[ This is a different spin on the same answer. ]
split's first argument isn't matched literally. It's treated as a regex pattern. The regex pattern can be provided as any of the following:
- a string,
- a compiled pattern
- a match operator (which passes a compiled pattern)
The following are equivalent:
my @octets = split('\\.', $ip);
my @octets = split(qr/\./, $ip);
my @octets = split(/\./, $ip);
I always use the last syntax. It avoids confusion.
You might also be interested in Socket's inet_aton (and inet_ntoa).
(Note that split ' ' is special. See split's documentation if you're interested in details.)
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