IterableListenable<T extends Iterable<E>, E> class abstract

可监听 Iterable

Inheritance

• Object
• ChangeNotifier
• IterableListenable

Implemented types

• Iterable<E>
• ValueListenable<T>

Implementers

• ListListenable

Available Extensions

• EnumByName
• IterableExtensions
• NullableIterableExtensions

Constructors

IterableListenable()

Properties

first → E

The first element.

no setter, override

hashCode → int

The hash code for this object.

no setter, override

hasListeners → bool

Whether any listeners are currently registered.

no setter, inherited

isEmpty → bool

Whether this collection has no elements.

no setter, override

isNotEmpty → bool

Whether this collection has at least one element.

no setter, override

iterator → Iterator<E>

A new Iterator that allows iterating the elements of this Iterable.

no setter, override

last → E

The last element.

no setter, override

length → int

The number of elements in this.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

single → E

Checks that this iterable has only one element, and returns that element.

no setter, override

value → T

The current value of the object. When the value changes, the callbacks registered with addListener will be invoked.

no setter, inherited

Methods

addListener(VoidCallback listener) → void

Register a closure to be called when the object changes.

inherited

any(bool test(E element)) → bool

Checks whether any element of this iterable satisfies test.

override

cast<R>() → Iterable<R>

A view of this iterable as an iterable of R instances.

override

contains(Object? element) → bool

Whether the collection contains an element equal to element.

override

dispose() → void

Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).

inherited

elementAt(int index) → E

Returns the indexth element.

override

every(bool test(E element)) → bool

Checks whether every element of this iterable satisfies test.

override

expand<T>(Iterable<T> f(E element)) → Iterable<T>

Expands each element of this Iterable into zero or more elements.

override

firstWhere(bool test(E element), {E orElse()?}) → E

The first element that satisfies the given predicate test.

override

fold<T>(T initialValue, T combine(T previousValue, E element)) → T

Reduces a collection to a single value by iteratively combining each element of the collection with an existing value

override

followedBy(Iterable<E> other) → Iterable<E>

Creates the lazy concatenation of this iterable and other.

override

forEach(void f(E element)) → void

Invokes action on each element of this iterable in iteration order.

override

join([String separator = ""]) → String

Converts each element to a String and concatenates the strings.

override

lastWhere(bool test(E element), {E orElse()?}) → E

The last element that satisfies the given predicate test.

override

map<T>(T f(E e)) → Iterable<T>

The current elements of this iterable modified by toElement.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyChange() → void

notifyListeners() → void

Call all the registered listeners.

inherited

reduce(E combine(E value, E element)) → E

Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.

override

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that are notified when the object changes.

inherited

singleWhere(bool test(E element), {E orElse()?}) → E

The single element that satisfies test.

override

skip(int count) → Iterable<E>

Creates an Iterable that provides all but the first count elements.

override

skipWhile(bool test(E value)) → Iterable<E>

Creates an Iterable that skips leading elements while test is satisfied.

override

take(int count) → Iterable<E>

Creates a lazy iterable of the count first elements of this iterable.

override

takeWhile(bool test(E value)) → Iterable<E>

Creates a lazy iterable of the leading elements satisfying test.

override

toList({bool growable = true}) → List<E>

Creates a List containing the elements of this Iterable.

override

toSet() → Set<E>

Creates a Set containing the same elements as this iterable.

override

toString() → String

A string representation of this object.

override

where(bool test(E element)) → Iterable<E>

Creates a new lazy Iterable with all elements that satisfy the predicate test.

override

whereType<T>() → Iterable<T>

Creates a new lazy Iterable with all elements that have type T.

override

Operators

operator ==(Object other) → bool

The equality operator.

override