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To
cope with complexity, the human mind engages in
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abstraction-the
act of separating the essential qualities of
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an
idea or object from the details of how it works or is
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composed.
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To
manage complexity, software developers regularly use
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two
important abstraction techniques:control abstraction
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and
data abstraction
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An
example of control abstraction is a function call. Ex.
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4.6 +
sqrt(x)
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We
use data abstraction when we define a new type. We
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concentrate
initially on its logical properties and defer
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implementation
details.
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