Float32List class Null safety

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.

Implemented types
Implementers

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-only, inherited
elementSizeInBytes → int
Returns the number of bytes in the representation of each element in this list.
read-only, inherited
first ↔ double
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<double>
Returns a new Iterator that allows iterating the elements of this Iterable. [...]
read-only, inherited
last ↔ double
Returns the last element. [...]
read / write, inherited
length ↔ int
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<double>
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 → double
Checks that this iterable has only one element, and returns that element. [...]
read-only, inherited

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> f(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
Returns 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>
Returns the lazy concatenation of this iterable and other. [...]
inherited
forEach(void f(double element)) → void
Applies the function f to each element of this collection 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
Returns the last element that satisfies the given predicate test. [...]
inherited
map<T>(T f(double 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. [...]
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
Returns the single element that satisfies test. [...]
inherited
skip(int count) → Iterable<double>
Returns an Iterable that provides all but the first count elements. [...]
inherited
skipWhile(bool test(double value)) → Iterable<double>
Returns 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>
Returns a lazy iterable of the count first elements of this iterable. [...]
inherited
takeWhile(bool test(double value)) → Iterable<double>
Returns 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>
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<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