SparseVector class - serverpod library

Constructors

SparseVector(List<double> value): Creates a SparseVector from a list of doubles with all values.
factory
SparseVector.fromBinary(Uint8List bytes): Creates a SparseVector from its binary representation.
factory
SparseVector.fromMap(Map<int, double> map, int dimensions): Creates a SparseVector from a map of indices to values.
factory

Properties

dimensions → int: The total number of dimensions in the vector.
final
first → double: The first element.
no setterinherited
hashCode → int: The hash code for this object.
no setteroverride
indices → List<int>: The indices of non-zero values in the vector.
final
isEmpty → bool: Whether this collection has no elements.
no setterinherited
isNotEmpty → bool: Whether this collection has at least one element.
no setterinherited
iterator → Iterator<double>: A new Iterator that allows iterating the elements of this Iterable.
no setteroverride
last → double: The last element.
no setterinherited
length → int: The number of elements in this Iterable.
no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
single → double: Checks that this iterable has only one element, and returns that element.
no setterinherited
values → List<double>: The non-zero values in the vector.
final

Methods

any(bool test(double 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
clone() → SparseVector: Available on SparseVector, provided by the CloneSparseVector extension
Creates a deep copy of the SparseVector, mutations to the original will not affect the copy.
contains(Object? element) → bool: Whether the collection contains an element equal to element.
inherited
elementAt(int index) → double: Returns the indexth element.
override
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
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
join([String separator = ""]) → String: Converts each element to a String and concatenates the strings.
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
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 element)) → Iterable<double>: Creates an Iterable that skips leading elements while test is satisfied.
inherited
take(int count) → Iterable<double>: Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(double element)) → Iterable<double>: Creates a lazy iterable of the leading elements satisfying test.
inherited
toBinary() → Uint8List: Converts the sparse vector to its binary representation.
toJson() → String: Available on SparseVector, provided by the SparseVectorJsonExtension extension
Returns a serialized version of the SparseVector as a String.
toList({bool growable = true}) → List<double>: Returns the sparse vector as a dense list of double values.
override
toSet() → Set<double>: 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(double element)) → Iterable<double>: Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<R>: 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) → double: Returns the value at index, or 0.0 if the position is not stored.

Static Methods

fromString(String value) → SparseVector: Creates a SparseVector from a string representation.