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  1. or download this
    my $x = expresssion if condition
    
  2. or download this
    for (1..3) {
        my $x = "foo\n" if $_  > 9999;
        print $x;
        $x = "bar\n";
    }
    
  3. or download this
    Use of uninitialized value in print at /tmp/p line 5.
    bar
    bar