> The def was for legibility (or I was going for legibility). Speaking
> of redefing, is there a way to block a redef so I or someone else
> doesn't monkey-patch a function?
You can set a validator on the Var to prevent accidents. However,
someone who really wants to redefine a function can just
Hi,
How can I easily unmap all namespaces in a repl or swank? (so I can
continue working as if I have just started up the REPL, no matter what
I've "use"-d previously)
Istvan
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On Tue, Mar 30, 2010 at 10:36 AM, Istvan Devai wrote:
> Hi,
>
> How can I easily unmap all namespaces in a repl or swank? (so I can continue
> working as if I have just started up the REPL, no matter what I've "use"-d
> previously)
>
> Istvan
I posted a bit of a lengthy exposition on this topic l
If this is a dumb question, let me apologize in advance. The thing is,
I've been trying to learn Clojure in my spare time, and, following the
advice of several Clojure blogs, started by reading Halloway's book
and playing around a bit at the REPL, which is all well and good, but
now I'm ready to ta
On Mon, Mar 29, 2010 at 11:39 PM, Daniel wrote:
> Is there a less cumbersome way to get a load of files on the classpath
> than manually editing the .clojure file?
Well, I have a ~/lib/clojure directory and a clj script that
automatically puts that directory and all .jar's in it on the
classpath.
On Mar 29, 2:23 pm, strattonbrazil wrote:
> I do something wrong, I have to read through the stack which sometimes
> just says there's an error at line 0, which doesn't help me much.
One problem is that the compiler can't keep track of line numbers in
the REPL (or SLIME). If you load your code f
On Mar 30, 4:36 am, Istvan Devai wrote:
> How can I easily unmap all namespaces in a repl or swank?
The following will give you a fresh "user" namespace:
(in-ns 'clojure.core)
(remove-ns 'user)
(ns user)
-SS
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Daniel writes:
> Am I going about this the wrong way? Is there an easier way to explore
> existing open-source projects? I
Try this for any leiningen project (check for the existence of a
project.clj file). I'm assuming you're using a unixy operating system.
First and once-off, install leining
> So here are my questions:
>
> Am I going about this the wrong way? Is there an easier way
> to explore existing open-source projects? I Is there a less
> cumbersome way to get a load of files on the classpath than
> manually editing the .clojure file? How do I tell the REPL
> where to find r
Take a look at the dependency management tools. Most open-source
Clojure projects use either Maven and Leiningen. Both use the same
dependency model and provide similar capabilities for starting a REPL
with the classpath configured automatically.
-SS
On Mar 29, 11:39 pm, Daniel wrote:
> If t
I am having trouble with the re-seq regular expression form. I am not
an expert on regex, so this is probably part of my problem. I have a
k12 text file, basically it is hex broken up by '|' . I would like to
grab all the hex between two hex numbers (sample text below). For
example, I might wa
Hi,
On Mar 30, 3:45 pm, Stuart Sierra wrote:
> Take a look at the dependency management tools. Most open-source
> Clojure projects use either Maven and Leiningen. Both use the same
> dependency model and provide similar capabilities for starting a REPL
> with the classpath configured automatic
Hi,
you have to escape the |.
user=> (re-seq #"49\|00\|([0-9a-f|]+)\|a4\|ff" "a5|a5|49|23|49|00|12|
fc|5e|a4|ff|a7|49|00|ee|d3|a4|ff|ae")
(["49|00|12|fc|5e|a4|ff|a7|49|00|ee|d3|a4|ff" "12|fc|5e|a4|ff|a7|49|00|
ee|d3"])
However this will be greedy...
Sincerely
Meikel
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Hi all,
I would like to announce clj-tagsoup, a simple cl-html-parse workalike
for Clojure.
A quick example:
(parse "http://example.com";)
=> [:html {}
[:head {}
[:title {} "Example Web Page"]]
[:body {}
[:p {} "You ha
Hi,
Is it possible to remap the name of a class or package import?
