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  1. or download this
    perl -Mstrict -le 'my $s="blah"; print "%$s%"'
    
  2. or download this
    perl -Mstrict -le 'my $s={foo=>"bar"}; print "%$s%"'
    
  3. or download this
    perl -Mstrict -le 'my %s=(foo => "bar"); print "%s"'
    %s
    ...
    perl -Mstrict -le 'my $s=[qw/foo bar/]; print "@$s@"'
    foo bar@