In addition to what has already been said. There are a few approaches I
take:
1) re-implement in Clojure some smallish project that you already have in
another language
practice seeing how to solve the same kinds of problems but using
idiomatic Clojure approaches. Since the project is
On Wed, May 9, 2012 at 2:08 PM, Alex Baranosky
alexander.barano...@gmail.com wrote:
3) read through core.clj, like a fine classic novel. You'll get all sorts
of good stuff through this process. I can't express deeply enough how
important this is. Just DO IT.
It's a fascinating read, but
Hi,
Am Mittwoch, 9. Mai 2012 08:08:10 UTC+2 schrieb Alex Baranosky:
3) read through core.clj, like a fine classic novel. You'll get all sorts
of good stuff through this process. I can't express deeply enough how
important this is. Just DO IT.
I throw in a warning here. core.clj
Ambrose and Meikel,
Those are excellent points, but IMO to really be a great clojure developer
you really can't get away with not having read the classic goodness that is
core.clj. :) And after that having read through the Java code at the core
of Clojure: the interfaces and the reader etc.
On
+1
On Wed, May 9, 2012 at 2:38 PM, Alex Baranosky
alexander.barano...@gmail.com wrote:
Ambrose and Meikel,
Those are excellent points, but IMO to really be a great clojure developer
you really can't get away with not having read the classic goodness that is
core.clj. :) And after that
All I can say is, wow! I do have some questions, though.
Am I mistaken or is fork/join Java 7? Anyone have this running on OS X yet? If
so with the Oracle preview or Open JDK? Also, core map and friends are lazy,
reducer map and friends inherently parallel. We also have pmap/preduce. Can
On Wed, May 9, 2012 at 4:26 PM, Christian Romney xmlb...@gmail.com wrote:
Am I mistaken or is fork/join Java 7? Anyone have this running on OS X yet?
If so with the Oracle preview or Open JDK?
Yes, it's a part of Java 7, but there is also a reference
implementation of the spec (jsr166y)
It looks very good.
Just a few side-notes:
- this representation is quite well known, as it is the Church
encoding of list, often used in System F, for example.
It corresponds to stating the definition of sequences as the
initial algebra of F A = 1 + Any x A.
- you can play a dual trick for
Thank you very much indeed!
On 05/08/2012 11:14 PM, Andy Fingerhut wrote:
I've added some discussion about this behavior in an example for
clojure.core/future on ClojureDocs.org here:
http://clojuredocs.org/clojure_core/clojure.core/future
Since people often come across this behavior
Does this mean we need to call (shutdown-agents) whenever we use futures
(internally or explicitly)?
I've never had any problems with clojure.java.shell/sh or pmap, albeit
i've not used them extensively...
Jim
On 09/05/12 12:16, Muharem Hrnjadovic wrote:
Thank you very much indeed!
On
Hi,
Does lein2 have a way to pull in dependencies from git ?
Just checking any alternatives to https://github.com/tobyhede/lein-git-depsin
leiningen itself.
Thanks,
Murtaza
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Thanks guys, I opened an
issuehttps://github.com/emezeske/lein-cljsbuild/issues/87and I found
a pretty good explanation
about putting scripts inside the
bodyhttp://stackoverflow.com/questions/1220956/move-jquery-to-the-end-of-body-tag
.
Good work with Clojurescript as well, it's really cool.
Hi,
A little digging led me to clojure-hadoop.filesystem which had most of the
context info I was interested in.
Sunil.
On Wed, May 9, 2012 at 2:02 PM, Sunil S Nandihalli
sunil.nandiha...@gmail.com wrote:
Hi Everybody,
I have been using clojure-hadoop with out knowing all the nitty-gritties
This analogy is not quite right.
(fn [n] (vector n (+ n 1))
is not a reducing fn. Tt is a cons cell builder, and the Church encoding builds
lists.
The point of this library is to define map/filter etc *without* using
lists/streams - not as input, not as output, not producing links/thunks
I think the topic 'code injection vulnerability' is never out of date
especially if you treat data as a code.
Unfortunately googling for - clojure code injection vulnerability -
returns 'nil'.
Any ideas? Comments? Opinions?
Bost
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On Wed, May 9, 2012 at 6:01 PM, Rostislav Svoboda
rostislav.svob...@gmail.com wrote:
I think the topic 'code injection vulnerability' is never out of date
especially if you treat data as a code.
