Closure
blocks
access specifires
pillers of oop
design pattern ray wenderlitch
optional binding
optional chaining
static
singelton
Shallow and deep copy
Overloading
Overriding
Operator Overloading
MVVM
RXSwift
git rebase VS merge?
push notification?
UNNotificationServiceExtension
frame vs bounds.
what is functions,object,class,ARC,lazy,weak,
@synthesize vs @dynamic
TDD And CI
memorey leak in closure
Favourite apple framework to work with
view lifecycle
Testing.
3rd party library

Design Patterns/Architecture

Great lists of iOS interview questions for landing your next job:

50 iOS Interview Questions & Answers (Part 1 to 5): https://goo.gl/96CJcu

https://github.com/MaximAbramchuck/awesome-interview-questions#ios

http://www.sm-cloud.com/interview-questions-what-are-properties-and-instance-variables-in-objective-c-and-swift/

http://iosinterviewguide.com/?ref=fundamentals-posts

15 iOS Interview Questions For Senior Developers: https://goo.gl/2qyaZ8

GitHub List of iOS Developer & Designer Interview Questions: https://lnkd.in/gYQW_zs

Good luck with the job search!

http://www.tothenew.com/blog/12-key-differences-between-objective-c-and-swift/ https://redwerk.com/blog/10-differences-objective-c-swift

https://github.com/onmyway133/fantastic-ios-architecture https://medium.com/ios-os-x-development/ios-architecture-patterns-ecba4c38de52 https://code.tutsplus.com/articles/design-patterns-singletons--cms-23886 https://medium.com/@ankoma22/the-good-the-bad-and-the-ugly-of-viper-architecture-for-ios-apps-7272001b5347

http://carlosicaza.com/swiftbooks/SwiftLanguage.pdf https://www.raywenderlich.com/110982/swift-interview-questions-answers https://www.raywenderlich.com/53962/ios-interview-questions

http://www.infoworld.com/article/2920333/mobile-development/swift-vs-objective-c-10-reasons-the-future-favors-swift.html https://medium.com/@gregheo/reduce-a83c85f07960

http://nshipster.com/method-swizzling/

http://www.ongraph.com/blog/whats-the-real-difference-between-swift-2-and-swift-3/ https://www.hackingwithswift.com/swift3 https://www.raywenderlich.com/135655/whats-new-swift-3

https://swiftindia.slack.com/files/rameswar.prasad/F5Y2EENM9/ios_interview_questions.pdf https://www.youtube.com/playlist?list=PL8seg1JPkqgF5wazzCKSq3EEfqt3t8mvA