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Require Row Count Matching an Expression

Source: R/require.R
require_nrow_matches.Rd

Validates that nrow(value) equals the result of evaluating a formula. The formula is evaluated using only explicitly passed context arguments, plus .value (the validated value) and .name (the restriction name).

Usage

require_nrow_matches(restriction, formula)

Arguments

restriction

a restriction object.

formula

a one-sided formula (e.g. ~ nrow(reference)).

Value

The modified restriction object.

See also

Other structure checks: require_has_cols(), require_length(), require_length_matches(), require_length_max(), require_length_min(), require_named(), require_nrow_min(), require_scalar()