I have been wondering whether some sort of a grep facility could be
introuduced into a class derived from istream which could help in
meeting the requirements such as

Whenever cin (or another instance of istream ) is used :

Ignore all lines beginning with a '#' character
OR
Ignore all but those lines beginning with a 'DATA' string.

Can anybody help me out or provide some initial direction ?

Such a facility could be very helpful in using data files with
comments in them or very large files which contain only a small
area which contain the DATA.

Thanks

Danny

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Dhananjay Nene -> danny@gftpd-mail.citicorp.com
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