Float32List class abstract final

A fixed-length list of IEEE 754 single-precision binary floating-point numbers that is viewable as a TypedData.

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

Double values stored in the list are converted to the nearest single-precision value. Values read are converted to a double value with the same value.

It is a compile-time error for a class to attempt to extend or implement Float32List.

Implemented types
Implementers
Available Extensions

Constructors

Float32List(int length)
Creates a Float32List of the specified length (in elements), all of whose elements are initially zero.
factory
Float32List.fromList(List<double> elements)
Creates a Float32List with the same length as the elements list and copies over the elements.
factory
Float32List.sublistView(TypedData data, [int start = 0, int? end])
Creates an Float32List view on a range of elements of data.
factory
Float32List.view(ByteBuffer buffer, [int offsetInBytes = 0, int? length])
Creates a Float32List view of the specified region in buffer.
factory

Properties

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

Methods

add(double value) → void
Adds value to the end of this list, extending the length by one.
inherited
addAll(Iterable<double> iterable) → void
Appends all objects of iterable to the end of this list.
inherited
any(bool test(double element)) → bool
Checks whether any element of this iterable satisfies test.
inherited
asMap() → Map<int, double>
An unmodifiable Map view of this list.
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
Whether the collection contains an element equal to element.
inherited
elementAt(int index) → double
Returns the indexth element.
inherited
every(bool test(double element)) → bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> toElements(double element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
fillRange(int start, int end, [double? fillValue]) → void
Overwrites a range of elements with fillValue.
inherited
firstWhere(bool test(double element), {double orElse()?}) → double
The first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, double element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<double> other) → Iterable<double>
Creates the lazy concatenation of this iterable and other.
inherited
forEach(void action(double element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
getRange(int start, int end) → Iterable<double>
Creates an Iterable that iterates over a range of elements.
inherited
indexOf(double element, [int start = 0]) → int
The first index of element in this list.
inherited
indexWhere(bool test(double element), [int start = 0]) → int
The first index in the list that satisfies the provided test.
inherited
insert(int index, double element) → void
Inserts element at position index in this list.
inherited
insertAll(int index, Iterable<double> 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(double element, [int? start]) → int
The last index of element in this list.
inherited
lastIndexWhere(bool test(double element), [int? start]) → int
The last index in the list that satisfies the provided test.
inherited
lastWhere(bool test(double element), {double orElse()?}) → double
The last element that satisfies the given predicate test.
inherited
map<T>(T toElement(double e)) → Iterable<T>
The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reduce(double combine(double value, double element)) → double
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) → double
Removes the object at position index from this list.
inherited
removeLast() → double
Removes and returns the last object in this list.
inherited
removeRange(int start, int end) → void
Removes a range of elements from the list.
inherited
removeWhere(bool test(double element)) → void
Removes all objects from this list that satisfy test.
inherited
replaceRange(int start, int end, Iterable<double> replacements) → void
Replaces a range of elements with the elements of replacements.
inherited
retainWhere(bool test(double element)) → void
Removes all objects from this list that fail to satisfy test.
inherited
setAll(int index, Iterable<double> iterable) → void
Overwrites elements with the objects of iterable.
inherited
setRange(int start, int end, Iterable<double> iterable, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
inherited
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
inherited
singleWhere(bool test(double element), {double orElse()?}) → double
The single element that satisfies test.
inherited
skip(int count) → Iterable<double>
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(double value)) → Iterable<double>
Creates an Iterable that skips leading elements while test is satisfied.
inherited
sort([int compare(double a, double b)?]) → void
Sorts this list according to the order specified by the compare function.
inherited
sublist(int start, [int? end]) → Float32List
Returns a new list containing the elements between start and end.
override
take(int count) → Iterable<double>
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(double value)) → Iterable<double>
Creates a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) → List<double>
Creates a List containing the elements of this Iterable.
inherited
toSet() → Set<double>
Creates a Set containing the same elements as this iterable.
inherited
toString() → String
A string representation of this object.
inherited
where(bool test(double element)) → Iterable<double>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited

Operators

operator +(List<double> other) → List<double>
Returns the concatenation of this list and other.
inherited
operator ==(Object other) → bool
The equality operator.
inherited
operator [](int index) → double
The object at the given index in the list.
inherited
operator []=(int index, double value) → void
Sets the value at the given index in the list to value.
inherited

Constants

bytesPerElement → const int
4