| Information
hiding |
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| • | Information
hiding is perhaps the most |
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| important
intellectual tool developed to |
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| support
software design [Parnas 1972] |
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| – | Makes
the anticipation of change a centerpiece |
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| in
decomposition into modules |
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| • | Provides
the fundamental motivation for |
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| abstract
data type (ADT) languages |
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| – | And
thus a key idea in the OO world, too |
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