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Darren New escreveu:
> http://en.wikipedia.org/wiki/Abstract_data_type
>
> ADT is abstract data type, which is *not* "an opaque object" in the
> object-oriented programming sense.
it's opaque if you don't mess with it directly. It was the old
procedural way of doing OO-like programming in languages with not enough
encapsulation abstraction.
It reminds me of a great Larry Wall quote (Perl's creator is full of
priceless quotes):
"In Perl culture, for instance, you're expected to stay out of someone's
home because you weren't invited in, not because there are bars on the
windows."
source: http://tinyurl.com/34kjkcb
He was talking about packages/modules encapsulation though.
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