Float32List class - dart:typed_data library (original) (raw)
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 implementFloat32List.
Implemented types
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
Available on Float32List, provided by the Float32ListAddress extension
The memory address of the underlying data.
no setter
The byte buffer associated with this object.
no setterinherited
The number of bytes in the representation of each element in this list.
no setterinherited
The first element.
getter/setter pairinherited
The hash code for this object.
no setterinherited
Whether this collection has no elements.
no setterinherited
Whether this collection has at least one element.
no setterinherited
A new Iterator that allows iterating the elements of this Iterable.
no setterinherited
The last element.
getter/setter pairinherited
The number of objects in this list.
getter/setter pairinherited
The length of this view, in bytes.
no setterinherited
The offset of this view into the underlying byte buffer, in bytes.
no setterinherited
An Iterable of the objects in this list in reverse order.
no setterinherited
A representation of the runtime type of the object.
no setterinherited
Checks that this iterable has only one element, and returns that element.
no setterinherited
Available on Float32List, provided by the Float32ListToJSFloat32Array extension
Converts this Float32List to a JSFloat32Array by either casting, unwrapping, or cloning the Float32List.
no setter
Methods
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
An unmodifiable Map view of this list.
inherited
asUnmodifiableView()→ Float32List
A read-only view of this Float32List.
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
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
Removes the first occurrence of value from this list.
inherited
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
Creates 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
Creates a Set containing the same elements as this iterable.
inherited
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
Creates a new lazy Iterable with all elements that have type T.
inherited
Operators
operator +(List<double> other)→ List<double>
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