[Xotcl] NX objects and namespaces

[Stefan Sobernig]

Hi Maksym!

> namespace eval testNameSpace {
>> aClass create a_obj1
>> a_obj1 print
>> bClass create b_obj1 -pr a_obj1
>> }

tl;dr

You need to pass a fully-qualified object (command) name as an argument:

namespace eval testNameSpace {
   set a_obj1_fq [aClass create a_obj1]
   a_obj1 print
   bClass new -pr [namespace which a_obj1]
   bClass new -pr $a_obj1_fq
}

For this purpose, you may capture the fully-qualified object name as the 
result of the create/new call via a variable (a_obj1_fq); or, you may 
use [namespace which] to capture the namespace context.

In Tcl, and Tk, the call site is made responsible for resolving or 
capturing the namespace context; and not the callee. Think of [namespace 
code ...] and friends. In general, for the callee, there will be 
ambiguity when reconstructing the original call site, in presence of 
command traces or different [namespace path ...] settings (or, filters 
and mixins in XOTcl/ NX); or combinations thereof.

HTH, and Happy New Year to you too,

    Stefan