In Clojure, when you def a variable, the REPL prints the name of the
variable rather than the value.
In Clojurescript, when you def a variable, the REPL prints the value
assigned to the variable.
This is problematic when working with lazy values. Is there any particular
reason the Clojurescript
Instead of using alter-var-root you could use the binding form. On this
subject of factory methods you could find useful the following article,
expecially the with-implementation macro:
http://pragprog.com/magazines/2011-07/growing-a-dsl-with-clojure
IMHO that solution should not prevent the
I've compiled your code without problems in the CLJS REPL, and embedded in
a CLJS app I'm working on. Do you get the same bug when you evaluate your
code snippet using the script/repljs?
Raju
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From the stacktrace and some source reading, it seems clj-stacktrace
passes null as class-name in clj-stacktrace.core/clojure-ns, which
passes it to a regex function.
That should not even be possible, because it passes the same value to
clj-stacktrace.core/clojure-code?, which would already throw,
Also, are you running the latest version of clj-stacktrace?
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When a new technology (a programming language) comes out, initially
there are very few people who are really proficient in it. One can
learn by one's own, but tremendous learning acceleration can be gained
if one pairs with more experienced devs than oneself.
So I'd like to ask: is there any
Do you have a more specific example of why this is a problem?
On Monday, May 14, 2012, Mark Engelberg wrote:
In Clojure, when you def a variable, the REPL prints the name of the
variable rather than the value.
In Clojurescript, when you def a variable, the REPL prints the value
assigned to
Herwig thanks for your comments.
I was able to solve the problem by doing the following. I created a new
source directory and changed the src path for lein-cljsbuild to the new src
dir. Then I started saving one file after another to the dir. All this
while I had lein cljsbuild running as
Over the weekend there was some talk in IRC about why clojure-py
didn't use Clojurescript as the basis for its compiler. The reasons I
had, basically boiled down to this: Clojurescript is written in
Clojure-JVM and as such requires that the JVM be installed, and also
requires that all macros be
Raju thanks for your comments. I tried building using cljsbuild and the
code is now compiling without any errors.
I am curious to know, when you say script/repljs, are you referring to the
browser based repl that cljsbuild provides access to or a cmd based repl?
How do you access the latter?
Hi,
I am using lein-cljsbuild to compile the cljs code. I see reference to a
deps.js file that is added after the tag in which I have included the
generated js file. The browser naturally fails to find the file as it does
not exist.
What is the deps.js file and how do I resolve its 404
James,
For learning, I'd recommend 4clojure.com and compare your solutions with
solutions submitted by other people. Also, if you have the cash, you could
pay clojure/core to pair with you. Unfortunately, I've never heard of
anyone doing that kind of thing as a mutually beneficial situation - (you
Hi Jay,-
I agree, paying to sweep someone's dojo does sound a bit strong.
/ James
On May 14, 3:24 pm, Jay Fields j...@jayfields.com wrote:
James,
For learning, I'd recommend 4clojure.com and compare your solutions with
solutions submitted by other people. Also, if you have the cash, you
PS. My last post wasn't clearly formulated, so let me re-phrase that:
I think that paying clojure/core to pair up is a perfectly legit
solution if one wants to jump ahead of the curve. My point was that I
wish the sweeping the dojo model was more widespread (one does
whatever other work there is
I think the current fix is to add this JS declaration before you
import your cljs generated js file. IIRC, this is only needed when
building without advanced optimizations.
script type=text/javascript
var CLOSURE_NO_DEPS = true;
/script
script type=text/javascript src=js/myapp.js/script
AJ
James,
Another way - I would recommend contributing to one of the Clojure contrib
libraries or an open source Clojure project. It's a great way to
familiarize yourself with non-trivial Clojure code, get feedback and offer
something up to the community.
You'll definitely get feedback from me if
Sounds reasonable. Is there some specific direction you are suggesting?
David
On Mon, May 14, 2012 at 8:35 AM, Timothy Baldridge tbaldri...@gmail.comwrote:
Over the weekend there was some talk in IRC about why clojure-py
didn't use Clojurescript as the basis for its compiler. The reasons I
Also discovered I can prefix `java -cp ...` with `rlwrap` to get back a
nice REPL experience.
