Default value for .drop argument of group_by
group_by_drop_default(.tbl)
TRUE
unless .tbl
is a grouped data frame that was previously
obtained by group_by(.drop = FALSE)
A data frame
group_by_drop_default(iris)
iris %>%
group_by(Species) %>%
group_by_drop_default()
iris %>%
group_by(Species, .drop = FALSE) %>%
group_by_drop_default()
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