slice-diffs.md
In versus: Compare Data Frames

slice_diffs() works

Code
  slice_diffs(comp, "a", disp)
Output
  # A tibble: 2 x 9
    car              mpg   cyl  disp    hp  drat    wt    vs    am
    <chr>          <dbl> <int> <dbl> <int> <dbl> <dbl> <int> <int>
  1 Datsun 710      22.8    NA   109    93  3.85  2.32     1     1
  2 Hornet 4 Drive  21.4     6   259   110  3.08  3.22     1     0

Code
  slice_diffs(comp, "a", c(mpg, disp))
Output
  # A tibble: 4 x 9
    car              mpg   cyl  disp    hp  drat    wt    vs    am
    <chr>          <dbl> <int> <dbl> <int> <dbl> <dbl> <int> <int>
  1 Duster 360      14.3     8  360    245  3.21  3.57     0     0
  2 Merc 240D       24.4     4  147.    62  3.69  3.19     1     0
  3 Datsun 710      22.8    NA  109     93  3.85  2.32     1     1
  4 Hornet 4 Drive  21.4     6  259    110  3.08  3.22     1     0

Error when `comparison` isn't a comparison

Code
  slice_diffs(example_df_a, "a", disp)
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `comparison = example_df_a`
  i `comparison` must be the output of `versus::compare()`

Error when `table` isn't 'a' or 'b'

Code
  slice_diffs(comp, a, disp)
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `table = a`
  i `table` must be a single character value: "a" or "b"

Code
  slice_diffs(comp, disp)
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `table = disp`
  i `table` must be a single character value: "a" or "b"

Code
  slice_diffs(comp, "z")
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `table = "z"`
  i `table` must be either "a" or "b"

Code
  slice_diffs(comp)
Condition
  Error in `slice_diffs()`:
  ! `table` is absent but must be supplied.

Error on slice_diffs() with empty selection

Code
  slice_diffs(comp, "a", where(is.factor))
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `column = where(is.factor)`:
  * Must select at least one item.

Error on value_diffs when column doesn't exist

Code
  slice_diffs(comp, "a", bear)
Condition
  Error in `slice_diffs()`:
  ! Problem with argument `column = bear`:
  * Must select columns from `comparison$intersection`
  i column `bear` is not part of the supplied comparison