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

Constants

BYTES_PER_ELEMENTint
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

bufferByteBuffer
read-only, inherited

Returns the byte buffer associated with this object.

elementSizeInBytesint
read-only, inherited

Returns the number of bytes in the representation of each element in this list.

firstint
read-only, inherited

Returns the first element.

hashCodeint
read-only, inherited

The hash code for this object.

isEmptybool
read-only, inherited

Returns true if there are no elements in this collection.

isNotEmptybool
read-only, inherited

Returns true if there is at least one element in this collection.

iteratorIterator<int>
read-only, inherited

Returns a new Iterator that allows iterating the elements of this Iterable.

lastint
read-only, inherited

Returns the last element.

lengthint
read / write, inherited

Returns the number of objects in this list.

lengthInBytesint
read-only, inherited

Returns the length of this view, in bytes.

offsetInBytesint
read-only, inherited

Returns the offset in bytes into the underlying byte buffer of this view.

reversedIterable<int>
read-only, inherited

Returns an Iterable of the objects in this list in reverse order.

runtimeTypeType
read-only, inherited

A representation of the runtime type of the object.

singleint
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