Hi
I am just testing clojure :pre condition. But look like using keyword?, it
is not working in clojure 1.5.1.
(defn check-keyword [v] {:pre [keyword? v]} v)
(defn check-nil [v] {:pre [nil? v]} v)
(check-keyword “sdf”) ;Not throwing exception here
(check-nil nil) ;Throwing exception
Br,
Hi Mamun,
This is the correct syntax (you're missing some parens).
(defn check-keyword [v] {:pre [(keyword? v)]} v)
Thanks,
Ambrose
On Thu, Feb 13, 2014 at 6:47 PM, Mamun mamuni...@gmail.com wrote:
Hi
I am just testing clojure :pre condition. But look like using keyword?, it
is not
Guys, thank you all for input.
I found that both keywords were (as you expected) loaded by same
classloader (same parent was used in both). After fixing that the assert
indeed fails.
Cheers!
On Thursday, 13 February 2014 00:41:12 UTC+1, Alex Miller wrote:
Reading a little more closely,
I've been busy working on a few libraries targetting both Clojure
ClojureScript, however so far have only tested the CLJ side and now that it
comes to addressing CLJS am running in circles (and on fumes)
unsuccessfully trying to tweak my project settings to make things work.
All my source is
Try my new library. It makes reflection really easy to use
http://github.com/zcaudate/iroh
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HI Ambrose,
Thanks for your reply. But why this one is working?
(defn check-nil [v]
{:pre [nil? v]}
v)
Br,
Mamun
On Thursday, February 13, 2014 11:51:31 AM UTC+1, Ambrose Bonnaire-Sergeant
wrote:
Hi Mamun,
This is the correct syntax (you're missing some parens).
It doesn't work, in your OP it incorrectly throws an exception when you
pass it nil.
:pre just takes a sequence of expressions which are executed like `do`, and
throws an exception if any expression returns a false value.
Thanks,
Ambrose
On Thu, Feb 13, 2014 at 7:53 PM, Mamun
Dear list,
[Sorry if this may be a bit of topic, but I don't know much about php and
http, and I'm not sure where else to turn]
I'm trying to port a working php api client implementation to clojure.
So on the one hand, I've got the following working php code for performing
a signed post
2014-02-13 1:05 GMT+08:00 Herwig Hochleitner hhochleit...@gmail.com:
2014-02-12 5:36 GMT+01:00 Di Xu xudi...@gmail.com:
all lisp dialect provide `read` function, so if you want to build an
evaluator, you could just use this function and don't need to do lexical
and syntax analysis.
Untested of course, but I think you need to use either :body or
:form-params rather than :query-params to put the query-params data into
the body of the post request.
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They return identical data if you use http://httpbin.org/post as url ?
/Kevin
On Thu, Feb 13, 2014 at 1:35 PM, Gijs S. gijsstuur...@gmail.com wrote:
Untested of course, but I think you need to use either :body or
:form-params rather than :query-params to put the query-params data into
the
That did the trick! Thanks!!
Op donderdag 13 februari 2014 13:35:46 UTC+1 schreef Gijs S.:
Untested of course, but I think you need to use either :body or
:form-params rather than :query-params to put the query-params data into
the body of the post request.
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Solved by Gijs S., but thanks anyway, I didn't know about httpbin.org.
Op donderdag 13 februari 2014 14:03:18 UTC+1 schreef Kevin Ilchmann
Jørgensen:
They return identical data if you use http://httpbin.org/post as url ?
/Kevin
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Hi Adrian,
I've been discovered :) I enjoyed exploring a ESB scenario. In abstract you
may go along the lines of any of ESB solutions this way:
1) Any task is performed by suitably configured components
2) componets live in a container
3) components communicate through a message router
4)
Hello, all,
Would you like help in growing your Clojure project? Please add it to
the Project Ideas page [1] and help Clojure get accepted into the Google Summer
of Code.
Clojure has benefited from its involvement in GSoC in past years. It
has helped projects like Typed Clojure, Clojure in
In the olden lisp days, reduce was often preferred to
apply because apply could hit limits on the number of
arguments that could be passed to a function. Is that a
potential issue with clojure?
No. Clojure's `apply` is lazy. Varargs are passed to the
function as a lazy sequence, and it's up
str is much faster with apply than with reduce; in fact, with reduce
it is O(n^2), whereas with apply it is O(n). (The constants are better
with apply too.)
In general, (apply foo ...) takes advantage of any optimizations the
author of foo might be aware of for speeding up its operation when
I am a new clojure player,but i have wrote java code by few years.
when i use emacs run my clojure code (read a big file 50M ) , nrepl run
over use 30 second.
but i use lein uberjar clojure to jar .and i use it jar in eclipse , this
jar import in a embeded jetty when it started,
some time
Hey,
a simple exception middle-ware for ring, maybe useful for some,maybe none.
it catch exceptions and print, meanwhile the source code produced the
exception will be print as well.
- The demo will stay here (click me)http://red-raiseup.rhcloud.com/notes/abc
.
- The source code is
Looks great. I've incorporated this into my debug configuration.
2014-02-13 17:39 GMT+01:00 bob wee@gmail.com:
Hey,
a simple exception middle-ware for ring, maybe useful for some,maybe none.
it catch exceptions and print, meanwhile the source code produced the
exception will be print
I would say that with good reducers, the reduce approach can eliminate seq
creation and thus be at least a bit faster and less demanding for GC.
