ShouldUpdate

  • When the state changes, the store flatly notifies all the components.
  • By default, the framework uses identical to compare the old and new state to determine if a refresh is needed.
  • If we have a very precise request for component refresh, then we can define a ShouldUpdate ourselves.
  • Sample Code
  1. bool shouldUpdate(DetailState old, DetailState now) {
  2.     return old.message != now.message;
  3. }