NSKeyedUnarchiver - try/catch needed?

Question

As I understand, the use of @try/@catch blocks is discouraged, because exceptions should only be thrown at unrecoverable, catastrophic errors (refer to

Answer 1

There was a new method added in iOS 9 to NSKeyedUnarchiver that now returns an error:

Swift:

public class func unarchiveTopLevelObjectWithData(data: NSData) throws -> AnyObject?

Objective-C:

+ (nullable id)unarchiveTopLevelObjectWithData:(NSData *)data error:(NSError **)error;

However, this is not backwards compatible with previous versions of iOS, so you will need to check for framework availability.