Xotcl January 2001

xotcl@alice.wu.ac.at

8 participants
16 discussions

Diagram wrong in tutorial
by Kristoffer Lawson 20 Jan '01

20 Jan '01

In the tutorial you have a diagram which presents how multiple inheritance works in XOTcl. The one with Room and Kitchen etc. As far as I can tell, the diagram has Room and 4WallsRoom the wrong way round. Ie. it shows Room's being next after Kitchen in the next chain, when presumably it should be 4WallsRoom. - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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destroy logic
by Kristoffer Lawson 18 Jan '01

18 Jan '01

Is operation of the destroy method documented in more detail somewhere? What I'm concerned about is how destroy works when method calls to an object are still active? Obviously if a method itself calls destroy, the object will appear to exist until the method returns. But can this method still call other methods? The difficult question, I suppose, is what happens if say a fileevent is activated which destroys an object that still has a method running? We are coming up with some strange errors in our application for just this kind of situation and I'm wondering if in fact the object if destroys when this fileevent is run (which would differ from the situation that a method itself calls destroy -- which still allows the method itself to run normally). The problem is that exactly replicating this isn't easy. It pops up in some situations. We get errors like "[self] called after destroy" apparently in the middle of a method that is still running, the destroy probably coming from an external influence. - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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alloc not an instproc
by Kristoffer Lawson 13 Jan '01

13 Jan '01

According to the XOTcl language reference the alloc method is an instproc of Class, yet: % Class Foo Foo % Foo alloc bar alloc % Ie. the instance of Class called Foo does not recognise the alloc method, and creates an object named alloc instead. If alloc is actually a proc of Class, is there any way to avoid the normal create procedure in the code above? - ---------- = = ---------//--+ | / Kristoffer Lawson | www.fishpool.fi|.com +-> | setok(a)fishpool.com | - - --+------ |-- Fishpool Creations Ltd - / | +-------- = - - - = --------- /~setok/

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using @, metadata, ... without xodoc
by Catherine Letondal 09 Jan '01

09 Jan '01

Hi, I have a question about documentation mechanisms in XOtcl. I would like to use introspection for documenting my application, but not for generating HTML files. As far as I have understood: - metadata is deprecated (http://media.wu-wien.ac.at/doc/tutorial.html#meta-data) - @ object is a kind of /dev/null which has to be redefined somehow - xodoc does this but for HTML documentation So my question is: how do I use or not use @ for generating some kind of metadata, i.e data which can be found (and changed by the user if needed) during the application? Why is metadata deprecated? Thanks in advance! -- Catherine Letondal -- Pasteur Institute Computing Center

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Debian packages of xotcl 0.83
by Teemu Hukkanen 05 Jan '01

05 Jan '01

I've made debian packages of xotcl 0.83 available under the following apt sources.list lines: deb http://bugger.fishpool.fi/debian tcl / deb-src http://bugger.fishpool.fi/debian tcl / Known issues include: - Lack of manpages for the binaries - Tclexpat. There is a separate package of tclexpat in debian. Does xotcl need another copy? - Gdbm modules. Gdbm 1.8 is not packaged in debian, 1.7 is, but xotcl uses gdbm 1.8 specific things Of these, the first one is important, the other two are not. When I get a manpage and some successful test reports, I'll upload them to debian proper.

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Xotcl on Windows?
by David LeBlanc 04 Jan '01

04 Jan '01

Hi; I am so far unable to run any of the sample programs or get gdbm or qgdbm or whatever to run. There seems to be many steps in installing xotcl that are not described in the installwin readme. I have installed the software, fixed a bug in the makefile.vc that causes auto_path to be wrong in the built make file (INSTALLDIR is defined, but INSTDIR is used in the lib path macro). Then, I ran installwin.tcl. Then, even though not in the instructions, I ran make.xotcl in the new /tcl/lib/xotcl dir. Then, I ran qgdbm0.3/install.tcl - something else not in the instructions, but it looked right. Now, whenever I try to run almost any example program (in awo etc.) I get errors. In the case of awo/webdocument.xotcl it says it can't find webagent.xotcl. This file is in the mos dir. Trying to run any of the store files gets a very curious problem: couldn't load library "K:\tcl\lib\tcl8.3\gdbm0.3\libtclgdbm.so": this library or a dependent lib rary could not be found in library path while executing "load K:/tcl/lib/tcl8.3/gdbm0.3/libtclgdbm.so" ("package ifneeded" script) invoked from within "package require -exact gdbm 0.3" (file "qgdbm.tcl" line 28) Firstly, this is windows and the shared lib extension is "dll", not "so". (the .so error is in tcl/lib/xotcl/qgdbm0.3/pkgIndex.tcl file - hard coded shared lib extension. (Curiously, the pkgIndex.tcl in the sources doesn't have this problem - in fact it looks completely different.)) Secondly whatever extension you use, there is no libtclgdbm.dll or .so file anywhere! I have a tclgdbm.dll, a libgdbm.dll and a gdbm.dll, but no libtclgdbm.dll. Which is which and where should they go? Another problem is with trying to run counter.xotcl in the /tcl/src/xotcl/apps dir - again, I get a package not found error: in this case, htmlplace.xotcl. It's almost like Xotclsh or XoWish don't do a pkgIndex search in any of the lib/xotcl dirs or subdirs. If anyone can tell me how to get all this running on windows I would be VERY greatful. Thanks, Dave LeBlanc

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Xotcl January 2001