RxJava-实用程序运算符

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📜 RxJava-实用程序运算符

📅 最后修改于: 2020-11-12 05:29:22 🧑 作者: Mango

以下是对Observables经常有用的运算符。

Sr.No.	Operator & Description
1	Delay Register action to handle Observable life-cycle events.
2	Materialize/Dematerialize Represents item emitted and notification sent.
3	ObserveOn Specify the scheduler to be observed.
4	Serialize Force Observable to make serialized calls.
5	Subscribe Operate upon the emissions of items and notifications like complete from an Observable
6	SubscribeOn Specify the scheduler to be used by an Observable when it is subscribed to.
7	TimeInterval Convert an Observable to emit indications of the amount of time elapsed between emissions.
8	Timeout Issues error notification if specified time occurs without emitting any item.
9	Timestamp Attach timestamp to each item emitted.
9	Using Creates a disposable resource or same lifespan as that of Observable.

公用事业运营商示例

使用您选择的任何编辑器(例如，C：\> RxJava)创建以下Java程序。

ObservableTester.java

import io.reactivex.Observable;
//Using subscribe operator to subscribe to an Observable
public class ObservableTester  {
   public static void main(String[] args) {    
      String[] letters = {"a", "b", "c", "d", "e", "f", "g"};
      final StringBuilder result = new StringBuilder();
      Observable observable = Observable.fromArray(letters);
      observable.subscribe( letter -> result.append(letter));
      System.out.println(result);
   }
}

验证结果

使用javac编译器编译类，如下所示：

C:\RxJava>javac ObservableTester.java

现在如下运行ObservableTester-

C:\RxJava>java ObservableTester

它应该产生以下输出-

abcdefg