What are your exp. on wiring components in an application?

[Alexandru Ermicioi via Digitalmars-d]

Hi all.

So, I'm conducting a little survey about how the people from 
community are instantiating and wiring up components in 
application (written in D). I'd like to ask you following 
questions:

- How do you construct and wire your components (structs, 
objects, unions, etc.) in application?
- What, patterns and techniques are you using for doing this 
stuff?
- What are common problems you are encountering while writing 
instantiation and wiring code?

Thank you, for info,
Alexandru.