Xotcl

xotcl@alice.wu.ac.at

2 participants
653 discussions

XOTclIDE und XOTcl 2.0
by Gustaf Neumann 03 Sep '12

03 Sep '12

Dear all, when one uses XOTclIDE with XOTcl 2.0, please note that the meta-data info provided via "@" must not be prefixed with "::". - The easiest way to migrate to XOTcl 2.* and XOTclIDE is to use XOTcl 1.6.7 + XOTclIDE 0.85 and save the files at least once (this provides the correct prefixes). These saved files are usable for XOTcl 1.6.* and XOTcl 2.* - XOTcl 2.0 requires XOTclIDE 0.85 - If one wants to edit files produced with XOTclIDE 0.84 (or older) with XOTcl 2.0 (and XOTclIDE 0.85), please use the following one-liner to fix the source files: cd your-source-directory-with-xotcl-files perl -pi -e ‘s/^@ ::/@ /g’ `fgrep -rl ‘@ ::’ .` All the best -gustaf neumann

1 0

Named objects
by Jonathan Kelly 10 Aug '12

10 Aug '12

Hi, I'm trying to get my head into the "named object" space. I was looking at the container example for a way in and now I'm stuck (again). nx::Class create SimpleContainer { :property {memberClass ::MyItem} :property {prefix member} # Require the method "autoname" for generating nice names :require method autoname # The method new is responsible for creating a child of the current # container. :public method new {args} { set item [${:memberClass} create [:]::[:autoname ${:prefix}] {*}$args] } } What does the ":require method autoname" do? I think I understand what [:autoname ${:prefix}] is/does but what on earth is "[:]::[:autoname ${:prefix}]" ? Jon

2 1

Reference manual for NX
by Jonathan Kelly 08 Aug '12

08 Aug '12

Is there one? One planned? Jon

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3rd Call For Papers, 19th Annual Tcl/Tk Conference 2012
by Andreas Kupries 07 Aug '12

07 Aug '12

[[ Get your papers, WIPs and posters in. (We have an exhibition hall with 25 gesture-controlled screens to show the latter two on). The deadline for abstracts and proposals is three weeks away. ]] [[ Notes: Colin Walker of F5 is confirmed as our Keynote speaker. http://www.f5.com ]] 19th Annual Tcl/Tk Conference (Tcl'2012) http://www.tcl.tk/community/tcl2012/ November 12 - 16, 2012 Sessions: National Museum of Health and Medicine Chicago 175 W. Washington Chicago, IL 60602 Rooms: Holiday Inn Chicago Mart Plaza 350 West Mart Center Drive Chicago, Illinois, USA Map: https://maps.google.com/maps/ms?msid=204739899073144451536.0004c144222a9036… Important Dates: Abstracts and proposals due August 27, 2012 Notification to authors September 10, 2012 WIP and BOF reservations open August 6, 2012 Author materials due October 29, 2012 Tutorials Start November 12, 2012 Conference starts November 14, 2012 Email Contact: tclconference(a)googlegroups.com Submission of Summaries Tcl/Tk 2012 will be held in Chicago, Illinois, USA from November 12 - 16, 2012. The program committee is asking for papers and presentation proposals from anyone using or developing with Tcl/Tk (and extensions). Past conferences have seen submissions covering a wide variety of topics including: * Scientific and engineering applications * Industrial controls * Distributed applications and Network Managment * Object oriented extensions to Tcl/Tk * New widgets for Tk * Simulation and application steering with Tcl/Tk * Tcl/Tk-centric operating environments * Tcl/Tk on small and embedded devices * Medical applications and visualization * Use of different programming paradigms in Tcl/Tk and proposals for new directions. * New areas of exploration for the Tcl/Tk language Submissions should consist of an abstract of about 100 words and a summary of not more than two pages, and should be sent as plain text to <tclconference AT googlegroups DOT com> no later than August 27, 2012. Authors of accepted abstracts will have until October 29, 2012 to submit their final paper for the inclusion in the conference proceedings. The proceedings will be made available on digital media, so extra materials such as presentation slides, code examples, code for extensions etc. are encouraged. Printed proceedings will be produced as an on-demand book at lulu.com The authors will have 25 minutes to present their paper at the conference. The program committee will review and evaluate papers according to the following criteria: * Quantity and quality of novel content * Relevance and interest to the Tcl/Tk community * Suitability of content for presentation at the conference Proposals may report on commercial or non-commercial systems, but those with only blatant marketing content will not be accepted. Application and experience papers need to strike a balance between background on the application domain and the relevance of Tcl/Tk to the application. Application and experience papers should clearly explain how the application or experience illustrates a novel use of Tcl/Tk, and what lessons the Tcl/Tk community can derive from the application or experience to apply to their own development efforts. Papers accompanied by non-disclosure agreements will be returned to the author(s) unread. All submissions are held in the highest confidentiality prior to publication in the Proceedings, both as a matter of policy and in accord with the U. S. Copyright Act of 1976. The primary author for each accepted paper will receive registration to the Technical Sessions portion of the conference at a reduced rate. Other Forms of Participation The program committee also welcomes proposals for panel discussions of up to 90 minutes. Proposals should include a list of confirmed panelists, a title and format, and a panel description with position statements from each panelist. Panels should have no more than four speakers, including the panel moderator, and should allow time for substantial interaction with attendees. Panels are not presentations of related research papers. Slots for Works-in-Progress (WIP) presentations and Birds-of-a-Feather sessions (BOFs) are available on a first-come, first-served basis starting in August 6, 2012. Specific instructions for reserving WIP and BOF time slots will be provided in the registration information available in June 2012. Some WIP and BOF time slots will be held open for on-site reservation. All attendees with an interesting work in progress should consider reserving a WIP slot. Registration Information More information on the conference is available the conference Web site (http://www.tcl.tk/community/tcl2012/) and will be published on various Tcl/Tk-related information channels. To keep in touch with news regarding the conference and Tcl events in general, subscribe to the tcl-announce list. See: http://code.activestate.com/lists/tcl-announce to subscribe to the tcl-announce mailing list. Conference Committee Clif Flynt Noumena Corp General Chair, Website Admin Andreas Kupries ActiveState Software Inc. Program Chair Cyndy Lilagan Nat. Museum of Health & Medicine, Chicago Site/Facilities Chair Arjen Markus Deltares Brian Griffin Mentor Graphics Donal Fellows University of Manchester Gerald Lester KnG Consulting, LLC Jeffrey Hobbs ActiveState Software Inc. Kevin Kenny GE Global Research Center Larry Virden Mike Doyle National Museum of Health & Medicine, Chicago Ron Fox NSCL/FRIB Michigan State University Steve Landers Digital Smarties Contact Information tclconference(a)googlegroups.com Tcl'2012 would like to thank those who are sponsoring the conference: ActiveState Software Inc. Buonacorsi Foundation Mentor Graphics Noumena Corp. SR Technology Tcl Community Association

