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bottom-up implementation
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bottom-up implementation /n./ Hackish opposite of the
techspeak term `top-down design'. It is now received wisdom in
most programming cultures that it is best to design from higher
levels of abstraction down to lower, specifying sequences of action
in increasing detail until you get to actual code. Hackers often
find (especially in exploratory designs that cannot be closely
specified in advance) that it works best to *build* things in
the opposite order, by writing and testing a clean set of primitive
operations and then knitting them together.
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