StreamMinFuture<T> class

Converts a Stream into a Future that completes with the smallest item emitted by the Stream.

This is similar to finding the min value in a list, but the values are asynchronous.

Example

int min = await new StreamMinFuture(new Stream.fromIterable([1, 2, 3]));

print(min); // prints 1

Example with custom Comparator

Stream<String> stream = new Stream.fromIterable("short", "loooooooong");
Comparator<String> stringLengthComparator = (a, b) => a.length - b.length;
String min = await new StreamMinFuture(stream, stringLengthComparator);

print(min); // prints "short"
Inheritance

Constructors

StreamMinFuture(Stream<T> stream, [ Comparator<T> comparator ])
Constructs a Future which contains only the smallest value emitted by a Stream, optionally using a Comparator to determine that value.

Properties

hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
wrapped → Future<T>
A reference to the wrapped Future.
final, inherited

Methods

asStream() → Stream<T>
Creates a Stream containing the result of this future. [...]
inherited
catchError(Function onError, { bool test(Object error) }) → Future<T>
Handles errors emitted by this Future. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
then<S>(FutureOr<S> onValue(T value), { Function onError }) → Future<S>
Register callbacks to be called when this future completes. [...]
inherited
timeout(Duration timeLimit, { FutureOr<T> onTimeout() }) → Future<T>
Time-out the future computation after timeLimit has passed. [...]
inherited
toString() → String
Returns a string representation of this object.
inherited
whenComplete(void action()) → Future<T>
Registers a function to be called when this future completes. [...]
inherited

Operators

operator ==(dynamic other) → bool
The equality operator.
inherited