SetSignal<E> class

Signal for Set with convenient mutation methods.

SetSignal provides reactive set operations while maintaining immutability.

Basic Usage

final tags = SetSignal<String>({'flutter', 'dart'});

// Add item
tags.add('reactive');

// Remove item
tags.remove('flutter');

// Check existence
if (tags.contains('dart')) { ... }
Inheritance

Constructors

SetSignal(Set<E> initial, {String? debugLabel, bool equals(Set<E> a, Set<E> b)?, Set<E> guard(Set<E> current, Set<E> next)?, VoidCallback? onListen, VoidCallback? onCancel})

Properties

debugLabel → String?
Debug label for identification in DevTools.
finalinherited
equals → bool Function(Set<E> a, Set<E> b)?
Custom equality function to determine if value has changed.
finalinherited
guard → Set<E> Function(Set<E> current, Set<E> next)?
Value guard/transformer called before setting a new value.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether this atom has any listeners.
no setterinherited
initialValue → Set<E>
The initial value of the atom.
no setterinherited
isDisposed → bool
Whether this atom has been disposed.
no setterinherited
isEmpty → bool
Check if set is empty.
no setter
isNotEmpty → bool
Check if set is not empty.
no setter
length → int
Get length of set.
no setter
onCancel → VoidCallback?
Callback invoked when the last listener unsubscribes.
finalinherited
onListen → VoidCallback?
Callback invoked when the first listener subscribes.
finalinherited
previousValue → Set<E>?
The previous value of the atom (before the last change).
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream<Set<E>>
A broadcast stream of value changes.
no setterinherited
val → Set<E>
Short alias for the current value.
no setterinherited
value ↔ Set<E>
Override value getter to support dependency tracking for Computed.
getter/setter pairinherited

Methods

add(E element) → bool
Add an element.
addAll(Iterable<E> elements) → void
Add multiple elements.
addListener(VoidCallback listener) → void
Adds a listener to be called when the value changes.
inherited
clear() → void
Clear all elements.
contains(E element) → bool
Check if element exists.
dispose() → void
Disposes the atom, removing all listeners.
inherited
emit(Set<E> val) → void
Assigns a new value and notifies listeners if the value changed.
inherited
mutate(void mutator(Set<E> set)) → void
Mutate the set in-place and notify listeners.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Manually notifies all listeners.
inherited
onActive() → void
Called when the first listener is added.
inherited
onInactive() → void
Called when the last listener is removed.
inherited
remove(E element) → bool
Remove an element.
removeListener(VoidCallback listener) → void
Removes a previously added listener.
inherited
reset() → void
Resets the atom to its initial value.
inherited
select<R>(R selector(Set<E> value)) → NeuronAtom<R>
Creates a new atom that selects a part of this atom's value.
inherited
subscribe(VoidCallback listener) → VoidCallback
Adds a listener and returns a callback that cancels the subscription when called.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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