Require Values Disjoint From Context

Validates that no element of the value occurs in the vector a formula evaluates to, for example that train and test ids do not overlap. The formula is evaluated using only explicitly passed context arguments, plus .value and .name.

Usage

require_disjoint(restriction, formula)

Arguments

restriction

a restriction object.

formula

a one-sided formula (e.g. ~ test_ids).

Value

The modified restriction object.

Details

NA elements are ignored. A factor is compared by its labels.

See also

Other value checks: require_between(), require_contains(), require_levels(), require_negative(), require_one_of(), require_positive(), require_set_equal(), require_unique()

Examples

train_ids <- restrict("train_ids") |> require_disjoint(~ test_ids)
train_ids(1:3, test_ids = 4:6)
try(train_ids(1:3, test_ids = 3:6))
#> Error : train_ids: must not share values with test_ids
#>   Found: "3"
#>   At: 3