On Feb 15, [EMAIL PROTECTED] said:
Could not find this variable in perlvar under 5.8.0 for sun solaris
can you explain it?
perlmonk:~ 101:$ perldoc perlvar
...
$. Current line number for the last filehandle accessed.
Each filehandle in Perl counts the number of lines that have
been read from it. (Depending on the value of $/, Perl's idea
of what constitutes a line may not match yours.) When a line
is read from a filehandle (via readline() or "<>"), or when
tell() or seek() is called on it, $. becomes an alias to the
line counter for that filehandle.
You can adjust the counter by assigning to $., but this will
not actually move the seek pointer. Localizing $. will not
localize the filehandle's line count. Instead, it will local-
ize perl's notion of which filehandle $. is currently aliased
to.
$. is reset when the filehandle is closed, but not when an open
filehandle is reopened without an intervening close(). For
more details, see "I/O Operators" in perlop. Because "<>"
never does an explicit close, line numbers increase across ARGV
files (but see examples in "eof" in perlfunc).
You can also use "HANDLE->input_line_number(EXPR)" to access
the line counter for a given filehandle without having to worry
about which handle you last accessed.
(Mnemonic: many programs use "." to mean the current line num-
ber.)
--
Jeff "japhy" Pinyan % How can we ever be the sold short or
RPI Acacia Brother #734 % the cheated, we who for every service
http://japhy.perlmonk.org/ % have long ago been overpaid?
http://www.perlmonks.org/ % -- Meister Eckhart
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
