my $coderef = sub {shift;};
my $val=$coderef->("Hello from down under");
sub doit{
       print shift, $/;
       }

&doit($val);

##</code><code>##

my $coderef = sub {shift;};
sub doit{
       print shift, $/;
       }
&doit($coderef->("Hello from down under"));

##</code><code>##

#Closured.pm
#!/usr/local/bin/perl        -cw
use strict;
use warnings;
package Closured;

sub new{
    our $self;
    my $closure = sub {
       shift;
       if(@_){
              $self = shift;
              }
       return $self;
       };
    bless $closure;
    return $closure; #returning a codeRef instead
    }
    
sub name{
    &{$_[0]};
    }
1;

##</code><code>##

#using the Closured class...
use strict;
use warnings;

use Closured;
my $object = Closured->new("Hisham"); #try to feed a constructor directly.
print $object,$/;   #the constructor retruns a code ref.
print $object->name("BioHisham"), "\n";  #Feed via an instance method

##</code><code>##

#Output 
Closured=CODE(0x18449ac)
BioHisham



##</code><code>##