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Re^3: Class or Object composition ??

by stvn (Monsignor)
on Oct 05, 2006 at 00:05 UTC ( #576449=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Class or Object composition ??
in thread Class or Object composition ??

As a side question - Does the new Roles in perl6 cover the delegation-pattern ?

Yes, although not as extensively as Class::Delegation. You can see examples of it here. In addition Moose also supports Perl 6-ish style delgation like so:

package Tail; use Moose; sub wag { ... } package Dog; use Moose; has tail => ( is => 'ro', isa => 'Tail', default => sub { Tail->new }, handles => { 'wag_tail' => 'wag' } ); ## later in your code ... my $fido = Dog->new; $fido->wag_tail; # is equivalent too $fido->tail->wag;
Its seems to me that the main difference between Perl 6/Moose style delegation and Class::Delegation is the options for combining methods that Class::Delegation offers.

-stvn


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