AMP 4: Target RxJS part I with Michael Hladky
Angular Master Podcast
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How to Reuse an Error Observable
If an observable error is it is basically gone, you cannot reuse it. You can trick the effect that an error observable is not reusable by using flattening operators. For example, whenever my value changes, I take this value, I take merge map and then I can run for example synchronous composition which could fail or go well. And no matter which of those cases appeared, the next value as it is merge map, it will recreate the new observable from scratch. Will basically drop the old one, create that new one. It's a nice trick to get an ongoing stream that is really not stopping when an error occurs.
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