Can anybody point out good (idiomatic) examples of using protocols for
extending functionality of existing classes?
Thanks in advance.
Sincerely,
Ru
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Mark markaddle...@gmail.com writes:
Hi Mark,
Let's take a specific example: Suppose I have a Person table with id,
name and gender columns. Then, I have a Parent-Child table that
contains two id columns, both of which are foreign keys back into the
Person table. I'd could use the logic
ru soro...@oogis.ru writes:
Can anybody point out good (idiomatic) examples of using protocols for
extending functionality of existing classes?
Here's one that I have in my code:
--8---cut here---start-8---
(defprotocol VSeq
Protocol for types supporting
On Wednesday, November 23, 2011 10:42:13 PM UTC, Nils Bertschinger wrote:
It solves a
common problem, namely to drop the last element of a sequence and
reads better in this case than the equivalent idiom using drop-last.
I don't quite get it. How does (butlast x) read better than
Hi,
here is a nice example of a small DSL example, which also uses existing
data structures to denote different things in the DSL. It uses a protocol
under the hood, which is extended to the existing types.
https://github.com/cgrand/regex
Sincerely
Meikel
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Hi Meikel,
Thanks for this library.
I noticed that each bundle's keyset is cached via memoization. I believe
this prevents adding more bundle properties at runtime (e.g. during
interactive development).
Is there a way to reset a resource bundle? Is this something that you
might consider in a
Hi,
the ResourceBundles themselves are memoized by the Java runtime. You can
reset this cache with ResourceBundle/clearCache. Then the underlying
ResourceBundle will be retrieved again on the next access. Then the
memoization does not trigger. But the memoization itself is probably
premature
Hello,
what's the preferred way to override the toString method of a
ClojureScript record? I could use set! to change the toString fn
of a record after it has been initialized like this:
(defrecord MyRecord [name])
(let [record (MyRecord. Hello World)]
(set! record.toString (fn [] (:name (js*
what's the preferred way to override the toString method of a
ClojureScript record? I could use set! to change the toString fn
of a record after it has been initialized like this:
(defrecord MyRecord [name])
(let [record (MyRecord. Hello World)]
(set! record.toString (fn [] (:name (js*
I did not encounter that particular problem. But to compare, my
project file is
...
:dependencies [[org.clojure/clojure 1.3.0]]
:dev-dependencies [[jline 0.9.94]
[swank-clojure 1.3.0 :exclusions [org.clojure/
clojure]]]
...
and my current ~/.emacs.d/elpha folder
Thank you, Baishampayan. That's exactly what I was looking for ...
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I'm seeing the same behavior. The browser-repl script works fine from the
command line, but it hangs when run in emacs. Were you able to resolve
this?
Mine was working fine, but quit working a few weeks ago. I'm not sure what
changed.
- Wilkes
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/path/to/repl/script/browser-repl
NOT
/path/to/repl/script/repljs
I just tried browser-repl and it works just fine for me. What do you mean
by hangs? Do you see the REPL prompt?
David
On Thu, Nov 24, 2011 at 10:13 AM, Wilkes Joiner wilkesjoi...@gmail.comwrote:
I'm seeing the same
I can't speak to the duplicates issue, though I know it's common in
logic-based solutions. In specific cases, I suspect the problem could be
solved (or ameliorated) by tabling but I'm just getting into logic
programming so I'm not too sure about that.
Overall, your use case sounds very
Mark markaddle...@gmail.com writes:
I can't speak to the duplicates issue, though I know it's common in
logic-based solutions. In specific cases, I suspect the problem could
be solved (or ameliorated) by tabling but I'm just getting into logic
programming so I'm not too sure about that.
Thank you very much, Meikel!
Excelent example!
On 24 ноя, 14:27, Meikel Brandmeyer (kotarak) m...@kotka.de wrote:
Hi,
here is a nice example of a small DSL example, which also uses existing
data structures to denote different things in the DSL. It uses a protocol
under the hood, which is
On Thu, Nov 24, 2011 at 9:23 PM, David Nolen dnolen.li...@gmail.com wrote:
/path/to/repl/script/browser-repl
NOT
/path/to/repl/script/repljs
I just tried browser-repl and it works just fine for me. What do you mean by
hangs? Do you see the REPL prompt?
It's hanging for me as well right
The server appears to start up fine as the inferior-lisp process, but when
I enter an expression it is never evaluated. Looking in the web inspector,
there is one request to localhost:9000 that sits in a pending state. When
I run browser-repl from the command line, I see a series of request
On Thu, Nov 24, 2011 at 10:15 PM, Wilkes Joiner wilkesjoi...@gmail.com wrote:
The server appears to start up fine as the inferior-lisp process, but when I
enter an expression it is never evaluated. Looking in the web inspector,
there is one request to localhost:9000 that sits in a pending
On Thu, Nov 24, 2011 at 11:49 AM, Baishampayan Ghose b.gh...@gmail.comwrote:
On Thu, Nov 24, 2011 at 10:15 PM, Wilkes Joiner wilkesjoi...@gmail.com
wrote:
The server appears to start up fine as the inferior-lisp process, but
when I
enter an expression it is never evaluated. Looking in the
No dice on the browser refresh. I'm wondering if it something with my
emacs config. I'm going to strip it down to the simplest set up I can
manage and see if it resolves the issue.
