What is copyWith and how can I use it in Flutter and what are it’s use cases?

by

Let’s say you have an object in which you want to change some properties. One way to do is by changing each property at a time like object.prop1 = x object.prop2 = y and so on. This will go cumbersome if you have more than few properties to change. Then copyWith method comes handy. This method takes all the properties(which need to change) and their corresponding values and returns new object with your desired properties.

updateWith method is doing same thing by again calling copyWith method and at the end it is pushing returned object to stream.

More Related Contents:

  1. How to use in JSF page? Single form? Multiple forms? Nested forms?
  2. Is there a difference in how member variables are initialized in Dart?
  3. Flutter: How to correctly use an Inherited Widget?
  4. Flutter: RenderBox was not laid out
  5. What are Keys in the Stateless widgets class?
  6. How to upload images and file to a server in Flutter?
  7. How to write “Html.BeginForm” in Razor
  8. How to import platform specific dependency in Flutter/Dart? (Combine Web with Android/iOS)
  9. Flutter- wrapping text [duplicate]
  10. Flutter Countdown Timer
  11. How to change the application launcher icon on Flutter?
  12. Angular 2: Can’t bind to ‘ngModel’ since it isn’t a known property of ‘input’
  13. flutter ListView scroll to index not available
  14. Style BottomNavigationBar in Flutter
  15. How to solve the “Type Null is not a subtype of type …” error?
  16. How to clear Flutter’s Build cache?
  17. How can I layout widgets based on the size of the parent?
  18. CocoaPods not installed or not in valid state
  19. Emit the data to parent Widget in Flutter
  20. How to check if Flutter Text widget was overflowed
  21. Flutter Test MissingPluginException
  22. Flutter: How to listen to the FirebaseUser is Email verified boolean?
  23. Flutter: How to get upload / download progress for http requests
  24. How to run code after some delay in Flutter?
  25. Flutter setState() or markNeedsBuild() called when widget tree was locked
  26. How to listen for document changes in Cloud Firestore using Flutter?
  27. How can I add shadow to the widget in flutter?
  28. Flutter – How to set status bar color when AppBar not present
  29. convert a String of “uint8list” to a Unit8List
  30. Combine streams from Firestore in flutter

Leave a Comment