StreamSupport class

Low-level utility methods for creating and manipulating streams.

This class is primarily intended for library writers presenting stream views of data structures; most static stream methods intended for end users are in the various stream classes.

Example Usage

// Create a stream from an iterable
final stream = StreamSupport.stream(someIterable);

// Create a parallel stream
final parallelStream = StreamSupport.stream(someIterable, parallel: true);

// Create streams from various sources
final intStream = StreamSupport.intStream([1, 2, 3, 4, 5]);
final doubleStream = StreamSupport.doubleStream([1.1, 2.2, 3.3]);

Properties

hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Methods

builder<T>() → StreamBuilder<T>: Returns a builder for a GenericStream.
concat<T>(GenericStream<T> a, GenericStream<T> b) → GenericStream<T>: Creates a lazily concatenated stream whose elements are all the elements of the first stream followed by all the elements of the second stream.
doubleStream(Iterable<double> source, {bool parallel = false}) → DoubleStream: Creates a new sequential or parallel DoubleStream from an Iterable of doubles.
empty<T>() → GenericStream<T>: Creates an empty GenericStream.
emptyDoubleStream() → DoubleStream: Creates an empty DoubleStream.
emptyIntStream() → IntStream: Creates an empty IntStream.
generate<T>(T supplier()) → GenericStream<T>: Creates an infinite sequential unordered stream where each element is generated by the provided supplier function.
intStream(Iterable<int> source, {bool parallel = false}) → IntStream: Creates a new sequential or parallel IntStream from an Iterable of integers.
iterate<T>(T seed, T f(T)) → GenericStream<T>: Creates an infinite sequential ordered stream produced by iterative application of a function to an initial element.
of<T>(T first, [T? second, T? third, T? fourth, T? fifth]) → GenericStream<T>: Creates a stream whose elements are the specified values.
ofAll<T>(List<T> values) → GenericStream<T>: Creates a stream from a variable number of arguments.
ofSingle<T>(T value) → GenericStream<T>: Creates a GenericStream containing a single element.
stream<T>(Iterable<T> source, {bool parallel = false}) → GenericStream<T>: Creates a new sequential or parallel GenericStream from an Iterable.