ensody / reactive_state Goto Github PK

Multiple notifications should be batched into a single reaction, so we don't execute code multiple times.

We should provide a mechanism for dealing with deeply nested mutable state. For example, you might have a list of items, each having mutable props. You want to have a widget manipulating one of these props and redraw should affect whole list item or maybe even whole list or maybe a counter widget somewhere else that counts only items matching a certain filter.

Value and DerivedValue only work well for small lists, but aren't efficient enough in other cases. We should have ListValue/MapValue/SetValue which allow observing the container for individual changes.

Based on that we can introduce map/where operations that efficiently construct e.g. a derived ListValue (like with DerivedValue).

Sometimes you have to ensure that only one event is processed at a time to prevent conflicts or access to unsafe intermediate state. Either pick an existing library that does what we want or add a new helper.