Re^5: uninitialized value $

> $_ automatically was assigned the last line

That's a special DWIM magic within the while condition only!

while (<>) { ... which is Perl shorthand for the more explicitly written version: ...
while (defined($line = <ARGV>)) {

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

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Re^6: uninitialized value $_ by soonix (Chancellor) on Mar 29, 2016 at 08:13 UTC
... but not documented under while, but in perlop under "I/O-Operators" (where the internal link anchor seems not to work)	[reply]
Re^7: uninitialized value $_ by LanX (Saint) on Mar 29, 2016 at 12:02 UTC
I've already updated an excerpt of the documentation in perlsyn, but yes perlop is indeed clearer, thanks! Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]