2013/5/10 Bryan Henderson bryan.d.hender...@gmail.com
What map would be defined for the first argument with the given code? It
seems like how it is set up, it is grabbing information straight from the
JSON data without a map defined.
Parsed JSON
The 'format-forecast' definition takes
Hey,
I only glanced over the discussion, but I think you have a type problem.
Keyword vs. Strings to be precise, the JSON data you pasted will not
convert to keyword keys by default I think.
So instead of (core/get-in forecast [:dayPrecipitation :temp])
try (core/get-in forecast
W dniu poniedziałek, 6 maja 2013 05:12:37 UTC+2 użytkownik Ben Mabey
napisał:
On Sun May 5 18:31:59 2013, Mikera wrote:
On Tuesday, 30 April 2013 04:12:14 UTC+8, Jan Stępień wrote:
Dear Clojurians,
I'm very happy to announce Himilsbach 0.0.1.
Himilsbach is a tiny actor
Hi James - thanks for your response. I am still trying to wrap my head
around this as I cannot agree.
To re-frame, woobly allows you to add a job. The internal implementation
of this is that it is decorates that job and puts the *decorated job* onto
an internal LBQ. The implementation also
I would generally handle this sort of encapsulation at the namespace level.
Put (create-woobly) and (add-job) and all the other woobly-related
functions into a woobly namespace. Also add any functions that access info
from a woobly bag-o-state, or mutate a woobly to make a woobly-with-extras.
Thanks Korny.
Ok, the over-ridding theme seems to be: expose state, even if it is
dangerous, but expect consumers to 'do the right thing' and read the
documentation.
I can see that. I guess I have worked (and to be honest, been guilty
myself) with too many people who don't read the
I would like to share a library that allows for bodies of code to loop run until a Clojure Agent send-off is complete. https://github.com/runexec/hollywood#how
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(newbie, getting better each day!)
I assume we all know DI. Through the use of a central registry I can
register a service (a bean in a Spring bean factory for example). I also
define consumers of that service in the same registry passing in the
configured *instance* of that service.
In
A good question. One way is to use partial application to bake the data
source into a fn:
(def read (partial read-from-db *data-source*))
On 10 May 2013 14:04, Colin Yates colin.ya...@gmail.com wrote:
(newbie, getting better each day!)
I assume we all know DI. Through the use of a central
I agree with the advice you've gotten, but since no one has mentioned it, I
wanted to point out that you can have encapsulation w/o protocols with
something like this.
Assume a queue is your only state and `add` and `clear` are your private
fns that take a queue as first argument.
(defn
Thanks John. To be explicit - the add method shouldn't be private - it is
the only way users should add to the queue. I think this is what you meant
but you wrote ..and `add` and `clear` are your private fns...
Again, this paradigm shift of 'trust your users' is unfortunately alien to
me based
The add method that you partially apply in new-scheduler should be private,
because a user can't supply the first argument it expects. You might do
something like this.
(defn- add* [queue item] (...))
(defn add [scheduler item]
((scheduler :add) item))
(defn new-scheduler []
(let [queue
On 10 May 2013 11:32, Colin Yates colin.ya...@gmail.com wrote:
And please don't think I am making the 'code should stop bad programmers
doing the wrong thing' argument, I'm not (been there, lost). I just know
that if I released a scheduler library and the main construct was a map
containing
Hi Colin,
On 5/10/13 5:04 AM, Colin Yates wrote:
1) to use (defonce *data-source*...) so that every body who requires
that ns gets the same instance?
While this has been done I view this as an antipattern. The big problem
with this approach is that you now can only have a single
On 10 May 2013 14:10, James Reeves ja...@booleanknot.com wrote:
Have you tried it? :)
I've authored about 40 Clojure libraries over 5 years, some with data
structures with internal components. The number of times someone has said
I did X to this internal data and it broke is exactly zero.
Thanks both - some good suggestions. After years of Java I am loving how
'symmetrical' everything is in Clojure (I guess in Lisp). Thanks for the
library references.
On 10 May 2013 14:14, Ben Mabey b...@benmabey.com wrote:
Hi Colin,
On 5/10/13 5:04 AM, Colin Yates wrote:
1) to use
On Thu, May 9, 2013 at 7:15 PM, Dave Sann daves...@gmail.com wrote:
There are several projects that provide a bunch of base level/common
functions and extensions (similar to those here) beyond core Clojure. And I
am sure that many people have their own collection of useful utilities like
On 10/05/13 14:20, Colin Yates wrote:
This is all about changing my mindset from 15-odd years of Java dev by
learning from others, so let's give it a go. Years of enterprise Java
dev have gotten their cynical, 'data is precious and should be hidden
away', 'other devs will do the wrong thing'
I get your point, but Java's LinkedBlockingQueue is mutable. Of course, I
should replace it with a plain sequence or Clojure's persistent queue but I
really want the blocking semantics. That's tomorrow's job :).
On 10 May 2013 15:37, Jim - FooBar(); jimpil1...@gmail.com wrote:
On 10/05/13
On 5/7/13 3:39 PM, Ghassan Ayesh wrote:
Hi:
In Javascript language, and while the language is inherently
functional, Javascript's *implementation* until now, does not support
parallel code execution against available CPU cores, unlike Erlang for
example or Clojure on JVM, so I am thinking
Kendall Shaw ks...@kendallshaw.com writes:
[...]
