dart:collection
SplayTreeSet<E> class
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.
- Mixed in types
Constructors
- SplayTreeSet([int compare(E key1, E key2), bool isValidKey(dynamic potentialKey) ])
- Create a new SplayTreeSet with the given compare function. [...]
- SplayTreeSet.from(Iterable elements, [ int compare(E key1, E key2), bool isValidKey(dynamic potentialKey) ])
factory
- Creates a SplayTreeSet that contains all
elements. [...] - SplayTreeSet.of(Iterable<E> elements, [ int compare(E key1, E key2), bool isValidKey(dynamic potentialKey) ])
factory
- Creates a SplayTreeSet from
elements. [...]
Properties
- first → E
read-only, override
- Returns the first element. [...]
- isEmpty → bool
read-only, override
- Returns
true if there are no elements in this collection. [...] - isNotEmpty → bool
read-only, override
- Returns true if there is at least one element in this collection. [...]
- iterator → Iterator<E>
read-only, override
- Provides an iterator that iterates over the elements of this set. [...]
- last → E
read-only, override
- Returns the last element. [...]
- length → int
read-only, override
- Returns the number of elements in this. [...]
- single → E
read-only, override
- Checks that this iterable has only one element, and returns that element. [...]
- hashCode → int
read-only, inherited
- The hash code for this object. [...]
- runtimeType → Type
read-only, inherited
- A representation of the runtime type of the object.
Methods
- add(E element) → bool
override
- Adds
value to the set. [...] - addAll(Iterable<E> elements) → void
override
- Adds all
elements to this Set. [...] - cast<R>() → Set<R>
override
- Provides a view of this iterable as an iterable of
R instances. [...] - clear() → void
override
- Removes all elements in the set.
- contains(Object element) → bool
override
- Returns true if the collection contains an element equal to
element. [...] - difference(Set<Object> other) → Set<E>
override
- Returns a new set with the elements of this that are not in
other. [...] - intersection(Set<Object> other) → Set<E>
override
- Returns a new set which is the intersection between this set and
other. [...] - lookup(Object object) → E
override
- If an object equal to
object is in the set, return it. [...] - remove(Object object) → bool
override
- 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
override
- Removes each element of
elements from this set. - retainAll(Iterable<Object> elements) → void
override
- Removes all elements of this set that are not elements in
elements. [...] - toSet() → Set<E>
override
- Creates a Set containing the same elements as this iterable. [...]
- toString() → String
override
- Returns a string representation of this object.
- union(Set<E> other) → Set<E>
override
- Returns a new set which contains all the elements of this set and
other. [...] - any(bool test(E element)) → bool
inherited
- Checks whether any element of this iterable satisfies
test. [...] - containsAll(Iterable<Object> other) → bool
inherited
- Returns whether this Set contains all the elements of
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<T>(Iterable<T> f(E element)) → Iterable<T>
inherited
- Expands each element of this Iterable into zero or more elements. [...]
- firstWhere(bool test(E value), { E orElse() }) → E
inherited
- Returns the first element that satisfies the given predicate
test. [...] - fold<T>(T initialValue, T combine(T previousValue, E element)) → T
inherited
- 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>
inherited
- Returns the lazy concatentation of this iterable and
other. [...] - forEach(void f(E element)) → void
inherited
- Applies the function
f to each element of this collection in iteration order. - 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. [...] - map<T>(T f(E element)) → Iterable<T>
inherited
- Returns a new lazy Iterable with elements that are created by calling
f on each element of this Iterable in iteration order. [...] - noSuchMethod(Invocation invocation) → dynamic
inherited
- Invoked when a non-existent method or property is accessed. [...]
- 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. [...]
- 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. - singleWhere(bool test(E value), { E orElse() }) → 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. [...]
- where(bool f(E element)) → Iterable<E>
inherited
- Returns a new lazy Iterable with all elements that satisfy the predicate
test. [...] - whereType<T>() → Iterable<T>
inherited
- Returns a new lazy Iterable with all elements that have type
T. [...]
Operators
- operator ==(dynamic other) → bool
inherited
- The equality operator. [...]