Xotcl February 2001

xotcl@alice.wu.ac.at

6 participants
14 discussions

The debian packages
by Kristoffer Lawson 27 Mar '01

27 Mar '01

Just tested the debian packages for XOTcl 0.83 by Teemu and they seem to be working fine now, including the pkgIndex.tcl generation, which was a problem before. - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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problem with filter & destroy
by Kristoffer Lawson 28 Feb '01

28 Feb '01

(version: 0.83) Class Foo Foo instproc destroy {args} { puts "destroy args: $args" next } Foo instproc method {args} { puts "method args: $args" next } Foo instproc filterProc {args} { puts "filter args: $args" next } Foo filter filterProc [~] ob method suk filter args: suk method arg: suk [~] ob destroy blah filter args: blah destroy args: Without the filter the arguments to destroy are sent as normal. So the filter is having some effect on how destroy is handled. Also, I've received the following error when playing around with this situation: invalid command name "self" while executing "self" invoked from within "puts stderr "[self]: Error in instproc destroy $::errorCode $::errorInfo"" invoked from within "ob destroy data" - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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Fwd: European Tcl/Tk User Meeting
by Uwe Zdun 27 Feb '01

27 Feb '01

Hi all, FYI, we'll have a XOTcl Tutorial scheduled at the 2. European Tcl Conference. There are still some open slot ... so there's still a chance to present your XOTcl applications :) Just send an abstract to Carsten Zerbst (zerbst(a)tu-harburg.de). Greetings, Uwe ---------- Fwd ---------- Subject: European Tcl/Tk User Meeting Date: Tue, 27 Feb 2001 17:17:52 +0100 From: Carsten Zerbst <zerbst(a)tu-harburg.de> Dear Ladies and Gentleman, this is the a preliminary schedule for the Tcl/Tk User Meeting. I still need some papers and a speaker for the keynote. Bye, Carsten -- Dipl. Ing. Carsten Zerbst | Come to the | 2. European Tcl Conference 2001 ! zerbst(a)tu-harburg.de | http://www.tu-harburg.de/~skfcz | http://www.tu-harburg.de/skf/tcltk ------------------------------------------------------- -- Uwe Zdun Specification of Software Systems, University of Essen Phone: +49 201 81 00 332, Fax: +49 201 81 00 398 zdun(a)xotcl.org, uwe.zdun(a)uni-essen.de

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Automatic caching / XOTcl @ Wiki
by Kristoffer Lawson 21 Feb '01

21 Feb '01

I built a small class called Cacheable that can be joined with other classes and objects. With it you can specify certain methods from which the returned result should be cached (and for how long). You can also specify invalidation methods which cause the object's cache to be empties. All this happens transparently from the methods' point of view. I put the code up at the Tcler's Wiki: http://mini.net/cgi-bin/wikit/1298.html If anyone else has some neat examples, it might be a good idea to add them to the XOTcl page I put up there: http://mini.net/cgi-bin/wikit/1297.html - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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Problem with info args
by Kristoffer Lawson 17 Feb '01

17 Feb '01

Code: Class Foo Foo instproc init {} { puts [[self] info args myMethod] } Foo instproc myMethod {anArgument} {} Foo ob ==> expected a tcl method name but got myMethod This works as expected if I simply create an Object as follows: Object foo foo proc myMethod {anArgument} {} foo info args myMethod ==> anArgument Is this behaviour to be expected, and if so, why? - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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performance
by Kristoffer Lawson 13 Feb '01

13 Feb '01

Just for interest I implemented one of the OO tests from Doug's shootout (http://www.bagley.org/~doug/shootout/) in XOTcl to see how it would fare. Specifically it was the method call speed test (http://www.bagley.org/~doug/shootout/bench/methcall/). I have attached my code to this email. According to my own tests, it didn't do terribly well, but it's difficult to say whether this is a limitation of Tcl (which doesn't do very well in several of those speed tests) or just a sign that there might be some room for optimisation in XOTcl itself. Now what would be interesting would be a comparison with iTcl -- but as I don't know it I'll leave that for someone else. Any comments? - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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XOTcl based HTML generation
by Kristoffer Lawson 13 Feb '01

13 Feb '01

A friend here at Fishpool made a simple HTML generation library in XOTcl which does automatic indentation and generally makes code that deals with HTML much neater. Currently it's all based around a HtmlDocument class, which can be used to build a whole document or parts of a document (which can then be added to other HtmlDocuments). Naturally this can be extended with for things like tables, forms and whatever, although it already includes methods for some of those. I'm sure it might make the xodoc source code a lot cleaner (and I've been tempted to stick it in there when editing it) :-) If anyone is interested, do check it out: http://dev.fishpool.fi/oss/htmllib/ - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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some xodoc fixes
by Kristoffer Lawson 13 Feb '01

13 Feb '01

I'm not sure if I should send this to Uwe and Gustaf directly or this list, so if this is wasting bandwidth then tell me and I'll try to remember to send further suggested updates directly to them. Anyhow here are some changes I made: - It bugged when a file did not end with a newline (this was actually the cause of my earlier problem). - Slightly changed the errorCode documentation section. - Fixed some other HTML bugs (quite possibly caused by my previoues ventures into playing with xodoc ;-). - Removed a lot of space that was being fed out. This was problematic when I use the <pre> tags. The downside is that the code looks rather messy, but I might just be posting a kind of solution for that soon. Anyhow, my version of the xodoc file is attached here. - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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Abstract method f args called
by Catherine Letondal 12 Feb '01

12 Feb '01

Hi, Say I have the following class hierarchy: Class C0 C0 instproc f args { puts "(C0) I am [self] class [[self] info class] in method [self proc]" } Class C1 -superclass C0 C1 abstract instproc f args Class C2 -superclass C1 C2 instproc f args { puts "(C1) I am [self] class [[self] info class] in method [self proc]" next } So, the method f is: - defined at the top of the hierarchy - abstract in the middle of the hierarchy. - redefined at the bottom When I run: C2 c2 c2 f I get: (C1) I am ::c2 class ::C2 in method f Abstract method f args called and I cannot reach the top method? Is this on purpose? -- Catherine Letondal -- Pasteur Institute Computing Center

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document operation
by Kristoffer Lawson 09 Feb '01

09 Feb '01

Am I right in assuming that currently xodoc doesn't generate documentation for classes within namespaces, if these classes aren't exported from the namespace? Normally this would be correct (I think I suggested it myself), but when another exported class is a sub-class of the non-exported one the user of the exported class still needs to see the non-exported one (to check method definitions etc.). So for this situation documentation should still be generated. Would this work in xodoc? Maybe the non-exported one would be marked somehow so as the reader knows that the class is not meant for direct use. - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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Xotcl February 2001