DelegatingIterable<E> class

An implementation of Iterable that delegates all methods to another Iterable. For instance you can create a FruitIterable like this :

class FruitIterable extends DelegatingIterable<Fruit> {
  final Iterable<Fruit> _fruits = [];

  Iterable<Fruit> get delegate => _fruits;

  // custom methods
}
Implemented types
Implementers

Constructors

DelegatingIterable()

Properties

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

Methods

any(bool test(E element)) bool
Checks whether any element of this iterable satisfies test. [...]
override
cast<T>() Iterable<T>
Provides a view of this iterable as an iterable of R instances. [...]
override
contains(Object element) bool
Returns true if the collection contains an element equal to element. [...]
override
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
Returns 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>
Returns the lazy concatentation of this iterable and other. [...]
override
forEach(void f(E element)) → void
Applies the function f to each element of this collection 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
Returns the last element that satisfies the given predicate test. [...]
override
map<T>(T f(E e)) Iterable<T>
Returns a new lazy Iterable with elements that are created by calling f on each element of this Iterable in iteration order. [...]
override
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
singleWhere(bool test(E element), {E orElse()}) → E
Returns the single element that satisfies test. [...]
override
skip(int n) Iterable<E>
Returns an Iterable that provides all but the first count elements. [...]
override
skipWhile(bool test(E value)) Iterable<E>
Returns an Iterable that skips leading elements while test is satisfied. [...]
override
take(int n) Iterable<E>
Returns a lazy iterable of the count first elements of this iterable. [...]
override
takeWhile(bool test(E value)) Iterable<E>
Returns 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
where(bool test(E element)) Iterable<E>
Returns a new lazy Iterable with all elements that satisfy the predicate test. [...]
override
whereType<T>() Iterable<T>
Returns a new lazy Iterable with all elements that have type T. [...]
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited