Repeated Code is a Mistake

• Why?

• Because it is wasteful

• Programmers like to think of code as their product

• It's not---The product is functionality

• Code is a liability

• Twice as much code takes twice as long to read

• Twice as many chances for bugs

• Twice as long to test

• But the functionality is much less than twice in these cases

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Copyright © 2006 M. J. Dominus