RedLab

Tell us about the last project: technology stack, tasks, team.

How can you ensure safe access and modification of a HashMap in a multithreaded environment?

Tell us about ArrayList: features, initial size, insert and delete operations.

How do Stream API differ from loops? Which is faster and why?

How is the message race condition addressed in Kafka?

Can you explain what ContentProvider is and how it is used in Android applications?

What is the difference between using subscribeOn and observeOn in RxJava, and how do they affect the execution thread?

Explain what closed classes are in Kotlin and how they are used.

Could you explain what is meant by the term Intent in the context of Android app development?

What is a CROSS JOIN and what is its result?

What is Teleport in Vue 3 and how is it used?

Is it possible to count how many event handlers are registered and how many have been removed? How to check this?

Addition function with support for currying

Determining the order of output to the console (example 88)

Sorting an array of objects by date field

Creating a counter using closure