1. Document the behavior the program is meant to exhibit.
  2. Write tests that would work if the program behaved as documented.
  3. Write code that will pass the tests.
:-)

update: and sprinkle with liberal amounts of review by peers and refactoring at each step; if the documentation can't be understood, the interface is too complicated, so aim for clear documentation first.

In reply to Re: How to write programs? by jZed
in thread How to write programs? by artist

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