In Clojure the extra () around case and expr are skipped if no function call
is made. Have a look at clojure.org/api
-Ralf
On Thu, Dec 4, 2008 at 5:54 AM, harrison clarke <[EMAIL PROTECTED]> wrote:
> did cond change syntax?
>
> last i checked, it was
>
> (cond (case) (expr)
>
> (case) (e
i've added overloaded versions of reader and writer to
clojure.contrib.duck-stream. they can now take an additional string
argument named "encoding" so content can be read or written with the
specified encoding instead of default encoding. the semantics of the
original functions have not changed
I remember reading somewhere[1], that we can actually run ant from
maven. It just occurred to me, that we can build the pom with
groupId, artifactId and version, which actually uses ant for the
build. This way the builds will be identical and we'll only have to
update the version in the pom.
I
Maverick:~/site/clojure/clojure-contrib gj$ ant -Dclojure.jar=../
clojure/clojure.jar
Buildfile: build.xml
- boring stuff snipped
jar:
BUILD FAILED
/Users/gj/site/clojure/clojure-contrib/build.xml:62: The type
doesn't support the nested "path" element.
Total time: 1 second
This work
Or better even:
I think I'll have some more coffe :)
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Rich Hickey wrote:
>
>
> On Dec 3, 1:04 pm, Jeff Rose <[EMAIL PROTECTED]> wrote:
>> I've just pushed a template library for Clojure up onto github for
>> public use. You can find it here:
>>
>> http://github.com/rosejn/clj-libs/tree/master
>>
>> This library is based loosely on erb from Ruby, w
Are there any screencasts planned which will feature atoms? (I found
that the screencasts are an excellent way of learning clojure).
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Hi Jeff,
Don't forget that Velocity and Freemarker are also good candidates for
server side templating and with clojure's java integration a snap to
use, e.g. ...
(defn genSyntaxHiLight
[] (let [fmc (freeMarkerConfig)
tmpl (. fmc getTemplate "clojure.ftl")
map (clj-n
On Dec 5, 6:02 am, Rich Hickey <[EMAIL PROTECTED]> wrote:
> I've added a new reference type - atom.
>
> Docs here:
>
> http://clojure.org/atoms
>
> Feedback welcome,
>
> Rich
Are the following equivalent or is one recommended over
the other? The first (using atoms) is definitely more convenient
I'm working on some opengl code in clojure and I want to specify a
vertex. However, instead of passing in the three arguments it wants,
I want to specify a single vector of 3 elements. How can I do this?
Here's what it would normally look like (gl represents the current
opengl drawing context o
Hi,
On 5 Dez., 03:28, hitesh <[EMAIL PROTECTED]> wrote:
> (apply .glVertex3f gl point)
In general this is exactly how apply is used. However .foo
is special: "functions" starting with a dot are translated into
method calls on the first argument. So (.glVertex3f gl x y z)
translates is to (. gl g
hitesh wrote:
> I'm working on some opengl code in clojure and I want to specify a
> vertex. However, instead of passing in the three arguments it wants,
> I want to specify a single vector of 3 elements. How can I do this?
>
> Here's what it would normally look like (gl represents the current
>
On Dec 5, 5:51 am, bOR_ <[EMAIL PROTECTED]> wrote:
> Are there any screencasts planned which will feature atoms? (I found
> that the screencasts are an excellent way of learning clojure).
Screencasts are generally a side-effect of a speaking engagement. I
imagine next time I give a talk, I'll t
Perhaps the reason to not include it is that the utility of the
boolean? function is limited. Any value can be used where a clojure
boolean is expected - any non-nil value is true and nil is false.
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Hi,
I am learning Clojure by working thru Kent Dybvigs book in Scheme and
Clojure at the same time. A nice way to discover the differences ;-)
I wonder if the next definition is appropriate to test if something ia an
atom (as Scheme sees it):
(defn atom? [x]
(not (coll? x)))
Thx,
Arie
On Dec 5, 3:23 am, walterc <[EMAIL PROTECTED]> wrote:
> i've added overloaded versions of reader and writer to
> clojure.contrib.duck-stream. they can now take an additional string
> argument named "encoding" so content can be read or written with the
> specified encoding instead of default enc
Thanks for taking to time for such a detailed explanation Rich.
