hu.akarnokd.reactive4java.reactive

Class Aggregate.Scan<T>

java.lang.Object

hu.akarnokd.reactive4java.reactive.Aggregate.Scan<T>

Type Parameters:

T - the element type to accumulate

All Implemented Interfaces:

Observable<T>

Enclosing class:

Aggregate

public static final class Aggregate.Scan<T>
extends java.lang.Object
implements Observable<T>

Creates an observable which accumultates the given source and submits each intermediate results to its subscribers. Example:
range(0, 5).accumulate((x, y) -> x + y) produces a sequence of [0, 1, 3, 6, 10];
basically the first event (0) is just relayed and then every pair of values are simply added together and relayed

Constructor Summary

Constructors

Constructor and Description
Scan(Observable<? extends T> source, Func2<? super T,? super T,? extends T> accumulator) Constructor.

Method Summary

Modifier and Type	Method and Description
java.io.Closeable	register(Observer<? super T> observer) Registers an observer for the notification of Ts.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Scan

public Scan(Observable<? extends T> source,
            Func2<? super T,? super T,? extends T> accumulator)

Constructor.

Parameters:

source - the source sequence

accumulator - the accumulator

Method Detail

register

@Nonnull
public java.io.Closeable register(@Nonnull
                                            Observer<? super T> observer)

Description copied from interface: Observable

Registers an observer for the notification of Ts.

Specified by:

register in interface Observable<T>

Parameters:

observer - the observer of Ts or any supertype of it

Returns:

the way of deregister the observer from this provider