NexusSet<T> class

NexusSet — A reactive, observable set with granular change tracking.

Mutates in-place and provides precise NexusChange records describing what elements were added or removed.

Usage

final tags = NexusSet<String>({'combat', 'stealth'});

tags.add('magic');      // NexusSetAdd('magic')
tags.remove('stealth'); // NexusSetRemove('stealth')
tags.toggle('combat');  // NexusSetRemove('combat') — removes if present
tags.toggle('archery'); // NexusSetAdd('archery') — adds if absent

In a Pillar

class TagPillar extends Pillar {
  late final tags = nexusSet<String>({'dart', 'flutter'});
  late final tagCount = derived(() => tags.length);
}

Inheritance

Available extensions

FluxNodeExtensions

Constructors

NexusSet({Set<T>? initial, String? name}): Creates a reactive set with optional initial elements.

Properties

conduits → List<Conduit<Set<T>>>: The list of currently attached Conduits (read-only view).
no setterinherited
dependentCount → int: The number of active dependents.
no setterinherited
elements → Iterable<T>: Returns the elements (auto-tracked).
no setter
hashCode → int: The hash code for this object.
no setterinherited
isDisposed → bool: Whether this node has been disposed.
no setterinherited
isEmpty → bool: Whether the set is empty.
no setter
isNotEmpty → bool: Whether the set has at least one element.
no setter
lastChange → NexusChange<T>?: The most recent change record.
no setter
length → int: The number of elements.
no setter
listenerCount → int: The number of active listeners.
no setterinherited
name → String?: The debug name of this state, if provided.
no setterinherited
onChange → Stream<void>: Available on ReactiveNode, provided by the FluxNodeExtensions extension
Converts this node to a stream that emits on every change.
no setter
previousValue → Set<T>?: The previous value before the most recent change.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
value ↔ Set<T>: The current value.
getter/setter pairinherited

Methods

add(T element) → bool: Adds element to the set.
addAll(Iterable<T> elements) → void: Adds all elements to the set.
addConduit(Conduit<Set<T>> conduit) → void: Adds a Conduit to this Core's pipeline.
inherited
addListener(ReactiveListener listener) → void: Adds an imperative listener that is called when this node changes.
inherited
clear() → void: Removes all elements from the set.
clearConduits() → void: Removes all Conduits from this Core.
inherited
contains(T element) → bool: Whether the set contains element.
difference(Set<T> other) → Set<T>: Returns the difference (this - other).
dispose() → void: Disposes this node, clearing all dependents and listeners.
inherited
intersection(Set<T> other) → Set<T>: Returns the intersection with other.
listen(void callback(Set<T> value)) → void Function(): Listens for value changes with a typed callback.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyDependents() → void: Notifies all dependents and listeners that this node changed.
inherited
onDependencyChanged(ReactiveNode dependency) → void: Called when a dependency of this node has changed.
inherited
onTracked(ReactiveNode source) → void: Called when this node is registered as tracking source.
inherited
peek() → Set<T>: Returns the current value without tracking it as a dependency.
inherited
remove(T element) → bool: Removes element from the set.
removeConduit(Conduit<Set<T>> conduit) → bool: Removes a previously added Conduit.
inherited
removeListener(ReactiveListener listener) → void: Removes a previously added listener.
inherited
removeWhere(bool test(T element)) → int: Removes all elements matching test.
retainWhere(bool test(T element)) → int: Retains only elements matching test.
select<R>(R selector(Set<T> value)) → TitanComputed<R>: Creates a TitanComputed that selects a sub-value from this state.
inherited
silent(Set<T> newValue) → void: Silently sets the value without notifying dependents.
inherited
toggle(T element) → bool: Toggles element: adds if absent, removes if present.
toString() → String: A string representation of this object.
override
track() → void: Registers the current tracker (if any) as a dependent of this node.
inherited
union(Set<T> other) → Set<T>: Returns the union with other.
update(Set<T> updater(Set<T> other)) → void: Updates the value using a transformation function.
inherited

Operators

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