SelectorReacton<T, S> class

A selector reacton that watches a sub-value of another reacton.

Only triggers rebuilds when the selected sub-value actually changes, providing fine-grained reactivity for complex state objects.

final userNameReacton = selector(
  userReacton,
  (user) => user.name,
  name: 'userName',
);
Inheritance

Constructors

SelectorReacton(ReactonBase<T> source, S select(T), {String? name, ReactonOptions<S>? options})

Properties

compute → S Function(ReactonReader read)
The computation function that derives this reacton's value.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
options → ReactonOptions<S>?
Configuration options.
finalinherited
ref → ReactonRef
Unique identity of this reacton.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
select → S Function(T)
The selector function that extracts the sub-value.
final
source → ReactonBase<T>
The source reacton being selected from.
final

Methods

equals(S a, S b) → bool
Whether values are considered equal (prevents unnecessary propagation).
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited