UnmodifiableSetView<E> class
Null safety
An unmodifiable Set view of another Set.
Methods that could change the set, such as add and remove, must not be called.
Constructors
-
UnmodifiableSetView(Set<
E> source) -
Creates an UnmodifiableSetView of
source
.
Properties
- first → E
-
Returns the first element. [...]
read-only, inherited
- 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, inherited - isNotEmpty → bool
-
Returns true if there is at least one element in this collection. [...]
read-only, inherited
-
iterator
→ Iterator<
E> -
An iterator that iterates over the elements of this set. [...]
read-only, override
- last → E
-
Returns the last element. [...]
read-only, inherited
- length → int
-
Returns the number of elements in the iterable. [...]
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, inherited
Methods
-
add(
E value) → bool -
This operation is not supported by an unmodifiable set.
inherited
-
addAll(
Iterable< E> elements) → void -
This operation is not supported by an unmodifiable set.
inherited
-
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 set as a set of
R
instances. [...]inherited -
clear(
) → void -
This operation is not supported by an unmodifiable set.
inherited
-
contains(
Object? element) → bool -
Whether
value
is in the set.override -
containsAll(
Iterable< Object?> other) → bool -
Whether this set contains all the elements of
other
.inherited -
difference(
Set< Object?> other) → Set<E> -
Creates a new set with the elements of this that are not in
other
. [...]inherited -
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 -
Invokes
action
on each element of this iterable in iteration order.inherited -
intersection(
Set< Object?> other) → Set<E> -
Creates a new set which is the intersection between this set and
other
. [...]inherited -
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? element) → E? -
If an object equal to
object
is in the set, return it. [...]override -
map<
T> (T f(E element)) → Iterable< T> -
The current elements of this iterable modified by
toElement
. [...]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? value) → bool -
This operation is not supported by an unmodifiable set.
inherited
-
removeAll(
Iterable< Object?> elements) → void -
This operation is not supported by an unmodifiable set.
inherited
-
removeWhere(
bool test(E element)) → void -
This operation is not supported by an unmodifiable set.
inherited
-
retainAll(
Iterable< Object?> elements) → void -
This operation is not supported by an unmodifiable set.
inherited
-
retainWhere(
bool test(E element)) → void -
This operation is not supported by an unmodifiable set.
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 with the same elements and behavior as this
Set
. [...]override -
toString(
) → String -
A string representation of this object. [...]
inherited
-
union(
Set< E> other) → Set<E> -
Creates 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 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