On Sunday, December 26, 2004, at 8:02:47 AM, Doug Swartz wrote:
> But if the strike or spare
>> aren't identified before the frame is created, it's too late to
>> choose the right subclass.
> Well.... Since you're using Smalltalk this time, that is not
> quite a true statement. It's completely possible to start with
> an open frame, then have it become a spare, or strike frame,
> when it discovers it needs to. I don't think I would have ever
> come up with this design approach without your statement
> above, and it's a design pattern I discourage, but it might be
> really slick in this case. It also shows a capability built
> into Smalltalk that just isn't readily available in other
> languages.
You're talking about become:? I was taught that to use that you had
to get written permission from Alan Kay. :)
Ron Jeffries
www.XProgramming.com
What is your dream? And knowing this, what have you
done to work towards realizing it today? -- Les Brown
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