Uint8List abstract class

A fixed-length list of 8-bit unsigned integers.

For long lists, this implementation can be considerably more space- and time-efficient than the default List implementation.

Integers stored in the list are truncated to their low eight bits, interpreted as an unsigned 8-bit integer with values in the range 0 to 255.

Implements

List<int>
TypedData

Constants

BYTES_PER_ELEMENT → int: 1

Constructors

Uint8List(int length) factory: Creates a Uint8List of the specified length (in elements), all of whose elements are initially zero.
Uint8List.fromList(List<int> elements) factory: Creates a Uint8List with the same length as the elements list and copies over the elements.
Uint8List.view(ByteBuffer buffer, [ int offsetInBytes = 0, int length ]) factory: Creates a Uint8List view of the specified region in buffer.

Properties

buffer → ByteBuffer read-only, inherited: Returns the byte buffer associated with this object.
elementSizeInBytes → int read-only, inherited: Returns the number of bytes in the representation of each element in this list.
first → int read-only, inherited: Returns the first element.
hashCode → int read-only, inherited: The hash code for this object.
isEmpty → bool read-only, inherited: Returns true if there are no elements in this collection.
isNotEmpty → bool read-only, inherited: Returns true if there is at least one element in this collection.
iterator → Iterator<int> read-only, inherited: Returns a new Iterator that allows iterating the elements of this Iterable.
last → int read-only, inherited: Returns the last element.
length → int read / write, inherited: Returns the number of objects in this list.
lengthInBytes → int read-only, inherited: Returns the length of this view, in bytes.
offsetInBytes → int read-only, inherited: Returns the offset in bytes into the underlying byte buffer of this view.
reversed → Iterable<int> read-only, inherited: Returns an Iterable of the objects in this list in reverse order.
runtimeType → Type read-only, inherited: A representation of the runtime type of the object.
single → int read-only, inherited: Checks that this iterable has only one element, and returns that element.

Operators

operator ==(other) → bool inherited: The equality operator.
operator [](int index) → int inherited: Returns the object at the given index in the list or throws a RangeError if index is out of bounds.
operator []=(int index, int 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.

Methods

add(int value) → void inherited: Adds value to the end of this list, extending the length by one.
addAll(Iterable<int> iterable) → void inherited: Appends all objects of iterable to the end of this list.
any(bool f(E element)) → bool inherited: Checks whether any element of this iterable satisfies test.
asMap() → Map<int, int> inherited: Returns an unmodifiable Map view of this.
clear() → void inherited: Removes all objects from this list; the length of the list becomes zero.
contains(Object element) → bool inherited: Returns true if the collection contains an element equal to element.
elementAt(int index) → int inherited: Returns the indexth element.
every(bool f(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.
fillRange(int start, int end, [ int fillValue ]) → void inherited: Sets the objects in the range start inclusive to end exclusive to the given fillValue.
firstWhere(bool test(E element), { int orElse() }) → int 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
forEach(void f(E element)) → void inherited: Applies the function f to each element of this collection in iteration order.
getRange(int start, int end) → Iterable<int> inherited: Returns an Iterable that iterates over the objects in the range start inclusive to end exclusive.
indexOf(int element, [ int start = 0 ]) → int inherited: Returns the first index of element in this list.
insert(int index, int element) → void inherited: Inserts the object at position index in this list.
insertAll(int index, Iterable<int> iterable) → void inherited: Inserts all objects of iterable at position index in this list.
join([String separator = "" ]) → String inherited: Converts each element to a String and concatenates the strings.
lastIndexOf(int element, [ int start ]) → int inherited: Returns the last index of element in this list.
lastWhere(bool test(E element), { int orElse() }) → int inherited: Returns the last element that satisfies the given predicate test.
map<T>(T f(E e)) → 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(int combine(E value, E element)) → int inherited: Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
remove(Object value) → bool inherited: Removes the first occurrence of value from this list.
removeAt(int index) → int inherited: Removes the object at position index from this list.
removeLast() → int inherited: Pops and returns the last object in this list.
removeRange(int start, int end) → void inherited: Removes the objects in the range start inclusive to end exclusive.
removeWhere(bool test(E element)) → void inherited: Removes all objects from this list that satisfy test.
replaceRange(int start, int end, Iterable<int> replacement) → void inherited: Removes the objects in the range start inclusive to end exclusive and inserts the contents of replacement in its place.
retainWhere(bool test(E element)) → void inherited: Removes all objects from this list that fail to satisfy test.
setAll(int index, Iterable<int> iterable) → void inherited: Overwrites objects of this with the objects of iterable, starting at position index in this list.
setRange(int start, int end, Iterable<int> iterable, [ int skipCount = 0 ]) → void inherited: Copies the objects of iterable, skipping skipCount objects first, into the range start, inclusive, to end, exclusive, of the list.
shuffle([Random random ]) → void inherited: Shuffles the elements of this list randomly.
singleWhere(bool test(E element)) → int inherited: Returns the single element that satisfies test.
skip(int count) → Iterable<int> inherited: Returns an Iterable that provides all but the first count elements.
skipWhile(bool test(E value)) → Iterable<int> inherited: Returns an Iterable that skips leading elements while test is satisfied.
sort([int compare(E a, E b) ]) → void inherited: Sorts this list according to the order specified by the compare function.
sublist(int start, [ int end ]) → List<int> inherited: Returns a new list containing the objects from start inclusive to end exclusive.
take(int count) → Iterable<int> inherited: Returns a lazy iterable of the count first elements of this iterable.
takeWhile(bool test(E value)) → Iterable<int> inherited: Returns a lazy iterable of the leading elements satisfying test.
toList({bool growable: true }) → List<int> inherited: Creates a List containing the elements of this Iterable.
toSet() → Set<int> inherited: Creates a Set containing the same elements as this iterable.
toString() → String inherited: Returns a string representation of this object.
where(bool test(E element)) → Iterable<int> 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-typed_data/Uint8List-class.html