Rx立即反弹 [英] Immediate debounce in Rx
问题描述
我正在寻找操作员来去抖动
一系列事件,我们说用户的点击。输入和输出应如下所示:
interval:-> <--> <-
in:1--2--3 ------- 4--5--5--6-7-8 --------
出:1 ------------- 4 ---------------------
这个想法就像下划线的反跳,并在上使用
立即
选项c> ,可在原始文章
编辑:根据说明,RxJava没有此类流的运算符,但可以由一组非平凡的其他运算符组成: / p>
import java.util.concurrent.TimeUnit;
导入rx。
公共类DebounceFirst {
public static void main(String [] args){
Observable.just(0,100,200,1500,1600,1800 ,2000,10000)
.flatMap(v-> Observable.timer(v,TimeUnit.MILLISECONDS).map(w-> v))
.doOnNext(v-> System.out .println( T = + v))
.compose(debounceFirst(500,TimeUnit.MILLISECONDS))
.toBlocking()
.subscribe(v-> System.out。 println(防反跳: + v));
}
静态< T>可观察的变压器T,T debounceFirst(长时间超时,TimeUnit单位){
return f->
f.publish(g->
g.take(1)
.concatWith(
g.switchMap(u-> Observable.timer(timeout,unit)。 map(w-> u))
.take(1)
.ignoreElements()
)
.repeatWhen(h-> h.takeUntil(g.ignoreElements( )))
);
}
}
I am looking an operator to debounce
a series of event, let us say user's click. The input and output should be like this:
interval : -> <- -> <-
in : 1--2--3-------4--5--5--6-7-8--------
out : 1-------------4---------------------
The idea is like underscore's debounce with immediate
option on
http://underscorejs.org/#debounce. The operator can be presented/implemented in any language that supports Reactive Extensions
Edit: Clarify the interval, let say 5 seconds (5 spaces between two arrows) : -> <-
Edit2: A more understandable version: I have a user, he clicks repeatedly a button (1, 2, 3); I want to catch the first click
(1) and ignore the rest. After a while, he is tired and rest for 7 seconds (which is longer than the 5 seconds interval between two arrows) and continue clicking the button again (4, 5, 6, 7, 8) I want to catch the first click
(4) and ignore the rest.
If he clicks after the forth arrow, I want to catch that click, too.
Edit3: Here is an image which can be found at the original article
Edit: Based on the clarifications, RxJava doesn't have an operator for this type of flow but it can be composed from a non-trivial set of other operators:
import java.util.concurrent.TimeUnit;
import rx.Observable;
public class DebounceFirst {
public static void main(String[] args) {
Observable.just(0, 100, 200, 1500, 1600, 1800, 2000, 10000)
.flatMap(v -> Observable.timer(v, TimeUnit.MILLISECONDS).map(w -> v))
.doOnNext(v -> System.out.println("T=" + v))
.compose(debounceFirst(500, TimeUnit.MILLISECONDS))
.toBlocking()
.subscribe(v -> System.out.println("Debounced: " + v));
}
static <T> Observable.Transformer<T, T> debounceFirst(long timeout, TimeUnit unit) {
return f ->
f.publish(g ->
g.take(1)
.concatWith(
g.switchMap(u -> Observable.timer(timeout, unit).map(w -> u))
.take(1)
.ignoreElements()
)
.repeatWhen(h -> h.takeUntil(g.ignoreElements()))
);
}
}
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