This makes things much clear. And thanks Chouser for the
pictorial representation.
Parth
On Dec 5, 6:24 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> On Dec 5, 5:51 am, bOR_ <[EMAIL PROTECTED]> wrote:
>
> > Are there any screencasts
On 2008-12-05, Juergen Gmeiner <[EMAIL PROTECTED]> wrote:
> BUILD FAILED
> /Users/gj/site/clojure/clojure-contrib/build.xml:62: The type
> doesn't support the nested "path" element.
That was added in Ant 1.7.0, released two years ago.
Stefan
--~--~-~--~~~---~--~---
This is indeed the definition used in the clojure.contrib.pred library:
http://github.com/kevinoneill/clojure-contrib/tree/master/src/clojure/contrib/pred.clj#L45
- Mark M.
On Fri, Dec 5, 2008 at 8:07 AM, Arie van Wingerden <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I am learning Clojure by working th
I don't think we ever really discussed the colors representing
anything specific. I always vaguely thought of them as earth and sky.
I'm really glad that people like the logo!
Cheers,
Tom
http://tomhickey.com
On Dec 4, 12:46 pm, "Howard Lewis Ship" <[EMAIL PROTECTED]> wrote:
> +1 on the Logo.
It seems like a pure efficiency optimization - used alone it doesn't
change semantics from dosync and alter over one ref.
It makes me feel wary. What if I changed my design and wanted to do
more in the same transaction? What if I later wanted to call a
function that uses it in the scope of a wide
On Dec 5, 8:50 am, Julian Morrison <[EMAIL PROTECTED]> wrote:
> It seems like a pure efficiency optimization - used alone it doesn't
> change semantics from dosync and alter over one ref.
>
> It makes me feel wary. What if I changed my design and wanted to do
> more in the same transaction? What
On Dec 5, 8:24 am, Rich Hickey <[EMAIL PROTECTED]> wrote:
> On Dec 5, 5:51 am, bOR_ <[EMAIL PROTECTED]> wrote:
>
> > Are there any screencasts planned which will feature atoms? (I found
> > that the screencasts are an excellent way of learning clojure).
>
> Screencasts are generally a side-effec
On Dec 5, 2008, at 8:50 AM, Mark McGranaghan wrote:
> This is indeed the definition used in the clojure.contrib.pred
> library:
> http://github.com/kevinoneill/clojure-contrib/tree/master/src/clojure/contrib/pred.clj#L45
That's true. However, with Clojure now having a specific meaning for
"
Hi,
On 5 Dez., 15:03, "Stephen C. Gilardi" <[EMAIL PROTECTED]> wrote:
> That's true. However, with Clojure now having a specific meaning for
> "atom" that's different from that of the larger Lisp world, I'm
> wondering if it would be a good idea to remove atom? from pred.clj.
>
> Feedback wel
On Dec 5, 9:03 am, "Stephen C. Gilardi" <[EMAIL PROTECTED]> wrote:
> On Dec 5, 2008, at 8:50 AM, Mark McGranaghan wrote:
>
> > This is indeed the definition used in the clojure.contrib.pred
> > library:
> >http://github.com/kevinoneill/clojure-contrib/tree/master/src/clojure...
>
> That's true.
On Friday 05 December 2008 05:24, Rich Hickey wrote:
> On Dec 5, 5:51 am, bOR_ <[EMAIL PROTECTED]> wrote:
> > Are there any screencasts planned which will feature atoms? (I
> > found that the screencasts are an excellent way of learning
> > clojure).
>
> Screencasts are generally a side-effect of
On Thursday 04 December 2008 23:23, Meikel Brandmeyer wrote:
> Hi,
>
> On 5 Dez., 00:38, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> > ...
> ...
>
> > And am I mistaken in my reading of the API docs for (defmulti ...)
> > and (defmethod ...) or is there no accommodation in either for
> > doc-str
hitesh wrote:
> I'm working on some opengl code in clojure and I want to specify a
> vertex. However, instead of passing in the three arguments it wants,
> I want to specify a single vector of 3 elements. How can I do this?
