新闻 RxJava 2.0.0 RC5 发布，Rx 的 Java 实现 下载

RxJava 2.0.0 RC5 发布了，该版本包含API修复和增强，进一步清理代码和javadoc更好的测试覆盖率和错误修正。RxJava 是一个在 Java VM 上使用可观测的序列来组成异步的、基于事件的程序的库。

更新内容：

API 增强

1. 
   Pull 4685: Test static from methods and add Maybe.fromSingle & fromCompletable
   
   
2. 
   Pull 4687: Add Observable.rangeLong & Flowable.rangeLong.
   
   
3. 
   Pull 4690: BaseTestConsumer add assertValueAt(index, Predicate<T>).
   
   
4. 
   Pull 4711: Decouple stream operators from Function interface (FlowableOperator and co).
   
   
5. 
   Pull 4712: make Observable.sequenceEqual return Single
   
   
6. 
   Pull 4714: have Flowable.toList(Callable) return Single
   
   
7. 
   Pull 4720: remove variance from the input source of retryWhen
   
   
8. 
   Pull 4723: remove flatMapIterable(Function, int) overload and haveflatMapIterable(Function) use the flatten operator.
   
   
9. 
   Pull 4729: Merge FlowableEmitter.BackpressureMode into BackpressureStrategy
   
   
10. 
    Pull 4710: Remove checked exceptions from transformer interfaces.
    

性能增强

1. 
   Pull 4723: enable fusion on Observable.observeOn
   

Bug修复

1. 
   Pull 4681: Fix Flowable + Single elementAt and elementAtOrError operators on empty sources.
   
   
2. 
   Pull 4686: Fix flatMapX over-cancellation in case of an inner error.
   
   
3. 
   Pull 4689: Fix doOnEvent NPE on dispose()
   
   
4. 
   Pull 4695: CompositeException fix order of exceptions
   
   
5. 
   Pull 4696: Fix inner Throwable order for CompletablePeek
   
   
6. 
   Pull 4705: fix Observable.flatMap's dispose behavior and error accumulation
   
   
7. 
   Pull 4707: Fix Flowable.elementAt on empty sources.
   
   
8. 
   Pull 4708: fix Observable.publish(Function) latecommer behavior
   
   
9. 
   Pull 4712: fix Observable.combineLatest error management, fix Observable.flatMapmaxConcurrency behavior with scalars, use of unbounded queue, fixObservable.timeInterval not saving the Disposable
   
   
10. 
    Pull 4723: fix fusion of Observable.just, fix Observable.replay() potential emission beforeonSubscribe call
    
    
11. 
    Pull 4731: Delegate null Collections down to onError in toList
    
    
12. 
    Pull 4736: fix onBackpressureBuffer(long, Action, BufferOverflowStrategy) return type, fixconcatMapDelayError wrong barrier mode selected.
    
    
13. 
    Pull 4738: Fix Flowable.flatMap error, cancellation and resource management.
    

清除

1. 
   Pull 4689: Remove Maybe.toCompletable, use Maybe.ignoreElement.
   
   
2. 
   Pull 4708: remove bufferSize overloads of Observable.publish as there is no need to buffer anything for an Observable
   
   
3. 
   Pull 4723: remove flatMapIterable(Function, int) overload
   

其他更新

1. 
   Pull 4682: Update Mockito to 2.1.0
   
   
2. 
   Pull 4699: Clean up null usages by using ObjectHelper.requireNonNull.
   

下载地址：

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RxJava 2.0.0 RC5 发布，Rx 的 Java 实现下载地址