ListQueue class

List based Queue.

Keeps a cyclic buffer of elements, and grows to a larger buffer when it fills up. This guarantees constant time peek and remove operations, and amortized constant time add operations.

The structure is efficient for any queue or stack usage.

Inheritance

Object
Iterable<T>
EfficientLengthIterable<E>
ListIterable<E>
ListQueue

Implements

Queue<E>

Constructors

ListQueue([int initialCapacity ]): Create an empty queue.
ListQueue.from(Iterable elements) factory: Create a ListQueue containing all elements.

Properties

first → E read-only
isEmpty → bool read-only
iterator → Iterator<E> read-only
last → E read-only
length → int read-only
single → E read-only
hashCode → int read-only, inherited: The hash code for this object.
isNotEmpty → bool read-only, inherited: Returns true if there is at least one element in this collection.
runtimeType → Type read-only, inherited: A representation of the runtime type of the object.

Operators

operator ==(other) → bool inherited: The equality operator.

Methods

add(E value) → void: Adds value at the end of the queue.
addAll(Iterable<E> elements) → void: Adds all elements of iterable at the end of the queue. The length of the queue is extended by the length of iterable.
addFirst(E value) → void: Adds value at the beginning of the queue.
addLast(E value) → void: Adds value at the end of the queue.
clear() → void: Removes all elements in the queue. The size of the queue becomes zero.
elementAt(int index) → E: Returns the indexth element.
forEach(void action(E element)) → void: Applies the function f to each element of this collection in iteration order.
remove(Object value) → bool: Remove a single instance of value from the queue.
removeFirst() → E: Removes and returns the first element of this queue.
removeLast() → E: Removes and returns the last element of the queue.
removeWhere(bool test(E element)) → void: Remove all elements matched by test.
retainWhere(bool test(E element)) → void: Remove all elements not matched by test.
toList({bool growable: true }) → List<E>: Creates a List containing the elements of this Iterable.
toString() → String: Returns a string representation of this object.
any(bool test(E element)) → bool inherited: Checks whether any element of this iterable satisfies test.
contains(Object element) → bool inherited: Returns true if the collection contains an element equal to element.
every(bool test(E element)) → bool inherited: Checks whether every element of this iterable satisfies test.
expand<T>(Iterable<T> f(E element)) → Iterable<T> inherited: Expands each element of this Iterable into zero or more elements.
firstWhere(bool test(E element), { E orElse() }) → E inherited: Returns the first element that satisfies the given predicate test.
fold<T>(T initialValue, T combine(T previousValue, E element)) → T inherited: Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
join([String separator = "" ]) → String inherited: Converts each element to a String and concatenates the strings.
lastWhere(bool test(E element), { E orElse() }) → E inherited: Returns the last element that satisfies the given predicate test.
map<T>(T f(E element)) → Iterable<T> inherited: Returns a new lazy Iterable with elements that are created by calling f on each element of this Iterable in iteration order.
noSuchMethod(Invocation invocation) → dynamic inherited: Invoked when a non-existent method or property is accessed.
reduce(E combine(value, E element)) → E inherited: Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
singleWhere(bool test(E element)) → E inherited: Returns the single element that satisfies test.
skip(int count) → Iterable<E> inherited: Returns an Iterable that provides all but the first count elements.
skipWhile(bool test(E element)) → Iterable<E> inherited: Returns an Iterable that skips leading elements while test is satisfied.
take(int count) → Iterable<E> inherited: Returns a lazy iterable of the count first elements of this iterable.
takeWhile(bool test(E element)) → Iterable<E> inherited: Returns a lazy iterable of the leading elements satisfying test.
toSet() → Set<E> inherited: Creates a Set containing the same elements as this iterable.
where(bool test(E element)) → Iterable<E> inherited: Returns a new lazy Iterable with all elements that satisfy the predicate test.

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-collection/ListQueue-class.html