>
> Here's what it would normally look like (gl represents the current
>
On Dec 5, 9:09 am, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> On Friday 05 December 2008 05:24, Rich Hickey wrote:
>
> > On Dec 5, 5:51 am, bOR_ <[EMAIL PROTECTED]> wrote:
> > > Are there any screencasts planned which will feature atoms? (I
> > > found that the screencasts are an excellent wa
On Friday 05 December 2008 06:33, Rich Hickey wrote:
> On Dec 5, 9:09 am, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> > ...
> >
> > Are you ever going to get out to the Silicon Valley area to give a
> > talk?
>
> I hope to get a slot at Java One in SF this spring.
Anything less pricey?
Maybe y
On Dec 4, 9:07 am, "don.aman" <[EMAIL PROTECTED]> wrote:
> Since we're being all high-level, it'd be good for a random function
> which allows us to specify the range of numbers, since % doesn't
> promise an even spread of probabilities (especially for large ranges).
Not sure if I understand th
Hi Mark,
didn't know about that. But I'm glad it appears to be okay then.
Arie
2008/12/5 Mark McGranaghan <[EMAIL PROTECTED]>
>
> This is indeed the definition used in the clojure.contrib.pred library:
>
> http://github.com/kevinoneill/clojure-contrib/tree/master/src/clojure/contrib/pred.clj#L4
Hi Rich,
right. But still I think Meikel has got a valid point that a function would
need to be defined for that.
I also wondered whether a kind of type? function would be appropriate.
So (type? 3) would return integer etc.
Arie
2008/12/5 Rich Hickey <[EMAIL PROTECTED]>
>
>
>
> On Dec 5, 9:03
Fixed. Thanks,
-Stuart Sierra
On Dec 5, 12:39 am, "Tchavdar Roussanov" <[EMAIL PROTECTED]> wrote:
> The attached patch fixes the compile error when in-case macro is used in
> different name space. The expanded code contains a private function from
> clojure.contrib.fcase name space.
>
> --Tchavda
On Dec 4, 7:09 pm, "Christian Vest Hansen" <[EMAIL PROTECTED]>
wrote:
> Ah, disregard that. I found the rules:
> http://shootout.alioth.debian.org/u32q/benchmark.php?test=binarytrees&lang=all#about
Yeah -- " this is an adaptation of a benchmark for testing GC so we
are interested in the whole tre
On Dec 4, 8:02 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> I've added a new reference type - atom.
I like it; it greatly simplifies a common use for Refs.
"Clojure. Sometimes you just need to mutate."
"Clojure. Mutate safely."
-Stuart Sierra
--~--~-~--~~~---~--~-
Google groups files section is having issues.
Here's 'reduction' as discussed in IRC, mostly written by Rich.
--Chouser
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On Dec 5, 9:07 am, Meikel Brandmeyer <[EMAIL PROTECTED]> wrote:
> Hi,
>
> On 5 Dez., 15:03, "Stephen C. Gilardi" <[EMAIL PROTECTED]> wrote:
>
> > That's true. However, with Clojure now having a specific meaning for
> > "atom" that's different from that of the larger Lisp world, I'm
> > wondering
On Dec 5, 10:28 am, "Arie van Wingerden" <[EMAIL PROTECTED]> wrote:
> Hi Rich,
>
> right. But still I think Meikel has got a valid point that a function would
> need to be defined for that.
>
> I also wondered whether a kind of type? function would be appropriate.
> So (type? 3) would return in
On Wednesday 03 December 2008 15:13, jim wrote:
> Continuing with the monad theme, I decided to implement monadic
> parsing in Clojure. Erik Meijer and Graham Hutton published a paper
> called "Monadic Parsing in Haskell" and I implemented the examples
> from that paper in Clojure. The code is a
On Fri, Dec 5, 2008 at 8:25 AM, MikeM <[EMAIL PROTECTED]> wrote:
> Perhaps the reason to not include it is that the utility of the
> boolean? function is limited. Any value can be used where a clojure
> boolean is expected - any non-nil value is true and nil is false.