Unfortunately googling for - clojure code injection vulnerability -
returns 'nil'.
Any ideas?
Rostislav Svoboda rostislav.svob...@gmail.com writes:
I think the topic 'code injection vulnerability' is never out of date
especially if you treat data as a code. Unfortunately googling for -
clojure code injection vulnerability - returns 'nil'.
Any ideas? Comments? Opinions?
I don't
This is the ticket. You can read all the books you want (and they do help),
but working through 4clojure (and observing the solutions by others) will
teach you more and better than anything else you can do.
On Tue, May 8, 2012 at 4:08 PM, Bill Caputo logos...@gmail.com wrote:
On May 7, 2012, at
Hola,
Like clojure, smugmug, and uploading your photos using clojure?
Try a new wrapper for
smugmug.com: https://github.com/halfaleague/trickyhappyface
Thanks,
Luke
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I'm trying to work through the Clojurescript One Getting Started
wiki page example found here:
https://github.com/brentonashworth/one/wiki/Getting-started,
but after running lein repl and entering (go), I get the
Clojurescript One pages fine, including the development page, but then
I lose the
On Wed, May 9, 2012 at 1:00 PM, Rich Hickey richhic...@gmail.com wrote:
This analogy is not quite right.
(fn [n] (vector n (+ n 1))
is not a reducing fn. Tt is a cons cell builder, and the Church encoding
builds lists.
It is because I did not write it in the right way. Sorry about that.
It
On Wednesday, May 9, 2012 9:35:57 AM UTC-4, Tassilo Horn wrote:
I don't think code-as-data contributes to code injection vulnerability,
neither positively nor negatively. Simply don't `eval` code/data from
sources you don't trust.
I think it does contribute through the reader. If you are
On Wednesday, May 9, 2012 9:35:57 AM UTC-4, Tassilo Horn wrote:
I don't think code-as-data contributes to code injection vulnerability,
neither positively nor negatively. Simply don't `eval` code/data from
sources you don't trust.
I think it does contribute through the reader. If
Walter Tetzner robot.ninja.saus...@gmail.com writes:
On Wednesday, May 9, 2012 9:35:57 AM UTC-4, Tassilo Horn wrote:
I don't think code-as-data contributes to code injection
vulnerability, neither positively nor negatively. Simply don't
`eval` code/data from sources you don't trust.
I
On May 9, 2012 10:02 AM, Walter Tetzner robot.ninja.saus...@gmail.com
wrote:
I feel like `*read-eval*' should default to false, and you should have
to explicitly bind it to true.
Yes, but with 'load' binding it to true. You are evalling anyway, and else
it would be quite difficult to use just
On 9 May 2012 15:35, Tassilo Horn tass...@member.fsf.org wrote:
Simply don't `eval` code/data from sources you don't trust.
In a client-server architecture the thing I (i.e. the server) don't
trust is the client... and I'm not sure if I can ignore him just like
that :)
Bost
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On 9 May 2012 15:57, Walter Tetzner robot.ninja.saus...@gmail.com wrote:
I feel like *read-eval* should default to false, and you should have to
explicitly bind it to true. Either that, or there should be 'safe' versions
of
Many people just copy-paste code snippets to their source files/repl
Rostislav Svoboda rostislav.svob...@gmail.com writes:
Simply don't `eval` code/data from sources you don't trust.
In a client-server architecture the thing I (i.e. the server) don't
trust is the client... and I'm not sure if I can ignore him just like
that :)
Not evaluating everything a
Rostislav Svoboda rostislav.svob...@gmail.com writes:
Many people just copy-paste code snippets to their source files/repl
withouth really knowing if they are safe or not safe.
IMO it might help to rename the *read-eval* to something like
*read-eval-ACHTUNG-danger*. For me - as a newbie -
I've seen hinted (and I'm pretty sure I've seen examples, but I can't
remember where) that Datomic can incorporate data from regular Clojure
collections. Is there some doc for this or an example?
Thanks in advance
Hi Mark,
I have moved this to the Datomic group and answered it there:
On 9 May 2012 17:31, Tassilo Horn tass...@member.fsf.org wrote:
you should bind *read-eval* to false when reading data from unknown sources.
This is the point! On one hand I need to evaluate data from a client
on the other hand I'd like to filter out things like rm -rf /, drop
table users etc.
