Conditional select function

Perform select if condition is met. This function is a simple wrapper for select

conditional_select(df1, cond, user_expr)

Arguments

df1	A dataframe
cond	A logical value indicating if select should be performed
user_expr	Select expression

See also

Other conditional dplyr: conditional_filter, conditional_mutate, conditional_range_filter

Examples

mtcars %>%
  dplyr::as_tibble() %>%
  conditional_select(
    exists("cyl", where = .),
    user_expr = -cyl
  )
#> # A tibble: 32 x 10
#>      mpg  disp    hp  drat    wt  qsec    vs    am  gear  carb
#>    <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#>  1  21    160    110  3.9   2.62  16.5     0     1     4     4
#>  2  21    160    110  3.9   2.88  17.0     0     1     4     4
#>  3  22.8  108     93  3.85  2.32  18.6     1     1     4     1
#>  4  21.4  258    110  3.08  3.22  19.4     1     0     3     1
#>  5  18.7  360    175  3.15  3.44  17.0     0     0     3     2
#>  6  18.1  225    105  2.76  3.46  20.2     1     0     3     1
#>  7  14.3  360    245  3.21  3.57  15.8     0     0     3     4
#>  8  24.4  147.    62  3.69  3.19  20       1     0     4     2
#>  9  22.8  141.    95  3.92  3.15  22.9     1     0     4     2
#> 10  19.2  168.   123  3.92  3.44  18.3     1     0     4     4
#> # … with 22 more rows