Android

How to implement the Singleton pattern in Kotlin?

What was the reason for introducing the Unit class in Kotlin and what functions does it perform?

How can you declare an entire class in Kotlin as static so that it does not require creating an instance?

What professional achievement in Android development are you particularly proud of?

How can you request updated chat messages from the server?

What are the main difficulties that may arise when using code generation in Dagger?

Junior — Middle

Яндекс

In what cases is it advisable to use hash tables for data storage?

Junior — Middle

Газпром Медиа

How can using AsyncTask lead to memory leaks in an application?

How is key comparison performed when storing data in a HashMap?

What methods can be used to implement sending important notifications in Android without using persistent Foreground Service?

What is the main functionality and purpose of SupervisorScope in the system?

What is the main purpose of the Voyager system and in which scenarios is it applicable?

Есть ли у тебя вопросы о механизме корутин и их использовании?

How do you choose the correct indexes in PostgreSQL?

Using the data transfer mechanism when creating a fragment, can you set the data volume up to 15 megabytes?

Junior — Middle

Т-Банк

Can you name the main types of operators and data types used in the RxJava library?

How to implement asynchronous operations using coroutines in ViewModel architecture?

Middle — Middle+

X5 Digital

Have you used locking mechanisms with the synchronized keyword in your projects?

Junior — Middle

Иннотех

Have you had experience using the Atomic construct for managing concurrent data access?

What is the purpose of the overridable equals() method in the base class Object in Java?

Junior — Middle

ПромсвязьбанкПСБ