Here is a simple example: 
sub foo {
   my ($helper)= @_;
   $helper->(42, "Hello World");
   }

sub help1 {
   my ($value, $caption)= @_;
   print "$caption $value squared is",$value*$value,"\n";
   }

# main code
foo (&help1);

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In reply to Re: Passing an array to a subroutine by John M. Dlugosz
in thread Passing an array to a subroutine by gisrob

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