SplayTreeSet<E> class Null safety
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
- IterableMixin<
E> - SetMixin<
E>
- IterableMixin<
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)])
-
Creates a SplayTreeSet that contains all
elements
. [...]factory -
SplayTreeSet.of(Iterable<
E> elements, [int compare(E key1, E key2), bool isValidKey(dynamic potentialKey)]) -
Creates a SplayTreeSet from
elements
. [...]factory
Properties
- first → E
-
Returns the first element. [...]
read-only, override
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isEmpty → bool
-
Returns
true
if there are no elements in this collection. [...]read-only, override - isNotEmpty → bool
-
Returns true if there is at least one element in this collection. [...]
read-only, override
-
iterator
→ Iterator<
E> -
Returns a new
Iterator
that allows iterating the elements of thisIterable
. [...]read-only, override - last → E
-
Returns the last element. [...]
read-only, override
- length → int
-
Returns the number of elements in this. [...]
read-only, override
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- single → E
-
Checks that this iterable has only one element, and returns that element. [...]
read-only, override
Methods
-
add(
E element) → bool -
Adds
value
to the set. [...]override -
addAll(
Iterable< E> elements) → void -
Adds all
elements
to this Set. [...]override -
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 iterable as an iterable of
R
instances. [...]override -
clear(
) → void -
Removes all elements in the set.
override
-
contains(
Object? element) → bool -
Returns true if the collection contains an element equal to
element
. [...]override -
containsAll(
Iterable< Object?> other) → bool -
Returns whether this Set contains all the elements of
other
.inherited -
difference(
Set< Object?> other) → Set<E> -
Returns a new set with the elements of this that are not in
other
. [...]override -
elementAt(
int index) → E -
Returns the
index
th 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 -
Returns 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> -
Returns the lazy concatenation of this iterable and
other
. [...]inherited -
forEach(
void f(E element)) → void -
Applies the function
f
to each element of this collection in iteration order.inherited -
intersection(
Set< Object?> other) → Set<E> -
Returns a new set which is the intersection between this set and
other
. [...]override -
join(
[String separator = ""]) → String -
Converts each element to a String and concatenates the strings. [...]
inherited
-
lastWhere(
bool test(E value), {E orElse()}) → E -
Returns the last element that satisfies the given predicate
test
. [...]inherited -
lookup(
Object? object) → E? -
If an object equal to
object
is in the set, return it. [...]override -
map<
T> (T f(E element)) → Iterable< T> -
Returns a new lazy Iterable with elements that are created by
calling
f
on each element of thisIterable
in iteration order. [...]inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent 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? object) → bool -
Removes
value
from the set. Returns true ifvalue
was in the set. Returns false otherwise. The method has no effect ifvalue
value was not in the set.override -
removeAll(
Iterable< Object?> elements) → void -
Removes each element of
elements
from this set.override -
removeWhere(
bool test(E element)) → void -
Removes all elements of this set that satisfy
test
.inherited -
retainAll(
Iterable< Object?> elements) → void -
Removes all elements of this set that are not elements in
elements
. [...]override -
retainWhere(
bool test(E element)) → void -
Removes all elements of this set that fail to satisfy
test
.inherited -
singleWhere(
bool test(E value), {E orElse()}) → E -
Returns the single element that satisfies
test
. [...]inherited -
skip(
int n) → Iterable< E> -
Returns an Iterable that provides all but the first
count
elements. [...]inherited -
skipWhile(
bool test(E value)) → Iterable< E> -
Returns an
Iterable
that skips leading elements whiletest
is satisfied. [...]inherited -
take(
int n) → Iterable< E> -
Returns a lazy iterable of the
count
first elements of this iterable. [...]inherited -
takeWhile(
bool test(E value)) → Iterable< E> -
Returns 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 containing the same elements as this iterable. [...]
override
-
toString(
) → String -
Returns a string representation of this object.
override
-
union(
Set< E> other) → Set<E> -
Returns a new set which contains all the elements of this set and
other
. [...]override -
where(
bool f(E element)) → Iterable< E> -
Returns a new lazy Iterable with all elements that satisfy the
predicate
test
. [...]inherited -
whereType<
T> () → Iterable< T> -
Returns a new lazy Iterable with all elements that have type
T
. [...]inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited