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From: Kevin Van Workum <vanw_at_sabalcore.com>
Date: Mon, 16 Aug 2010 09:36:03 -0400

How do I rename a Class instproc? For example:

Class T -parameter { {msg "Hello world!"} }
T instproc hi {} {
    puts [my msg]
}
T instparametercmd msg

T t
t hi

t msg "Good Bye!"
t rename hi bye
t bye


Also, what's the difference between using "instparametercmd" and
"parametercmd" in the example above?

Thanks,

Kevin

-- 
Kevin Van Workum, PhD
Sabalcore Computing Inc.
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From: Matthew Dodwell <mjd_at_orcaspirit.co.uk>
Date: Fri, 3 Feb 2006 11:21:11 -0000

Thanks - I'll give that a go.

Matthew

-----Original Message-----
From: xotcl-bounces_at_alice.wu-wien.ac.at
[mailto:xotcl-bounces_at_alice.wu-wien.ac.at]On Behalf Of Neophytos
Demetriou
Sent: 02 February 2006 19:48
To: xotcl_at_alice.wu-wien.ac.at
Subject: Re: [Xotcl] Ordering of Children


Matthew Dodwell wrote:
> MemoryLineController instproc AddNode {name} {
> eval GUINode [self]::[my autoname gNode%02d] -DisplayName {$name}
> }

* Replace the body of addNode as follows:

        my lappend __children [eval GUINode ...etc... ]

    and [my info children *gNode*] in CreateTreeview as follows:

        [my set __children]

OR

* Use an OrderedComposite class that does it for you. You will either
have to mix it in or define it as one of the superclasses of
MemoryLineController, i.e.:

        Class MemoryLineController -superclass OrderedComposite


Class OrderedComposite

OrderedComposite instproc children {} {
   set children [expr {[my exists __children] ? [my set __children] : ""}]
   return $children
}
OrderedComposite instproc add obj {
   my lappend __children $obj
   $obj set __parent [self]
}


Best,
Neophytos
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From: <MichaelL_at_frogware.com>
Date: Mon, 15 Nov 2004 11:02:56 -0500

> One other thought... have you tried explicitly namespace scoping
> your object... I know that there were some namespace issues with the
> early 1.3 series.
>
> try:
> TestA ::a
> ::a x 1

Yahoo! Brilliant! "TestA ::a" did the trick. Thanks.

From: Gustaf Neumann <neumann_at_wu-wien.ac.at>
Date: Wed, 16 Mar 2011 06:29:58 +0100

Dear Victor,

i don't think, nx/xotcl should brace a scalar return values.
Look at plain Tcl:
Tcl does not brace a string with a space either:

% set x "a b"
a b

For what reason should nx/xotcl do it? There are many other
commands in nx, doing the same, such as e.g. "create"

% nx::Object create "a b"
::a b
% nx::Object create "a b::c d"
::a b::c d
% nx::Object create "a b::e"
::a b::e

... and therefore "info parent" has no reason to add braces:

% "a b::c d" info parent
::a b

In situations, where a list is returned (potentially
multiple elements) the elements have to be are proper list
elements and therefore these elements are escaped, even if
the result is a list with a single element:

% "a b" info children
{::a b::e} {::a b::c d}

This is the same in plain Tcl as well: "info commands"
returns a list of elements:

% info commands "::a *"
{::a b}
% info commands "::a b::*"
{::a b::e} {::a b::c d}

again, the command as a scalar:

% lindex [info commands "::a b::*"] 0
::a b::e
%

So, the rule is: list are properly escaped, scalars are the
plain values.

all the best
-gustaf

On 16.03.11 01:48, Victor Mayevski wrote:
> Hello Gustaf,
>
> I encountered an issue with [info parent] and where parent's name
> contains a space. While [info children] behaves correctly by returning
> a list:
> {::pa rent::child}
> [info parent] just returns the name:
> ::pa rent
> instead of:
> {::pa rent}
> This is fixable by using [list [info parent]] but I wonder if that
> should be the default behavior in NX anyway?
>
> Thanks,
>
> Victor

From: Aamer Akhter <aakhter_at_gmail.com>
Date: Sun, 27 Mar 2005 03:17:22 -0500

I just tried this with 1.3.6 and it appears to be working. Sort of
related question, how do people handle the swizzling/unswizzling of
autogenerated object names (eg ::xotcl__#0) when restoring an object?

On Sun, 27 Mar 2005 02:17:43 -0500, Aamer Akhter <aakhter_at_gmail.com> wrote:
> Hello,
>
> I seem to be missing something basic in the usage of Serializer:
>
> package require XOTcl
> namespace import ::xotcl::*
> package require xotcl::serializer
> set a [Object new]
> $a set b hello
> Serializer deepSerialize $a
>
> the last command doesn't seem to return anything. I had expected the
> creation and config code for $a. What am I missing?
>
> --
> Aamer Akhter / aakhter_at_gmail.com
>

-- 
Aamer Akhter / aakhter_at_gmail.com

From: Kulcsár Ferenc <crusader_at_netbsd.hu>
Date: Sat, 9 Jun 2012 10:00:35 +0200

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_at_netbsd.hu>

From: Kristoffer Lawson <setok_at_fishpool.com>
Date: Wed, 1 Feb 2006 15:54:10 +0200

When XOTcl exits, it seems that the [destroy] method is called on all
objects. The first question is whether this is wise .. possibly. The
problem is I would like to build a transparent layer for persistence
storage which could be applied to a wide range of applications. The
problem naturally is that the objects in the persistence storage get
destroyed when the application exits :-)

            / http://www.fishpool.com/~setok/

From: Gustaf Neumann <neumann_at_wu-wien.ac.at>
Date: Wed, 01 Mar 2006 10:48:04 +0100

Murr, Florian schrieb:
> In XOTcl (1.3.8) there seems to be no initialisation of parameters
> during dynamic class change.
>
this is intended behavior. when an object changes its class, it is not
clear
that someone want's to re-initialize variables, etc.. btw, there is a
similar situation,
when mixining-in classes with parameter definitions.
> See code below: a1 and a2 behave differently.
>
they don't behave differently on themselves, you are doing different
things there.
certainly, when you call a method setting an instvar, it is afterwards
there,
if you don't call it, its not there.

I think, you question is: how can i get the default values from parameters
set, when i change dynamically the class. The following definition
helps you with that:

=============================
Object instmixin add \
    [Class new -instproc class args {next; ::xotcl::Class::Parameter
searchDefaults [self]}]
=============================

btw, you can get rid of the string-map-INFO business by using

   ...
   package require xotcl::trace
   ...
   A instproc pp {} { my showVars }
   ...

hope this helps
-gustaf neumann

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From: Kristoffer Lawson <setok_at_scred.com>
Date: Thu, 5 Aug 2010 18:57:17 +0300

I've now also documented the issue and the solution I'm using on Tcl's Wiki, for reference:

http://wiki.tcl.tk/26791

Feel free to disagree but I wanted that security in my code :-)

-- 
Kristoffer Lawson, Co-Founder, Scred // http://www.scred.com/