Skip to main content

5Star Interview Question on iOS Concurrency: NSOperation and Dispatch Queues

 5Star Interview Question on iOS Concurrency: NSOperation and Dispatch Queues

Concurrency is always considered a monster of a subject in iOS development. It can be considered a dangerous area that many developers try their best to avoid. Rumor has it that multithreaded code should be avoided as much as you can. I agree with you that concurrency can be dangerous so if you don’t understand it very well. It is only dangerous because of the unknown. Think of how many dangerous actions or activities that people do in their life, many right? But once they master it, it becomes a piece of cake. Concurrency is a two sided-weapon that you should master and learn how to use it. It helps you to write efficient, fast execution, and responsive apps, but at the same time, misusing it will ruin your app with no mercy. That’s why before starting writing any concurrency code, think first why do you need concurrency and which API do you need to use to solve this problem? In iOS we have different APIs that can be used. In this tutorial we will talk about two of the most commonly used APIs – NSOperation and Dispatch Queues. 


You can get complete details of this post by clicking me or @AppCoda

   ---- --- - --- -- - - -  Have a Happy iOS Objective C + Swift Coding  -- - - - - -   - - - - - - -   

Comments

Popular posts from this blog

Disable back swipe gesture in UINavigationController

Disable back swipe gesture in UINavigationController(Back swipe in Navigation is a default feature from iOS 7 onwards)  Below Code will completely remove swipe gesture to all view controllers:(Keep in it your base view controller's ViewDidLoad method) if ([ self . navigationController respondsToSelector : @selector ( interactivePopGestureRecognizer )]) [ self . navigationController . view removeGestureRecognizer : self . navigationController . interactivePopGestureRecognizer ];    Below code will remove to particular viewcontroller: self . navigationController . interactivePopGestureRecognizer . enabled = false ;     ---- --- - --- - - - - - - -- - - -  Have a Happy iOS Objective C + Swift Coding  -- - - - - --- - - -  - - -  - - - - - - -   

UIKit Framework Hierarchy

UIKIT Framework Hierarchy

Middle Level iOS Developer interview questions

Middle Level iOS Developer interview questions 1) App Thinning 2) Steps for pushing application to app store 3) How push notification works 4) How google TEZ app getting near devices for get and send money 5)Retain Concept in iOS 6)Memory management  in iOS 7)ARC means 8) Syntax for shared instance 9) optionals and unwraping 10) Design pattarns 11) Tab bar insertion between screens 12) how to load images in table view using urls for each image by smooth scrolling  13) Extenstions 14)Clousers 15)Life cycles  16)how Table view reusable works?

Like us on Facebbok