iOS

Can you explain what the makeKeyAndVisible method does in the context of interface display?

Junior — Middle

Иннотех

МТС

Have you had experience developing interfaces for interacting with the backend of applications?

Why is it sometimes advisable to run more threads than the number of processor cores?

In what cases can a value type variable behave like a reference to an object?

Junior — Middle

Simbirsoft

Is it possible to store elements of different data types in the same array at the same time?

How does a local queue differ from a shared global queue in a task management system?

How is the dispatching of methods added through Extension in protocols implemented?

Can you explain what DispatchGroup is and how it is used in programming?

Junior — Middle

Wildberries

Can you explain the Singleton concept and its application in programming?

Junior — Middle

Иннотех

Doubletapp

How did you start your career in the IT field?

Could you explain what a semaphore is and how it is used for process synchronization?

What are the ways to implement optional elements in code?

What are the advantages and disadvantages of using OperationQueue for managing asynchronous tasks?

Junior — Middle

Okko

What mechanisms ensure the uniqueness of elements in a collection of type set?

Junior — Middle

DNS

Can you explain what a semaphore is in the context of programming and thread synchronization?

Junior — Middle

Itexus

Разумные решения

Avito

+4

How is the time complexity of inserting an element into a hash table evaluated?

Can you list the main types of memory leaks that can occur when programming in Swift?

How is thread synchronization mechanism implemented using a barrier?

Where is monitoring and tracking of completed tasks carried out?

Where is the reference counter usually implemented for memory management?

Junior — Middle

СБЕР

Альфа-Банк

Waveaccess