A Set of objects that can be ordered relative to each other.

The set is based on a self-balancing binary tree. It allows most operations in amortized logarithmic time.

Elements of the set are compared using the compare function passed in the constructor, both for ordering and for equality. If the set contains only an object a, then set.contains(b) will return true if and only if compare(a, b) == 0, and the value of a == b is not even checked. If the compare function is omitted, the objects are assumed to be Comparable, and are compared using their Comparable.compareTo method. Non-comparable objects (including null) will not work as an element in that case.

Mixes-in

Properties

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

Constructors

SplayTreeSet([int compare(E key1, E key2), bool isValidKey(potentialKey)])
Create a new SplayTreeSet with the given compare function.
SplayTreeSet.from(Iterable elements, [int compare(E key1, E key2), bool isValidKey(potentialKey)])
Creates a SplayTreeSet that contains all elements.

Methods

add(E element) → bool
Adds value into the set. Returns true if value was added to the set.
addAll(Iterable<E> elements) → void
Adds all elements to this Set.
any(bool test(E element)) → bool
inherited
Checks whether any element of this iterable satisfies test.
clear() → void
Removes all elements in the set.
contains(Object object) → bool
Returns true if the collection contains an element equal to element.
containsAll(Iterable<Object> other) → bool
inherited
Returns whether this Set contains all the elements of other.
difference(Set<E> other) → Set<E>
Returns a new set with the the elements of this that are not in other.
elementAt(int index) → E
inherited
Returns the indexth element.
every(bool f(E element)) → bool
inherited
Checks whether every element of this iterable satisfies test.
expand(Iterable f(E element)) → Iterable
inherited
Expands each element of this Iterableinto zero or more elements.
firstWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the first element that satisfies the given predicate 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
forEach(void f(E element)) → void
inherited
Applies the function f to each element of this collection in iteration order.
intersection(Set<E> other) → Set<E>
Returns a new set which is the intersection between this set and other.
join([String separator = ""]) → String
inherited
Converts each element to a String and concatenates the strings.
lastWhere(bool test(E value), {E orElse()}) → E
inherited
Returns the last element that satisfies the given predicate test.
lookup(Object object) → E
If an object equal to object is in the set, return it.
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.
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.
remove(Object object) → 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
inherited
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
inherited
Removes all elements of this set that fail to satisfy test.
singleWhere(bool test(E value)) → E
inherited
Returns the single element that satisfies 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.
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.
toList({bool growable: true}) → List<E>
inherited
Creates a List containing the elements of this Iterable.
toSet() → Set<E>
Creates a Set containing the same elements as this iterable.
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>
inherited
Returns a new lazy Iterable with all elements that satisfy the predicate test.