Created
August 18, 2018 15:51
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/* | |
* We will create an Observable with range of 1 to 10 numbers. | |
* We use the groupBy operator to emit only even numbers from the list. | |
* The output will be 2,4,6,8,10 | |
*/ | |
Observable.range(1, 10) | |
.groupBy(new Function<Integer, Boolean>() { | |
@Override | |
public Boolean apply(Integer integer) { | |
return (integer % 2 == 0) ? true : false; | |
} | |
}) | |
.subscribe(new Observer<GroupedObservable<Boolean, Integer>>() { | |
@Override | |
public void onSubscribe(Disposable d) { | |
} | |
@Override | |
public void onNext(GroupedObservable<Boolean, Integer> booleanIntegerGroupedObservable) { | |
if(booleanIntegerGroupedObservable.getKey()) { | |
booleanIntegerGroupedObservable.subscribe(new Observer<Integer>() { | |
@Override | |
public void onSubscribe(Disposable d) { | |
} | |
@Override | |
public void onNext(Integer integer) { | |
System.out.println("onNext: " + integer); | |
} | |
@Override | |
public void onError(Throwable e) { | |
} | |
@Override | |
public void onComplete() { | |
} | |
}); | |
} | |
} | |
@Override | |
public void onError(Throwable e) { | |
} | |
@Override | |
public void onComplete() { | |
} | |
}); |
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