BuiltSet<E> class Null safety

The Built Collection Set.

It implements Iterable and the non-mutating part of the Set interface. Iteration is in the same order in which the elements were inserted. Modifications are made via SetBuilder.

See the Built Collection library documentation for the general properties of Built Collections.

Implemented types
Available Extensions

Constructors

BuiltSet([Iterable iterable = const []])
Instantiates with elements from an Iterable.
factory
BuiltSet.build(dynamic updates(SetBuilder<E>))
Creates a SetBuilder, applies updates to it, and builds.
factory
BuiltSet.from(Iterable iterable)
Instantiates with elements from an Iterable.
factory
BuiltSet.of(Iterable<E> iterable)
Instantiates with elements from an Iterable<E>.
factory

Properties

first → E
Returns the first element.
read-onlyoverride
hashCode → int
Deep hashCode.
read-onlyoverride
isEmpty → bool
Whether this collection has no elements.
read-onlyoverride
isNotEmpty → bool
Whether this collection has at least one element.
read-onlyoverride
iterator → Iterator<E>
Returns a new Iterator that allows iterating the elements of this Iterable.
read-onlyoverride
last → E
Returns the last element.
read-onlyoverride
length → int
As Set.length.
read-onlyoverride
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-onlyoverride

Methods

any(bool test(E)) → bool
Checks whether any element of this iterable satisfies test.
override
asSet() → Set<E>
Returns as an immutable set.
cast<T>() → Iterable<T>
Provides a view of this iterable as an iterable of R instances.
override
contains(Object? element) → bool
Whether the collection contains an element equal to element.
override
containsAll(Iterable<Object?> other) → bool
As Set.containsAll.
difference(BuiltSet<Object?> other) → BuiltSet<E>
As Set.difference but takes a BuiltSet<Object?> and returns a BuiltSet<E>.
elementAt(int index) → E
Returns the indexth element.
override
every(bool test(E)) → bool
Checks whether every element of this iterable satisfies test.
override
expand<T>(Iterable<T> f(E)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
override
firstWhere(bool test(E), {E orElse()?}) → E
Returns the first element that satisfies the given predicate test.
override
fold<T>(T initialValue, T combine(T, E)) → 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 concatenation of this iterable and other.
override
forEach(void f(E)) → void
Invokes action on each element of this iterable in iteration order.
override
intersection(BuiltSet<Object?> other) → BuiltSet<E>
As Set.intersection but takes a BuiltSet<Object?> and returns a BuiltSet<E>.
join([String separator = '']) → String
Converts each element to a String and concatenates the strings.
override
lastWhere(bool test(E), {E orElse()?}) → E
Returns the last element that satisfies the given predicate test.
override
lookup(Object? object) → E?
As Set.lookup.
map<T>(T f(E)) → Iterable<T>
The current elements of this iterable modified by toElement.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
rebuild(dynamic updates(SetBuilder<E>)) → BuiltSet<E>
Converts to a SetBuilder, applies updates to it, and builds.
reduce(E combine(E, E)) → E
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
override
singleWhere(bool test(E), {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)) → 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)) → Iterable<E>
Returns a lazy iterable of the leading elements satisfying test.
override
toBuilder() → SetBuilder<E>
Converts to a SetBuilder for modification.
toBuiltList() → BuiltList<E>
Converts to a BuiltList.
toBuiltSet() → BuiltSet<E>
Converts to a BuiltSet.
toList({bool growable = true}) → List<E>
Creates a List containing the elements of this Iterable.
override
toSet() → Set<E>
As Iterable.toSet.
override
toString() → String
A string representation of this object.
override
union(BuiltSet<E> other) → BuiltSet<E>
As Set.union but takes and returns a BuiltSet<E>.
where(bool test(E)) → 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

Operators

operator ==(Object other) → bool
Deep equality.
override