Re: idempotent (was Re: exif --remove not idempotent, and a Debian man page bug)
rhkramer writes:
> Some examples from (simple) math include adding zero or multiplying by
> 1.
Those are respectively the additive and multiplicative identities. They
are, of course, idempotent but not good examples because they never
change the operand even on first application.
A better example of an idempotent operator is the absolute value
operator.
> An example from "real life" could be pressing the on (or off) button
> on some electronic device.
That's a good one.
--
John Hasler
john@sugarbit.com
Elmwood, WI USA
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