class
SplayTreeSet<E>

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

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

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