Uint8List 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
Implemented by

Constructors

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

Properties

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

Methods

add(int value) → void
Adds value to the end of this list, extending the length by one. [...]
inherited
addAll(Iterable<int> 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, int>
Returns an unmodifiable Map view of this. [...]
inherited
cast<R>() List<R>
Returns a view of this list as a list of R instances. [...]
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) int
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, [ int fillValue ]) → void
Sets the objects in the range start inclusive to end exclusive to the given fillValue. [...]
inherited
firstWhere(bool test(E element), { int orElse() }) int
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
followedBy(Iterable<int> other) Iterable<int>
Returns the lazy concatentation of this iterable and other. [...]
inherited
forEach(void f(E element)) → void
Applies the function f to each element of this collection in iteration order.
inherited
getRange(int start, int end) Iterable<int>
Returns an Iterable that iterates over the objects in the range start inclusive to end exclusive. [...]
inherited
indexOf(int element, [ int start = 0 ]) int
Returns the first index of element in this list. [...]
inherited
indexWhere(bool test(E element), [ int start = 0 ]) int
Returns the first index in the list that satisfies the provided test. [...]
inherited
insert(int index, int element) → void
Inserts the object at position index in this list. [...]
inherited
insertAll(int index, Iterable<int> 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(int element, [ int start ]) int
Returns the last index of element in this list. [...]
inherited
lastIndexWhere(bool test(E element), [ int start ]) int
Returns the last index in the list that satisfies the provided test. [...]
inherited
lastWhere(bool test(E element), { int orElse() }) int
Returns the last element that satisfies the given predicate test. [...]
inherited
map<T>(T f(E e)) 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. [...]
@pragma('vm:entry-point'), inherited
reduce(int combine(E value, E element)) int
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function. [...]
inherited
remove(Object value) bool
Removes the first occurrence of value from this list. [...]
inherited
removeAt(int index) int
Removes the object at position index from this list. [...]
inherited
removeLast() int
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<int> replacement) → 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<int> 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<int> 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), { int orElse() }) int
Returns the single element that satisfies test. [...]
inherited
skip(int count) Iterable<int>
Returns an Iterable that provides all but the first count elements. [...]
inherited
skipWhile(bool test(E value)) Iterable<int>
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<int>
Returns a new list containing the objects from start inclusive to end exclusive. [...]
inherited
take(int count) Iterable<int>
Returns a lazy iterable of the count first elements of this iterable. [...]
inherited
takeWhile(bool test(E value)) Iterable<int>
Returns a lazy iterable of the leading elements satisfying test. [...]
inherited
toList({bool growable: true }) List<int>
Creates a List containing the elements of this Iterable. [...]
inherited
toSet() Set<int>
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<int>
Returns a new lazy Iterable with all elements that satisfy the predicate test. [...]
inherited
whereType<T>() Iterable<T>
Returns a new lazy Iterable with all elements that have type T. [...]
inherited

Operators

operator +(List<int> other) List<int>
Returns a concatenation of this list and other. [...]
operator ==(dynamic other) bool
The equality operator. [...]
inherited
operator [](int index) int
Returns the object at the given index in the list or throws a RangeError if index is out of bounds.
inherited
operator []=(int index, int 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

Constants

bytesPerElement → const int
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