Hi Squeakers,
I have been reading Adele Goldberg's classic text, "Smalltalk-80 The
Interactive Programming Environment," and came across this in Chapter 7,
"How to make Pictures."
Adele states, "Create a Form Editor by evaluating an expression of the form,
(Form new extent: 300 @ 400) edit"
It didn't work for me in Squeak 3.8 (on my Macintosh).
Further down, Adele says, "The message edit can be sent to any instance
of Form." But when I checked with my browser I found that Form has a
class method extent: but not an instance method extent:.
So I tried (Form extent: 300 @ 400) edit and the Form Editor appeared as
desired. Is this because Smalltalk and Squeak are different somehow, or
is there a mistake in the text, or?
If the text is correct, then I still don't fully appreciate the
difference between class and instance methods.
Bruce Prior
(still looking for "ah - ha!" and I think it's close....)
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