Now that annotation classes override -isEqual:, it’s no longer appropriate to rely on -isEqual: or -containsObject: to check for the preexistence of an annotation. Those methods become deep equality tests, which have worse performance. Checking for identity allows the developer to add a polyline and polygon with identical coordinates, title, etc. to the map.
Implemented a missing -[MGLPolyline isEqual:].
Removed outdated comments about -annotationTagForAnnotation: being expensive.
b74d7bfdb4