-S
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Hi David,-
thanks for the feedback. To jump in and start augmenting non-trivial
Clojure code sounds like a serious task. I think the prerequisite for
that would be to be able to read and write trivial Clojure code, which
is where I'm at right now!
But I'll definitely study the libraries you
On Mon, May 14, 2012 at 10:41 AM, James abbott...@gmail.com wrote:
thanks for the feedback. To jump in and start augmenting non-trivial
Clojure code sounds like a serious task. I think the prerequisite for
that would be to be able to read and write trivial Clojure code, which
is where I'm at
Lemur is a tool to launch hadoop jobs locally or on EMR, based on a
configuration file referred to as a jobdef. The jobdef file describes your
EMR cluster, local environment, pre- and post-actions (aka hooks) and zero
or more steps (jobs). Lemur reads your jobdef, at the end of your jobdef
Much of the more recent code in Clojure is very cross platform. Stuff
like reducers can simply be copied over, fixed up a bit, and it runs.
I wonder how is the fork/join part carrier over for reducers.
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On Mon, May 14, 2012 at 2:32 PM, Armando Blancas abm221...@gmail.comwrote:
Much of the more recent code in Clojure is very cross platform. Stuff
like reducers can simply be copied over, fixed up a bit, and it runs.
I wonder how is the fork/join part carrier over for reducers.
Sounds
Sam, thanks for the pointer to quilt. Looks really cool. I'm starting to
imagine a project with quilt and overtone together!
Regards,
Bill
On May 11, 2012 3:34 PM, Sam Aaron samaa...@gmail.com wrote:
In addition to following up on all the great suggestions above, I'd hack
about with Quil; it's
This might not sound glamorous, but reading books, and reading great code,
and code reviews is a great way to get up to speed. The explanations found
in the Joy of Clojure, and other books have been highly edited and refined;
if I ever paired up with someone, I doubt my ad-hoc verbal
On Mon, May 14, 2012 at 7:45 PM, James abbott...@gmail.com wrote:
When a new technology (a programming language) comes out, initially
there are very few people who are really proficient in it. One can
learn by one's own, but tremendous learning acceleration can be gained
if one pairs with
Are there any Clojure dojos near where you live? We have a monthly one in
London, which is a great way for people of different experience levels to
come together.
Cheers,
Chris
On 14 May 2012 12:45, James abbott...@gmail.com wrote:
When a new technology (a programming language) comes out,
I ran across this behaviour today:
shackles.examples= (import '[clojure.lang Seqable])
clojure.lang.Seqable
shackles.examples= (deftype Foo [] Seqable (seq [this] ()))
shackles.examples.Foo
shackles.examples= (empty? (Foo.))
false
shackles.examples= (deftype Bar [] Seqable (seq [this] nil))
Having another little problem, any help appreciated:
alan@shotwell /cygdrive/c/Workspaces/Clojure-lein
$ lein2 new startingclojure
Generating a project called startingclojure based on the 'default' template.
java.lang.IllegalArgumentException: No implementation of method:
:make-reader of
hi,
Just a couple of paragraphs further on in the book (p. 137):
In our definition of times-n, we created a local x using let and closed
over that instead of closing over the argument n directly. But this was
only to help focus the discussion on other parts of the function. In fact,
closures
The docstring of if-let is as follows:
bindings = binding-form test
If test is true, evaluates then with binding-form bound to the value of
test, if not, yields else
I think it should be mentioned in the docs that if-let and when-let support
only *one binding*, not multiple bindings (like for
Hi,
In cygwin on win7 I get this:
_
$ lein2 upgrade
The script at /cygdrive/c/Users/alan/bin/lein2 will be upgraded to the
latest preview version.
Do you want to continue [Y/n]? Y
Upgrading...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload
Hi,
I'm new to Clojure. I've been unsuccessful in finding a clear answer or
getting it to work (might just have done it incorrectly, since I'm still
learning). I understand that you can add metadata to an object,
with-meta, and to a variable or parameter, ^{:. However, I would like
to apply
I have a few issues which are all related. I'll do my best to explain them
one by one.
