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 contains nulls.
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 indexth 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 while test 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 to value.