API to bind against external collection #7
Description
We already have extern and synchronized to bind to foreign values.
This works well when if one wants to integrate primite values or immutable objects (which are then replaced with new instances whenever they "change").
We currently do not have a method to bind to foreign collections, i.e. some data source that
- Stays the same (reference-wise) for its entire lifetime, but
- Has internal changes that are communicated via events (e.g. "added", "removed").
It would be interesting to be able to make such a collection look like an reactive object, e.g. a ReactiveSet.