But this isn't about looking
On Dec 5, 10:50 am, Chouser <[EMAIL PROTECTED]> wrote:
> Google groups files section is having issues.
> Here's 'reduction' as discussed in IRC, mostly written by Rich.
>
Attachments are preferred - thanks!
Rich
--~--~-~--~~~---~--~~
You received this message b
On Dec 4, 8:02 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> I've added a new reference type - atom.
> Feedback welcome,
A request, if it's possible: allow watchers to be set on atoms and
refs in addition to agents.
I'd like to experiment with "reactive" programming using the different
transactio
Hi,
I tried to use definitions which call each other, like so:
(defn is-odd? [n]
(if (= n 0)
false
(is-even? (- n 1
(defn is-even? [n]
(if (= n 0)
true
(is-odd? (- n 1
but obviously Clojure rejects this, saying:
Exception in thread
On Fri, Dec 5, 2008 at 11:01 AM, Stuart Sierra
<[EMAIL PROTECTED]>wrote:
>
> On Dec 4, 8:02 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> > I've added a new reference type - atom.
> > Feedback welcome,
>
> A request, if it's possible: allow watchers to be set on atoms and
> refs in addition to agen
On Friday 05 December 2008 08:00, Rich Hickey wrote:
> On Dec 5, 10:50 am, Chouser <[EMAIL PROTECTED]> wrote:
> > Google groups files section is having issues.
> > Here's 'reduction' as discussed in IRC, mostly written by Rich.
>
> Attachments are preferred - thanks!
It came through as an attachm
On Friday 05 December 2008 08:07, Arie van Wingerden wrote:
> Hi,
>
> I tried to use definitions which call each other, like so:
>
> (defn is-odd? [n]
> (if (= n 0)
> false
> (is-even? (- n 1
>
> (defn is-even? [n]
> (if (= n 0)
> true
> (is-
Hi Randall,
yes, I am very aware that it is not an efficient solution ;-)
It is only an exercise just to make (Scheme) students aware of the
possibilities of mutual definitions.
The assignment in Kent's book reads:
;;; Exercise 2.8.6.
;;; All of the recursive procedures shown so far have been dir
On Dec 5, 11:17 am, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> You can (def is-even?) before your (defn is-odd? ...), which will allow
> it to compile.
The recently-added "declare" is for just this purpose:
(declare is-even?)
-Stuart Sierra
--~--~-~--~~~---~--~
will do
On Dec 5, 9:33 pm, Rich Hickey <[EMAIL PROTECTED]> wrote:
> On Dec 5, 3:23 am, walterc <[EMAIL PROTECTED]> wrote:
>
> > i've added overloaded versions of reader and writer to
> > clojure.contrib.duck-stream. they can now take an additional string
> > argument named "encoding" so content
On Fri, Dec 5, 2008 at 10:50 AM, Chouser <[EMAIL PROTECTED]> wrote:
> Google groups files section is having issues.
> Here's 'reduction' as discussed in IRC, mostly written by Rich.
I messed it up anyway -- tried to use if-let too early.
Try this patch instead.
--Chouser
--~--~-~--~~
Hi,
Am 05.12.2008 um 14:40 schrieb Stefan Bodewig:
BUILD FAILED
/Users/gj/site/clojure/clojure-contrib/build.xml:62: The type
doesn't support the nested "path" element.
That was added in Ant 1.7.0, released two years ago.
Hmmm... For me the path element works and I have an ant 1.7.0...
Any
Hi,
Am 04.12.2008 um 10:44 schrieb Meikel Brandmeyer:
I almost whipped this up yesterday, but I got sidetracked thinking
about how best to provide a feature like Scheme's cond's =>. Do you
know it? It feeds the value of the test to the fn on the rhs of the
clause. It can be useful.
It seems my
Ah, yes! That's defenitely more elegant.
Thx,
Arie
2008/12/5 Stuart Sierra <[EMAIL PROTECTED]>
>
> On Dec 5, 11:17 am, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> > You can (def is-even?) before your (defn is-odd? ...), which will allow
> > it to compile.
