Class::Virtually::Abstract(3pm) - phpMan

Class::Virtually::Abstract(3pm)User Contributed Perl DocumentationClass::Virtually::Abstract(3pm)

NAME
       Class::Virtually::Abstract - Compile-time enforcement of Class::Virtual

SYNOPSIS
         package My::Virtual::Idaho;
         use base qw(Class::Virtually::Abstract);

         __PACKAGE__->virtual_methods(qw(new foo bar this that));

         package My::Private::Idaho;
         use base qw(My::Virtual::Idaho);

         sub new { ... }
         sub foo { ... }
         sub bar { ... }
         sub this { ... }
         # oops, forgot to implement that()!!  Whatever will happen?!

         # Meanwhile, in another piece of code!
         # KA-BLAM!  My::Private::Idaho fails to compile because it didn't
         # fully implement My::Virtual::Idaho.
         use My::Private::Idaho;

DESCRIPTION
       This subclass of Class::Virtual provides compile-time enforcement.  That means subclasses
       of your virtual class are required to implement all virtual methods or else it will not
       compile.

BUGS and CAVEATS
       Because this relies on import() it is important that your classes are used instead of
       required.  This is a problem, and I'm trying to figure a way around it.

       Also, if a subclass defines its own import() routine (I've done it)
       Class::Virtually::Abstract's compile-time checking is defeated.

       Got to think of a better way to do this besides import().

AUTHOR
       Original idea and code from Ben Tilly's AbstractClass
       http://www.perlmonks.org/index.pl?node_id=44300&lastnode_id=45341

       Embraced and Extended by Michael G Schwern <schwern AT pobox.com>

SEE ALSO
       Class::Virtual

perl v5.26.0                                2017-08-23            Class::Virtually::Abstract(3pm)

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