I don't understand how this works?

How does this work? 

local $, = ',';
local $" = ',';

sub printSpecial() {
      $\ = "\n";
      my @a = qw( One Two Three );

      print ("\n");
      print ("Join print statement\n");
      print ("\n");
      print join( ',', @a );

      {
        # $, The output field separator for the print operator.
        local $, = ',';
        print @a;
        print "@a";
      }
      {
        print ("\n");
        local $" = ',';
        print @a;
        print "@a";

      }
      {
        # $"   "$,"     Like "$," except that it applies to list value
+s interpolated into a double-quoted string (or similar interpreted st
+ring). Default is a space.
        print ("\n");
        local $" = ',';
        print @a;
        print "@a";

      }
}

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Originally posted as a Categorized Answer.

In reply to Re: How do I print an array with commas separating each element? by hazem
in thread How do I print an array with commas separating each element? by Anonymous Monk

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