iOS

  Problem: I'm having preview option for some data but if i save other data came from server the temp data also saved in my coredata. How to avoid that? Solution:      let  context  =   NSManagedObjectContext ( concurr encyType : . privateQueueConcurrencyType )     context. persistentStoreCoordin ator  =  getContext (). persistentStoreCo ordinator The above code solves my problem. Below are coredata initilisations in my appdelegate. //     MARK: -     Get the context func   getContext   () ->   NSManagedObjectContext   {       var   context:   NSManagedObjectContext ?       if   #available (iOS 10.0, *) {           context =   persistentContainer . vie wContext       }   else   {           context =   managedObjectContext       } ...

 Problem: In predicate NSPredicate to check the order set count > 0 iOS swift Solution: let predicate = NSPredicate(format: "object .@count > 0") You can easily check the order set count as like above.

 Problem: Stop the quicktime player screen recording in MAC. Solution: Use the keys ctrl+command+Esc or Click stop button on screen right corner of the window.Click that to stop the recording.