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    for( $thingy{foo()}{bar()} ) {
        s/^\s+//;
        s/\s+(#.*)?$//;
        tr/A-Z/a-z/;
    }

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    $thingy{foo()}{bar()} =~ s/^\s+//;
    $thingy{foo()}{bar()} =~ s/\s+(#.*)?$//;
    $thingy{foo()}{bar()} =~ tr/A-Z/a-z/;