Immutable class Flutter

There are a number of advantages to using immutable data. It’s inherently thread safe, because since no code can alter its content, it’s guaranteed to be the same no matter what code is accessing it .11 Tem 2020

Immutability is used for performance reasons . If the widget needs to change, create a new instance set up accordingly. It’s quicker to check if two instances are identical than if their state is the same. This is one of the reasons const is used often.

Explore Immutable Data Structures In Dart & Flutter. In object-oriented and functional programming, an immutable object is an object whose state can’t be adjusted after it is made . This is as opposed to a mutable object, which can be adjusted after it is made.

Widgets are the central class hierarchy in the Flutter framework. A widget is an immutable description of part of a user interface . Widgets can be inflated into elements, which manage the underlying render tree. Widgets themselves have no mutable state (all their fields must be final).