FAQ 7.3 Do I always/never have to quote my strings or use semicolons and commas?

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7.3: Do I always/never have to quote my strings or use semicolons and commas?

    Normally, a bareword doesn't need to be quoted, but in most cases
    probably should be (and must be under "use strict"). But a hash key
    consisting of a simple word (that isn't the name of a defined
    subroutine) and the left-hand operand to the "=>" operator both count as
    though they were quoted:

        This                    is like this
        ------------            ---------------
        $foo              $foo
        bar => stuff            'bar' => stuff

    The final semicolon in a block is optional, as is the final comma in a
    list. Good style (see perlstyle) says to put them in except for

        if ($whoops) { exit 1 }
        @nums = (1, 2, 3);

        if ($whoops) {
            exit 1;
        @lines = (
            "There Beren came from mountains cold",
            "And lost he wandered under leaves",


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