#! perl
use strict;
use warnings;
use v5.14;

make_adder(20);
say  inner(10);
make_adder(25);
say  inner(10);

sub make_adder
{
    my      $addpiece = shift;
    print "\$addpiece = $addpiece\n";
    *inner = sub { return shift() + $addpiece; };
}

##</code><code>##

13:02 >perl 1102_SoPW.pl
$addpiece = 20
30
$addpiece = 25
Subroutine main::inner redefined at 1102_SoPW.pl line 15.
35

13:02 >