NdArray class
A multi-dimensional array.
- Inheritance
- Available extensions
Constructors
- NdArray(int numDimensions)
-
Creates an array with
numDimensions
dimensions. - NdArray.fromList(List list)
-
Creates an array from
list
.factory
Properties
- data ↔ List
-
The data in the array.
getter/setter pair
- first → dynamic
-
Returns the first element in the last dimension.
no setteroverride
- hashCode → int
-
The hash code for this object.
no setteroverride
- isEmpty → bool
-
Returns
true
if the last dimension is empty or if it only containsnull
s.no setteroverride - isNotEmpty → bool
-
Returns
true
if the last dimension contains at least one non-null
element.no setteroverride - iterator → Iterator
-
Returns an iterator that iterates through the last dimension.
no setteroverride
- last → dynamic
-
Returns the last element in the last dimension.
no setteroverride
- length → int
-
Returns the number of elements in the last dimension.
no setteroverride
- numDimensions → int
-
The number of dimensions in the array.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
shape
→ List<
int> -
The shape of the array.
no setter
- single → dynamic
-
Returns the only element in the last dimension.
no setteroverride
Methods
-
any(
bool test(dynamic element)) → bool -
Checks whether any element of this iterable satisfies
test
.inherited -
cast<
R> () → Iterable< R> -
A view of this iterable as an iterable of
R
instances.inherited -
contains(
Object? element) → bool -
Whether the collection contains an element equal to
element
.inherited -
copy(
) → NdArray - Returns a copy of this array.
-
elementAt(
int index) → dynamic -
Returns the
index
th element.inherited -
every(
bool test(dynamic element)) → bool -
Checks whether every element of this iterable satisfies
test
.inherited -
expand<
T> (Iterable< T> toElements(dynamic element)) → Iterable<T> -
Expands each element of this Iterable into zero or more elements.
inherited
-
extractDimension(
int dimension) → List< NdArray> -
Returns a list of each chunk at the given
dimension
. -
firstWhere(
bool test(dynamic element), {dynamic orElse()?}) → dynamic -
The first element that satisfies the given predicate
test
.inherited -
fold<
T> (T initialValue, T combine(T previousValue, dynamic element)) → T -
Reduces a collection to a single value by iteratively combining each
element of the collection with an existing value
inherited
-
followedBy(
Iterable other) → Iterable -
Creates the lazy concatenation of this iterable and
other
.inherited -
forEach(
void action(dynamic element)) → void -
Invokes
action
on each element of this iterable in iteration order.inherited -
join(
[String separator = ""]) → String -
Converts each element to a String and concatenates the strings.
inherited
-
lastWhere(
bool test(dynamic element), {dynamic orElse()?}) → dynamic -
The last element that satisfies the given predicate
test
.inherited -
map<
T> (T toElement(dynamic 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(
dynamic combine(dynamic value, dynamic element)) → dynamic -
Reduces a collection to a single value by iteratively combining elements
of the collection using the provided function.
inherited
-
reshape(
List< int> shape) → void -
Reshapes the array to
shape
. -
singleWhere(
bool test(dynamic element), {dynamic orElse()?}) → dynamic -
The single element that satisfies
test
.inherited -
skip(
int count) → Iterable -
Creates an Iterable that provides all but the first
count
elements.inherited -
skipWhile(
bool test(dynamic value)) → Iterable -
Creates an
Iterable
that skips leading elements whiletest
is satisfied.inherited -
take(
int count) → Iterable -
Creates a lazy iterable of the
count
first elements of this iterable.inherited -
takeWhile(
bool test(dynamic value)) → Iterable -
Creates a lazy iterable of the leading elements satisfying
test
.inherited -
toList(
{bool growable = true}) → List -
Creates a List containing the elements of this Iterable.
inherited
-
toSet(
) → Set -
Creates a Set containing the same elements as this iterable.
inherited
-
toString(
) → String -
Returns a string representation of (some of) the elements of
this
.override -
where(
bool test(dynamic element)) → Iterable -
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 ==(
Object other) → bool -
The equality operator.
override
-
operator [](
int index) → dynamic -
Returns the value at
index
. -
operator []=(
int index, dynamic value) → void -
Sets the value at
index
tovalue
.