UnionSet<E> class
A single set that provides a view of the union over a set of sets.
Since this is just a view, it reflects all changes in the underlying sets.
If an element is in multiple sets and the outer set is ordered, the version
in the earliest inner set is preferred. Component sets are assumed to use
== and hashCode for equality.
- Inheritance
- Mixed in types
- Available Extensions
Constructors
Properties
- first → E
-
The first element.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- isEmpty → bool
-
Whether this collection has no elements.
no setterinherited
- isNotEmpty → bool
-
Whether this collection has at least one element.
no setterinherited
-
iterator
→ Iterator<
E> -
An iterator that iterates over the elements of this set.
no setteroverride
- last → E
-
The last element.
no setterinherited
- length → int
-
The number of elements in this Iterable.
no setteroverride
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- single → E
-
Checks that this iterable has only one element, and returns that element.
no setterinherited
Methods
-
add(
E value) → bool -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
addAll(
Iterable< E> elements) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
any(
bool test(E element)) → bool -
Checks whether any element of this iterable satisfies
test.inherited -
cast<
R> () → Set< R> -
Provides a view of this set as a set of
Rinstances.inherited -
clear(
) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
contains(
Object? element) → bool -
Whether
valueis in the set.override -
containsAll(
Iterable< Object?> other) → bool -
Whether this set contains all the elements of
other.inherited -
difference(
Set< Object?> other) → Set<E> -
Creates 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 -
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
-
followedBy(
Iterable< E> other) → Iterable<E> -
Creates the lazy concatenation of this iterable and
other.inherited -
forEach(
void f(E element)) → void -
Invokes
actionon each element of this iterable in iteration order.inherited -
intersection(
Set< Object?> other) → Set<E> -
Creates 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 -
The last element that satisfies the given predicate
test.inherited -
lookup(
Object? element) → E? -
If an object equal to
objectis in the set, return it.override -
map<
T> (T f(E element)) → Iterable< T> -
The current elements of this iterable modified by
toElement.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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? value) → bool -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
removeAll(
Iterable elements) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
removeWhere(
bool test(E)) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
retainAll(
Iterable elements) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
retainWhere(
bool test(E)) → void -
Throws an UnsupportedError;
operations that change the set are disallowed.
inherited
-
singleWhere(
bool test(E value), {E orElse()?}) → E -
The single element that satisfies
test.inherited -
skip(
int n) → Iterable< E> -
Creates an Iterable that provides all but the first
countelements.inherited -
skipWhile(
bool test(E value)) → Iterable< E> -
Creates an
Iterablethat skips leading elements whiletestis satisfied.inherited -
take(
int n) → Iterable< E> -
Creates a lazy iterable of the
countfirst elements of this iterable.inherited -
takeWhile(
bool test(E value)) → Iterable< E> -
Creates 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 with the same elements and behavior as this
Set.override -
toString(
) → String -
A string representation of this object.
inherited
-
union(
Set< E> other) → Set<E> -
Creates a new set which contains all the elements of this set and
other.inherited -
where(
bool f(E element)) → Iterable< E> -
Creates a new lazy Iterable with all elements that satisfy the
predicate
test.inherited -
whereType<
T> () → Iterable< T> -
Creates a new lazy Iterable with all elements that have type
T.inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited