Base implementation of Set.
This class provides a base implementation of a Set
that depends only
on the abstract members: add, contains, lookup, remove,
iterator, length and toSet.
Some of the methods assume that toSet
creates a modifiable set.
If using this base class for an unmodifiable set,
where toSet
should return an unmodifiable set,
it's necessary to reimplement
retainAll, union, intersection and difference.
Implementations of Set
using this base should consider also implementing
clear
in constant time. The default implementation works by removing every
element.
Static Methods
-
setToString(
Set set) → String -
Convert a
Set
to a string as{each, element, as, string}
.
Properties
Constructors
- SetBase()
Methods
-
add(
E element) → bool -
inheritedAdds
value
into the set. Returnstrue
ifvalue
was added to the set. -
addAll(
Iterable<E> elements) → void -
inheritedAdds all
elements
to this Set. -
any(
bool test(E element)) → bool -
inheritedChecks whether any element of this iterable satisfies
test
. -
clear(
) → void -
inheritedRemoves all elements in the set.
-
contains(
Object element) → bool -
inheritedReturns true if
value
is in the set. -
containsAll(
Iterable<Object> other) → bool -
inheritedReturns whether this Set contains all the elements of
other
. -
difference(
Set<Object> other) → Set<E> -
inheritedReturns a new set with the the elements of this that are not in
other
. -
elementAt(
int index) → E -
inheritedReturns the
index
th element. -
every(
bool f(E element)) → bool -
inheritedChecks whether every element of this iterable satisfies
test
. -
expand(
Iterable f(E element)) → Iterable -
inheritedExpands each element of this
Iterable
into zero or more elements. -
firstWhere(
bool test(E value), {E orElse()}) → E -
inheritedReturns the first element that satisfies the given predicate
test
. -
fold(
initialValue, dynamic combine(previousValue, E element)) → dynamic -
inheritedReduces a collection to a single value by iteratively combining each element of the collection with an existing value
-
forEach(
void f(E element)) → void -
inheritedApplies the function
f
to each element of this collection in iteration order. -
intersection(
Set<Object> other) → Set<E> -
inheritedReturns a new set which is the intersection between this set and
other
. -
join(
[String separator = ""]) → String -
inheritedConverts each element to a
String
and concatenates the strings. -
lastWhere(
bool test(E value), {E orElse()}) → E -
inheritedReturns the last element that satisfies the given predicate
test
. -
lookup(
E element) → E -
inheritedIf an object equal to
object
is in the set, return it. -
map(
dynamic f(E element)) → Iterable -
inheritedReturns a new lazy
Iterable
with elements that are created by callingf
on each element of thisIterable
in iteration order. -
reduce(
E combine(E value, E element)) → E -
inheritedReduces a collection to a single value by iteratively combining elements of the collection using the provided function.
-
remove(
Object element) → bool -
inheritedRemoves
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. -
removeAll(
Iterable<Object> elements) → void -
inheritedRemoves each element of
elements
from this set. -
removeWhere(
bool test(E element)) → void -
inheritedRemoves all elements of this set that satisfy
test
. -
retainAll(
Iterable<Object> elements) → void -
inheritedRemoves all elements of this set that are not elements in
elements
. -
retainWhere(
bool test(E element)) → void -
inheritedRemoves all elements of this set that fail to satisfy
test
. -
singleWhere(
bool test(E value)) → E -
inheritedReturns the single element that satisfies
test
. -
skip(
int n) → Iterable<E> -
inheritedReturns an Iterable that provides all but the first
count
elements. -
skipWhile(
bool test(E value)) → Iterable<E> -
inheritedReturns an Iterable that skips leading elements while
test
is satisfied. -
take(
int n) → Iterable<E> -
inheritedReturns a lazy iterable of the
count
first elements of this iterable. -
takeWhile(
bool test(E value)) → Iterable<E> -
inheritedReturns a lazy iterable of the leading elements satisfying
test
. -
toList(
{bool growable: true}) → List<E> -
inheritedCreates a
List
containing the elements of thisIterable
. -
toSet(
) → Set<E> -
inheritedCreates a
Set
containing the same elements as this iterable. -
toString(
) → String -
inheritedReturns a string representation of this object.
-
union(
Set<E> other) → Set<E> -
inheritedReturns a new set which contains all the elements of this set and
other
. -
where(
bool f(E element)) → Iterable<E> -
inheritedReturns a new lazy
Iterable
with all elements that satisfy the predicatetest
.