Using rename() results in error 'could not find function "setnames"'

[larspijnappel]

Unfortunately, dtplyr throws the following error when rename() is used:

Error in setnames(copy(_DT1), "mpg", "miles_per_gallon") : could not find function "setnames"

library(dtplyr)
library(dplyr, warn.conflicts = FALSE)

mtcars %>% 
    lazy_dt() %>%
    rename(miles_per_gallon = mpg)

[batpigandme]

Adding a reprex:

library(dtplyr)
library(dplyr, warn.conflicts = FALSE)

mtcars %>% 
  lazy_dt() %>%
  rename(miles_per_gallon = mpg)
#> Source: local data table [?? x 11]
#> Call:   setnames(copy(`_DT1`), "mpg", "miles_per_gallon")
#> Error in setnames(copy(`_DT1`), "mpg", "miles_per_gallon"): could not find function "setnames"

Yeah, it's doing more than just showing the call (works with data.table attached)

library(data.table)
library(dtplyr)
library(dplyr, warn.conflicts = FALSE)

mtcars %>% 
  lazy_dt() %>%
  rename(miles_per_gallon = mpg)
#> Source: local data table [?? x 11]
#> Call:   setnames(copy(`_DT1`), "mpg", "miles_per_gallon")
#> 
#>   miles_per_gallon   cyl  disp    hp  drat    wt  qsec    vs    am  gear
#>              <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1             21       6   160   110  3.9   2.62  16.5     0     1     4
#> 2             21       6   160   110  3.9   2.88  17.0     0     1     4
#> 3             22.8     4   108    93  3.85  2.32  18.6     1     1     4
#> 4             21.4     6   258   110  3.08  3.22  19.4     1     0     3
#> 5             18.7     8   360   175  3.15  3.44  17.0     0     0     3
#> 6             18.1     6   225   105  2.76  3.46  20.2     1     0     3
#> # … with 1 more variable: carb <dbl>
#> 
#> # Use as.data.table()/as.data.frame()/as_tibble() to access results

^{Created on 2019-11-12 by the reprex package (v0.3.0)}

[hadley]

This should work without loading data.table, so I've reopened to remind me to take a look at it.

[MichaelChirico]

oh my. I think it's a simple typo:

dtplyr/R/tidyeval.R

Line 13 in 6caf380

env$setname <- data.table::setnames

Needs to be setnames not setname