you can also use last unless $line; to quit the loop, but this breaks if 0 is passed. If 0 is valid you can last unless defined $line;
The last unless defined $line; statement will not work either, because even if $line is empty, it will still be defined.

Your original solution, i.e. last if $line=~/^$/; (or length $line ...), is definitely better.

In reply to Re^2: Empty STDIN does not exit while loop by Laurent_R
in thread Empty STDIN does not exit while loop by Anonymous Monk

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