# The devel/p5-Class-Virtual port

## p5-Class-Virtual-0.08p0 – base class for virtual base classes

## Description

    This is a base class for implementing virtual base classes (what
    some people call an abstract class). Kinda kooky. It allows you to
    explicitly declare what methods are virtual and that must be
    implemented by subclasses. This might seem silly, since your program
    will halt and catch fire when an unimplemented virtual method is
    hit anyway, but there's some benefits.

    The error message is more informative. Instead of the usual "Can't
    locate object method" error, you'll get one explaining that a virtual
    method was left unimplemented.

    Subclass authors can explicitly check to make sure they've implemented
    all the necessary virtual methods. When used as part of a regression
    test, it will shield against the virtual method requirements changing
    out from under the subclass.

    Finally, subclass authors can get an explicit list of everything
    they're expected to implement.

    Doesn't hurt and it doesn't slow you down.

WWW: https://metacpan.org/release/Class-Virtual

Categories:
  devel perl5

## Library dependencies

## Build dependencies

- devel/p5-Carp-Assert
- devel/p5-Class-Data-Inheritable
- devel/p5-Class-ISA

## Run dependencies

- devel/p5-Carp-Assert
- devel/p5-Class-Data-Inheritable
- devel/p5-Class-ISA