Activates each constraint in the specified array.
- iOS 8.0+
- macOS 10.10+
- tvOS 9.0+
An array of constraints to activate.
This convenience method provides an easy way to activate a set of constraints with one call. The effect of this method is the same as setting the
is property of each constraint to
true. Typically, using this method is more efficient than activating each constraint individually.