Android

What are two exclamation marks used for in programming?

What is the purpose of inheritance in object-oriented programming?

Junior — Middle

Ozon Fresh

What is the difference between a local context and an application context in the infrastructure, and why is it important?

Junior — Middle

Альфа-Банк

Where would you describe analytics before launching the application?

In what cases is the Hilt library used for dependency injection in Android?

How is memory managed on the Android platform?

How is navigation between Activities in Android implemented?

Can you explain the message processing loop mechanism in Android?

Junior — Middle

Яндекс

How is the Go scheduler (GMP model) structured?

We do not have a profiling tool for the application. What actions will you take to check the code?

Why can't parameters be passed to a fragment's constructor?

How to create a singleton instance of a class in Android?

Explain the working principle of a bound service in Android and how it differs from other types of services.

Junior — Middle

IBSSelectyWildberries

Which classes in Java provide socket functionality?

Why is multiple inheritance prohibited in some programming languages and how can this restriction be bypassed?

How does an array differ from a list?

What is the difference between signed and unsigned APK?

Can you name the types of delegates used in Kotlin?

For what purposes are different methods of data transfer between applications used?

What is the role of a channel in system architecture, and how does it interact with multiple subscribers or consumers?