while (<...>)

[download]
is short for 
while (defined($_ = <...>))

[download]

local *_; prevents the clobbering of the parent's $_. my $_; would also do the trick in Perl 5.10+

In reply to Re^3: Search, Match, Compare, and Report by ikegami
in thread Search, Match, Compare, and Report by kirkbrown

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