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Ungrouped summarise() uses summary variables correctly #2453

merged 3 commits into from Feb 20, 2017


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@krlmlr krlmlr commented Feb 20, 2017

@hadley: This is just a hack. Not all variables passed to input() are summary variables, but we're on the safe side if we assume they are. (In the worst case, standard instead of hybrid evaluation is used, this doesn't matter for ungrouped data.)

A clean fix would be to treat the ungrouped case as a special case for just one group (#2311). This would simplify the codebase a lot and also make the behavior more consistent. I have started the implementation, but I'll need more time.

Fixes #2404.

@krlmlr krlmlr requested a review from hadley Feb 20, 2017
hadley approved these changes Feb 20, 2017
@krlmlr krlmlr merged commit 9b950e8 into tidyverse:master Feb 20, 2017
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@krlmlr krlmlr deleted the b-#2404-overwrite-ungrouped-summary branch Feb 20, 2017
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