Challenge: More Compact?
bill-bell at bill-bell.hamilton.on.ca
Mon Jul 16 10:09:01 EDT 2001
"Tim Peters" <tim.one at home.com> wrote, in part:
> BTW, does it bother anyone that all of these solutions accept an IP
> ending with a newline?
This reminds me of a thread of a few months ago on one of the Perl
lists. Someone (it might have been me :o) wanted a regex that
matches the collection of (syntactically correct) URLs exactly.
How do we know that the junk that we write in this quite low-level
context is correct? How would one check that an IPv4 IP address,
or a URL for that matter, is correct as specified in an RFC
(This summer I'm working with one of Parnas' s/e students. Maybe
that's why my conscience is giving me such grief.)
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