Even if it's a data frame
dplyr::slice(mtcars, 1)
#> # A tibble: 1 x 11
#> mpg cyl disp hp drat wt qsec vs am gear carb
#> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 21.0 6.00 160 110 3.90 2.62 16.5 0 1.00 4.00 4.00
Created on 2018-01-09 by the reprex package
(0.1.1.9000).