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NNTP-Posting-Date: Sun, 08 Jan 2012 11:08:17 -0600
Date: Sun, 08 Jan 2012 09:08:10 -0800
From: Patricia Shanahan <pats@acm.org>
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Subject: Re: Best Way to Pass Info Between Objects?
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On 1/8/2012 8:41 AM, Novice wrote:
> Sorry, that's probably not the best of subject lines but I'm having trouble
> coming up with a concise one....
>
> I'm trying to reason out the best way to pass information from an
> instantiating class to an instantiated class. So, let's say class Foo
> invokes class Bar to do something. Bar needs some specific information from
> Foo to do its job. What is the best way to pass this information from Foo
> to Bar?
...
> I'm not sure if there is a generally agreed-upon formula here or whether it
> is more a case of individual style and preference. I'd be very interested
> in your comments on this subject. Right now, I feel like I'm being pretty
> inconsistent in my techniques and would like to standardize them along the
> best possible lines.
>

Here is one programming process approach that often simplifies these
questions: Write the Bar unit tests in parallel with designing Bar.

If the Bar design works well for both unit testing and use by a Foo,
it will probably be a reasonably robust module that does not need to
be changed too often because of changes to other modules.

Patricia