validatetools (version 0.6.1)

remove_redundancy: Remove redundant rules

Description

Simplify a rule set by removing redundant rules, i.e. rules that are implied by other rules.

Usage

remove_redundancy(x, ..., verbose = interactive())

Value

simplified validate::validator() object, in which redundant rules are removed.

Arguments

x

validate::validator() object with validation rules.

...

not used

verbose

if TRUE print the remove rules to the console.

See Also

Other redundancy: detect_fixed_variables(), detect_redundancy(), is_implied_by(), simplify_fixed_variables(), simplify_rules()

Examples

rules <- validator( rule1 = x > 1
                  , rule2 = x > 2
                  )

# rule1 is superfluous
remove_redundancy(rules, verbose=TRUE)

# rule 1 is implied by rule 2
is_implied_by(rules, "rule1", verbose=TRUE)

rules <- validator( rule1 = x > 2
                  , rule2 = x > 2
)

# standout: rule1 and rule2, oldest rules wins
remove_redundancy(rules, verbose=TRUE)

# Note that detection signifies both rules!
detect_redundancy(rules)