DelegatingIterable<E> class Null safety

An Iterable that delegates all operations to a base iterable.

This class can be used to hide non-Iterable methods of an iterable object, or it can be extended to add extra functionality on top of an existing iterable object.

Available Extensions

Constructors

DelegatingIterable(Iterable<E> base): Creates a wrapper that forwards operations to base.
const

Properties

first → E: Returns the first element.
read-onlyinherited
hashCode → int: The hash code for this object.
read-onlyinherited
isEmpty → bool: Whether this collection has no elements.
read-onlyinherited
isNotEmpty → bool: Whether this collection has at least one element.
read-onlyinherited
iterator → Iterator<E>: Returns a new Iterator that allows iterating the elements of this Iterable.
read-onlyinherited
last → E: Returns the last element.
read-onlyinherited
length → int: Returns the number of elements in this.
read-onlyinherited
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
single → E: Checks that this iterable has only one element, and returns that element.
read-onlyinherited

Methods

any(bool test(E)) → bool: Checks whether any element of this iterable satisfies test.
inherited
cast<T>() → Iterable<T>: Provides a view of this iterable as an iterable of R instances.
inherited
contains(Object? element) → bool: Whether the collection contains an element equal to element.
inherited
elementAt(int index) → E: Returns the indexth element.
inherited
every(bool test(E)) → bool: Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> f(E)) → Iterable<T>: Expands each element of this Iterable into zero or more elements.
inherited
firstWhere(bool test(E), {E orElse()?}) → E: Returns the first element that satisfies the given predicate test.
inherited
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
inherited
followedBy(Iterable<E> other) → Iterable<E>: Returns the lazy concatenation of this iterable and other.
inherited
forEach(void f(E)) → void: Invokes action on each element of this iterable in iteration order.
inherited
join([String separator = '']) → String: Converts each element to a String and concatenates the strings.
inherited
lastWhere(bool test(E), {E orElse()?}) → E: Returns the last element that satisfies the given predicate test.
inherited
map<T>(T f(E)) → Iterable<T>: The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed.
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.
inherited
retype<T>() → Iterable<T>: Deprecated("Use cast instead")">@Deprecated("Use cast instead")inherited
singleWhere(bool test(E), {E orElse()?}) → E: Returns the single element that satisfies test.
inherited
skip(int n) → Iterable<E>: Returns an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(E)) → Iterable<E>: Returns an Iterable that skips leading elements while test is satisfied.
inherited
take(int n) → Iterable<E>: Returns a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(E)) → Iterable<E>: Returns a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) → List<E>: Creates a List containing the elements of this Iterable.
inherited
toSet() → Set<E>: Creates a Set containing the same elements as this iterable.
inherited
toString() → String: A string representation of this object.
inherited
where(bool test(E)) → Iterable<E>: Returns a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<T>: Returns a new lazy Iterable with all elements that have type T.
inherited

Operators

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

Static Methods

typed<E>(Iterable base) → Iterable<E>: Creates a wrapper that asserts the types of values in base.
Deprecated('Use iterable.cast<E> instead.')">@Deprecated('Use iterable.cast<E> instead.')