>
> The recently-added "declare" is
I think this is pretty useful, but I'm a noob and don't know better :)
I found myself trying to use atoms and refs to start with rather than
taking a functional approach, maybe something like this is good in the
standard lib to emphasize a functional approach? Or maybe it exists
and I don't know i
I think the best solution is to use Ant to build, but:
- Include a pom.xml
- Build binary and source artifacts
- Use the Maven Ant Tasks to deploy the artifacts to a local (for
snapshots) or remove (for final builds) repository
Also, I think if the Java code was published, along with Javadoc, we
I started to play with cond-let in the contrib.cond package and got an
unexpected error:
user=> (cond-let [x (zero? 0)] (println "hello world"))
java.lang.Exception: Unsupported binding form: (zero? 0) (NO_SOURCE_FILE:11)
user=> (cond-let x (zero? 0) (println "hello world"))
hello world
Maybe it
I'm continuing to try to suss this out, so I decided to run with a
memory profiler. I'm seeing tens of thousands of lazy conses
accounting for hundreds of megabytes of memory, which perhaps implies
I'm holding on to a reference to them somewhere, but I just don't see
how, since as I showed above,
On Oct 17, 6:01 pm, Luc Prefontaine <[EMAIL PROTECTED]>
wrote:
> I am not very far from tackling this issue. In our bus messaging system,
> we are using Terracotta with some Java components
> and it's a matter of weeks before we start to investigate how we can
> bridge Clojure and Terracotta.
>
On Dec 5, 2008, at 1:33 PM, Brian Doyle wrote:
> I started to play with cond-let in the contrib.cond package and got an
> unexpected error:
>
> user=> (cond-let [x (zero? 0)] (println "hello world"))
> java.lang.Exception: Unsupported binding form: (zero? 0)
> (NO_SOURCE_FILE:11)
I updated co
My operating theory was that the anonymous function being used by
filter was closing over both parameters to the enclosing function, but
making a simple modification to avoid that didn't seem to address the
problem.
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We just started to look at the issue. Got late in the user acceptance
tests because of the radiology equipment supplier
is dragging it's feet.
I feel we will start before Xmas to put together a prototype.
I really want this to come to life because we could use cooperative
Clojure instances on our
So, earlier, I asked how atoms differ from using commute on refs.
It sounds like the answer is that if you use atoms in a larger
transaction, then as soon as the atom set is encountered, it actually
changes instantly, so if you rollback, and do the transaction again,
it's already been set, and wi
I'd like to submit a new tracing library to clojure.contrib. Please
try it out and let me know if it is suitable.
The existing clojure.contrib.trace macros allow you to explicitly
trace any expression or redefine a function with deftrace so that it
is traced. But deftrace doesn't work with functi
Correction: http://paste.lisp.org/display/71656
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The most useful predicates that were once defined in
clojure.contrib.pred are now defined in clojure.core. It's currently
only a shadow of its former self and should perhaps be retired.
Is anyone relying on what remains in clojure.contrib.pred?
Is there any objection to me deleting it from cl
The memory profiler says that the following object is a GC root which
is holding onto the collection being passed into the filter call:
clojure.core$filter__3364$fn__3367
I'm not familiar enough with clojure's internals to speculate about
what that means, beyond what I've already mentioned previ
My setup is here:
http://bc.tech.coop/blog/081205.html
What does your Clojure Emacs setup look like?
--
Bill Clementson
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On Dec 4, 12:07 am, "don.aman" <[EMAIL PROTECTED]> wrote:
> Since we're being all high-level, it'd be good for a random function
> which allows us to specify the range of numbers, since % doesn't
> promise an even spread of probabilities (especially for large ranges).
Sure it does, as long as you
On Dec 5, 2008, at 12:41 PM, Meikel Brandmeyer wrote:
> Anyway I added the local.properties file as suggested and also
> changed the path to fileset for the issue above. It seems, that
> in classpath should also contain pathelements instead paths.
> So I changes this also.
>
> I'm not an ant guru
On Dec 3, 2008, at 11:39 AM, Randall R Schulz wrote:
> Perhaps Steve would consider applying them to making his fancy REPL
> more
> robust for terminal users?