On Wed, May 9, 2012 at 5:01 PM, Rostislav Svoboda
rostislav.svob...@gmail.com wrote:
On 9 May 2012 17:31, Tassilo Horn tass...@member.fsf.org wrote:
you should bind *read-eval* to false when reading data from unknown sources.
This is the point! On one hand I need to evaluate data from a client
On May 9, 2012, at 11:01 AM, Rostislav Svoboda wrote:
This is the point! On one hand I need to evaluate data from a client
on the other hand I'd like to filter out things like rm -rf /, drop
table users etc. To me it looks like a contradiction impossible to
circumvent. So I ask if there's
On Wed, May 9, 2012 at 4:27 AM, Murtaza Husain
murtaza.hus...@sevenolives.com wrote:
Does lein2 have a way to pull in dependencies from git ?
Just checking any alternatives to https://github.com/tobyhede/lein-git-deps
in leiningen itself.
I highly recommend using Leiningen's built-in
Hello all,
I'm going to keep this as short as possible...basically this guy came
today in Machester uni to talk to all postgrads about work he's done on
STM implementations for Microsoft research.
In a nutshell, and very general he highlighted the following:
1. general purpose STM systems
Hi,
if he was talking about the things, Joe Duffy describes on [1], those were
way more general purpose. Clojure carefully combines several features,
(i.e. immutable data, persistent datastructures, reference types) to allow
the current implementation of STM. For example Clojure does not
The exact paper is this (called STM In the small):
http://www.google.co.uk/url?sa=trct=jq=stm%20spectmsource=webcd=3sqi=2ved=0CGEQFjACurl=http%3A%2F%2Finfoscience.epfl.ch%2Frecord%2F174888%2Ffiles%2Feuro170-dragojevic.pdfei=BcGqT8vSJsHf8AOfwYjjBAusg=AFQjCNEITMgowGA_QZHUrJTAqSnphild0w
from a
So clojure's STM does not fall under the general purpose category with
terrible preformance he was referring to?
This is correct. Clojure has very few ways of modifying global state.
99% of your clojure code should be immutable. Immutable data does not
need to be protected by a STM. In that
One thing to consider here is, that when trying to implement general
purpose STM for an imperative language, basically every assignment is
a candidate for a write conflict, akin to a ref-set in clojure's STM.
OTOH in idiomatic clojure there are no assignments, only lexical
bindings, new versions
The important thing to remember is that most researchers/programmers are
looking for a silver bullet for concurrency that will allow programmers to
get semantically correct programs *without having to change the way they
think or do things*. The idea is to take a typical imperative program and
On Tuesday, May 8, 2012 11:18:42 AM UTC-4, Andrew wrote:
Cool... Do you use kilns at Akamai, and to what extent?
Another question: you set up coals and clays and eventually kilns are
fired. When you're setting up the coals and clays in code, you're telling
the system about dependencies.
Well, I’m not sure what you mean. It does nothing specific with the “data
types” as such, so I would say, no, that isn’t it.
On Monday, May 7, 2012 10:59:22 AM UTC-4, cperkins wrote:
I like it. Kiln looks like it is automatically composing the request
handler based mostly on a description
Thanks all of you for your input...
i was suspecting that i would get replies like these...they all
basically come down to the same conclusion, that the functional style
favours the STM abstraction and avoids some of its inherent bottlenecks...
just one more thing though...
what i omitted
This is the point! On one hand I need to evaluate data from a client
on the other hand I'd like to filter out things like rm -rf /, drop
table users etc. To me it looks like a contradiction impossible to
circumvent. So I ask if there's anything like best practices or even
better something
On May 9, 2012, at 12:15 PM, Michael Gardner wrote:
I've never understood why anyone would use prn/read for data transfer, other
than extreme laziness.
But extreme laziness is an excellent reason!
Larry Wall called laziness the first great virtue of a programmer.
-Lee
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On May 9, 2012, at 12:15 PM, Michael Gardner wrote:
I've never understood why anyone would use prn/read for data transfer,
other than extreme laziness.
When I encounter the ancestor of XML in the mid 80s, SGML, it was used as a
typesetting tool for laser printers, just before the
I would be indebted to you if you could point me in the direction of the
reading material necessary to follow this discussion. I'm afraid I'm currently
out of my depth, but very eager to understand.
Sincerely,
Christian Romney
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