NonGrowableListView<E> class Null safety

A fixed-length list.

A NonGrowableListView contains a List object and ensures that its length does not change. Methods that would change the length of the list, such as add and remove, throw an UnsupportedError. All other methods work directly on the underlying list.

This class does allow changes to the contents of the wrapped list. You can, for example, sort the list. Permitted operations defer to the wrapped list.

Inheritance
Mixed in types
Available Extensions

Constructors

NonGrowableListView(List<E> listBase)

Properties

first ↔ E
Returns the first element.
read / writeinherited
hashCode → int
The hash code for this object.
read-onlyinherited
isEmpty → bool
Whether this collection has no elements.
read-onlyinherited
isNotEmpty → bool
Whether this collection has at least one element.
read-onlyinherited
iterator → Iterator<E>
Returns a new Iterator that allows iterating the elements of this Iterable.
read-onlyinherited
last ↔ E
Returns the last element.
read / writeinherited
length ↔ int
Returns the number of elements in this.
read / writeinherited
reversed → Iterable<E>
An Iterable of the objects in this list in reverse order.
read-onlyinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
single → E
Checks that this iterable has only one element, and returns that element.
read-onlyinherited

Methods

add(E value) → bool
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
addAll(Iterable<E> iterable) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
any(bool test(E)) → bool
Checks whether any element of this iterable satisfies test.
inherited
asMap() → Map<int, E>
An unmodifiable Map view of this list.
inherited
cast<T>() → List<T>
Provides a view of this iterable as an iterable of R instances.
inherited
clear() → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
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)) → bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> f(E)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
fillRange(int start, int end, [E? fillValue]) → void
Overwrites a range of elements with fillValue.
inherited
firstWhere(bool test(E), {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)) → 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(E element, [int start = 0]) → int
The first index of element in this list.
inherited
indexWhere(bool test(E), [int start = 0]) → int
The first index in the list that satisfies the provided test.
inherited
insert(int index, E element) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
insertAll(int index, Iterable<E> iterable) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
join([String separator = '']) → String
Converts each element to a String and concatenates the strings.
inherited
lastIndexOf(E element, [int? start]) → int
The last index of element in this list.
inherited
lastIndexWhere(bool test(E), [int? start]) → int
The last index in the list that satisfies the provided test.
inherited
lastWhere(bool test(E), {E orElse()?}) → E
Returns the last element that satisfies the given predicate test.
inherited
map<T>(T f(E)) → 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
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
removeAt(int index) → E
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
removeLast() → E
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
removeRange(int start, int end) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
removeWhere(bool test(E)) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
replaceRange(int start, int end, Iterable<E> iterable) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
retainWhere(bool test(E)) → void
Throws an UnsupportedError; operations that change the length of the list are disallowed.
inherited
retype<T>() → List<T>
Deprecated("Use cast instead")">@Deprecated("Use cast instead")inherited
setAll(int index, Iterable<E> iterable) → void
Overwrites elements with the objects of iterable.
inherited
setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
inherited
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
inherited
singleWhere(bool test(E), {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)) → Iterable<E>
Returns an Iterable that skips leading elements while test is satisfied.
inherited
sort([int compare(E, E)?]) → void
Sorts this list according to the order specified by the compare function.
inherited
sublist(int start, [int? end]) → List<E>
Returns a new list containing the elements between start and end.
inherited
take(int n) → Iterable<E>
Returns a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(E)) → 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)) → 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.
inherited
operator []=(int index, E value) → void
Sets the value at the given index in the list to value.
inherited