Ideally
I'd like to say something like (import [[java.util :as ju] ArrayList
List]) and then use (ju.ArrayList.) to refer to the class. I recall
reading Rich doesn't like auto-imports of all classes in a package or
of renaming cla
The result is a little bit strange still, since I am getting
dupliates. First, it returns the string I want
49|00|12 12|a9|a4|ff
but then it also returns the same string without the first and last 4
characters, e.g.
12|12|a9|
Also, how come I don't need to escape the | inside the pare
Parentheses capture - anything that matches a parenthesized portion of
a regular expression is returned as part of the result of the match:
user=> (re-seq #"a(.)c" "abc")
(["abc" "b"])
If you don't want that behavior, you can use the special non-capturing
syntax, (?:...):
user=> (re-seq #"a(?:.)
Addendum: I highly recommend Jeffrey Friedl's book
_Mastering_Regular_Expressions_ if you want to learn how to use
regexes well. There are also a number of introductions/tutorials
online, but I'm not familiar enough with them to recommend any.
On Tue, Mar 30, 2010 at 12:50 PM, Mark J. Reed wrote
The labrepl now has much better "getting started" instructions, thanks
to everyone who pitched in. But this begs the question: Why hide the
getting started instructions in a single project? So, I am working to
create definitive instructions for getting started with Clojure in a
variety of e
I think Clojure should provide more information when certain error
conditions occur. Example:
(when-not (= (Integer. (:userid json)) (Integer. (:userid a-user)))
NOTE: (:userid a-user) is always some sort of number.
(:userid json) is always a String.
After testing (Integer. (:userid a-user)) _so
Hi,
I wrote an blog post on how to use clojure in gradle.
That may be of use as part of the "getting started"
http://m.3wa.com/?p=464
Thanks,
On Tue, Mar 30, 2010 at 1:12 PM, Stuart Halloway
wrote:
> The labrepl now has much better "getting started" instructions, thanks to
> everyone who pitc
thx that works great! i guess I can also just leave out the
parenthesis all together.
but, what if i wanted just the portion inside?? the duplicate I
wanted to get rid of?
also any way to return the sequence without all those bars or do i
have to use a seperate regex and or filter?
On Mar 30,
Leaving out the parentheses changes the meaning because they group as
well as capture. #"a(b|c)d" matches either "abd" or "acd". #"ab|cd"
matches either "ab" or "cd".
On Tuesday, March 30, 2010, Glen Rubin wrote:
> thx that works great! i guess I can also just leave out the
> parenthesis all t
Just a thought. Would it be more effective to create a GitHub page for this?
Assembla is cool for ticketing but it's kinda ugly and unfriendly. For
example I think something like this:
http://mmcgrana.github.com/2010/03/clojure-web-development-ring.html
is much friendlier and the kind of base-lev
Thanks, that was insightful. To recap, subclassloader is a
optimization to reduce the startup time of launching a new clojure
instance from leiningen. In addition, I learned that computing the
classpath was conducted in clojure code. I see now that the bash
script is just a bootstrapping tool to ge
Hi all,
Today we hosted the second weekly Clojure workshop at my office in
Dundee, Scotland. Prior to the event I thought we'd use labrepl as a
convenient way to deliver some simple tutorial/exercises along with a
working Clojure environment.
The event was reasonably successful but there were so
On 30 March 2010 14:37, Stuart Sierra wrote:
> On Mar 29, 2:23 pm, strattonbrazil wrote:
>> I do something wrong, I have to read through the stack which sometimes
>> just says there's an error at line 0, which doesn't help me much.
>
> One problem is that the compiler can't keep track of line num
If you're not stuck on using Compojure, you can try Conjure which will
includes all of the dependencies in the jar.
To start a hello world app:
1. Download conjure.jar from: http://github.com/macourtney/Conjure/downloads
2. java -jar conjure.jar hello_world
3. cd hello_world
4. ./run.sh script/se
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