[nathcd]

But vnodes have a predefined shape, whereas this library is for diffing (relatively) arbitrary objects, right? If your data isn't arbitrarily shaped, I would assume you'd get much better performance by just implementing a simple direct diff, no?

[wruza]

Yes. I should have noted for clarity that vdom diff is a special case, not a general one like that of subj. But their similarity reminded me of the experience.

[nathcd]

Ah that's my mistake, I read more into your comment than you wrote. Sorry!

It's a good point about edge cases in diffing. Dynamic value diffing in dynamically-typed languages is an interesting problem to think about.

[eyelidlessness]

And, often but probably not always, using a class instance rather than a POJO. Seems unintuitive (function call overhead), but it can signal to the JIT that the object’s type is relatively stable.