On Thu, Feb 13, 2014 at 4:16 PM, Michał Marczyk michal.marc...@gmail.comwrote:
str is much faster with apply than with reduce; in fact, with reduce
I think this is a great discussion, and there are myriad ways to get there.
I haven't settled my own opinions firmly enough to advocate for one
implementation over another at this point, but I do think that Incanter
could become a killer toolbox (even more than now) with the additon of...:
You can also use the intern function to chamge the value of a any var in any
namespace.
Hope it helps
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On Feb 13, 2014, at 08:56 , Stuart Sierra the.stuart.sie...@gmail.com wrote:
No. Clojure's `apply` is lazy. Varargs are passed to the
function as a lazy sequence, and it's up to the function to
realize them or not.
It's worth noting (for people who might try to rely on that laziness) that
Hi,
I'm a bit late to the party here (and very new to the party - this being
my first post to the group) but maybe this of interest:
I've been working on number 1 and sort of number 2 since the start of the
year, and have something pretty solid working now. It's a browser based
REPL, in the
On Feb 13, 2014, at 14:31 , Michael Gardner gardne...@gmail.com wrote:
On Feb 13, 2014, at 08:56 , Stuart Sierra the.stuart.sie...@gmail.com wrote:
No. Clojure's `apply` is lazy. Varargs are passed to the
function as a lazy sequence, and it's up to the function to
realize them or not.
My guess is that when using a rest-param a call to next is involved thus
realizing two elements of the sequence. A call to rest only realizes the
first element:
user (defn f [x] (println x) x)
#'user/f
user (defn s [n] (lazy-seq (cons (f n) (s (inc n)
#'user/s
user (def t (rest (s 0)))
0
FYI:
http://stackoverflow.com/questions/21759848/
On Thursday, February 13, 2014 11:02:07 AM UTC-5, Xiaojun Weng wrote:
I am a new clojure player,but i have wrote java code by few years.
when i use emacs run my clojure code (read a big file 50M ) , nrepl run
over use 30 second.
but i
Okay,
v0.1.5 is out: http://z.caudate.me/jvm-class-reflection-made-simple/
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On Wed, Feb 12, 2014 at 10:55 PM, zcaudate z...@caudate.me wrote:
Iroh is a library for jvm reflection. It is designed to be used for testing,
repl based development, and blantant hacks bypassing the jvm security
This is pretty cool. Will give it a shot next time I'm trying to tame
a java
Can anyone point to Clojure code for detecting when two 3d shapes overlap, when
given the [x y z] vertices of the two shapes?
The specific case I care about will always involve two regular tetrahedra (each
of which is specified by 4 vertices), which may allow for special
simplifications or
On Feb 13, 2014, at 15:17 , Mauricio Aldazosa
mauricio.aldaz...@ciencias.unam.mx wrote:
My guess is that when using a rest-param a call to next is involved thus
realizing two elements of the sequence.
A destructured vararg is nil when there are no more items, which indeed
requires realizing
@Jony
This is very exciting. Is this on github or somewhere else public? Would
love to take a look at what you are doing. The snapshot looks awesome :-)
Chris
On Thursday, February 13, 2014 12:15:11 PM UTC-8, Jony Hudson wrote:
Hi,
I'm a bit late to the party here (and very new to the
Hi,
Preemptive: :-)
* I'm not looking for datomic.
* I'm also not looking for sqlkorma.
* An in-memory data-log might be what I'm after.
Context:
I'm reading:
http://code.kx.com/wiki/JB:QforMortals2/tables
and it struck me -- why can't I view a clojure {vector,list} of maps
as
It sounds like you have everything setup correctly---nothing stands out to
me as being a problem.
I can't tell for sure without the project source code, though.
Take a look at Prismatic Schema's project.clj:
https://github.com/Prismatic/schema/blob/master/project.clj
they have the same use
You sure this isn't what you're looking for?
https://gist.github.com/stuarthalloway/2645453
On Thu, Feb 13, 2014 at 8:34 PM, David Jagoe davidja...@gmail.com wrote:
Here's an example:
http://www.bagdemir.com/2013/07/30/implementing-relational-algebra-in-clojure/
On 13 February 2014
I've been banging the drum about Om modularity for a while now and I've
come up with the very beginning of a simple reusable component that I think
demonstrates the power of Om's emphasis on modularity and application wide
state management:
http://github.com/swannodette/om-sync
The whole point
Hi Karsten,
Strangely, I was doing the exact same thing as you yesterday and
struggled for a bit until I found settings that work.
I achieved success when I used the configuration from Cornice as a template:
https://github.com/rkneufeld/cornice/blob/master/project.clj
...with one exception, my
Happy to announce a new release of Om. There are some breaking changes
mostly to make the API more uniform - om.core/root was needlessly different
from om.core/build.
The biggest and most exciting change is the inclusion of the :tx-listen
option to om.core/root. This will setup a callback which
@David:
* set operations is not what I'm looking for
* the relational algebra blog was very useful
@Jeb:
* Ha! I didn't know that q could be used separate of datomic. I
might just use datomic after all.
Thanks!
On Thu, Feb 13, 2014 at 6:43 PM, Jeb Beich jebbe...@gmail.com wrote:
You sure
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