IIRC, Java has Flatten.iterables() and Flatten.collections(), the first of which does what you want.
Giving FlatMap a default arg of lambda x: x is an interesting idea. The only downside I see is a less clear error if one forgets to provide this (now mandatory) parameter, but maybe that's low enough to be worth the convenience? On Thu, Mar 21, 2024 at 12:02 PM Joey Tran <[email protected]> wrote: > That's not really the same thing, is it? `beam.Flatten` combines two or > more pcollections into a single pcollection while beam.FlatMap unpacks > iterables of elements (i.e. PCollection<Iterable<T>> -> PCollection<T>) > > On Thu, Mar 21, 2024 at 2:57 PM Valentyn Tymofieiev via dev < > [email protected]> wrote: > >> Hi, you can use beam.Flatten() instead. >> >> On Thu, Mar 21, 2024 at 10:55 AM Joey Tran <[email protected]> >> wrote: >> >>> Hey all, >>> >>> Using an identity function for FlatMap comes up more often than using >>> FlatMap without an identity function. Would it make sense to use the >>> identity function as a default? >>> >>> >>> >>>
