Float64List class Null safety
A fixed-length list of IEEE 754 double-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.
- Implemented types
- Implementers
- Available Extensions
Constructors
- Float64List(int length)
-
Creates a Float64List of the specified length (in elements), all of
whose elements are initially zero. [...]
factory
-
Float64List.fromList(List<
double> elements) -
Creates a Float64List with the same length as the
elementslist and copies over the elements. [...]factory - Float64List.sublistView(TypedData data, [int start = 0, int? end])
-
Creates a Float64List view on a range of elements of
data. [...]factory - Float64List.view(ByteBuffer buffer, [int offsetInBytes = 0, int? length])
-
Creates a Float64List 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
-
Whether this collection has no elements. [...]
read-only, inherited
- isNotEmpty → bool
-
Whether this collection has at least one element. [...]
read-only, inherited
-
iterator
→ Iterator<
double> -
Returns a new
Iteratorthat allows iterating the elements of thisIterable. [...]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
valueto the end of this list, extending the length by one. [...]inherited -
addAll(
Iterable< double> iterable) → void -
Appends all objects of
iterableto 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
Rinstances. [...]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 -
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 action(double element)) → void -
Invokes
actionon 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
elementin 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
elementat positionindexin this list. [...]inherited -
insertAll(
int index, Iterable< double> iterable) → void -
Inserts all objects of
iterableat positionindexin 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
elementin 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 toElement(double e)) → Iterable< T> -
The current elements of this iterable modified by
toElement. [...]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
valuefrom this list. [...]inherited -
removeAt(
int index) → double -
Removes the object at position
indexfrom 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
iterableinto 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
countelements. [...]inherited -
skipWhile(
bool test(double value)) → Iterable< double> -
Returns an
Iterablethat skips leading elements whiletestis satisfied. [...]inherited -
sort(
[int compare(double a, double b)?]) → void -
Sorts this list according to the order specified by the
comparefunction. [...]inherited -
sublist(
int start, [int? end]) → Float64List -
Returns a new list containing the elements between
startandend. [...]override -
take(
int count) → Iterable< double> -
Returns a lazy iterable of the
countfirst 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
indexin the list. [...]inherited -
operator []=(
int index, double value) → void -
Sets the value at the given
indexin the list tovalue. [...]inherited
Constants
- bytesPerElement → const int
-
8