Per the doc, last is linear time, and the source doesn't check for reversible.
user= (source last)
(def
^{:arglists '([coll])
:doc Return the last item in coll, in linear time
:added 1.0}
last (fn last [s]
(if (next s)
(recur (next s))
(first s
unless i'm
Hi,
Am Freitag, 10. Juni 2011 06:49:41 UTC+2 schrieb Sunil Nandihalli:
as long as (reversible? of-whatever-collection) is true , last is almost a
constant time operation
In theory, but not in practice. last will always be O(N) in it's current
implementation. The only fast way to get the
ah sorry for that.. But it looks like I have grown very complacent about
clojure-functions doing the *right thing* .. my bad.
Sunil.
On Fri, Jun 10, 2011 at 12:06 PM, Meikel Brandmeyer m...@kotka.de wrote:
Hi,
Am Freitag, 10. Juni 2011 06:49:41 UTC+2 schrieb Sunil Nandihalli:
as long as
Hi Thomas,
You need to execute this line:
(dosync (ref-set location (read-json (slurp url
every time you want to re-query the string.
To do this periodically you could do something like this [1]:
(import '(java.util TimerTask Timer))
(let [task (proxy [TimerTask] []
(run [] (dosync
It seems that when i get messages saying that You tripped the alarm!
last is bad! or You tripped the alarm! nth is bad!,
I'm merely being told not to use last or nth as the candidate
solutions but instead to write my own functions that achieve
the same goal. So the messages last is bad! or nth is
Shouldn't these funkitons take the most effective implementation
iternaly? We allready have a internal reduce-protocoll why not have
one for other functions like last? The seq library should only drop to
first/rest if there is no better implementation.
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Yes, the last monolithic contrib build was 1.3.0-alpha4. It builds with
Clojure 1.3.0-alpha4, but not the later alphas.
There are 2 combined jars in contrib 1.3.0-alpha4. The standalone
module contains all the classes/sources merged into a single JAR file. The
complete module contains
Hi Ivan et al,
I have managed to re-read the string every 15 seconds, the problem is
that the slurp reads stale data. It returns always the same string,
even though I can see in my browser that it has changed. This also
happens when I just do the slurp in the REPL. Apologies for not making
this
Hi there,
I've now seen singly linked lists used as a way of describing Clojure's
immutable data structures with the claim that they're used to implement lists.
The example usually goes as follows. A has the list '(1 2 3) which is
implemented as follows:
A
|
|
V
+---+ +---+
Hi,
yes. C has to copy the whole list and prepend its element to the element she
wants to add at the end. Lists are bad at appending.
Sincerely
Meikel
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I don't think the issue you are having is with slurp. If you could post
more of the code that is causing you problems, it would be easier to debug.
Entering the following at the repl seems to work fine for me (you can just
do (slurp http://tycho.usno.navy.mil/cgi-bin/timer.pl;) and notice that
I tried this also and it works quite well. Do you have any pointers to
information on how to access the datastore on Heroku through Clojure?
The documentation seemed sketchy on their non-Ruby offerings.
Thanks.
Asim
On Tue, Jun 7, 2011 at 9:37 PM, Sean Corfield seancorfi...@gmail.com wrote:
I
Has there been discussion about unicode support for symbols in
clojure?
There's a few ways to approach this and I'm thinking about fortress
accomplishes this [1]. The language can be displayed as ascii,
unicode, or even pictures. I think support for these things might be
good for things like
On Fri, Jun 10, 2011 at 3:26 PM, Asim Jalis asimja...@gmail.com wrote:
I tried this also and it works quite well. Do you have any pointers to
information on how to access the datastore on Heroku through Clojure?
The documentation seemed sketchy on their non-Ruby offerings.
I've not tried it,
This is absolutely killing me. I'm starting to use ClojureBox to
further my knowledge of Clojure, and I can't get it to pick up the
individual *.clj files I'm working with or the example code from
Halloway's book. There's lots of good information on line telling me
how to set up my .emacs file,
... but what if this is exactly what I need?
I'm working with Lucene and I have my custom Collector. This collector
accept fn as a constructor argument and then for each matched document it
gathers needed information from the fields of document, builds some useful
clojure object and passes it
On Fri, Jun 10, 2011 at 11:16 AM, alsor alsor@gmail.com wrote:
... but what if this is exactly what I need?
I'm working with Lucene and I have my custom Collector. This collector
accept fn as a constructor argument and then for each matched document it
gathers needed information from the
Of course, lazy Clojure functions like concat end up basically doing this:
(def q (concat '(1 2 3) '(4)))
q
|
|
V
[lazy-concat]
| |
V V
'(1 2 3) '(4)
The result of a lot of concats ends up therefore being a tree
structure under the hood. It can be
This might break even without future Clojure changes. It's a really bad idea.
If you really must go with a mutable accumulator, you should use something like
(let [v (atom [])
f (fn [obj]
(swap! v conj obj))]
(.search searcher (MatchAllDocsQuery.)
Yes, ignoring the return value of transient-modifier functions is not
guaranteed to work. Even in current Clojure, it won't always work.
Transient data structures are usually passed around as a parameter to a
loop/recur or recursive function call.
-Stuart Sierra
clojure.com
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Symbols already permit Unicode characters. The Clojure reader assumes
UTF-8. This may or may not render in G. Groups, though:
user= (def π (Math/PI))
#'user/π
user= π
3.141592653589793
Of course, there's no actual layout, but you could write code that reads a
mathematical expression in
Hi Mark et al,
I just tried your code and it does indeed work fine. It updates the
time as expected. Not sure why my code isn't working as expect... a
more investigating to do.
Thomas
ps. the web string won't start updating again until Monday morning.
On Jun 10, 3:30 pm, Mark Rathwell
The knack lies in learning how to throw yourself at the ground and miss.
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On Jun 9, 6:14 pm, Mark Engelberg mark.engelb...@gmail.com wrote:
On Thu, Jun 9, 2011 at 8:20 AM, Jeff Dik s45...@gmail.com wrote:
I had to change a s-exp on line 848 in clojure-mode.el from
(expand-file-name clojure-root)
to
(replace-regexp-in-string / (expand-file-name
A hot bath is for me is the best moment to do this. I let my mind loose not
thinking
about anything specific.
My wife think I am in this state continuously but that's another discussion :).
Of course, using a hammock outside here in January/February by -25 Celsius would
literally freeze my mind
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