Question

int someFunction (CLLocation *currentLocation) {
  double latitude = 12.3f;
  double longitude = 22.5f;
  CLLocationDistance d1 = [currentLocation distanceFromLocation:
   [[CLLocation alloc] initWithLatitude:latitude longitude:longitude]];
  return 0;
}

Answer 1

Yes. Objective-C’s memory management can seem complicated, but remembering one fundamental rule will take you far:

You take ownership of an object if you create it using a method whose name begins with “alloc” or “new” or contains “copy” (for example, alloc, newObject, or mutableCopy), or if you send it a retain message. You are responsible for relinquishing ownership of objects you own using release or autorelease. Any other time you receive an object, you must not release it.

You call alloc without a release or autorelease, so you are breaking the rule.