IssueTracker

Hmm maybe. I would need that lambda to run before the updates are dispatched to the RV adapter because (conforming to this example) I'm using the title inside the RV items.

My actual example is here: https://github.com/JakeWharton/SdkSearch/blob/35ecf5c5c17edd60da3498eb38eab13786623548/frontend/android/src/main/java/com/jakewharton/sdksearch/ui/ItemAdapter.kt

I have a query term and a list of results. The view holders bold the query term inside the result. Not sure how common it is to use non-list data inside the list items like this. I could make a composite object of query+item and have a list of those, I suppose...

I think running the lambda first is very reasonable.

I'm assuming we'll still need to run those lambdas in the rare case a diff is dropped when too many lists are pushed. Would be nice to avoid any extra bind work (e.g. in the setTitle) case, but it would be surprising to have some of those lambdas never run.