Dear all,
In my project, I need (in order to share constant trees in rule
definitions), to define new variable during macro expansion.
What I do currently:
I keep all the constant definitions and the rules definitions in an
atom and at the end, I call a macro at top level that define
everything,
> Perhaps Jetty add a charset of iso-8859-1 if there isn't one in response
I think this behavior is specified in the servlet spec: "If no charset
is specified, ISO-8859-1 will be used"
http://download.oracle.com/docs/cd/E17802_01/products/products/servlet/2.5/docs/servlet-2_5-mr2/javax/servlet/Ser
Form-dot-clj is library for handling the display and validation of
forms. It Supports HTML5 forms, javascript validation and plain HTML.
It should work with most methods of generating HTML.
http://github.com/alienscience/form-dot-clj
In the last 10 minutes I have also found a library called "pour
Then, if Ring doesn't care of the charset also, there is no one, suck
as jetty, ring, compojure would take care of the charset except
myself. There are many peopole come from all kinds of country or
region who use ring, jetty and compojure. Let themselves set the right
charset manually by wrap? I d
One word, Why we would let Jetty set default charset to iso-8859-1,
Why not Compojure can set the default charset to utf-8? Isn't utf8 a
better choice? Is iso-8859 better than utf-8?
On 8月13日, 下午5时05分, ngocdaothanh wrote:
> > Perhaps Jetty add a charset of iso-8859-1 if there isn't one in respons
2010/8/13 limux :
> Then, if Ring doesn't care of the charset also, there is no one, suck
> as jetty, ring, compojure would take care of the charset except
> myself. There are many peopole come from all kinds of country or
> region who use ring, jetty and compojure. Let themselves set the right
> c
Given Oracle's lawsuit against Google for its use of the JVM, is
anyone else suddenly much more concerned about the states of Clojure
in Clojure and CLR compatibility? I know the former is an important
goal and also that the existence of the latter is due to heroic
volunteer efforts on behalf of a
I believe they do not sue over the JVM but over Dalvik.
The OpenJDK is,I think, a bit protected frompatents by its license and
the fact t has been distributed by the patents' owner.
However, Clojure in Clojure and better support of other platforms
would be great.
On Fri, Aug 13, 2010 at 12:13 PM,
You are right that there should be such a middleware in Ring.
On 8月13日, 下午6时40分, James Reeves wrote:
> 2010/8/13 limux :
>
> > Then, if Ring doesn't care of the charset also, there is no one, suck
> > as jetty, ring, compojure would take care of the charset except
> > myself. There are many peopo
Clojure runnes manly on the JVM. Oracle ownes (or has the patents) why
should anything change for clojure?
As far as Dalvik goes. Why should Clojure care the lawsuit is about
implementation details (as far as I understand) in the VM the basic
working will be the same.
Befor starting a real effort
On 13 Aug 2010, at 11:40, James Reeves wrote:
> I think it would be worth adding some charset setting middleware to
> Ring, though, and perhaps document this behaviour.
+1 -- character encoding is exactly the kind of thing one would want to set up
application-wide.
-Steve
--
You received thi
On Aug 12, 2010, at 7:52 PM, Tim Daly wrote:
I find that I'm horribly confused at this point about what a
protocol "is". Can someone use some other comp. sci. terms to
define this idea? I thought of them as Java interfaces with
default methods but clearly I'm wrong.
Coming from CL, the best
Hi all,
I'd like to build a clojure api to a mysql database. Have done this
previously using ruby's ActiveRecord which makes this very easy. clj-
record apparently provides the same kind of functionality.
The clj-record README shows how to create an interface to a table
(let's say "employees") wi
On Fri, Aug 13, 2010 at 1:17 PM, Rich Hickey wrote:
> not. They *sometimes* use interfaces in the implementation, but not always.
> At no point should one assume that because a type supports a protocol it
> 'isA' that protocol (or its interface).
>
That's very interesting. From a performance poin
Hi,
On 13 Aug., 14:51, jandot wrote:
> The clj-record README shows how to create an interface to a table
> (let's say "employees") with:
>
> (ns our-warehouse.employee
> (:require clj-record.boot))
>
> (def db ...a clojure.contrib.sql db-spec...)
