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  1. or download this
    use if $/ = "\n", 5.012 => qw( say );

--output:--
Can't locate 5.012.pm in @INC (@INC contains: /Users/7stud/perl5/perlb
+rew/perls/perl-5.16.0/lib/site_perl/5.16.0/darwin-2level /Users/7stud
+/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0 /Users/7stud/p
+erl5/perlbrew/perls/perl-5.16.0/lib/5.16.0/darwin-2level /Users/7stud
+/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0 .) at /Users/7stud/perl5
+/perlbrew/perls/perl-5.16.0/lib/5.16.0/if.pm line 13.
BEGIN failed--compilation aborted at 2.pl line 1.
  2. or download this
    our $verbose = 1;
use if $verbose, 'strict';

$v = 'hello';
  3. or download this
    
use strict;
...
hello world