Select (include) columns by character or numeric vector.
Examples
inc(iris, c(3, 4)) |> head()
#> Petal.Length Petal.Width
#> 1 1.4 0.2
#> 2 1.4 0.2
#> 3 1.3 0.2
#> 4 1.5 0.2
#> 5 1.4 0.2
#> 6 1.7 0.4
inc(iris, c("Sepal.Length", "Species")) |> head()
#> Sepal.Length Species
#> 1 5.1 setosa
#> 2 4.9 setosa
#> 3 4.7 setosa
#> 4 4.6 setosa
#> 5 5.0 setosa
#> 6 5.4 setosa