Case :
clojure verison:
(time (dotimes [n 1000] (str n another word))) ;; take about 5000msec
java version
long time = System.nanoTime();
for(int i=0 ; i1000 ;i++){
String a=i+another word;
}
System.out.println(System.nanoTime()-time);
Hi,
In one of the talks, Rich Hickey had mentioned something to the effect -
Programs are meant to state the intention of your computation to other
programmers/humans - as opposed to instructions for a machine
He was quoting someone else actually (perhaps Knuth). I just cant seem to
get my
Hi everyone,
I made a new video about Clojure that I wanted to share with you all. It's
a sales pitch for choosing Clojure as the language for your next project:
The case for Clojure http://youtu.be/NvxyTKyXSRg
I realise that if you're reading this discussion group there's a good
chance that
Thus, programs must be written for people to read, and only
incidentally for machines to execute. --
http://mitpress.mit.edu/sicp/front/node3.html
On Sat, Mar 1, 2014 at 2:48 AM, Kashyap CK ckkash...@gmail.com wrote:
Hi,
In one of the talks, Rich Hickey had mentioned something to the effect -
have you considered reading the LightTable code? There is probably some
cljs and editor in there
On Saturday, 1 March 2014 17:26:18 UTC+11, t x wrote:
Hi,
Is there anything like http://codemirror.net/ or
http://ace.c9.io/#nav=about in cljs ?
The goal is not to use
Thank you so much,
Regards,
Kashyap
On Saturday, March 1, 2014 4:27:05 PM UTC+5:30, t x wrote:
Thus, programs must be written for people to read, and only
incidentally for machines to execute. --
http://mitpress.mit.edu/sicp/front/node3.html
On Sat, Mar 1, 2014 at 2:48 AM, Kashyap CK
Hi All,
Just a quick note to let everyone know about events in Scotland over the
coming weeks.
First up the inaugural meeting of the Glasgow Clojurians with be this
Thursday (6th March) at Spaarks, 70 W Regent St, Glasgow at 7pm. We'll be
running a Clojure Dojo based on what the guys in
No, it appears lighttable uses CodeMIrror.
See:
* https://github.com/LightTable/LightTable/search?q=codemirrorref=cmdform
* http://www.chris-granger.com/2012/04/15/light-tables-numbers/
On Sat, Mar 1, 2014 at 3:02 AM, Dave Sann daves...@gmail.com wrote:
have you considered reading the
The String a=i+another word; is also compiled into using
StringBuilder, see the byte code by javap -v:
Code:
stack=5, locals=5, args_size=1
0: invokestatic #2 // Method
java/lang/System.nanoTime:()J
3: lstore_1
4: iconst_0
5:
I forgot to note hat i test the java sample and clojure sample code with
the same jvm options '-server'.
2014-03-01 20:03 GMT+08:00 dennis zhuang killme2...@gmail.com:
The String a=i+another word; is also compiled into using
StringBuilder, see the byte code by javap -v:
Code:
I think the remaining overhead of clojure sample code is that operators in
java such as '++' and ' etc.They are just an instrument of JVM -- iinc
and if_icmpge. But they are both functions in clojure,and they will be
called by invokevirtual instrument.It cost much more performance.
2014-03-01
Reid,
Thank you kindly. That makes sense. Your help is much appreciated, as are
your efforts with this library.
Thanks,
Andrew
On Thursday, 27 February 2014 17:22:44 UTC, Reid Draper wrote:
I'm happy to announce the first release of the newest Clojure contrib
library:
test.check [1].
Clojure math functions compile down to the same JVM 'instruction' as from
java. See http://galdolber.tumblr.com/post/77153377251/clojure-intrinsics
On Sat, Mar 1, 2014 at 1:23 PM, dennis zhuang killme2...@gmail.com wrote:
I think the remaining overhead of clojure sample code is that operators
Yep, you are right, inspecting the byte code generated by the clojure code:
(loop [n 0]
(when ( n 1000)
(- (StringBuilder.) (.append n) (.append another word)
(.toString))
(recur (unchecked-inc n
It is:
L4
LINENUMBER 4 L4
LLOAD 1
LDC 1000
From my experience, you can get 1/1.2 performance (20% slower) with Clojure
by following these steps:
* Choose right clojure idioms
That means to never use lazy seqs if you care for java-like performance.
For fast looping, use reducers, for fast inserts, use transients.
