[Jscheme-user] Re: [Sisc-users] SISC vs Kawa

[Timothy J H. <tjh...@br...>]

On Nov 17, 2005, at 12:23 AM, Victor Rodriguez wrote:

> Hello Tim!
>
> 2005/11/16, Timothy John Hickey <ti...@cs...>:
> ..
>> Another option you can consider is JScheme (jscheme.sourceforge.net).
>> It has a very nice approach to Java integration (the javadot =
notation)
>> and is reasonably fast (of course as a JScheme developer I'm biased!)
>
> Ah! If only I had more time,
Time always is the problem!!
> I would take the time to look at all the
> alternatives. Nonetheless, I will try to take a look to JScheme. I had
> read about the dot notation before, and the website makes a good
> impression. (As does your recommendation!)
>
>> We've used it extensively in several projects, including a groupware
>> system
>>      http://groupscheme.sourceforge.net/grewpedit/
>> that I use every day in my lecture class. This program allows a dozen=20=

>> or
>> students with laptops in class to connect to my server and to jointly
>> coedit Java programs (without locking). I only mention this to point
>> out that
>> for this type of application, JScheme is certainly fast enough as =
most
>> of the computation is limited by human typing speed. (We are actually
>> rewriting grewpedit in Java so as to encourage Java developers to use
>> the
>> resulting collaborative editing library, while still allows Scheme
>> applications
>> to be developed using that code....)
>
> What a pity.. I take it then JScheme cannot "expose" Java classes, as
> D. Boucher mentions Kawa does?
We've made a try at exposing Java classes using the "dclass" package,
but it still needs some work.  One advantage of rewriting it in Scheme=20=

is
that we can then do a comparison and see exactly what the performance
gains are (or are not).  We'll probably rewrite it again in Scheme=20
(probably
using the dclass approach).  It will be interesting to see whether the=20=

project
gets more exposure after the Java rewrite since it will be packaged in=20=

a way
that is familiar to more people.....



>> JScheme is *not* R5RS compliant. It doesn't support full=20
>> continuations,
>> it doesn't support any SRFIs.  It is however a nice environment for
>> writing
>> Scheme code that interacts closely with Java code. It does have Last
>> Call
>> Optimization however.
>
> Do you mean tail recursion elimination?
Yes.

>
>> Anyway, just thought you might like some other ideas, but I didn't=20
>> want
>> to
>> clog up the SISC discussion list.
>
> Thanks a lot for taking the time to write to me, I really appreciate=20=

> it!
My pleasure.  Although there isn't much activity in JScheme development=20=

these
days, thats mainly due to the fact that it is in a pretty good place.=20
For my own
development, its got just about all the features I need....

Best wishes,
---Tim---


>
> Best Regards,
>
> Victor Rodriguez
>
>> Best wishes,
>> ---Tim---
>>
>>
>>
>>
>> On Nov 16, 2005, at 12:34 PM, Victor Rodriguez wrote:
>>
>>> 2005/11/15, Chris Dean <ct...@so...>:
>>>> [Let's assume this is not a troll.]
>>>
>>> Funny how a question like this can make people suspicious! :-)
>>>
>>> [snip]
>>>> You could also abandon Java and just use mzscheme.
>>>
>>> I can certainly abandon Java for personal projects, but the place I
>>> work is a Java shop for the foreseeable future.  Fortunately, SISC
>>> could be a way to introduce Scheme without giving up Java, and so I=20=

>>> am
>>> hopeful.
>>>
>>> I realize know that I left out the most important question to =
realize
>>> this goal: which has better Java integration, SISC or Kawa?
>>>
>>>> =46rom the responses so far, Kawa seems to have an advantage. The=20=

>>>> truth
>>> is, I'm attracted to SISC, since it supports more features, such as
>>> continuations, and from what I have seen so far (very little), Java
>>> integration seems to be easy.
>>>
>>> By the way, since you mention it, l do not necessarily have to use a
>>> Java-based Scheme for other projects. Is there a Scheme=20
>>> implementation
>>> with a nice library for doing GUI applications? (in Windows, Linux,
>>> both?)
>>>
>>> Thanks,
>>>
>>> Victor Rodriguez.
>>>
>>>
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>>
>>