1Class::Virtually::AbstrUascetr(3C)ontributed Perl DocumeCnltaastsi:o:nVirtually::Abstract(3)
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NAME

6       Class::Virtually::Abstract - Compile-time enforcement of Class::Virtual
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SYNOPSIS

9         package My::Virtual::Idaho;
10         use base qw(Class::Virtually::Abstract);
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12         __PACKAGE__->virtual_methods(qw(new foo bar this that));
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15         package My::Private::Idaho;
16         use base qw(My::Virtual::Idaho);
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18         sub new { ... }
19         sub foo { ... }
20         sub bar { ... }
21         sub this { ... }
22         # oops, forgot to implement that()!!  Whatever will happen?!
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25         # Meanwhile, in another piece of code!
26         # KA-BLAM!  My::Private::Idaho fails to compile because it didn't
27         # fully implement My::Virtual::Idaho.
28         use My::Private::Idaho;
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DESCRIPTION

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

36       Because this relies on import() it is important that your classes are
37       used instead of required.  This is a problem, and I'm trying to figure
38       a way around it.
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40       Also, if a subclass defines its own import() routine (I've done it)
41       Class::Virtually::Abstract's compile-time checking is defeated.
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43       Got to think of a better way to do this besides import().
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AUTHOR

46       Original idea and code from Ben Tilly's AbstractClass
47       http://www.perlmonks.org/index.pl?node_id=44300&lastnode_id=45341
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49       Embraced and Extended by Michael G Schwern <schwern@pobox.com>
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SEE ALSO

52       Class::Virtual
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56perl v5.28.0                      2016-08-06     Class::Virtually::Abstract(3)
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