>
> (clj-record.core/init-model
Hi,
On 13 Aug., 14:58, Nicolas Oury wrote:
> That's very interesting. From a performance point of view, is there a
> penalty involved in being in a case
> where the implementation does not use interfaces?
Using extend is slower, but more dynamic (read: mix-in via map merge
vs. hard-wiring thing
On Fri, Aug 13, 2010 at 2:46 PM, Meikel Brandmeyer wrote:
> Using extend is slower, but more dynamic (read: mix-in via map merge
> vs. hard-wiring things with inline definition).
>
>
Interesting...
Is there a link explaining how it is implemented in the extend
situation and how much slower it is?
@rich
What are your thoughts on the default implementation problem?
On Aug 13, 2:17 pm, Rich Hickey wrote:
> On Aug 12, 2010, at 7:52 PM, Tim Daly wrote:
>
> > I find that I'm horribly confused at this point about what a
> > protocol "is". Can someone use some other comp. sci. terms to
> > define
Any interest in moving this to clojure-contrib? It seems like a pretty
useful facility to have for a language like clojure that relies so
heavily
on lazy sequences.
Also, it's an easy way to implement a pretty common parallel
programming pattern, two threads communicating through a buffered
queue.
On Aug 12, 2:09 pm, Meikel Brandmeyer wrote:
> it's for technical reasons. Clojure wll then generate classes without
> a package, which causes them to be put in the default package. There
> are problems/restrictions/issues with classes in the default package.
> I'm not a JVM expert, so someone e
Thanks for responding. I'm glad to know this is about technical
limitations rather than some preference for deeper namespace
hierarchies.
On Aug 12, 2:42 pm, Armando Blancas wrote:
> The Java compiler doesn't like it; it won't import it from other
> packages. The JVM won't mind. When Clojure code
On Aug 13, 3:38 am, Stuart Halloway wrote:
> > Stu, (or anybody) I'd like to ask about a variation on this
> > point. How do you handle the case where you have a general
> > function that works for every type you'd like to implement a
> > protocol for (thus not technically needing to be in a proto
Hi,
this is my attempt to enter the Clojure debugger market :) Feedbacks are
welcome, and thanks to Kotka for his comment on the previous version. You
can find it at http://lambdebug.github.com
Adam
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Hi Nicolas,
> What I do currently:
> I keep all the constant definitions and the rules definitions in an
> atom and at the end, I call a macro at top level that define
> everything, in the dependency order.
Would you mind posting an example of this? That would definitely help
me to better underst
Hello all,
I've recently been working on a game development project in Clojure
which is now starting to bear fruit. I thought people here might be
interested, and that it would be worthwhile to share some experiences
and perspectives.
The project is a steampunk-themed strategy game, and a playabl
> Following Stuart's suggestion, I *could* just add a protocol called
> "PrettyPrintable" with one method and implement it on some of the new
> node types, but now I can't just call "pretty-print" on any node: I
> need to write another function that checks if it's a PrettyPrintable
> first and call
On Aug 13, 9:51 am, Mike Anderson
wrote:
> 2. It would be great to reduce the amount of memory allocations. Yes,
> I know memory is plentiful and GC is very cheap, but it's still not as
> cheap as stack allocation and any noticeable GC pauses are not good
> for the player experience in interacti
On Aug 13, 2010, at 13:13 , Seth wrote:
> Given Oracle's lawsuit against Google for its use of the JVM, is
> anyone else suddenly much more concerned about the states of Clojure
> in Clojure and CLR compatibility?
As far as I understand those things are absolutely not related, oracle isn't
suing
On Fri, Aug 13, 2010 at 7:13 AM, Seth wrote:
> Given Oracle's lawsuit against Google for its use of the JVM, is
> anyone else suddenly much more concerned about the states of Clojure
> in Clojure and CLR compatibility? I know the former is an important
> goal and also that the existence of the la
Hi,
Am 12.08.2010 um 21:48 schrieb Adam Schmideg:
> You can't call anything in the default package from a regular
> package. But I think (ns foo) would compile into a foo package, so
> this wouldn't be a problem.
