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Re^3: Which way is recommended ?

by TGI (Parson)
on Nov 22, 2008 at 02:19 UTC ( #725275=note: print w/ replies, xml ) Need Help??

in reply to Re^2: Which way is recommended ?
in thread Which way is recommended ?

There is an implicit check for definedness when you do while (<FOO>) { }. See the perlop section on I/O Operators.

while (<FOO>) { # do stuff } # terminates if we get a line that evaluates to false. while (my $l = <FOO>) { # do stuff } # only terminates at end of file (or error reading file) while (defined(my $l = <FOO>)) { # do stuff } # Let's take advantage of $_ and be somewhat safe(r). { local $_; while (<FOO>) { # do stuff } }

TGI says moo

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