class
ListMixin<E>

Base implementation of a List class.

ListMixin can be used as a mixin to make a class implement the List interface.

This implements all read operations using only the length and operator[] members. It implements write operations using those and length= and operator[]=

NOTICE: Forwarding just these four operations to a normal growable List (as created by new List()) will give very bad performance for add and addAll operations of ListBase. These operations are implemented by increasing the length of the list by one for each add operation, and repeatedly increasing the length of a growable list is not efficient. To avoid this, either override 'add' and 'addAll' to also forward directly to the growable list, or, if possible, use DelegatingList from "package:collection/wrappers.dart" instead.

Implements
Implemented by

Properties

Iterator<E> iterator
read-only
bool isEmpty
read-only
bool isNotEmpty
read-only
E first
read-only
E last
read-only
E single
read-only
Iterable<E> reversed
read-only
int length
read / write , inherited
Returns the number of objects in this list.

Constructors

ListMixin()

Operators

operator []=(int index, E value) → void
inherited
Sets the value at the given index in the list to value or throws a RangeError if index is out of bounds.
operator [](int index) → E
inherited
Returns the object at the given index in the list or throws a RangeError if index is out of bounds.

Methods

elementAt(int index) → E
Returns the [index]th element.
forEach(void action(E element)) → void
Applies the function [f] to each element of this collection in iteration order.
contains(Object element) → bool
Returns true if the collection contains an element equal to [element].
every(bool test(E element)) → bool
Checks whether every element of this iterable satisfies [test].
any(bool test(E element)) → bool
Checks whether any element of this iterable satisfies [test].
firstWhere(bool test(E element), {E orElse()}) → E
Returns the first element that satisfies the given predicate [test].
lastWhere(bool test(E element), {E orElse()}) → E
Returns the last element that satisfies the given predicate [test].
singleWhere(bool test(E element)) → E
Returns the single element that satisfies [test].
join([String separator = ""]) → String
Converts each element to a [String] and concatenates the strings.
where(bool test(E element)) → Iterable<E>
Returns a new lazy [Iterable] with all elements that satisfy the predicate [test].
map(dynamic f(E element)) → Iterable
Returns a new lazy [Iterable] with elements that are created by calling f on each element of this Iterable in iteration order.
expand(Iterable f(E element)) → Iterable
Expands each element of this [Iterable]into zero or more elements.
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.
fold(initialValue, dynamic combine(previousValue, E element)) → dynamic
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
skip(int count) → Iterable<E>
Returns an Iterable that provides all but the first [count] elements.
skipWhile(bool test(E element)) → Iterable<E>
Returns an Iterable that skips leading elements while [test] is satisfied.
take(int count) → Iterable<E>
Returns a lazy iterable of the [count] first elements of this iterable.
takeWhile(bool test(E element)) → Iterable<E>
Returns a lazy iterable of the leading elements satisfying [test].
toList({bool growable: true}) → List<E>
Creates a [List] containing the elements of this [Iterable].
toSet() → Set<E>
Creates a [Set] containing the same elements as this iterable.
add(E element) → void
Adds [value] to the end of this list, extending the length by one.
addAll(Iterable<E> iterable) → void
Appends all objects of [iterable] to the end of this list.
remove(Object element) → bool
Removes the first occurence of [value] from this list.
removeWhere(bool test(E element)) → void
Removes all objects from this list that satisfy [test].
retainWhere(bool test(E element)) → void
Removes all objects from this list that fail to satisfy [test].
clear() → void
Removes all objects from this list; the length of the list becomes zero.
removeLast() → E
Pops and returns the last object in this list.
sort([int compare(E a, E b)]) → void
Sorts this list according to the order specified by the [compare] function.
shuffle([Random random]) → void
Shuffles the elements of this list randomly.
asMap() → Map<int,E>
Returns an unmodifiable [Map] view of this.
sublist(int start, [int end]) → List<E>
Returns a new list containing the objects from [start] inclusive to [end] exclusive.
getRange(int start, int end) → Iterable<E>
Returns an [Iterable] that iterates over the objects in the range [start] inclusive to [end] exclusive.
removeRange(int start, int end) → void
Removes the objects in the range [start] inclusive to [end] exclusive.
fillRange(int start, int end, [E fill]) → void
Sets the objects in the range [start] inclusive to [end] exclusive to the given [fillValue].
setRange(int start, int end, Iterable<E> iterable, [int skipCount = 0]) → void
Copies the objects of [iterable], skipping [skipCount] objects first, into the range [start], inclusive, to [end], exclusive, of the list.
replaceRange(int start, int end, Iterable<E> newContents) → void
Removes the objects in the range [start] inclusive to [end] exclusive and inserts the contents of [replacement] in its place.
indexOf(Object element, [int startIndex = 0]) → int
Returns the first index of [element] in this list.
lastIndexOf(Object element, [int startIndex]) → int
Returns the last index in the list a of the given element, starting the search at index startIndex to 0. Returns -1 if element is not found.
insert(int index, E element) → void
Inserts the object at position [index] in this list.
removeAt(int index) → E
Removes the object at position [index] from this list.
insertAll(int index, Iterable<E> iterable) → void
Inserts all objects of [iterable] at position [index] in this list.
setAll(int index, Iterable<E> iterable) → void
Overwrites objects of this with the objects of [iterable], starting at position [index] in this list.
toString() → String
Returns a string representation of this object.