NSManagedObjectContext extension that handles saving. Logs all errors if there are any.

NSManagedObjectContext+Addition

import Foundation
import CoreData

extension NSManagedObjectContext{
 
  func saveContext(){
    if self.hasChanges {
      do{
        try self.save()
      }
      catch let error as NSError{
        let errorInfo = error.userInfo as NSDictionary!
        if let detailedErrors = errorInfo[NSDetailedErrorsKey] as? [NSError]{
          if detailedErrors.count > 0{
            for i in 0..<detailedErrors.count{
              print("\(__FUNCTION__) Error[\(i)]: \(detailedErrors[i].localizedDescription)")
            }
          }
          else{
            print("\(__FUNCTION__) Error: \(detailedErrors[0].localizedDescription)")
          }
        }
        else{
          print("\(__FUNCTION__), Could not save: \(error.localizedDescription)")
        }
      }
    }
  }
  
}