design patterns

[James McCartney]

Have there been any papers written on implementing design patterns in 
delegation/object based languages? I'm interested in how delegation or 
object based inheritance can simplify design. For example these 
patterns from the Gamma, et al book seem to become non-issues in such a 
language :
Prototype - built in to object based languages.
Singleton - built in to object based languages.
Chain of Responsibility - can be done easily by delegating to next 
object in chain.
State - can be done easily with an assignable parent slot.
Strategy - can be done easily with an assignable parent slot.
Decorator - can be done easily with an assignable parent slot.
Proxy - proxy can delegate to the other object.
But I am also and perhaps more interested in design idioms that 
naturally arise out of differential programming, beyond the few that 
are mentioned in the papers on the Self site.

--- james mccartney