Abstract implementation of a list.

ListBase can be used as a base class for implementing the List interface.

All operations are defined in terms of length, operator[], operator[]= and length=, which need to be implemented.

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, preferably, use DelegatingList from "package:collection/wrappers.dart" instead.

Mixes-in
Implemented by

Static Methods

listToString(List list) → String

Convert a List to a string as [each, element, as, string].

Constructors

ListBase()

Properties

first → E

read-only, inherited
hashCode → int

Get a hash code for this object.

read-only, inherited
isEmpty → bool

read-only, inherited
isNotEmpty → bool

read-only, inherited
iterator → Iterator<E>

read-only, inherited
last → E

read-only, inherited
length → int

Returns the number of objects in this list.

read / write, inherited
reversed → Iterable<E>

read-only, inherited
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited
single → E

read-only, inherited

Operators

operator ==(other) → bool

The equality operator.

inherited
operator [](int index) → E

Returns the object at the given index in the list or throws a RangeError if index is out of bounds.

inherited
operator []=(int index, E value) → void

Sets the value at the given index in the list to value or throws a RangeError if index is out of bounds.

inherited

Methods

add(E element) → void

Adds value to the end of this list, extending the length by one.

inherited
addAll(Iterable<E> iterable) → void

Appends all objects of iterable to the end of this list.

inherited
any(bool test(E element)) → bool

Checks whether any element of this iterable satisfies test.

inherited
asMap() → Map<int, E>

Returns an unmodifiable Map view of this.

inherited
clear() → void

Removes all objects from this list; the length of the list becomes zero.

inherited
contains(Object element) → bool

Returns true if 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 fill ]) → void

Sets the objects in the range start inclusive to end exclusive to the given fillValue.

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
forEach(void action(E element)) → void

Applies the function f to each element of this collection in iteration order.

inherited
getRange(int start, int end) → Iterable<E>

Returns an Iterable that iterates over the objects in the range start inclusive to end exclusive.

inherited
indexOf(Object element, [ int startIndex = 0 ]) → int

Returns the first index of element in this list.

inherited
insert(int index, E element) → void

Inserts the object at position index in this list.

inherited
insertAll(int index, Iterable<E> iterable) → void

Inserts all objects of iterable at position index in this list.

inherited
join([String separator = "" ]) → String

Converts each element to a String and concatenates the strings.

inherited
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.

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>

Returns a new lazy Iterable with elements that are created by calling f on each element of this Iterable in iteration order.

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

Removes the first occurrence of value from this list.

inherited
removeAt(int index) → E

Removes the object at position index from this list.

inherited
removeLast() → E

Pops and returns the last object in this list.

inherited
removeRange(int start, int end) → void

Removes the objects in the range start inclusive to end exclusive.

inherited
removeWhere(bool test(E element)) → void

Removes all objects from this list that satisfy test.

inherited
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.

inherited
retainWhere(bool test(E element)) → void

Removes all objects from this list that fail to satisfy test.

inherited
setAll(int index, Iterable<E> iterable) → void

Overwrites objects of this with the objects of iterable, starting at position index in this list.

inherited
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.

inherited
shuffle([Random random ]) → void

Shuffles the elements of this list randomly.

inherited
singleWhere(bool test(E element)) → 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([int compare(E a, E b) ]) → 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 objects from start inclusive to end exclusive.

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

Returns 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