I like the idea. If someone would like to work out the basics and post
some example code, I'll be happy to try to get it running in r
Hi,
I looked at the Clojure implementation of Huet's Zipper and it looks
great. I like how it delegates construction and dissection of the tree
structure to client-supplied functions so that it is generic w.r.t. to
any types (especially for me, pre-existing, non-Clojure Java types)
that can b
On Nov 21, 11:36 am, Brett Hoerner <[EMAIL PROTECTED]> wrote:
> I've watched a lot of Clojure videos now, and keep hearing Rich
> mention "Henry Baker's egal". Does someone have the actual paper
> title where Baker talks about this? I have an ACM subscription (and
> assume that's where I'd fin
On Nov 25, 4:16 am, "Alexander Kjeldaas"
<[EMAIL PROTECTED]> wrote:
> Which video does he mention this? I've been on the lookout for references to
> egal in new languages, so this might be a nice clojure surprise!
> Alexander
Around 40 minutes into this video, for one:
http://blip.tv/file/982823
Steve,
On Friday 05 December 2008 14:45, Stephen C. Gilardi wrote:
> On Dec 3, 2008, at 11:39 AM, Randall R Schulz wrote:
> > Perhaps Steve would consider applying them to making his fancy REPL
> > more
> > robust for terminal users?
>
> I like the idea. If someone would like to work out the basi
On Friday 05 December 2008 14:57, Randall R Schulz wrote:
> Steve,
>
> On Friday 05 December 2008 14:45, Stephen C. Gilardi wrote:
> > On Dec 3, 2008, at 11:39 AM, Randall R Schulz wrote:
> > > Perhaps Steve would consider applying them to making his fancy
> > > REPL more
> > > robust for terminal
Hi,
I make pretty extensive use of nested classes
(most significantly Enum types).
I was wondering if it might be a good idea to
allow "dot" resolution to find such types.
E.g.:
user=> tau.run.TSEvent.TSEKind
java.lang.ClassNotFoundException: tau.run.TSEvent.TSEKind (repl-1:7)
user=> tau.run
On Fri, Dec 5, 2008 at 11:07 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
>
> I'm working on that. It has utility even outside traditional reactive
> contexts, in moving the imperative part of your logic outside of your state
> transformation function. I think it's a good model.
>
> Chouser recentl
Nice blog entry :)
My setup tends to mirror yours esp. as I've culled most of it from
your blog over the years...
Most of my startup scripts are modified versions of those you've
shared elsewhere.
I don't segment it out quite so much as it makes for transporting
directory trees difficult, and my
Third time's charm? The previous versions of 'reduction' returned nil
for empty collection when no init was given. This version follows
'reduce' more closely, calling the given function with no arguments:
user=> (reduction + [])
(0)
--Chouser
--~--~-~--~~~---~--~---
On Dec 5, 4:59 pm, Paul Mooser <[EMAIL PROTECTED]> wrote:
> The memory profiler says that the following object is a GC root which
> is holding onto the collection being passed into the filter call:
>
> clojure.core$filter__3364$fn__3367
That class should be the instance of the anonymous fn you d
Meikel & Jeff,
Thank you. That really helped me get over the current hump. But as I
encounter more, I'm realizing I need to learn a lot more about the
Java interop.
Thanks,
- Hitesh
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On Fri, Dec 5, 2008 at 9:55 PM, Chouser <[EMAIL PROTECTED]> wrote:
> Third time's charm?
Apparently not. Previous versions had a couple problems.
One was that when when no init was provided, the first element of the
collection was not emitted by itself. This is inconsistent with
Haskell's scan
How about this one? Same results as in my previous post. Still as
lazy as possible. Plus it's so cute!
(defn reduction
"Returns a lazy seq of the intermediate values of the reduction (as
per reduce) of coll by f, starting with init."
([f coll]
(if (seq coll)
(lazy-cons (first coll
Could you achieve this through a combination of clojure.zip/node and
get-in/assoc-in/update-in? Of course the missing piece is going back
from nodes to locs.
-- Nathan
On Dec 5, 2:54 pm, Randall R Schulz <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I looked at the Clojure implementation of Huet's Zipper
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