Yesterday, in response to a system design problem, I brought up the
possibility of using "NaN", or one of the other special IEEE values, to flag
a field into which no value had been entered. I was met with stares of
incomprehension, even from an experienced project manager.
This, among other things, makes me suspect this has very little relevance
to most actual work so I'm happy to accept Roger's pronouncement on the
subject and move on.
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