core location - Calculate distance between two latitudes/longitudes in MapKit / CoreLocation -

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I was looking at the getDistanceFrom method in CoreLocation to set the distance between the two points I am getting the error when trying to use Corlao ocation ...

Im using 3.1.2 I have tried to do it, but gives an error : 

  CLLocation * userLoc = [[CLLocation alloc] initWithCoordinate: appDelegate.mapView2.userLocation.coordinate]; CLLocation * poiLoc = [[CLLocation alloc] initWithLatitude: [aPOI.latitude double value] Longitude: [APIOlgram double value]]; Double distance = [User's Mill Distensfromed Poolec] / 1000; NSLog (@ "% d", district);

Error returned: 

  "Objc_class_name_CLLocation", referenced from: verbatim-signature @__ objc @__ cls_refs @ CLLocation in POIDetailViewController.o ld: Symbol (s) not found Collection 2: LD back 1 Exit status

Am I missing something? <0.01

Thanks

Div class = "post-text" itemprop = "text">

Will need to add core selection framework.


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