iOS

How to get an image from the gallery?

What anti-patterns exist in development?

What happens inside NSOperation when the cancel method is called and how is its logic implemented at a low level?

Junior — Middle

МТС

Can you explain the concept of Background Prefetch and how it is used to improve system performance?

Junior — Middle

Avito

What is a behavioral pattern?

Can you list and describe the different access levels in the Swift language?

Is it possible to fully place a value type in heap memory?

Junior — Middle

DNSEffective MobileVK

Can you explain the internal mechanism of NSLock in macOS or iOS?

What third-party tools do you use for organizing modules in code?

Junior — Middle

Т-Банк

What development methodologies have you worked with?

What classes are UIView inheriting from?

In which cases can an object of a class be placed on the stack memory?

Junior — Middle

OkkoДзен

What are the main principles of object-oriented programming you can identify?

What is the purpose of a stack in a program?

Who in the view hierarchy can handle the button press last?

How is the efficiency of searching for an element by key in a Set data structure evaluated?

What are the main methods of implementing asynchronous operations in programming?

Junior — Middle

МТС

In which controller lifecycle method can you override the controller's view?

What is wrapped?

What is the difference between copying an array and a struct in Swift?