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[Reply #15 on:]

Almost never is my recommendation.

I have to agree.

For the situations where flush() dumps random amounts of unread data, I can't think of a single case where NOT reading the data is appropriate.

Other things I program has a ClearBuffer() function which comes in handi if I only need the first 4 bytes out of 100 or something. I can stop reading and clear the rest. But other than that, not too often do I not need all the information.