UnmodifiableListView<E> class Null safety

An unmodifiable List view of another List.

The source of the elements may be a List or any Iterable with efficient Iterable.length and Iterable.elementAt.

final numbers = <int>[10, 20, 30];
final unmodifiableListView = UnmodifiableListView(numbers);

// Insert new elements into the original list.
numbers.addAll([40, 50]);
print(unmodifiableListView); // [10, 20, 30, 40, 50]

unmodifiableListView.remove(20); // Throws.
Inheritance
Available Extensions

Constructors

UnmodifiableListView(Iterable<E> source)
Creates an unmodifiable list backed by source. [...]

Properties

first ↔ E
Returns the first element. [...]
read / write, inherited
hashCode → int
The hash code for this object. [...]
read-only, inherited
isEmpty → bool
Whether this collection has no elements. [...]
read-only, inherited
isNotEmpty → bool
Whether this collection has at least one element. [...]
read-only, inherited
iterator → Iterator<E>
Returns a new Iterator that allows iterating the elements of this Iterable. [...]
read-only, inherited
last ↔ E
Returns the last element. [...]
read / write, inherited
length ↔ int
The number of objects in this list. [...]
read / write, inherited-setter, override-getter
reversed → Iterable<E>
An Iterable of the objects in this list in reverse order. [...]
read-only, inherited
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) → void
This operation is not supported by an unmodifiable list.
inherited
addAll(Iterable<E> iterable) → void
This operation is not supported by an unmodifiable list.
inherited
any(bool test(E element)) → bool
Checks whether any element of this iterable satisfies test. [...]
inherited
asMap() → Map<int, E>
An unmodifiable Map view of this list. [...]
inherited
cast<R>() → List<R>
Returns a view of this list as a list of R instances. [...]
override
clear() → void
This operation is not supported by an unmodifiable list.
inherited
contains(Object? element) → bool
Whether the collection contains an element equal to element. [...]
inherited
elementAt(int index) → E
Returns the indexth element. [...]
inherited
every(bool test(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
fillRange(int start, int end, [E? fillValue]) → void
This operation is not supported by an unmodifiable list.
inherited
firstWhere(bool test(E element), {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 action(E element)) → void
Invokes action on each element of this iterable in iteration order. [...]
inherited
getRange(int start, int end) → Iterable<E>
Creates an Iterable that iterates over a range of elements. [...]
inherited
indexOf(Object? element, [int start = 0]) → int
The first index of element in this list. [...]
inherited
indexWhere(bool test(E element), [int start = 0]) → int
The first index in the list that satisfies the provided test. [...]
inherited
insert(int index, E element) → void
This operation is not supported by an unmodifiable list.
inherited
insertAll(int at, Iterable<E> iterable) → void
This operation is not supported by an unmodifiable list.
inherited
join([String separator = ""]) → String
Converts each element to a String and concatenates the strings. [...]
inherited
lastIndexOf(Object? element, [int? start]) → int
The last index of element in this list. [...]
inherited
lastIndexWhere(bool test(E element), [int? start]) → int
The last index in the list that satisfies the provided test. [...]
inherited
lastWhere(bool test(E element), {E orElse()?}) → E
Returns the last element that satisfies the given predicate test. [...]
inherited
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 previousValue, 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
This operation is not supported by an unmodifiable list.
inherited
removeAt(int index) → E
This operation is not supported by an unmodifiable list.
inherited
removeLast() → E
This operation is not supported by an unmodifiable list.
inherited
removeRange(int start, int end) → void
This operation is not supported by an unmodifiable list.
inherited
removeWhere(bool test(E element)) → void
This operation is not supported by an unmodifiable list.
inherited
replaceRange(int start, int end, Iterable<E> iterable) → void
This operation is not supported by an unmodifiable list.
inherited
retainWhere(bool test(E element)) → void
This operation is not supported by an unmodifiable list.
inherited
setAll(int at, Iterable<E> iterable) → void
This operation is not supported by an unmodifiable list.
inherited
setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) → void
This operation is not supported by an unmodifiable list.
inherited
shuffle([Random? random]) → void
This operation is not supported by an unmodifiable list.
inherited
singleWhere(bool test(E element), {E orElse()?}) → E
Returns the single element that satisfies test. [...]
inherited
skip(int count) → Iterable<E>
Returns an Iterable that provides all but the first count elements. [...]
inherited
skipWhile(bool test(E element)) → Iterable<E>
Returns an Iterable that skips leading elements while test is satisfied. [...]
inherited
sort([Comparator<E>? compare]) → void
This operation is not supported by an unmodifiable list.
inherited
sublist(int start, [int? end]) → List<E>
Returns a new list containing the elements between start and end. [...]
inherited
take(int count) → Iterable<E>
Returns a lazy iterable of the count first elements of this iterable. [...]
inherited
takeWhile(bool test(E element)) → 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. [...]
inherited
toString() → String
A string representation of this object. [...]
inherited
where(bool test(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 +(List<E> other) → List<E>
Returns the concatenation of this list and other. [...]
inherited
operator ==(Object other) → bool
The equality operator. [...]
inherited
operator [](int index) → E
The object at the given index in the list. [...]
override
operator []=(int index, E value) → void
This operation is not supported by an unmodifiable list.
inherited