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  1. or download this
    use strict;
    use warnings;
    ...
    First argument: a
    Can't use string ("a") as an ARRAY ref while "strict refs" in use at !
    +.pl line 8
    .
    
  2. or download this
    sub testing {
       print("[@_]\n");
    ...
    
    Test 2:
    [moooo]