In non-slurp mode, this works via assignment using the diamond operator (<>) - or just the same if you open an file handle, $FH: 
# test.pl
while (my $line = <>) {
  chomp $line;
  print qq{$line\n}; # yes I know, pointless use of chomp
}

[download]
> perl test.pl < test.pl
# test.pl
while (my $line = <>) {
  chomp $line;
  print qq{$line\n}; # yes I know, pointless use of chomp
}

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Similarly, you could do something destructive with pop or shift, like, 
while (my $item = pop @my_array) {
  # do stuff with $item
}

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In reply to Re^2: Splitting in while loop by perlfan
in thread Splitting in while loop by tel2

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