Nice to see them coming through on ClojureTV channel on youtube. I'm very
much enjoying the presentations. Thankyou.
regards,
Richard.
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On 30 Dec 2013, at 16:34, Cedric Greevey cgree...@gmail.com wrote:
To do it with case, you'd need to wrap case in a macro that expanded to
`(case ~thingy ~(eval case1) ...) or something along those lines
Thanks, but I suspect that that might be another way of saying use condp :-)
Cheers,
Hi Lee,
Can anyone tell if I'm right that this is a bug in clojure.zip? If so, then
is the right thing to do to post an issue on JIRA?
I don't have any insight regarding whether this is a bug (haven't yet had an
opportunity to dig into clojure.zip or zippers in general). However, I think
I am a newbie in clojure. I need to send multiple http requests in parallel
and need to have a call back when response for each request come back. What
will be the idiomatic way of doing it in clojure?
Thanks in advacne
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I'd suggest taking a look at the http-kit client library:
http://http-kit.org/client.html
On Tuesday, 31 December 2013 08:46:53 UTC, chinmoy debnath wrote:
I am a newbie in clojure. I need to send multiple http requests in
parallel and need to have a call back when response for each request
Thanks a lot, Mikera and Tim!
I have started looking into Incanter but especially Leiningen sounds as
something that is good to know better.
Happy new year!
On Sunday, December 29, 2013 3:53:44 AM UTC+1, Tim Visher wrote:
Leiningen as well. :)
On Fri, Dec 27, 2013 at 1:53 PM, Jakub Holy
I too have heard that using Akka from Clojure is not so easy, see Distributed
Actors in
Clojurehttp://martinsprogrammingblog.blogspot.no/2012/05/distributed-actors-in-clojure.html(5/2012)
– a discussion of options for Akka-like stuff in Clojure. Akka is
great but “interfacing to Akka from
Folks,
I've recently migrated to cider on two platforms, Mac OS X (Mavericks) and
Debian Wheezy. With each, I encountered one issue, but different in each
case. If these are worth reporting formally, I'd be happy to do so.
1. Mac OS X
Once cider was installed, I was unable to use
http-kit is great, and here's an example of using it with core.async to
manage the callbacks:
https://github.com/halgari/clojure-conj-2013-core.async-examples/blob/master/src/clojure_conj_talk/core.clj#L361
Timothy
On Tue, Dec 31, 2013 at 7:10 AM, Mikera mike.r.anderson...@gmail.comwrote:
I'd
Maybe it's not exactly what you need, but i did similar thing once - i
needed to scrape many linked html resources to extract tree data structure,
each request/parse operation took considerable time - around 2 seconds - i
was using clj-http/enlive combo (which is actualy Apache HttpClient/
I've seen the pprint error on startup often.
On Tue, Dec 31, 2013 at 9:47 AM, mwillson cdr@gmail.com wrote:
Folks,
I've recently migrated to cider on two platforms, Mac OS X (Mavericks) and
Debian Wheezy. With each, I encountered one issue, but different in each
case. If these are
Not really, as the lookups will happen at macroexpansion time and not at
runtime. It should be as efficient as a normal (case ...).
On Tue, Dec 31, 2013 at 7:00 AM, Paul Butcher p...@paulbutcher.com wrote:
On 30 Dec 2013, at 16:34, Cedric Greevey cgree...@gmail.com wrote:
To do it with case,
On Tue, Dec 31, 2013 at 9:26 AM, Jakub Holy jakub.h...@iterate.no wrote:
I also believe that Rich Hickey has some good reasons for why / when not
to use actor-based concurrency. I cannot find the reference now, perhaps it
is mentioned (also) in the StrangeLoop 2013 Clojure core.async
The implementation of seq-zip uses seq? as its branching predicate. As a
result the zipper goes down on () thinking it can have children:
user= (seq? ())
true
user= (seq? {})
false
user= (seq? #{})
false
user= (seq? [])
false
On Sunday, December 29, 2013 10:14:23 AM UTC-8, Lee wrote:
I
i solved a few little thingy with clojure now, including some euler
problems, java interop and an asteroids clone.
my summary would be:
* very nice to write +1. i used clojure's collections for a lot of things,
and they made a good impression
* you need to plan far ahead compared to java. in
hallucinated interfaces : I like it :-).
I think of it as 'data shapes', or implicit contracts. The added
value/cost over explicit types is it's open to interpretation and the
reader's subjectivity. Let me tell you, when you work with large amounts
of uncommented clojure code, the flexibility
On Dec 31, 2013, at 5:08 PM, Armando Blancas wrote:
The implementation of seq-zip uses seq? as its branching predicate. As a
result the zipper goes down on () thinking it can have children:
user= (seq? ())
true
user= (seq? {})
false
user= (seq? #{})
false
user= (seq? [])
false
Does
Ticket with patch at
http://dev.clojure.org/jira/browse/CLJ-1317
The problem is that seq-zip uses clojure.core/identity as the
children argument to zipper. Applied to (), this returns (), but
clojure.zip expects the children function to return nil when there
are no children. The patch attached
Oh, and of course you can use the amended version now to obtain the
expected results:
(defn seq-zip
Returns a zipper for nested sequences, given a root sequence
{:added 1.0}
[root]
(zipper seq?
seq
(fn [node children] (with-meta children (meta node)))
On Dec 31, 2013, at 6:53 PM, Michał Marczyk wrote:
Ticket with patch at
http://dev.clojure.org/jira/browse/CLJ-1317
[and]
Oh, and of course you can use the amended version now to obtain the
expected results: ///
Thank you so much Michał!
-Lee
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No worries.
Incidentally, akhudek's fast-zip seems to have the same issue. Here's
a PR fixing it:
https://github.com/akhudek/fast-zip/pull/3
Cheers,
Michał
On 1 January 2014 02:12, Lee Spector lspec...@hampshire.edu wrote:
On Dec 31, 2013, at 6:53 PM, Michał Marczyk wrote:
Ticket with
I recently discovered that parking calls only work if they're directly
contained within a go block. So this works fine:
(defn foo [ch]
(go
(! ch)))
But this:
(defn bar [ch]
(! ch))
(defn foo [ch]
(go
(bar ch)))
Results in Assert failed: ! used not in (go ...) block
Is there
I would say use macros to avoid
hiding calls from the go macro
scope.
Luc P.
I recently discovered that parking calls only work if they're directly
contained within a go block. So this works fine:
(defn foo [ch]
(go
(! ch)))
But this:
(defn bar [ch]
(! ch))
(defn foo
It should work if it's inlined or a macro. It won't shrink foo's generated
code size any if bar is a macro, but it will split up the source code into
smaller pieces if that's all you're concerned about.
On Tue, Dec 31, 2013 at 8:50 PM, Paul Butcher p...@paulbutcher.com wrote:
I recently
I've been rethinking my clojure workflow and came up with this little
library, allowing sweet customisations of the clojure.core namespace for
development purposes:
https://github.com/zcaudate/vinyasa
It has three functions - pull, lein, inject - and their uses are described
below.
Chris.
I've done a write up of my workflow here:
http://z.caudate.me/give-your-clojure-workflow-more-flow/
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A few other things that might help:
1) you can use (put! c val) from inside any function. Sometimes if you want
to fire and forget a send, that might be the best option
2) you can wrap the code inside the sub fns inside another go. This isn't
as slow as you might think
3) think about using
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