sorted
> > map:
Thanks alot guys!
On Dec 30, 1:41 pm, Raoul Duke wrote:
> p.p.s. i was using -alpha- and changed to -new- (and pulled today) and
> now i get a slightly different error. am i just flubbing the syntax in
> some way i can't see for the trees?!
>
> user=> (defprotocol P (foo [x]))
> P
> user=> (defty
About a year and a half ago, there was some discussion about having a
function that would enable some kind of bounded search on a sorted
map:
http://groups.google.com/group/clojure/browse_thread/thread/949cae6c085d3d39/65b4082085c19a60?q=
Does this exist, currently? I haven't looked at the gory
I'm also looking for some help on deftype, and rather than start
another thread, I thought I'd toss it in here. Basically, how do I
type hint for a deftype. For example, suppose I want a nested type,
something that looks like this:
(deftype A
[#^somePrimitive someField])
(deftype B
[#^
As, Patrick Sullivan, said, the built-in sorted-map guarantees that
the keys will be in order. I'm probably missing something here, but
wouldn't that fit the bill?
http://clojure.org/api#sorted-map
Rob Lachlan
On Aug 27, 12:35 pm, Howard Lewis Ship wrote:
> Is the order of
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