SetMixin<E> class

Mixin 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 mixin 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 mixin should consider also implementing clear in constant time. The default implementation works by removing every element.

Implements
Implemented by

Constructors

SetMixin()

Properties

first → E
Returns the first element. [...]
read-only
isEmpty → bool
Returns true if there are no elements in this collection. [...]
read-only
isNotEmpty → bool
Returns true if there is at least one element in this collection. [...]
read-only
iterator → Iterator<E>
Provides an iterator that iterates over the elements of this set. [...]
read-only
last → E
Returns the last element. [...]
read-only
length → int
Returns the number of elements in the iterable. [...]
read-only
single → E
Checks that this iterable has only one element, and returns that element. [...]
read-only
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

add(E value) → bool
Adds value to the set. [...]
addAll(Iterable<E> elements) → void
Adds all elements to this Set. [...]
any(bool test(E element)) → bool
Checks whether any element of this iterable satisfies test. [...]
cast<R>() → Set<R>
Provides a view of this set as a set of R instances. [...]
clear() → void
Removes all elements in the set.
contains(Object element) → bool
Returns true if value is in the set.
containsAll(Iterable<Object> other) → bool
Returns whether this Set contains all the elements of other.
difference(Set<Object> other) → Set<E>
Returns a new set with the elements of this that are not in other. [...]
elementAt(int index) → E
Returns the indexth element. [...]
every(bool f(E element)) → bool
Checks whether every element of this iterable satisfies test. [...]
expand<T>(Iterable<T> f(E element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements. [...]
firstWhere(bool test(E value), { E orElse() }) → E
Returns the first element that satisfies the given predicate test. [...]
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 [...]
followedBy(Iterable<E> other) → Iterable<E>
Returns the lazy concatentation of this iterable and other. [...]
forEach(void f(E element)) → void
Applies the function f to each element of this collection in iteration order.
intersection(Set<Object> other) → Set<E>
Returns a new set which is the intersection between this set and other. [...]
join([String separator = "" ]) → String
Converts each element to a String and concatenates the strings. [...]
lastWhere(bool test(E value), { E orElse() }) → E
Returns the last element that satisfies the given predicate test. [...]
lookup(Object element) → E
If an object equal to object is in the set, return it. [...]
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. [...]
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. [...]
remove(Object value) → 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.
removeAll(Iterable<Object> elements) → void
Removes each element of elements from this set.
removeWhere(bool test(E element)) → void
Removes all elements of this set that satisfy test.
retainAll(Iterable<Object> elements) → void
Removes all elements of this set that are not elements in elements. [...]
retainWhere(bool test(E element)) → void
Removes all elements of this set that fail to satisfy test.
singleWhere(bool test(E value), { E orElse() }) → E
Returns the single element that satisfies test. [...]
skip(int n) → Iterable<E>
Returns an Iterable that provides all but the first count elements. [...]
skipWhile(bool test(E value)) → Iterable<E>
Returns an Iterable that skips leading elements while test is satisfied. [...]
take(int n) → Iterable<E>
Returns a lazy iterable of the count first elements of this iterable. [...]
takeWhile(bool test(E value)) → Iterable<E>
Returns a lazy iterable of the leading elements satisfying test. [...]
toList({bool growable: true }) → List<E>
Creates a List containing the elements of this Iterable. [...]
toSet() → Set<E>
toString() → String
Returns a string representation of this object.
union(Set<E> other) → Set<E>
Returns a new set which contains all the elements of this set and other. [...]
where(bool f(E element)) → Iterable<E>
Returns a new lazy Iterable with all elements that satisfy the predicate test. [...]
whereType<T>() → Iterable<T>
Returns a new lazy Iterable with all elements that have type T. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited

Operators

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