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 j...@sugarbit.com Elmwood, WI USA
