dart:typed_data
Uint8ClampedList 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 clamped to an unsigned eight bit value. That is, all values below zero are stored as zero and all values above 255 are stored as 255.
- Implemented types
-
- Implementers
- Available Extensions
Constructors
- Uint8ClampedList(int length)
factory
- Creates a Uint8ClampedList of the specified length (in elements), all of whose elements are initially zero.
- Uint8ClampedList.fromList(List<int> elements)
factory
- Creates a Uint8ClampedList of the same size as the
elements list and copies over the values clamping when needed. - Uint8ClampedList.sublistView(TypedData data, [int start = 0, int? end])
factory
- Creates a Uint8ClampedList view on a range of elements of
data. - Uint8ClampedList.view(ByteBuffer buffer, [int offsetInBytes = 0, int? length])
factory
- Creates a Uint8ClampedList view of the specified region in the specified byte
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 / write, inherited
- Returns the first element.
- hashCode → int
read-only, inherited
- The hash code for this object.
- isEmpty → bool
read-only, inherited
- Whether this collection has no elements.
- isNotEmpty → bool
read-only, inherited
- Whether this collection has at least one element.
- iterator → Iterator<int>
read-only, inherited
- Returns a new
Iterator that allows iterating the elements of this Iterable. - last ↔ int
read / write, inherited
- Returns the last element.
- length ↔ int
read / write, inherited
- 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
- 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.
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 test(int element)) → bool
inherited
- Checks whether any element of this iterable satisfies
test. - asMap() → Map<int, int>
inherited
- An unmodifiable Map view of this list.
- cast<R>() → List<R>
inherited
- Returns a view of this list as a list of
R instances. - clear() → void
inherited
- Removes all objects from this list; the length of the list becomes zero.
- contains(Object? element) → bool
inherited
- Whether the collection contains an element equal to
element. - elementAt(int index) → int
inherited
- Returns the
indexth element. - every(bool test(int element)) → bool
inherited
- Checks whether every element of this iterable satisfies
test. - expand<T>(Iterable<T> toElements(int element)) → Iterable<T>
inherited
- Expands each element of this Iterable into zero or more elements.
- fillRange(int start, int end, [int? fillValue]) → void
inherited
- Overwrites a range of elements with
fillValue. - firstWhere(bool test(int element), {int orElse()?}) → int
inherited
- Returns the first element that satisfies the given predicate
test. - fold<T>(T initialValue, T combine(T previousValue, int element)) → T
inherited
- Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
- followedBy(Iterable<int> other) → Iterable<int>
inherited
- Returns the lazy concatenation of this iterable and
other. - forEach(void action(int element)) → void
inherited
- Invokes
action on each element of this iterable in iteration order. - getRange(int start, int end) → Iterable<int>
inherited
- Creates an Iterable that iterates over a range of elements.
- indexOf(int element, [int start = 0]) → int
inherited
- The first index of
element in this list. - indexWhere(bool test(int element), [int start = 0]) → int
inherited
- The first index in the list that satisfies the provided
test. - insert(int index, int element) → void
inherited
- Inserts
element 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
- The last index of
element in this list. - lastIndexWhere(bool test(int element), [int? start]) → int
inherited
- The last index in the list that satisfies the provided
test. - lastWhere(bool test(int element), {int orElse()?}) → int
inherited
- Returns the last element that satisfies the given predicate
test. - map<T>(T toElement(int e)) → Iterable<T>
inherited
- The current elements of this iterable modified by
toElement. - noSuchMethod(Invocation invocation) → dynamic
inherited
- Invoked when a non-existent method or property is accessed.
- reduce(int combine(int value, int 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
- Removes and returns the last object in this list.
- removeRange(int start, int end) → void
inherited
- Removes a range of elements from the list.
- removeWhere(bool test(int element)) → void
inherited
- Removes all objects from this list that satisfy
test. - replaceRange(int start, int end, Iterable<int> replacements) → void
inherited
- Replaces a range of elements with the elements of
replacements. - retainWhere(bool test(int element)) → void
inherited
- Removes all objects from this list that fail to satisfy
test. - setAll(int index, Iterable<int> iterable) → void
inherited
- Overwrites elements with the objects of
iterable. - setRange(int start, int end, Iterable<int> iterable, [int skipCount = 0]) → void
inherited
- Writes some elements of
iterable into a range of this list. - shuffle([Random? random]) → void
inherited
- Shuffles the elements of this list randomly.
- singleWhere(bool test(int element), {int orElse()?}) → 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(int value)) → Iterable<int>
inherited
- Returns an
Iterable that skips leading elements while test is satisfied. - sort([int compare(int a, int b)?]) → void
inherited
- Sorts this list according to the order specified by the
compare function. - sublist(int start, [int? end]) → Uint8ClampedList
override
- Returns a new list containing the elements between
start and end. - take(int count) → Iterable<int>
inherited
- Returns a lazy iterable of the
count first elements of this iterable. - takeWhile(bool test(int 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
- A string representation of this object.
- where(bool test(int element)) → Iterable<int>
inherited
- Returns a new lazy Iterable with all elements that satisfy the predicate
test. - whereType<T>() → Iterable<T>
inherited
- Returns a new lazy Iterable with all elements that have type
T.
Operators
- operator +(List<int> other) → List<int>
inherited
- Returns the concatenation of this list and
other. - operator ==(Object other) → bool
inherited
- The equality operator.
- operator [](int index) → int
inherited
- The object at the given
index in the list. - operator []=(int index, int value) → void
inherited
- Sets the value at the given
index in the list to value.
Constants
- bytesPerElement → const int
-
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