Re: [Xotcl] two procs (-proc) for Attribute

From: Stefan Sobernig <stefan.sobernig_at_wu.ac.at>
Date: Mon, 20 Jul 2009 12:50:39 +0200

Mykhaylo,

> How to define several procs for one Attribute in class definition?
> Particularly, I want to define both assign and get procs at once.

i am not entirely confident that i grasbed the meanings of "serveral
procs for one Attribute" and "at once". Do you mean:

a) define 2 or more (per-object methods, i.e., procs) per slot object
"at once"?

b) define 2 (per-instance methods, i.e., instprocs) per family of slot
objects "at once"?

anyways, maybe some of the following is helpful to you:

#
# ad a)
#
Class create C -slots {
   Attribute create a1 -proc assign args {
     puts "[self]->[self proc] called"
     next
   } -proc get args {
     puts "[self]->[self proc] called"
     next
   }
}

C create c
c a1 1
c a1

#
# ad b)
#
Class MyAttribute -superclass Attribute \
     -instproc assign args {
       puts "[self]->[self proc] called"
       next
     } -instproc get args {
       puts "[self]->[self proc] called"
       next
     }

Class create D -slots {
   MyAttribute create a1
   Attribute create a2
}

D create d
d a1 1
d a1