And when 5.10 arrives 
#!/usr/local/bin/perl5.9.5
#
use feature ":5.10";
use strict;
use warnings;


print "content-type: text/html\n\n";

my @userArray = qw(batman robin joker);
my @userArray2; #this is a null array

my @mainArray = (@userArray, @userArray2);

my @set;

# A loop, just for this example...
for(@mainArray)
{
    when ( ! defined $_ ) { next }
    when ( /^$/ ) { next }
    default { push @set, $_ }
}

say "@set";

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I of course do not mean this as a serious (Use this in production) reply to the op.
Ted
--
"That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved."
  --Ralph Waldo Emerson

In reply to Re: any built in function to take out null arrays elements? by tcf03
in thread any built in function to take out null arrays elements? by adrive

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