No. It compiles to something like foo__init.class, which lives in the default
pac
I think it is all just posturing and gamesmanship, and will get
settled by Google paying some sort of fee. Unless Google can buy
someone with patents that Oracle is infringing then they can cross
license.
The only two implications I can think of are
(1) Hardly helpful for people's confidence in t
Easy enough to use via lein (thanks for uploading it to clojars BTW).
I think it deserves a place in cc.
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On Aug 13, 6:51 am, Mike Anderson
wrote:
> Hello all,
>
> I've recently been working on a game development project in Clojure
> which is now starting to bear fruit. I thought people here might be
> interested, and that it would be worthwhile to share some experiences
> and perspectives.
>
Looks g
On Aug 13, 11:32 am, Quzanti wrote:
>
> The only two implications I can think o
> (1) Hardly helpful for people's confidence in the Java Platform, if
> Oracle embarks on these kind of surprise antics. May push people
> towards CLR. If Oracle start getting aggressive, then everyone will
> start wor
I assumed he didn't use OpenGL because it's a 2d tile game?
Using OpenGL for 2d or 2.5d (isometric) is really only a good idea
if you can assume the target has hardware OpenGL acceleration.
Even then you may not want to do that, due to battery concerns.
On Fri, Aug 13, 2010 at 2:06 PM, Brian Carp
No problem Evan,
(def constants (atom ()))
(defn add-constant [name x]
(let [sym (gensym name)]
(reset! constants (cons ([sym x]) @constants)
sym
))
Then when I produce code, I call add-constant and use the returned symbol.
(I only use it to produce new constants, which is the ann
On Fri, Aug 13, 2010 at 2:51 PM, Mike Anderson
wrote:
> 2. It would be great to reduce the amount of memory allocations. Yes,
> I know memory is plentiful and GC is very cheap, but it's still not as
> cheap as stack allocation and any noticeable GC pauses are not good
> for the player experience i
Thanks for sharing, I will be trying out your lib. I am doing some web
thing.
Emeka
On Fri, Aug 13, 2010 at 10:11 AM, Saul Hazledine wrote:
> Form-dot-clj is library for handling the display and validation of
> forms. It Supports HTML5 forms, javascript validation and plain HTML.
> It should wo
> A more concrete example: say I've defined a protocol for AST nodes in
> 1.0 of a library, and later when developing 2.0 I discover it would
> have been a good idea to have a "pretty-print" method on nodes to show
> human-readable output. If the protocol had Trait-like characteristics
> I could ad
> This can be made a bit better by turning Escape Analysis on? Have you
> tried that?
>
> The G1 collector is supposed to have lower latency. Have you tried it?
>
> http://research.sun.com/jtech/pubs/04-g1-paper-ismm.pdf
(GC choice/tuning is a lng story, but some select suggestions follow)
Fi
Funny you should mention this - I was about to post a question about
my own game when I saw your article. My issue is, I assume someone has
written minimax and/or alpha-beta pruning in Clojure (or a java
library that's easy to interop with). My case is slightly different in
that the turn order is n
CLR also infringes Oracle's patents and the only reason why Oracle is not
likely to sue Microsoft is that Microsoft could do the same to Oracle.
See
http://jonathanischwartz.wordpress.com/2010/03/09/good-artists-copy-great-artists-steal/
Mono - the open source implementation of .NET also has unc
Paradigms of artificial intelligence programming: case studies in Common LISP
By Peter Norvig has a full chapter on this (ch18),
complete with code in Common LISP.
his "Artificial Intelligence: A Modern Approach" is also a good book
if you are interested in game AI. 3rd edition just came out recen
On Fri, 13 Aug 2010 23:08:40 +0400
Mikhail Kryshen wrote:
>
> I doubt it is possible to create runtime like JVM or CLR without patent
> problems.
Given that virtual machine technology "like"(1) the JVM and CLR have
been around since the 70s - long before even C++ ++ -- was a gleam in
Gosling's e
Sorry all -- I think my original message went slightly awry. The
announcement was a shock and quickly followed by waves of grumbling
from devs I follow on Twitter. While it's easy to extrapolate the
future from Oracle's past and this announcement, it's not necessarily
useful or accurate to do so. I
On Aug 13, 11:09 am, Wilson MacGyver wrote:
> I assumed he didn't use OpenGL because it's a 2d tile game?