1 0

NX on windows
by Jonathan Kelly 31 Jul '12

31 Jul '12

Hi, I'm trying to get nx working under windows. I was using Activestate 8.5 on an XP box ... and following the suggestion on the website I installed MSVisualStudio 10.0 express ... but I couldn't see how to get that to work ... there isn't a Makefile ... I had downloaded nsf2.0b3 So I thought I'd try cygwin (which I already use for other purposes). I installed the compile tools, and ran configure, but it broke because I apparently don't have a /usr/local/include/tcl8.5/tools/genStub.tcl ... I took a gamble and downloaded a version I found on the web somewhere, and then configure ran but with some warning messages. Make then breaks with this ./generic/nsfError.c:116: error: conflicting types for 'NsfPrintError' ./generic/nsfDecls.h:73: error: previous declaration of 'NsfPrintError' was here ./generic/nsfError.c:116: error: conflicting types for 'NsfPrintError' ./generic/nsfDecls.h:73: error: previous declaration of 'NsfPrintError' was here Makefile:575: recipe for target `nsfError.o' failed I'm happy to be the guinea pig for getting the "use NX on windows" instructions to be useable. Or should I just use XOTcl ... ? Thanks Jon.

5 13

reason for error
by Victor Mayevski 25 Jul '12

25 Jul '12

Hello Gustaff, What is the reason for following error/behavior: ClassX create c1; #ClassX has several subclasses c1 delete method m1 Error: ::c1: cannot delete object specific method m1 I get a similar error for "c1 delete property p1" Why am I not able to delete object specific methods/properties? Thanks

