The importance of the rule relative to others in a rule system’s agenda.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
Typically, you set the salience of a rule before calling the
add(_:) method, so that the system can insert the new rule into its agenda at the proper position. Changing the salience of a rule already in a rule system does not affect its order in the current agenda, but it does affect the order of the new agenda the rule system builds when you call its