I spent years with the beginnings of carpal tunnel syndrome and tried
all sorts of changes, including using both hands. But, finally, I
started using viper mode (vi key bindings) and I have had no carpal
tunnel symptoms for 10 years.
+1.
I
Doh!
I was running 0.0-1586 instead of 0.0-1798
Brian
On Monday, January 7, 2013 1:13:30 AM UTC+1, Thomas Heller wrote:
Hey,
I'm writing a Clojure Webapp with a CLJS Frontend and expected to be able
to cljs.reader/read-string everything I pr-str'd on the CLJ side. That
however does not
Hayt [1] is a CQL3 DSL allowing to compose queries from clojure functions
and/or maps.
Alia [2] is a full featured Cassandra client built on top of DataStax newly
released java-driver [3] with a simple, yet powerful API and query DSL
(Hayt).
Detailed announcement: http://bit.ly/17a0zfQ
[1]
Clojure west videos are going to be released at the break for lunch of the
armagedon battle.
I hope to live until there :)
Have a nice weekend guys !
On Thursday, March 21, 2013 1:08:48 PM UTC-3, John Gabriele wrote:
Are there any videos available of the talks recently given at
I believe 0.0-1806 is the latest.
On Fri, May 10, 2013 at 12:35 PM, Brian Jenkins bonky...@gmail.com wrote:
Doh!
I was running 0.0-1586 instead of 0.0-1798
Brian
On Monday, January 7, 2013 1:13:30 AM UTC+1, Thomas Heller wrote:
Hey,
I'm writing a Clojure Webapp with a CLJS Frontend
On 10.05.2013 14:04, Colin Yates wrote:
2) to provide a 'get-ds' accessor which returns a new instance and rely
on passing that service along to every function that needs it?
For what it's worth, some people in the OO community, most notably Nat
Pryce and Steve Freeman of Growing
Or sticks, t-shirts, whatever.
I would do it just for fun.
On Fri, May 10, 2013 at 2:18 AM, Terje Norderhaug te...@in-progress.com wrote:
I suggest allowing participants from the listed countries, but give an
eventual prize to a charity of choice to avoid a cash payment.
On Thu, May 9, 2013
On 10.05.2013 14:44, John D. Hume wrote:
Assume a queue is your only state and `add` and `clear` are your private
fns that take a queue as first argument.
(defn new-scheduler []
(let [queue (...)]
{:add (partial add queue)
:clear (partial clear queue)}))
There are several
Thanks Timo; Interesting links. Loving Clojure, but boy is it challenging
the stuff I have been doing for the past how-ever many years :).
On 10 May 2013 20:14, Timo Mihaljov t...@mihaljov.info wrote:
On 10.05.2013 14:04, Colin Yates wrote:
2) to provide a 'get-ds' accessor which returns a
When you extend a protocol to multiple Java interfaces / abstract classes,
then call the methods on an instance which implements/extends more than one
of those, the result is *undefined*.
The problem is that this permits multiple inheritance of concrete behavior,
the reason Java doesn't allow
Even when the interface and class you've extended them to are related by
inheritance? I thought the most-derived implementation was chosen, and only
when there's a tie like a class that implements two unrelated interfaces,
both of which have had the protocol extended to them. If it were
It was my impression that extending to Object is handled as a special case
- much like extend-type default in ClojureScript.
On Fri, May 10, 2013 at 6:06 PM, Alan Malloy a...@malloys.org wrote:
Even when the interface and class you've extended them to are related by
inheritance? I thought the
Hi all,
I'm looking for feedback from people who have used test.generative for
their own projects.
Specifically I'm looking for:
* things that bugged you or got in your way
* changes to signatures/args/function names/interfaces
* things you really wanted test.generative to do, but couldn't
Object is a little special, yes, so it was a bad example for me to use. But
the code used for deciding which protocol implementation to use is pretty
straightforwardhttps://github.com/clojure/clojure/blob/c0b81aa9d7ef30a5c252367c162bf7fb410ea4d7/src/clj/clojure/core_deftype.clj#L483-L502
.
It's interesting to note that clojure.java.jdbc used to use our first
option - they had a dynamically bound var *db* that you assigned using the
(with-connection) macro.
As of version 0.0.3 this has been deprecated in favour of something like
your second option - now you pass an explicit db
Hi all,
I'm trying to suss out some problems I'm encountering when compiling
Clojurescript, down to Javascript. I'm using i) a 3rd-party charting
library (highcharts.com), and ii) using cljsbuild with :optimizations
:whitespace ( :simple doesn't make a difference).
1. Clojurescript in
to-array is not sufficient, use clj-js
On Fri, May 10, 2013 at 8:58 PM, Timothy Washington twash...@gmail.comwrote:
Hi all,
I'm trying to suss out some problems I'm encountering when compiling
Clojurescript, down to Javascript. I'm using i) a 3rd-party charting
library (highcharts.com),
Aha, that did the trick... for the array and the object.
Cheers
Tim
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Robert, do you have all that in a project somewhere on github? I really
enjoy all the explanations
On Fri, May 3, 2013 at 7:19 PM, Robert Louis McIntyre r...@mit.edu wrote:
I've written some JME3 wrapper code for my thesis project -- it's not
ready for prime time, but it's got some nice
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