public static RecordObserver <T> RecordWithGetValueAndSubscribe <T>(this IReadOnlyReactiveProperty <T> source)
{
var d = new SingleAssignmentDisposable();
var observer = new RecordObserver <T>(d);
d.Disposable = source.GetValueAndSubscribe(observer);
return(observer);
}
public static RecordObserver <T> Record <T>(this IObservable <T> source)
{
var d = new SingleAssignmentDisposable();
var observer = new RecordObserver <T>(d);
d.Disposable = source.Subscribe(observer);
return(observer);
}
public void GroupBy()
{
var subject = new Subject <int>();
RecordObserver <int> a = null;
RecordObserver <int> b = null;
RecordObserver <int> c = null;
subject.GroupBy(x => x % 3)
.Subscribe(x =>
{
if (x.Key == 0)
{
a = x.Record();
}
else if (x.Key == 1)
{
b = x.Record();
}
else if (x.Key == 2)
{
c = x.Record();
}
});
subject.OnNext(99);
subject.OnNext(100);
subject.OnNext(101);
subject.OnNext(0);
subject.OnNext(1);
subject.OnNext(2);
a.Values.Is(99, 0);
b.Values.Is(100, 1);
c.Values.Is(101, 2);
}