NullableList<T> class

A list with null values, where the null values are tracked in a separate BitList. For certain types of typed lists, this is the only way to track null values.

Inheritance

• Object
• ListBase<T?>
• NullableList

Implemented types

• List<E>

Available extensions

• CompoundIterableComparator
• EnumByName
• FutureIterable
• IterableExtensions
• IterableIntExtension
• IterableNumExtension
• IterableVectorExtension
• ListPolynomialExtension
• ListToJSArray
• ListVectorExtension
• NullableIterableExtensions
• ToTensorIterableExtension

Constructors

NullableList(List<T> delegate, T defaultValue, bool isDefined)

Properties

defaultValue → T

final

defined → BitList

final

delegate → List<T>

final

first ↔ T?

The first element.

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

isEmpty → bool

Whether this collection has no elements.

no setter, inherited

isNotEmpty → bool

Whether this collection has at least one element.

no setter, inherited

iterator → Iterator<T?>

A new Iterator that allows iterating the elements of this Iterable.

no setter, inherited

last ↔ T?

The last element.

getter/setter pair, inherited

length ↔ int

The number of objects in this list.

getter/setter pair, inherited-setter, override-getter

reversed → Iterable<T?>

An Iterable of the objects in this list in reverse order.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

single → T?

Checks that this iterable has only one element, and returns that element.

no setter, inherited

Methods

add(T? value) → bool

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

addAll(Iterable<T?> iterable) → void

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

any(bool test(T? element)) → bool

Checks whether any element of this iterable satisfies test.

inherited

asMap() → Map<int, T?>

An unmodifiable Map view of this list.

inherited

cast<R>() → List<R>

Returns a view of this list as a list 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) → T?

Returns the indexth element.

inherited

every(bool test(T? element)) → bool

Checks whether every element of this iterable satisfies test.

inherited

expand<T>(Iterable<T> f(T? element)) → Iterable<T>

Expands each element of this Iterable into zero or more elements.

inherited

fillRange(int start, int end, [T? fill]) → void

Overwrites a range of elements with fillValue.

inherited

firstWhere(bool test(T? element), {T? orElse()?}) → T?

The first element that satisfies the given predicate test.

inherited

fold<T>(T initialValue, T combine(T previousValue, T? element)) → T

Reduces a collection to a single value by iteratively combining each element of the collection with an existing value

inherited

followedBy(Iterable<T?> other) → Iterable<T?>

Creates the lazy concatenation of this iterable and other.

inherited

forEach(void action(T? element)) → void

Invokes action on each element of this iterable in iteration order.

inherited

getRange(int start, int end) → Iterable<T?>

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(T? element), [int start = 0]) → int

The first index in the list that satisfies the provided test.

inherited

insert(int index, T? element) → void

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

insertAll(int index, Iterable<T?> 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(Object? element, [int? start]) → int

The last index of element in this list.

inherited

lastIndexWhere(bool test(T? element), [int? start]) → int

The last index in the list that satisfies the provided test.

inherited

lastWhere(bool test(T? element), {T? orElse()?}) → T?

The last element that satisfies the given predicate test.

inherited

map<T>(T f(T? 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(T? combine(T? previousValue, T? element)) → T?

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) → T?

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

removeLast() → T?

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(T?)) → void

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

replaceRange(int start, int end, Iterable<T?> iterable) → void

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

retainWhere(bool test(T?)) → void

Throws an UnsupportedError; operations that change the length of the list are disallowed.

inherited

setAll(int index, Iterable<T?> iterable) → void

Overwrites elements with the objects of iterable.

inherited

setRange(int start, int end, Iterable<T?> 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(T? element), {T? orElse()?}) → T?

The single element that satisfies test.

inherited

skip(int count) → Iterable<T?>

Creates an Iterable that provides all but the first count elements.

inherited

skipWhile(bool test(T? element)) → Iterable<T?>

Creates an Iterable that skips leading elements while test is satisfied.

inherited

sort([int compare(T? a, T? b)?]) → void

Sorts this list according to the order specified by the compare function.

inherited

sublist(int start, [int? end]) → List<T?>

Returns a new list containing the elements between start and end.

inherited

take(int count) → Iterable<T?>

Creates a lazy iterable of the count first elements of this iterable.

inherited

takeWhile(bool test(T? element)) → Iterable<T?>

Creates a lazy iterable of the leading elements satisfying test.

inherited

toList({bool growable = true}) → List<T?>

Creates a List containing the elements of this Iterable.

inherited

toSet() → Set<T?>

Creates a Set containing the same elements as this iterable.

inherited

toString() → String

A string representation of this object.

inherited

where(bool test(T? element)) → Iterable<T?>

Creates a new lazy Iterable with all elements that satisfy the predicate test.

inherited

whereType<T>() → Iterable<T>

Creates a new lazy Iterable with all elements that have type T.

inherited

Operators

operator +(List<T?> other) → List<T?>

Returns the concatenation of this list and other.

inherited

operator ==(Object other) → bool

The equality operator.

inherited

operator [](int index) → T?

The object at the given index in the list.

override

operator []=(int index, T? value) → void

Sets the value at the given index in the list to value.

override