While working on some guts of a class library I use at work, I realized that there's all sorts of inheritance types. I was wondering what others have thought on this.
  1. Functional inheritance. We all know and love @ISA.
  2. Attribute inheritance. This isn't implented directly in Perl, but people do it easily using hash properties.
  3. Value inheritance. For example, you have a class attribute that stores a key and a coderef to be called, to indicate that an attribute has some dynamic processing. (Bad implementation, I know, but I had to work within constraints.) If you inherit the attribute, you need to inherit the values populated by the parent class(es).
Primarily, I was wondering what people thought about value inheritance. I personally don't like it - there's better ways to represent the relationships. But, have other run into this?

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In reply to Inheriting different types of things... by dragonchild

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