Redefining an Assignment Slot?
R James Noble
kjx at comp.vuw.ac.nz
Thu Feb 25 02:59:57 UTC 1993
> Is there a way to redefine an assignment slot.
> i.e. Do something like point x: = ( display NeedRedraw. <- )
In my widget system I often need to do this. What I do is
o rename the original variable "foo" to "iFoo"
("i" for instance or internal)
o define "foo" and "foo:" in terms of "iFoo" and "iFoo:"
with whatever wrapping is needed.
I guess the advantage of a separation between methods and variables
(as in Smalltalk) are the two distinct name spaces - you can have both
messages and variables with the same names. On the whole, Self's
scheme is simpler, but it does seem to occasionally a little bit of
BTW - I'd be interested to hear about what you are doing with Self -
your example sounds interesting. I'm trying to write a dynamic
program visualisation system in Self - there may be a screen dump in
contrib on otis showing some recent work.
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