I'd like to use the latest version of the jOGL library with Clojure 1.3 /
Leiningen 1.7.1 / OpenJDK 1.6.
After getting the jars from joGL's website, how can I get the library
exposed to leiningen and
On Fri, May 11, 2012 at 9:04 PM, Kevin Lynagh ke...@keminglabs.com wrote:
Announcing C2, a data visualization library inspired by D3.js
C2 is not a charting library; there are no plotting functions like
scatterplot or piechart .
Instead, C2 is a collection of scales, map projections, and
http://www.lambdassociates.org/blog/klambda.htm suggests a possible
bootstrapping mechanism, some kind of reduced set of clojure
functionality ur-clojure that is designed to be easy to write and
interpreter for, and a compiler backend that generates ur-clojure,
after compiling the
On Mon, May 14, 2012 at 4:47 AM, Chris Ford christophertf...@gmail.com wrote:
Are there any Clojure dojos near where you live? We have a monthly one in
London, which is a great way for people of different experience levels to
come together.
FYI, the guy who used to run the London Clojure dojo
Check out lein-localrepo - a way to install arbitrary JARs in your
local Maven repo cache.
On Sat, May 12, 2012 at 9:36 AM, Mads Andreas Elvheim
mads.elvh...@gmail.com wrote:
I have a few issues which are all related. I'll do my best to explain them
one by one.
I'd like to use the latest
On Sat, May 12, 2012 at 3:22 PM, Alan Shaw noden...@gmail.com wrote:
In cygwin on win7 I get this:
Could you open an issue on Github for this?
I don't know enough about Windows to say what's going on here, but if
it's on the issue tracker there's a better chance of getting it
figured out if
Depending on who else you are wanting to share the dependency with,
you may find Phil Hagelberg's s3-wagon-private useful:
https://github.com/technomancy/s3-wagon-private
On Mon, May 14, 2012 at 4:23 PM, Sean Corfield seancorfi...@gmail.com wrote:
Check out lein-localrepo - a way to install
You can create a virtual repository in your project's source tree and add
it to your project as an extra repository with the file: protocol.
Technique described (for Maven) here:
https://devcenter.heroku.com/articles/local-maven-dependencies
-S
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The empty list () is an object, and objects are truthy.
`seq` on any empty collection is defined to return nil. So your definition:
(deftype Foo [] Seqable (seq [this] ()))
should return nil instead of the empty list.
`(next x)` is equivalent to `(seq (rest x))`
-S
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When I first started my project I tried using defrecord and defprotocol for
various data structurs and when I wanted an easy serialization function I
used pr-str and read-string, this worked great!... until I wanted to do
some refactoring and move some types to another namespace. After
(def tree (function-that-produces-an-enormous-tree 2))
Want do that in Clojurescript, and you'll be treated to tons and tons of
nested tree data printed to the REPL.
Want to time something that's supposed to be lazy, to make sure it's really
lazy, and see how long it takes to produce the eager
On Mon, May 14, 2012 at 7:27 PM, Mark Engelberg mark.engelb...@gmail.comwrote:
(def tree (function-that-produces-an-enormous-tree 2))
Isn't doing this at the top level bad form?
So there are a couple examples of things that are harder to do when your
REPL prints the values that are
On Friday, May 11, 2012 5:33:22 PM UTC-4, Stuart Sierra wrote:
What other tricks do you have for speeding up your development cycle with
Clojure?
I have a similar situation, where I've had to restart a repl a *lot* for a
particular program (several times a day, like 10-20 times and
On Mon, May 14, 2012 at 4:41 PM, David Nolen dnolen.li...@gmail.com wrote:
On Mon, May 14, 2012 at 7:27 PM, Mark Engelberg
mark.engelb...@gmail.comwrote:
(def tree (function-that-produces-an-enormous-tree 2))
Isn't doing this at the top level bad form?
The purpose of a REPL is for
I think this is a pretty valid feature request.
The main question is, can this be done without having vars in clojurescript.
One way to do it is to surpress output somehow, under certain conditions.
Either as a token at the end of a repl input, or in the semantics of def itself.
I don't have
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