nicklockwood

Suppose we want to add support for a new iOS 8 API in our framework that replaces an older iOS 7 API. There are a few problems we might face:

1. The new API will crash if we call it on iOS 7
2. The new API won't compile if we build it using the iOS 7 SDK
3. The old API will raise a deprecation warning if built with a deployment target of iOS 8 and up

These three problems require three different technical solutions:

1. We can avoid calling the new API on an old OS version by using runtime detection (e.g. respondsToSelector:)
2. We can avoid compiling new APIs on old SDKs using the __IPHONE_OS_VERSION_MAX_ALLOWED macro

jmcd

#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "AnnotationCoordinateUtility.h"


@implementation AnnotationCoordinateUtility {
    }

    + (void)mutateCoordinatesOfClashingAnnotations:(NSArray *)annotations {