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
Setto a string as{each, element, as, string}.
Constructors
- SetBase()
Properties
- first → E
-
read-only, inherited
- hashCode → int
-
Get a hash code for this object.
read-only, inherited - isEmpty → bool
-
read-only, inherited
- isNotEmpty → bool
-
read-only, inherited
- iterator → Iterator<E>
-
read-only, inherited
- last → E
-
read-only, inherited
- length → int
-
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited - single → E
-
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
add(
E element) → bool -
Adds
valueto the set.inherited -
addAll(
Iterable<E> elements) → void -
Adds all
elementsto this Set.inherited -
any(
bool test(E element)) → bool -
Checks whether any element of this iterable satisfies
test.inherited -
clear(
) → void -
Removes all elements in the set.
inherited -
contains(
Object element) → bool -
Returns true if
valueis in the set.inherited -
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.inherited -
elementAt(
int index) → E -
Returns the
indexth element.inherited -
every(
bool f(E element)) → bool -
Checks whether every element of this iterable satisfies
test.inherited -
expand(
Iterable f(E element)) → Iterable -
Expands each element of this
Iterableinto 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(
initialValue, dynamic combine(previousValue, E element)) → dynamic -
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited -
forEach(
void f(E element)) → void -
Applies the function
fto 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.inherited -
join(
[String separator = ""]) → String -
Converts each element to a
Stringand 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 element) → E -
If an object equal to
objectis in the set, return it.inherited -
map(
dynamic f(E element)) → Iterable -
Returns a new lazy
Iterablewith elements that are created by callingfon each element of thisIterablein 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 element) → bool -
Removes
valuefrom the set. Returns true ifvaluewas in the set. Returns false otherwise. The method has no effect ifvaluevalue was not in the set.inherited -
removeAll(
Iterable<Object> elements) → void -
Removes each element of
elementsfrom this set.inherited -
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.inherited -
retainWhere(
bool test(E element)) → void -
Removes all elements of this set that fail to satisfy
test.inherited -
singleWhere(
bool test(E value)) → E -
Returns the single element that satisfies
test.inherited -
skip(
int n) → Iterable<E> -
Returns an
Iterablethat provides all but the firstcountelements.inherited -
skipWhile(
bool test(E value)) → Iterable<E> -
Returns an
Iterablethat skips leading elements whiletestis satisfied.inherited -
take(
int n) → Iterable<E> -
Returns a lazy iterable of the
countfirst 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
Listcontaining the elements of thisIterable.inherited -
toSet(
) → Set<E> -
Creates a
Setcontaining the same elements as this iterable.inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
union(
Set<E> other) → Set<E> -
Returns a new set which contains all the elements of this set and
other.inherited -
where(
bool f(E element)) → Iterable<E> -
Returns a new lazy
Iterablewith all elements that satisfy the predicatetest.inherited