hu.akarnokd.reactive4java.reactive

Class Aggregate.ScanSeeded<U,T>

java.lang.Object

hu.akarnokd.reactive4java.reactive.Aggregate.ScanSeeded<U,T>

Type Parameters:

T - the element type to accumulate

U - the accumulation type

All Implemented Interfaces:

Observable<U>

Enclosing class:

Aggregate

public static final class Aggregate.ScanSeeded<U,T>
extends java.lang.Object
implements Observable<U>

Creates an observable which accumultates the given source and submits each intermediate results to its subscribers. Example:
range(0, 5).accumulate(1, (x, y) => x + y) produces a sequence of [1, 2, 4, 7, 11];
basically the accumulation starts from zero and the first value (0) that comes in is simply added

Constructor Summary

Constructors

Constructor and Description
ScanSeeded(Observable<? extends T> source, U seed, Func2<? super U,? super T,? extends U> accumulator) Construction.

Method Summary

Modifier and Type	Method and Description
java.io.Closeable	register(Observer<? super U> 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

ScanSeeded

public ScanSeeded(Observable<? extends T> source,
                  U seed,
                  Func2<? super U,? super T,? extends U> accumulator)

Construction.

Parameters:

source - the source sequence

seed - the initinal accumulator seed

accumulator - the accumulator function

Method Detail

register

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

Description copied from interface: Observable

Registers an observer for the notification of Ts.

Specified by:

register in interface Observable<U>

Parameters:

observer - the observer of Ts or any supertype of it

Returns:

the way of deregister the observer from this provider