Enumerator Implementation: Use struct or class?

Question

I noticed that List defines its enumerator as a struct, while ArrayList defines its enumerator as a class. What\'s t

Answer 1

Like this others, I would choose a class. Mutable structs are nasty. (And as Jared suggests, I'd use an iterator block. Hand-coding an enumerator is fiddly to get right.)

See this thread for an example of the list enumerator being a mutable struct causing problems...