is a amazing project,could you please tell me how to delete or update element in datasource?

[est7]

I've been update item in the ui layer like this:

 collectArticleEvent.observe(viewLifecycleOwner) { event ->
            detailsAdapter.snapshot().run {
                val index = indexOfFirst { it is Article && it.id == event.id }
                if (index >= 0) {
                    (this[index] as? Article)?.collect = event.isCollected
                    index
                } else null
            }?.apply(detailsAdapter::notifyItemChanged)
        }

but clean arch tell me UDF should let data control ui elements,so i want known how to delete/update element in data layer. Of course, the list should only be updated with the deleted or modified elements,How?This is really stuck on me

[stevdza-san]

I suggest you to directly interact with the data source, and then invalidate the paging source. Haven't done it personally, but you should try it out. Also check this link as well: https://stackoverflow.com/questions/63305182/paging3-pagingdataadapter-how-to-remove-item

[est7]

@stevdza-san thanks, finally find it in google guide ,use combine :https://developer.android.google.cn/topic/architecture/ui-layer/state-production#one-shot-and