class
SetBase<E>

Base implementation of Set.

This class provides a base implementation of a Set that depends only on the abstract members: add, contains, lookup, remove, iterator, length and toSet.

Some of the methods assume that toSet creates a modifiable set. If using this base class for an unmodifiable set, where toSet should return an unmodifiable set, it's necessary to reimplement retainAll, union, intersection and difference.

Implementations of Set using this base should consider also implementing clear in constant time. The default implementation works by removing every element.

Extends

Static Methods

setToString(Set set) → String
Convert a Set to a string as {each, element, as, string}.

Properties

bool isEmpty
read-only , inherited
bool isNotEmpty
read-only , inherited
E single
read-only , inherited
E first
read-only , inherited
E last
read-only , inherited
Iterator<E> iterator
read-only , inherited
E first
read-only , inherited
E last
read-only , inherited
E single
read-only , inherited
int length
read-only , inherited

Constructors

SetBase()

Methods

toString() → String
inherited
Returns a string representation of this object.
clear() → void
inherited
Removes all elements in the set.
addAll(Iterable<E> elements) → void
inherited
Adds all [elements] to this Set.
removeAll(Iterable<Object> elements) → void
inherited
Removes each element of [elements] from this set.
retainAll(Iterable<Object> elements) → void
inherited
Removes all elements of this set that are not elements in [elements].
removeWhere(bool test(E element)) → void
inherited
Removes all elements of this set that satisfy [test].
retainWhere(bool test(E element)) → void
inherited
Removes all elements of this set that fail to satisfy [test].
containsAll(Iterable<Object> other) → bool
inherited
Returns whether this Set contains all the elements of [other].
union(Set<E> other) → Set<E>
inherited
Returns a new set which contains all the elements of this set and [other].
intersection(Set<Object> other) → Set<E>
inherited
Returns a new set which is the intersection between this set and [other].
difference(Set<Object> other) → Set<E>
inherited
Returns a new set with the the elements of this that are not in [other].
toList({bool growable: true}) → List<E>
inherited
Creates a [List] containing the elements of this [Iterable].
map(dynamic f(E element)) → Iterable
inherited
Returns a new lazy [Iterable] with elements that are created by calling f on each element of this Iterable in iteration order.
where(bool f(E element)) → Iterable<E>
inherited
Returns a new lazy [Iterable] with all elements that satisfy the predicate [test].
expand(Iterable f(E element)) → Iterable
inherited
Expands each element of this [Iterable]into zero or more elements.
forEach(void f(E element)) → void
inherited
Applies the function [f] to each element of this collection in iteration order.
reduce(E combine(E value, E element)) → E
inherited
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
fold(initialValue, dynamic combine(previousValue, E element)) → dynamic
inherited
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
every(bool f(E element)) → bool
inherited
Checks whether every element of this iterable satisfies [test].
join([String separator = ""]) → String
inherited
Converts each element to a [String] and concatenates the strings.
any(bool test(E element)) → bool
inherited
Checks whether any element of this iterable satisfies [test].
take(int n) → Iterable<E>
inherited
Returns a lazy iterable of the [count] first elements of this iterable.
takeWhile(bool test(E value)) → Iterable<E>
inherited
Returns a lazy iterable of the leading elements satisfying [test].
skip(int n) → Iterable<E>
inherited
Returns an Iterable that provides all but the first [count] elements.
skipWhile(bool test(E value)) → Iterable<E>
inherited
Returns an Iterable that skips leading elements while [test] is satisfied.
firstWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the first element that satisfies the given predicate [test].
lastWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the last element that satisfies the given predicate [test].
singleWhere(bool test(E value)) → E
inherited
Returns the single element that satisfies [test].
elementAt(int index) → E
inherited
Returns the [index]th element.
remove(Object element) → bool
inherited
Removes [value] from the set. Returns true if [value] was in the set. Returns false otherwise. The method has no effect if [value] value was not in the set.
take(int n) → Iterable<E>
inherited
Returns a lazy iterable of the [count] first elements of this iterable.
map(dynamic f(E element)) → Iterable
inherited
Returns a new lazy [Iterable] with elements that are created by calling f on each element of this Iterable in iteration order.
intersection(Set<Object> other) → Set<E>
inherited
Returns a new set which is the intersection between this set and [other].
takeWhile(bool test(E value)) → Iterable<E>
inherited
Returns a lazy iterable of the leading elements satisfying [test].
fold(initialValue, dynamic combine(previousValue, E element)) → dynamic
inherited
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
toSet() → Set<E>
inherited
Creates a [Set] containing the same elements as this iterable.
firstWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the first element that satisfies the given predicate [test].
forEach(void f(E element)) → void
inherited
Applies the function [f] to each element of this collection in iteration order.
difference(Set<Object> other) → Set<E>
inherited
Returns a new set with the the elements of this that are not in [other].
skipWhile(bool test(E value)) → Iterable<E>
inherited
Returns an Iterable that skips leading elements while [test] is satisfied.
contains(Object element) → bool
inherited
Returns true if [value] is in the set.
union(Set<E> other) → Set<E>
inherited
Returns a new set which contains all the elements of this set and [other].
add(E element) → bool
inherited
Adds [value] into the set. Returns true if [value] was added to the set.
lastWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the last element that satisfies the given predicate [test].
singleWhere(bool test(E value)) → E
inherited
Returns the single element that satisfies [test].
addAll(Iterable<E> elements) → void
inherited
Adds all [elements] to this Set.
reduce(E combine(E value, E element)) → E
inherited
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
removeWhere(bool test(E element)) → void
inherited
Removes all elements of this set that satisfy [test].
any(bool test(E element)) → bool
inherited
Checks whether any element of this iterable satisfies [test].
every(bool f(E element)) → bool
inherited
Checks whether every element of this iterable satisfies [test].
toList({bool growable: true}) → List<E>
inherited
Creates a [List] containing the elements of this [Iterable].
where(bool f(E element)) → Iterable<E>
inherited
Returns a new lazy [Iterable] with all elements that satisfy the predicate [test].
lookup(E element) → E
inherited
If an object equal to [object] is in the set, return it.
skip(int n) → Iterable<E>
inherited
Returns an Iterable that provides all but the first [count] elements.
expand(Iterable f(E element)) → Iterable
inherited
Expands each element of this [Iterable]into zero or more elements.
retainWhere(bool test(E element)) → void
inherited
Removes all elements of this set that fail to satisfy [test].
elementAt(int index) → E
inherited
Returns the [index]th element.