could you please explain why the names(df) not working within dfplyr::arrange(), is there a way to make it work

nam <- names(mtcars)

mtcars2 <- mtcars %>% arrange(nam)

CodePudding user response：

With more than one column, we may use across

library(dplyr)
mtcars %>%
    arrange(across(all_of(nam)))

There is a difference in the behavior of variadic input (...) between select and functions like mutate/arrange/summarise

#select

... - tidy-select - One or more unquoted expressions separated by commas. Variable names can be used as if they were positions in the data frame, so expressions like x:y can be used to select a range of variables.

#arrange (similar with mutate/filter)

... - data-masking- Variables, or functions of variables. Use desc() to sort a variable in descending order.