UnmodifiableListView class - dart:collection library (original) (raw)
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
Implemented types
- List<E>
Available extensions
Constructors
UnmodifiableListView(Iterable<E> source)
Creates an unmodifiable list backed by source.
Properties
first ↔ E
The first element.
getter/setter pairinherited
firstOrNull → T?
Available on Iterable<T>, provided by the IterableExtensions extension
The first element of this iterator, or null if the iterable is empty.
no setter
The hash code for this object.
no setterinherited
Available on Iterable<T>, provided by the IterableExtensions extension
Pairs of elements of the indices and elements of this iterable.
no setter
Whether this collection has no elements.
no setterinherited
Whether this collection has at least one element.
no setterinherited
A new Iterator that allows iterating the elements of this Iterable.
no setterinherited
last ↔ E
The last element.
getter/setter pairinherited
lastOrNull → T?
Available on Iterable<T>, provided by the IterableExtensions extension
The last element of this iterable, or null if the iterable is empty.
no setter
The number of objects in this list.
getter/setter pairinherited-setteroverride-getter
Available on Iterable<T?>, provided by the NullableIterableExtensions extension
The non-null elements of this iterable.
no setter
An Iterable of the objects in this list in reverse order.
no setterinherited
A representation of the runtime type of the object.
no setterinherited
single → E
Checks that this iterable has only one element, and returns that element.
no setterinherited
singleOrNull → T?
Available on Iterable<T>, provided by the IterableExtensions extension
The single element of this iterator, or null.
no setter
Available on List<T>, provided by the ListToJSArray extension
Converts this List to a JSArray by either casting, unwrapping, or cloning the List.
no setter
toJSProxyOrRef → JSArray<T>
Available on List<T>, provided by the ListToJSArray extension
Converts this List to a JSArray by either casting, unwrapping, or proxying the List.
no setter
Available on Iterable<Future<T>>, provided by the FutureIterable extension
Waits for futures in parallel.
no setter
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
An unmodifiable Map view of this list.
inherited
Available on Iterable<T>, provided by the EnumByName extension
Creates a map from the names of enum values to the values.
Available on Iterable<T>, provided by the EnumByName extension
Finds the enum value in this list with name name.
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
Returns the indexth element.
inherited
elementAtOrNull(int index)→ T?
Available on Iterable<T>, provided by the IterableExtensions extension
The element at position index of this iterable, or null.
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
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>
Creates 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
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 nonexistent 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
This operation is not supported by an unmodifiable list.
inherited
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
The single element that satisfies test.
inherited
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(E element))→ Iterable<E>
Creates 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
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(E element))→ Iterable<E>
Creates 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
Creates a Set containing the same elements as this iterable.
inherited
A string representation of this object.
inherited
where(bool test(E element))→ Iterable<E>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
Creates 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