How can I process a multi line string one line at a time in perl with use strict in place?

Question

I\'m trying to figure out the proper PBP approved way to process a multi line string one line at a time. Many Perl coders suggest treating the multi line string as a filehandle

Answer 1

Convert the multi-line string into a list of single line strings with split:

my @resultLines = split /\n/, $result;     #   or  /\r\n/ for Windows?
foreach my $resultLine (@resultLines) {
    if ($resultLine =~ m/joe/) {
        $matchLines
            = $matchLines . "\t" 
                 . $resultLine . "\n";  # put \n or \r\n back on the end
    }
}