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.

Inheritance

Static Methods

setToString(Set set) String

Convert a Set to a string as {each, element, as, string}.

Constructors

SetBase()

Properties

first → E

read-only, inherited
hashCode int

The hash code for this object.

read-only, inherited
isEmpty bool

read-only, inherited
isNotEmpty bool

read-only, inherited
iterator Iterator<E>

read-only, inherited
last → E

read-only, inherited
length int

read-only, inherited
runtimeType Type

A representation of the runtime type of the object.

read-only, inherited
single → E

read-only, inherited

Operators

operator ==(other) bool

The equality operator.

inherited

Methods

add(E element) bool

Adds value to the set.

inherited
addAll(Iterable<E> elements) → void

Adds all elements to this Set.

inherited
any(bool test(E element)) bool

Checks whether any element of this iterable satisfies test.

inherited
clear() → void

Removes all elements in the set.

inherited
contains(Object element) bool

Returns true if value is in the set.

inherited
containsAll(Iterable<Object> other) bool

Returns whether this Set contains all the elements of other.

inherited
difference(Set<Object> other) Set<E>

Returns a new set with the elements of this that are not in other.

inherited
elementAt(int index) → E

Returns the indexth element.

inherited
every(bool f(E element)) bool

Checks whether every element of this iterable satisfies test.

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

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

inherited
firstWhere(bool test(E value), { 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
forEach(void f(E element)) → void

Applies the function f to each element of this collection in iteration order.

inherited
intersection(Set<Object> other) Set<E>

Returns a new set which is the intersection between this set and other.

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

Converts each element to a String and concatenates the strings.

inherited
lastWhere(bool test(E value), { E orElse() }) → E

Returns the last element that satisfies the given predicate test.

inherited
lookup(Object element) → E

If an object equal to object is in the set, return it.

inherited
map<T>(T f(E element)) Iterable<T>

Returns a new lazy Iterable with elements that are created by calling f on each element of this Iterable in iteration order.

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
remove(Object element) bool

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.

inherited
removeAll(Iterable<Object> elements) → void

Removes each element of elements from this set.

inherited
removeWhere(bool test(E element)) → void

Removes all elements of this set that satisfy test.

inherited
retainAll(Iterable<Object> elements) → void

Removes all elements of this set that are not elements in elements.

inherited
retainWhere(bool test(E element)) → void

Removes all elements of this set that fail to satisfy test.

inherited
singleWhere(bool test(E value)) → 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 value)) 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 value)) 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

Returns a string representation of this object.

inherited
union(Set<E> other) Set<E>

Returns a new set which contains all the elements of this set and other.

inherited
where(bool f(E element)) Iterable<E>

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

inherited