I've used it a fair deal. I've found I prefer languages that don't require IoC to make code testable. I agree that it's one of the sanest options when it's req

I've used it a fair deal. I've found I prefer languages that don't require IoC to make code testable. I agree that it's one of the sanest options when it's required, I just think that language design should incorporate testing ergonomics from the start.