class RuboCop::Cop::Style::CollectionMethods
def preferred_methods
def preferred_methods @preferred_methods ||= begin # Make sure default configuration 'foo' => 'bar' is removed from # the total configuration if there is a 'bar' => 'foo' override. default = default_cop_config['PreferredMethods'] merged = cop_config['PreferredMethods'] overrides = merged.values - default.values merged.reject { |key, _| overrides.include?(key) }.symbolize_keys end end