Hi Attilio, if i would be Mr Spock, i would say "fascinating".

The example can be simplified to:

set pippo 1 Object o puts [o exists pippo] Object o::p puts [o exists pippo]

and was like this already at least in 0.9 (in 2001), most likely as well in all versions supporting "exists".

For the time being, you can use:

Object instproc exists var { string compare [my info vars $var] "" } puts [o exists pippo] o set pippo 1 puts [o exists pippo]

It should be fixed properly in the forthcoming release.

best regards -gustaf

On Wednesday 06 October 2004 17:38, Attilio Dona` wrote:

Hy Gustaf and Uwe,

We have the following bug:

package require XOTcl namespace import xotcl::*

xotcl::Class::Parameter create Param -parameter { {value ""} }

Class create MA -superclass Class

MA parameter {{v -Class {Param -value ciao} -default 1}}

MA create A

puts "A exists pippo: [A exists pippo]"

set pippo 10

puts "A exists pippo: [A exists pippo]"

--> A exists pippo: 0 --> A exists pippo: 1

This is true if you have at least one parameter defined for a Metaclass and for every global variable defined!

ciao Attilio

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