Postpone the data
I expected the following to work, but it doesn't:
(defn declare-foo []
(intern *ns*
(with-meta '*foo* {:dynamic true :private true})
foo))
Although it creates a var, it is not dynamic. We can mark it
dynamic ourselves,
but it seems that such ability is an implementation
On Saturday, 1 March 2014 15:32:41 UTC+5:30, bob wrote:
Case :
clojure verison:
(time (dotimes [n 1000] (str n another word))) ;; take about 5000msec
java version
long time = System.nanoTime();
for(int i=0 ; i1000 ;i++){
String a=i+another word;
do like this:
(ns clojurewerkz.support.hashing
(:require [clojurewerkz.support.internal :as i])
(:import [com.google.common.hash Hashing HashFunction HashCode]))
but:
FileNotFoundException Could not locate clojurewerkz/support__init.class or
cloju
rewerkz/support.clj on classpath:
I've had good experiences with https://github.com/xsc/pandect.
You can also use Java interop like this:
https://gist.github.com/prasincs/827272
JPH
On 03/02/2014 12:26 AM, action wrote:
do like this:
(ns clojurewerkz.support.hashing
(:require [clojurewerkz.support.internal :as i])
Have you checked out Http://hoplon.io?
'(Devin Walters)
On Feb 28, 2014, at 12:55, Daniel doubleagen...@gmail.com wrote:
Long story short. You should be learning Pedestal, but the app component is
on pause at the moment. My advice is to learn pedestal-service and Om.
When Pedestal-app
Awesome! I've been addicted to Rx lately and this is just what I need for
one of my projects. I'll definitely check this out and let you know how it
goes.
On Tuesday, May 21, 2013 4:01:46 AM UTC-4, Leonardo Borges wrote:
Hey guys,
Given some recent work I've been doing with RxJS [1], I
Thanks so much Dan, that was a great help!
the code ends up being:* (def ctg (- js/React (aget addons) (aget
CSSTransitionGroup))) *
but yeah, you were totally correct :)
On Friday, February 28, 2014 5:34:34 AM UTC-8, Dan Holmsand wrote:
Yes, Reagent doesn't know about React components that
You can use java.security.MessageDigest. For example:
(defn create-hash
[data-barray]
(.digest (java.security.MessageDigest/getInstance SHA1) data-barray))
It takes and returns a byte array, but converting from/to a string is
fairly straight-forward:
(- Hello, World!
.getBytes
I'm also looking for collaborators as it is getting to a stage where I'm
having trouble managing it by myself.
if anybody is interested. Please send me a message
Chris
--
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To post to this group, send
Good point, Thanks a lot.
Shall we improve the str fn in the core lib? From my point of view, the
core fns should be performance sensitive.
On Sunday, March 2, 2014 12:03:21 AM UTC+8, Shantanu Kumar wrote:
On Saturday, 1 March 2014 15:32:41 UTC+5:30, bob wrote:
Case :
clojure
Core fns should be simple, unsurprising, and general.
'Improving' str may hurt simplicity, make behavior more surprising and
unexpected, and less general unless proven otherwise.
On Sat, Mar 1, 2014 at 7:02 PM, bob wee@gmail.com wrote:
Good point, Thanks a lot.
Shall we improve the str
(isa? [String String] [Object Object]) returns true. This is nice and
useful.
However
(isa? '(String String) '(Object Object) returns false, this is not so nice.
(isa? '(String String) [Object Object]) also return false.
So the moral of the story is that for multiple argument dispatch to
This came up a while back and it appeared that the metadata just reflected
whether the var was created with the ^:dynamic annotation. But the meta
attribute is an output, so to speak; the info flows from the var
declaration to the meta but not the reverse. Maybe it'll remain like that
as
Looking at the source of isa? it very specifically calls out vector arguments
so I'd say it's by design.
Be careful that (isa? '(String foo) '(String foo)) returns true - child equal
to parent regardless of type.
(defn isa?
Returns true if (= child parent), or child is directly or indirectly
From https://github.com/maitria/avi
Avi is a vi written in Clojure. It's currently very basic and read-only,
but has solved the hardest problems first (JNI terminal writing,
installation, booting the JVM).
It currently supports h,j,k,l,^E,^Y,$,^,0,G,:q and command repeat counts.
*Vision*
A
Hi Jason, Angela,
Wow, looks like fun!
It would be nice just have to specify the install prefix path once, instead
of in the bash
and install.clj file. Also the bin directory needs to be manually created
(same with the prefix directory).
I tried running the executable, I got this:
Hi Jason, Angela
It is cool, but it not support linux. I modify the avi.install to make it
support linux.
On Sunday, March 2, 2014 12:25:50 PM UTC+8, Jason Felice wrote:
From https://github.com/maitria/avi
Avi is a vi written in Clojure. It's currently very basic and read-only,
but has
On Sunday, 2 March 2014 05:32:00 UTC+5:30, bob wrote:
Good point, Thanks a lot.
Shall we improve the str fn in the core lib? From my point of view, the
core fns should be performance sensitive.
If string formation is the bottleneck in your app and if you can come up
with a version of
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