< snowe> first `flatMap` all the lists then `groupBy` them t kotlinlang #announcements

<@U3BE1HS4W> first `flatMap` all the lists, then `...

Andreas Sinz

11/22/2017, 6:54 PM

@snowe first

flatMap

all the lists, then

groupBy

them together into a list and then map the values?

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