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Hi all,<br>
If you don't like the Squeak language as it is, all you need to do is
to write a new compiler and use it for compiling the methods of your
own classes. Many different languages can co-exist in the same image
without problems. VW has done it; the methods of some classes were
written in SQL when I looked at it several years ago. I've done it when
I got rid of the annoying class companion, the metaclass.
(Several of my classes shared the same metaclass). The experiment
didn't lead where I wanted to go, so I abandoned it. My BabyIDE
environment for DCI programming does it by extending Traits with
knowledge about the (DCI) Context of the methods. None of it exactly
straight forward, but doable.<br>
<br>
Here are some details if you're interested<br>
<br>
Most programming languages such as Java are used to specify complete
programs. The 'original' of a program is its text form. A compiler
translates to a binary form.<br>
<br>
There is no Smalltalk language in this sense. The 'original' of a
program is its binary form as an object structure in the image. The
creation of a new class object is done by a process in this image.
Usually, this is done by a command in the Browser. The
common textual form for defining a new class is a 'doIt'; a statement
to be interpreted by the image. The so called Smalltalk language is
used to specify methods; one method at the time. The compilation and
installation of a method is done by the class; the methods of different
classes can be specified in different languages.<br>
<br>
So, if you really want a different syntax, you can write your own
compiler and share it with other people who share your interests.
There's no need for an up-front decision and translation of all legacy
code.<br>
<br>
Many interesting experiments could be made this way.<br>
--Trygve<br>
<br>
<br>
<br>
<br>
On 2011.06.01 03:24, Juan Vuletich wrote:
<blockquote cite="mid:4DE594B5.8040605@jvuletich.org" type="cite"><a class="moz-txt-link-abbreviated" href="mailto:info@tomsik.cz">info@tomsik.cz</a>
wrote:
<br>
<blockquote type="cite">On Tue, 31 May 2011 22:01:14 +0200, Randal L.
Schwartz <a class="moz-txt-link-rfc2396E" href="mailto:merlyn@stonehenge.com"><merlyn@stonehenge.com></a> wrote:
<br>
<br>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">"info@tomsik" == info@tomsik cz
<a class="moz-txt-link-rfc2396E" href="mailto:info@tomsik.cz"><info@tomsik.cz></a> writes:
<br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<br>
info> In short: 1.) binary messages make sense only for math. I've
never
<br>
info> implemented even one binary message, have you? (for non-math
<br>
info> things)
<br>
<br>
info> Why not step further and make dsl for equations? let them live
<br>
info> outside of language. (with everything common to math world)
<br>
<br>
info> 2.) keyword messages with more than 2 arguments are just ugly
-
<br>
info> they smell in the "missing another object" way. And 2
arguments
<br>
info> are rare too. I would allow one argument at top.
<br>
<br>
So, you've now eliminated both possible ways of creating a new Point:
<br>
<br>
3 @ 4
<br>
Point x: 3 y: 4
<br>
<br>
</blockquote>
<br>
I'll go few steps further to show big-picture in hypothetical syntax
<br>
(one-argument closures with argument as implicit receiver, no returns
-> CPS)
<br>
<br>
Point new: [x: 3, y: 4, printOn: aStream].
<br>
<rcvr> <msg>: <arg>[<msgForNew>: <arg>,
<msgForNew>: <arg>, <msgForNew>: <arg>].
<br>
concepts: always left-to-right (receiver->message->argument), no
parentheses -> uniformity
<br>
returns: nothing, does something
<br>
</blockquote>
<br>
So, #new: creates a point without values for x and y... What if I want
to only build objects that make sense, meaning that their instance
variables must conform to some invariant defined by the class?
<br>
<br>
<blockquote type="cite">vs.
<br>
(Point x: 3 y: 4) printOn: aStream.
<br>
(<rcvr> <msg>: <arg> <key2>: <arg2>)
<msg>: <arg>.
<br>
concepts: sometimes left-to-right, depending on parentheses and
message-type (syntax)
<br>
returns: aPoint, which won't be used anyway, because it was printed
already.
<br>
</blockquote>
<br>
Easy choice. This is much nicer.
<br>
<br>
Cheers,
<br>
Juan Vuletich
<br>
<br>
<blockquote type="cite">
<blockquote type="cite">I wonder what language we would end up with
if all of your (even
<br>
conflicting) goals were implemented.
<br>
<br>
The more syntax you eliminate, the more you end up with LISP. Maybe
you
<br>
want LISP... you know where to find it!
<br>
<br>
</blockquote>
<br>
I'm not saying "let's drop objects", I'm saying "let's simplify
language, let's drop unused/misused/bad-in-long-process things"
<br>
<br>
<br>
<br>
-----
<br>
No virus found in this message.
<br>
Checked by AVG - <a class="moz-txt-link-abbreviated" href="http://www.avg.com">www.avg.com</a>
<br>
Version: 10.0.1375 / Virus Database: 1509/3663 - Release Date: 05/27/11
<br>
<br>
<br>
</blockquote>
<br>
<br>
<br>
</blockquote>
<br>
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<div class="Section1">
<p class="MsoNormal" style=""><span class="SpellE"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Trygve</span></span><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">
Reenskaug<span style=""> </span>mailto: <span class="SpellE"><a class="moz-txt-link-abbreviated" href="mailto:trygver@ifi.uio.no">trygver@ifi.uio.no</a></span></span><span
style="font-size: 10pt; font-family: Arial;"><o:p></o:p></span></p>
<p class="MsoNormal" style=""><span class="SpellE"><span class="GramE"><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB">Morgedalsvn</span></span></span><span
class="GramE"><span style="font-size: 10pt; font-family: Arial;"
lang="EN-GB">.</span></span><span
style="font-size: 10pt; font-family: Arial;" lang="EN-GB"> 5A <span
style=""> </span> <a class="moz-txt-link-freetext" href="http://folk.uio.no/trygver/">http://folk.uio.no/trygver/</a><o:p></o:p></span></p>
<p class="MsoNormal" style=""><span
style="font-size: 10pt; font-family: Arial;">N-0378
Oslo<span style=""> </span>Tel: (+47) 22 49 57 27<o:p></o:p></span></p>
<p class="MsoNormal" style=""><span class="SpellE"><span
style="font-size: 10pt; font-family: Arial;">Norway</span></span><span
style="font-size: 10pt; font-family: Arial;"><o:p></o:p></span></p>
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