On Tuesday 23 March 2004 13:20, Attilio Dona wrote:

Hi,

I am newer of XOTcl and I am evaluating the language for using it instead of Itcl in the new version of a large OSS Telecommunication sw project ranging from SDH/PDH, ip,atm and application level management.

XOTcl builded successfully on HP-UX 11 and SunSolaris 8 and was integrated easily it into a starkit.

Hi Attilio, good to hear this.

My preliminary tests reveal this bug:

# define a C class with a name Class C -parameter {{name ""}}

# add a new parameter C parameter {{oid ""}}

# now inspect the parameters C info parameter {oid ""}

Whereas it would be: {name ""} {oid ""}

This is a known deficiency. info parameter returns currently the content of the last parameter argument.

Please use for the time being the following approach to add parameters (maybe define a proc for it).

Class C -parameter {{name ""}} ... # add a new parameter C parameter [concat [C info parameter] {{oid ""}}] ... C info parameter # ... returns: {name ""} {oid ""}

-gustaf neumann

PS: I am currently not completely happy with the parameter command, and started some time ago a few approaches to redo it, but these turned out to have other deficiencies. Known problems of the current implementation:

- "info parameter" is not truely introspective but returns the last string content (although, this is in most cases fine)

- the semantics of the method "parmeter" is different to other methods where one can specify multiple values. Look e.g. on the "mixin" method: one can remove mixins by issueing the mixin command again with a shorter list of values .... o mixin A B .... o mixin A In contrary to "mixin" another call of "parameter" adds a new one.

- for the same reason, one cannot remove a parameter through the parameter interface (although one can remove the instcmd and the default by hand)

I think, a better approach will be to use subobjects of the class to handle parameter semantics, but this will be most probably slower than the current version, which works quite well in a wide range of apps....

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