> Using OpenGL for 2d or 2.5d (isometric) is really only a good idea
> if you can assume the target has hardware OpenGL acceleration.
>
> Even then you may not want to do that, due to battery
On Fri, Aug 13, 2010 at 4:51 PM, Brian Carper wrote:
> But there are some good OpenGL 2D game engines for Java, e.g.
> Slick[1]. There's also Penumbra[2] which nicely wraps LWJGL for
> Clojure. I ask this mostly because I'm making my own 2D game and
> somewhat torn between Java2D and OpenGL. Pe
Hi,
While going through the clojure.contrib.sql sources I noticed at
several places that a new transaction is started to execute the
operation under. Case at hand: do-commands, do-prepared, update-or-
insert-values.
As far I understand, transactions belong to the user. The user should
decide what
I'm in favor of any discussion that yields more support for Clojure on
CLR. :)
- David
On Aug 13, 3:36 pm, Seth wrote:
> Sorry all -- I think my original message went slightly awry. The
> announcement was a shock and quickly followed by waves of grumbling
> from devs I follow on Twitter. While
I played it, it was pretty fun.
I have UI recommendations. I couldn't tell the difference between the
enemy and my units.
I wish maybe you had some quick tips and recommended next actions so I
could get used to how the game works.
On Aug 13, 9:51 am, Mike Anderson
wrote:
> Hello all,
>
> I've r
so clients don't directly call the protocol functions they call
print-ast which then checks to see if PrettyPrintable has been
extended to the object and falls back to the default if it hasn't
On Thu, Aug 12, 2010 at 6:16 PM, Matthew Phillips wrote:
> On Aug 13, 3:38 am, Stuart Halloway wrote:
>
Greetings,
Suppose that I create a function that is designed to receive a map as
a parameter:
(defn add-ten [m]
(+ 10 (:amount m)))
but then later I want to make this function part of a protocol
(defprotocol AddTen
(add-ten [this]))
but I still want it to work when someone passes a plain m
IPersistentMap is an interface, which are sort of the java analog of
protocols, and in fact last I checked protocols generate named java
interfaces, so I think you're fine
On Fri, Aug 13, 2010 at 5:10 PM, Brenton wrote:
> Greetings,
>
> Suppose that I create a function that is designed to receive
>> 3. I think it would be great to have better support for circular
>> references - perhaps a two-pass compile? The reason this is
>> particularly acute in game development is that different subsystems
>> have quite a lot of inter-dependencies. AI evaluation system needs to
>> understand game state
I rarely run into this. The few times I have, I just do
(def g) ;creates a var g that is unbound
(defn f []
(g)) ;ok
(defn g [] ;f will call this
nil)
as shown by Rich at
http://markmail.org/message/vuzvdr4xyxx53hwr#query:+page:1+mid:tzsd3k6tvvc4ahoq+state:results
On Fri, Aug 13,
The (def g) in your example has the same effect as the (declare foo)
in my example.
I discussed two problems. The first problem, which you addressed, was
mostly just a warm-up for discussing a related problem that is more
severe. Where can I put (def g) so that two files can "require" each
other?
Suppose you make a file containing a
(def foo)
form for every defn in every file and then load that first?
Does that solve the circular reference problem?
Tim Daly
Eric Lavigne wrote:
The (def g) in your example has the same effect as the (declare foo)
in my example.
I discussed two problems.
I realize that. I was pondering why I don't run into the the 2nd problem.
In your code, how many files/name spaces are you creating?
And how many lines of code are in each file? I'm curious how you
organize your code.
On Aug 14, 2010, at 12:39 AM, Eric Lavigne wrote:
.
>
> I discussed two prob
** First announcement: a tutorial article on how to call Java classes
from Clojure
Several months ago, I asked a few questions about the use of proxy and
interoperability with Java. I'm pleased to say that with the help of
several members here, I was able to get past being "stuck" and finish
my pr
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