"...preserve values..."

Mmh, i'm not sure if this is helpful but a while ago i played around with this:

package Foo {

    use strict;
    use warnings;

    sub new {
        my ( $class, $foo ) = @_;
        bless \$foo, $class;
        \$foo;
    }

    sub foo {
        ${ (shift) };
    }

    1;
}

package Bar {

    use strict;
    use warnings;
    use parent qw(Foo);

    my $modify = sub { uc shift };

    # my $modify = sub { ... };

    sub bar {
        # my ( $self, $foo ) = @_;
        $modify->( shift->SUPER::foo() );
    }

    1;
}

#!/usr/bin/env perl

use strict;
use warnings;
use feature qw(say);
use Bar;

my $object = Bar->new(q(lorem ipsum kizuaheli));

say for ( $object->foo(), $object->bar() );

__END__

[download]

OK, it's a scalar but it could hash as well. The original is always available.

I hope i didn't miss the point.

Regards, Karl

«The Crux of the Biscuit is the Apostrophe»

perl -MCrypt::CBC -E 'say Crypt::CBC->new(-key=>'kgb',-cipher=>"Blowfish")->decrypt_hex($ENV{KARL});'Help

In reply to Re: How to preserve values outside a sub by karlgoethebier
in thread How to preserve values outside a sub by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.