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You said the REPL hangs, do you don't see a prompt?
David
On Thu, Nov 24, 2011 at 12:12 PM, Wilkes Joiner wilkesjoi...@gmail.comwrote:
No dice on the browser refresh. I'm wondering if it something with my
emacs config. I'm going to strip it down to the simplest set up I can
manage and see
I see a prompt. It just never evaluates an expression.
--
Wilkes Joiner
On Thursday, November 24, 2011 at 11:38 AM, David Nolen wrote:
You said the REPL hangs, do you don't see a prompt?
David
On Thu, Nov 24, 2011 at 12:12 PM, Wilkes Joiner wilkesjoi...@gmail.com
On Thu, Nov 24, 2011 at 11:08 PM, David Nolen dnolen.li...@gmail.com wrote:
You said the REPL hangs, do you don't see a prompt?
I was absolutely affected by the lack of prompt hanging for a while,
but it's working now.
Regards,
BG
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b.ghose at gmail.com
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And you don't see a JS error in the browser JS console?
On Thu, Nov 24, 2011 at 12:39 PM, Wilkes Joiner wilkesjoi...@gmail.comwrote:
I see a prompt. It just never evaluates an expression.
--
Wilkes Joiner
On Thursday, November 24, 2011 at 11:38 AM, David Nolen wrote:
You said the REPL
Another thing, it's important to delete the .repl folder that gets created
in your project, this may be stale especially if CLJS has changed.
David
On Thu, Nov 24, 2011 at 12:39 PM, Wilkes Joiner wilkesjoi...@gmail.comwrote:
I see a prompt. It just never evaluates an expression.
--
Wilkes
The browser repl in the samples directory works fine for me in emacs. I'm
guessing it has something to do with my app. I'll keep poking around. Thanks
for your help. If I figure it out, I'll post a follow up here.
--
Wilkes Joiner
On Thursday, November 24, 2011 at 11:50 AM, David Nolen
In your html, a script tag seems to have to be in body tag, not head
tag, when you use browser repl.
If you use Chrome, look at a console in Developer Tools.
Is there an xpc error?
2011/11/25 Wilkes Joiner wilkesjoi...@gmail.com:
The browser repl in the samples directory works fine for me in
Or you should hook load event.
(ns foo
(:require [clojure.browser.repl :as repl]
[goog.events :as gevents]))
(defn main [] (repl/connect http://localhost:9000/repl;)
(gevents/listen js/window (aget gevents/EventType LOAD) main)
2011/11/25 Takahiro fat...@googlemail.com:
In your
I got it working, sort of. If I launch inferior-lisp from the
$CLOJURESCRIPT_HOME/samples/repl/src/repl/test.cljs, then I can pull up my
apps page that calls repl/connect and everything works fine from there on
out. If I launch inferior-lisp from the cljs in my project, the repl
appears to
Did you remember to include utf-8 meta tag in your html page?
On Thu, Nov 24, 2011 at 3:00 PM, Wilkes Joiner wilkesjoi...@gmail.comwrote:
I got it working, sort of. If I launch inferior-lisp from the
$CLOJURESCRIPT_HOME/samples/repl/src/repl/test.cljs, then I can pull up my
apps page that
Drift is a Rails like migration library for Clojure.
I've recently released version 1.4.0 of Drift which includes:
A new Java interface. You can now run Drift migrations, find out the
database version, or determine the highest migration number from java.
User generated migration numbers and
Drift DB is a clojure database library focused on migration functions.
With Drift DB you can create tables, drop tables, add columns to
tables, remove columns from tables, query tables, and, though it is
not the focus of Drift DB, you can insert, update, delete and select
rows from tables.
The
Ah, I see. Thanks.
On 24 November 2011 23:06, Meikel Brandmeyer (kotarak) m...@kotka.de wrote:
Hi,
the ResourceBundles themselves are memoized by the Java runtime. You can
reset this cache with ResourceBundle/clearCache. Then the underlying
ResourceBundle will be retrieved again on the next
But we still don't know why it behaves like this and for what
reason. does (:a 1 2) returns 2 make any sense??
On Nov 24, 3:30 pm, Sean Corfield seancorfi...@gmail.com wrote:
On Wed, Nov 23, 2011 at 9:48 PM, Alan Malloy a...@malloys.org wrote:
Other way round. It behaves like a keyword,
Hello folks,
I starting to do some simple file IO stuff with Clojure and was
wondering which namespace was considered the best one to use,
contrib.duck-streams on contrib.io? There seems to be a bit of
overlap between the two and at least some of the functions with the
same names have different
Hi,
the usual argument is, that this statement itself is undefined. 1 is not a
collection. So it is not in the domain of the keyword (seen as a function).
Keywords could throw an exception, or behave as they behave. There is no
right solution. Just different opinions. And Rich obviously
I think clojure.java.io is latest one.
http://clojure.github.com/clojure/clojure.java.io-api.html
Since clojure.java.io returns raw java object, you need to use java
interop directly for write-lines etc.
BTW clojure.java.io is beautiful example of protocol, I think.
2011/11/25 Daniel Glauser
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