How do I flatten an enumerable IObservable to IObservable?

The title of this post should be 'How do I flatten IObservable<IEnumerable<T>> to IObservable<T>?'

But blogger says 'no'...

This seems like a simple & legitimate Rx question and if you're one of the initiated it's very ~~easy~~ simple.

It came up the other day because a back-end service we're talking to returned an array of stuff and we wanted to flatten it into a stream of single values we could observe.

So what do I replace CONVERT_SOMEHOW with?

voilà...

   1:  IObservable<int[]> numbers = Observable.Return(new[] {1, 2, 3, 4, 5});

2:

   3:  IObservable<int> number = numbers.SelectMany(n => n);

In a simple app:

produces the following output:

Comments

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