Evaluating alternative Decorator implementations in Ruby

Evaluating alternative Decorator implementations in Ruby:

Recently, decorators have become a big part of my Ruby on Rails life.

We used them heavily in a recent client project, Harold Giménez wrote a great post about them, Avdi Grimm is writing about them in Objects on Rails, and Jeff Casimir has a great presentation about them.

Until recently, I still had some questions, however, such as:

Should I roll my own decorators?
If I roll my own, what are the tradeoffs of different implementations?
Do I care about the “transparent interface” requirements of the Gang of Four’s decorator definition?
Is it good or bad that the decorated object’s class is the decorator instead of the component?

[Good explanations.]
Source:

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