2 1

Attributes bug?
by Kurt Stoll 25 Jun '12

25 Jun '12

This looks wrong to me, but I could be wrong - maybe there are prohibitions somewhere that would tell me not to do this. If I define an Attribute "list", and then use the Tcl list command within the assign (and, presumably, other procs of the attribute as well), the attribute's unknown handler is called reflecting an odd invocation. I would suspect that other "overloading" (this is not really overloading, but looks similar so I have used that term; I apologize it that confuses you) of Tcl commands as Attributes would result in similar problems. First, here is a simple Test class without overloading the list command to demonstrate the expected behavior. Note that I redefine unknown so that I can verify the order of the invocation: (Warning - I submitted a question with embedded test code some years ago and this caused problems for people when they attempted to copy-and-paste the code. I don't recall exactly what caused the issue, but I am still using the same email client, so this may have similar issues.) Class create Test1 -slots { Attribute create alist -proc assign { obj var val } { puts "list <$obj> <$var> <$val>" $obj set $var [list $obj $var $val] } -proc unknown { val obj var args } { puts "unknown: $obj $var $val $args" } } > ## Create a test object t1 > Test1 create t1 ::t1 > ## Call alist setter > t1 alist 3 list <::t1> <alist> <3> ::t1 alist 3 > ## Check to see that alist variable set properly > t1 set alist ::t1 alist 3 > ## Force a call to unknown; note that the printed output matches the invocation order > t1 alist this should call unknown unknown: ::t1 alist this should call unknown Now, I create a simple variant. All I have changed is the name of the Attribute from "alist" to "list". But, in this case, when attempting to call the setter, unknown is called (I have done other experiments that showed that it is called when "list $obj $var $val" is called). Also, note that the invocation of unknown is a bit strange; it appears that unknown is directly invoked on the original call (in this case, "t2 list 3"), instead of having the arguments swapped as demonstrated above: Class create Test2 -slots { Attribute create list -proc assign { obj var val } { puts "list <$obj> <$var> <$val>" $obj set $var [list $obj $var $val] } -proc unknown { val obj var args } { puts "unknown: $obj $var $val $args" } } > ## Create a test object t2 > Test2 create t2 ::t2 > ## Call list setter. Unknown handler is called. > t2 list 3 list <::t2> <list> <3> unknown: list 3 ::t2 > ## See what ended up in the list variable. > t2 set list > ## Blank above Am I wrong to expect Test2 (and t2) to behave just as Test1 / t1 behaved? It's not a serious issue for me; I'll just avoid overloading Tcl commands in this context. But, it was unexpected enough for me that I thought it was warranted for me to ask the experts. -Kurt Stoll

2 2

Workaround for "value of parameter could be non-positional argument"
by Arthur Schreiber 21 Jun '12

21 Jun '12

Hello Gustaf, what is the recommended way to work around the warning that is put out by code like this: nx::Class create Test { :property value:required } set value "-h" Test new -value $value # => Warning: value '-h' of parameter '-expected' could be a non-positional argument during: # ::nsf::__#0l configure -expected -h Kind regards, Arthur

2 1

Loading XOTcl crashes
by Kurt Stoll 13 Jun '12

13 Jun '12

(I realize that this is probably not an XOTcl issue, but a ActiveState Komodo issue; however, I have not been able to find an answer through ActiveState, so I may have better luck here.) Running on a Mac, using OSX V10.7.4. I cannot get XOTcl to load properly with ActiveState Komodo V7. I do not have any problem with V6 of that tool. Also, loading XOTcl into tclsh when invoked from the Terminal works. All three environments (Komodo V7, V6, and Terminal / tclsh) are using the same version of Tcl (8.5) and the same version of XOTcl (1.6.6 - I know, down rev by one release). All three versions point to the same library file: /System/Library/Tcl/8.5/xotcl1.6.6/libxotcl1.6.6.dylib. Yet, when I attempt to load XOTcl (using package require XOTcl) from Komodo V7, it gets stuck in an infinite loop: Error in predefined code too many nested evaluations (infinite loop?) while executing "DbgNub_infoCmd exists DbgNub(returnState)" (procedure "catch" line 11) invoked from within "catch {set savedErrorInfo $::errorInfo}" (procedure "::unknown" line 18) invoked from within ... "proc ::xotcl::myproc {args} {linsert $args 0 [::xotcl::self]}" too many nested evaluations (infinite loop?) I don't believe I have changed any relevant settings. Any clues? Thanks, Kurt Stoll

3 4

XOTcl 2 problem
by Kulcsár Ferenc 10 Jun '12

10 Jun '12

Dear list, I'm playing with the example codes placed here: http://next-scripting.org/xowiki/getstart but the XOTcl example isn't working as expected. I have the following error: ./tclsh8.5 proba1.tcl ::g: unable to dispatch method 'parameter' during '::g.parameter' ::g ::xotcl::Object->residualargs ::Greeter ::xotcl::Class->create invoked from within "Greeter create g -parameter Anna" (file "proba1.tcl" line 13) the code in the proba1.tcl file is: package require XOTcl xotcl::Class create Greeter -parameter name Greeter instproc say_hello {} { my instvar name puts "Welcome $name!" } Greeter instproc say_bye {} { my instvar name puts "Goodbye $name!" } Greeter create g -parameter Anna g say_hello The nx version is working well. Any hints are appreciated. TIA, feri P.s.: The nsf2.0b3 and git versions display the same error. -- Kulcsár Ferenc <crusader(a)netbsd.hu>

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